Attachment 130518 Details for Bug 100440 – dmesg

dmesg

dmesgCorruptionHDMI4k (text/plain), 250.92 KB, created by Luis Botello on 2017-03-29 01:17:28 UTC

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Creator: Luis Botello

Created: 2017-03-29 01:17:28 UTC

Size: 250.92 KB

patch

obsolete

>[  130.943943] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  130.943944] RBP: 0000000000c80c20 R08: 0000000000000000 R09: 0000000000c33de8
>[  130.943945] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000000017
>[  130.943946] R13: 00000000000003df R14: 0000000001000100 R15: 00000000ff000000
>[  130.943948] ---[ end trace e0ca556a67a9a151 ]---
>[  130.943987] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  130.944014] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  130.944046] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  130.944081] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  130.944134] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  130.944170] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  130.944194] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  130.944222] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  130.944246] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  130.944271] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  130.944294] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  130.944321] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  130.944345] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  130.944369] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  130.944418] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  130.944444] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  130.944578] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  130.944603] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  130.944775] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  130.944814] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  130.962426] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  130.962473] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  130.962503] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  130.962533] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 108000 not found, falling back to defaults
>[  130.962560] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  130.962583] [drm:hsw_audio_config_update [i915]] using automatic N
>[  130.962621] [drm:intel_fbc_enable [i915]] reserved 10485760 bytes of contiguous stolen space for FBC, threshold: 1
>[  130.962646] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  130.979533] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  130.979614] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  130.979725] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  135.980178] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  136.102514] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  136.102535] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  136.102599] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  136.102636] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  136.102663] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  136.102691] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  136.102719] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  136.102748] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  136.102773] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  136.102798] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  136.102814] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1440x900" 60 88750 1440 1488 1520 1600 900 903 909 926 0x40 0x9
>[  136.102839] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  136.102854] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1440x900" 60 88750 1440 1488 1520 1600 900 903 909 926 0x40 0x9
>[  136.102880] [drm:intel_dump_pipe_config [i915]] crtc timings: 88750 1440 1488 1520 1600 900 903 909 926, type: 0x40 flags: 0x9
>[  136.102905] [drm:intel_dump_pipe_config [i915]] port clock: 133125, pipe src size: 1440x900, pixel rate 88750
>[  136.102931] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  136.102958] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  136.102982] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  136.103015] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8200, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x4d
>[  136.103038] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  136.103066] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 1280x1024 format = XR24 little-endian (0x34325258)
>[  136.103091] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1280+1024 dst 0x0+1280+1024
>[  136.103116] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  136.103142] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  136.103168] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  136.103193] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  136.103223] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  136.103265] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  136.103290] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  136.103347] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  136.103377] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  136.122808] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  136.122851] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  136.231931] ------------[ cut here ]------------
>[  136.232029] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  136.232030] pipe_off wait timed out
>[  136.232031] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform(+) i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  136.232077]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  136.232106] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  136.232107] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  136.232108] Call Trace:
>[  136.232117]  dump_stack+0x63/0x90
>[  136.232121]  __warn+0xcb/0xf0
>[  136.232123]  warn_slowpath_fmt+0x5f/0x80
>[  136.232151]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  136.232176]  haswell_crtc_disable+0x81/0x170 [i915]
>[  136.232201]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  136.232206]  ? __schedule+0x3c1/0x8f0
>[  136.232231]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  136.232251]  drm_atomic_commit+0x4b/0x50 [drm]
>[  136.232261]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  136.232275]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  136.232287]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  136.232291]  ? remove_wait_queue+0x4d/0x60
>[  136.232304]  drm_ioctl+0x1ff/0x460 [drm]
>[  136.232306]  ? __wake_up+0x44/0x50
>[  136.232318]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  136.232322]  ? __vfs_write+0x37/0x160
>[  136.232325]  do_vfs_ioctl+0xa1/0x5d0
>[  136.232327]  ? vfs_write+0x15a/0x1b0
>[  136.232329]  SyS_ioctl+0x79/0x90
>[  136.232332]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  136.232334] RIP: 0033:0x7f68a20128b7
>[  136.232335] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  136.232337] RAX: ffffffffffffffda RBX: 000000000003f06f RCX: 00007f68a20128b7
>[  136.232338] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  136.232339] RBP: 000000000003f214 R08: 0000000000000000 R09: 0000000000c33de8
>[  136.232340] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000c9dde0
>[  136.232341] R13: 0000000000c9fbd0 R14: 0000000000c7f720 R15: 0000000000000001
>[  136.232343] ---[ end trace e0ca556a67a9a152 ]---
>[  136.232381] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  136.232408] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  136.232441] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  136.232478] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  136.232530] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  136.232566] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  136.232590] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  136.232618] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  136.232642] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  136.232667] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  136.232690] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  136.232717] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  136.232742] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  136.232766] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  136.232814] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  136.232838] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  136.232960] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  136.232988] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  136.233159] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  136.233198] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  136.252629] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  136.252666] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  136.252697] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  136.252729] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 88750 not found, falling back to defaults
>[  136.252755] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  136.252778] [drm:hsw_audio_config_update [i915]] using automatic N
>[  136.252816] [drm:intel_fbc_enable [i915]] reserved 10368000 bytes of contiguous stolen space for FBC, threshold: 1
>[  136.252840] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  136.269747] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  136.269787] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  136.269855] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  141.270354] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  141.391270] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  141.391290] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  141.391355] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  141.391392] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  141.391419] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  141.391449] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  141.391480] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  141.391508] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  141.391533] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  141.391558] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  141.391574] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x960" 60 108000 1280 1376 1488 1800 960 961 964 1000 0x40 0x5
>[  141.391599] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  141.391614] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x960" 60 108000 1280 1376 1488 1800 960 961 964 1000 0x40 0x5
>[  141.391641] [drm:intel_dump_pipe_config [i915]] crtc timings: 108000 1280 1376 1488 1800 960 961 964 1000, type: 0x40 flags: 0x5
>[  141.391666] [drm:intel_dump_pipe_config [i915]] port clock: 162000, pipe src size: 1280x960, pixel rate 108000
>[  141.391692] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  141.391719] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  141.391743] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  141.391776] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x4500, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x120000, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  141.391800] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  141.391828] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 1440x900 format = XR24 little-endian (0x34325258)
>[  141.391855] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1440+900 dst 0x0+1440+900
>[  141.391880] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  141.391904] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  141.391927] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  141.391953] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  141.391983] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  141.392025] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  141.392049] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  141.392208] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  141.392238] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  141.411714] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  141.411801] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  141.519723] ------------[ cut here ]------------
>[  141.519807] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  141.519808] pipe_off wait timed out
>[  141.519809] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform(+) i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  141.519854]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  141.519882] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  141.519883] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  141.519884] Call Trace:
>[  141.519894]  dump_stack+0x63/0x90
>[  141.519898]  __warn+0xcb/0xf0
>[  141.519900]  warn_slowpath_fmt+0x5f/0x80
>[  141.519928]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  141.519953]  haswell_crtc_disable+0x81/0x170 [i915]
>[  141.519978]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  141.519985]  ? __schedule+0x3c1/0x8f0
>[  141.520010]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  141.520032]  drm_atomic_commit+0x4b/0x50 [drm]
>[  141.520042]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  141.520056]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  141.520069]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  141.520074]  ? remove_wait_queue+0x4d/0x60
>[  141.520087]  drm_ioctl+0x1ff/0x460 [drm]
>[  141.520089]  ? __wake_up+0x44/0x50
>[  141.520101]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  141.520105]  ? __vfs_write+0x37/0x160
>[  141.520108]  do_vfs_ioctl+0xa1/0x5d0
>[  141.520110]  ? vfs_write+0x15a/0x1b0
>[  141.520112]  SyS_ioctl+0x79/0x90
>[  141.520116]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  141.520117] RIP: 0033:0x7f68a20128b7
>[  141.520119] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  141.520120] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  141.520121] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  141.520122] RBP: 0000000000c7d3a0 R08: 0000000000000000 R09: 0000000000c33de8
>[  141.520123] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000002c
>[  141.520124] R13: 0000000000000282 R14: 0000000001000100 R15: 0000000000000000
>[  141.520126] ---[ end trace e0ca556a67a9a153 ]---
>[  141.520164] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  141.520191] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  141.520224] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  141.520260] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  141.520312] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  141.520348] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  141.520372] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  141.520401] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  141.520424] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  141.520449] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  141.520472] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  141.520499] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  141.520524] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  141.520548] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  141.520596] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  141.520619] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  141.520756] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  141.520782] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  141.520953] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  141.520993] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  141.539804] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  141.539897] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  141.539976] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  141.540053] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 108000 not found, falling back to defaults
>[  141.540123] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  141.540189] [drm:hsw_audio_config_update [i915]] using automatic N
>[  141.540280] [drm:intel_fbc_enable [i915]] reserved 9830400 bytes of contiguous stolen space for FBC, threshold: 1
>[  141.540350] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  141.556943] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  141.557041] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  141.557169] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  146.557638] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  146.676757] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  146.676778] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  146.676842] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  146.676880] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  146.676907] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  146.676937] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  146.676969] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  146.676998] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  146.677023] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  146.677047] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  146.677063] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1152x864" 75 108000 1152 1216 1344 1600 864 865 868 900 0x40 0x5
>[  146.677088] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  146.677103] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1152x864" 75 108000 1152 1216 1344 1600 864 865 868 900 0x40 0x5
>[  146.677129] [drm:intel_dump_pipe_config [i915]] crtc timings: 108000 1152 1216 1344 1600 864 865 868 900, type: 0x40 flags: 0x5
>[  146.677154] [drm:intel_dump_pipe_config [i915]] port clock: 162000, pipe src size: 1152x864, pixel rate 108000
>[  146.677180] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  146.677207] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  146.677231] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  146.677259] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8200, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x4d
>[  146.677282] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  146.677312] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 1280x960 format = XR24 little-endian (0x34325258)
>[  146.677336] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1280+960 dst 0x0+1280+960
>[  146.677362] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  146.677388] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  146.677413] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  146.677444] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  146.677472] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  146.677513] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  146.677538] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  146.677678] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  146.677708] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  146.697195] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  146.697238] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  146.804109] ------------[ cut here ]------------
>[  146.804215] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  146.804218] pipe_off wait timed out
>[  146.804220] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform(+) i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  146.804328]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  146.804397] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  146.804400] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  146.804402] Call Trace:
>[  146.804419]  dump_stack+0x63/0x90
>[  146.804427]  __warn+0xcb/0xf0
>[  146.804433]  warn_slowpath_fmt+0x5f/0x80
>[  146.804512]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  146.804584]  haswell_crtc_disable+0x81/0x170 [i915]
>[  146.804657]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  146.804668]  ? __schedule+0x3c1/0x8f0
>[  146.804738]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  146.804784]  drm_atomic_commit+0x4b/0x50 [drm]
>[  146.804806]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  146.804846]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  146.804882]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  146.804890]  ? remove_wait_queue+0x4d/0x60
>[  146.804927]  drm_ioctl+0x1ff/0x460 [drm]
>[  146.804932]  ? __wake_up+0x44/0x50
>[  146.804966]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  146.804975]  ? __vfs_write+0x37/0x160
>[  146.804982]  do_vfs_ioctl+0xa1/0x5d0
>[  146.804987]  ? vfs_write+0x15a/0x1b0
>[  146.804993]  SyS_ioctl+0x79/0x90
>[  146.805001]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  146.805005] RIP: 0033:0x7f68a20128b7
>[  146.805009] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  146.805013] RAX: ffffffffffffffda RBX: 0000000000034512 RCX: 00007f68a20128b7
>[  146.805016] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  146.805019] RBP: 00000000000347f4 R08: 0000000000000000 R09: 0000000000c33de8
>[  146.805021] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000cae528
>[  146.805023] R13: 0000000000cae528 R14: 0000000000c7c900 R15: 0000000000000000
>[  146.805029] ---[ end trace e0ca556a67a9a154 ]---
>[  146.805119] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  146.805194] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  146.805276] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  146.805361] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  146.805461] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  146.805548] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  146.805617] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  146.805687] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  146.805753] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  146.805823] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  146.805888] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  146.805962] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  146.806032] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  146.806100] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  146.806203] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  146.806327] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  146.806521] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  146.806595] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  146.806897] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  146.806983] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  146.826399] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  146.826481] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  146.826552] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  146.826621] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 108000 not found, falling back to defaults
>[  146.826683] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  146.826742] [drm:hsw_audio_config_update [i915]] using automatic N
>[  146.826824] [drm:intel_fbc_enable [i915]] reserved 7962624 bytes of contiguous stolen space for FBC, threshold: 1
>[  146.826886] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  146.840165] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  146.840252] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  146.840371] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  151.840842] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  151.960456] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  151.960475] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  151.960539] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  151.960573] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  151.960601] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  151.960631] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  151.960661] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  151.960690] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  151.960715] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  151.960739] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  151.960755] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x720" 60 74250 1280 1390 1430 1650 720 725 730 750 0x40 0x5
>[  151.960780] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  151.960794] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x720" 60 74250 1280 1390 1430 1650 720 725 730 750 0x40 0x5
>[  151.960820] [drm:intel_dump_pipe_config [i915]] crtc timings: 74250 1280 1390 1430 1650 720 725 730 750, type: 0x40 flags: 0x5
>[  151.960845] [drm:intel_dump_pipe_config [i915]] port clock: 111375, pipe src size: 1280x720, pixel rate 74250
>[  151.960874] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  151.960901] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  151.960925] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  151.960957] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8200, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x4d
>[  151.960981] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  151.961010] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 1152x864 format = XR24 little-endian (0x34325258)
>[  151.961035] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1152+864 dst 0x0+1152+864
>[  151.961061] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  151.961086] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  151.961112] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  151.961137] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  151.961167] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  151.961208] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  151.961233] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  151.961390] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  151.961424] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  151.980982] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  151.981025] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  152.088139] ------------[ cut here ]------------
>[  152.088245] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  152.088247] pipe_off wait timed out
>[  152.088249] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform(+) i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  152.088358]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  152.088427] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  152.088430] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  152.088432] Call Trace:
>[  152.088448]  dump_stack+0x63/0x90
>[  152.088457]  __warn+0xcb/0xf0
>[  152.088463]  warn_slowpath_fmt+0x5f/0x80
>[  152.088542]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  152.088618]  haswell_crtc_disable+0x81/0x170 [i915]
>[  152.088691]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  152.088701]  ? __schedule+0x3c1/0x8f0
>[  152.088771]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  152.088818]  drm_atomic_commit+0x4b/0x50 [drm]
>[  152.088841]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  152.088880]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  152.088917]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  152.088927]  ? remove_wait_queue+0x4d/0x60
>[  152.088964]  drm_ioctl+0x1ff/0x460 [drm]
>[  152.088969]  ? __wake_up+0x44/0x50
>[  152.089003]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  152.089012]  ? __vfs_write+0x37/0x160
>[  152.089019]  do_vfs_ioctl+0xa1/0x5d0
>[  152.089024]  ? vfs_write+0x15a/0x1b0
>[  152.089030]  SyS_ioctl+0x79/0x90
>[  152.089038]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  152.089042] RIP: 0033:0x7f68a20128b7
>[  152.089046] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  152.089050] RAX: ffffffffffffffda RBX: 00007ffc1c5b22d0 RCX: 00007f68a20128b7
>[  152.089053] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  152.089056] RBP: 0000000000c7e168 R08: 0000000000000000 R09: 0000000000c33de8
>[  152.089058] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000002e
>[  152.089060] R13: 0000000000000220 R14: 0000000001000100 R15: 00000000fe000000
>[  152.089066] ---[ end trace e0ca556a67a9a155 ]---
>[  152.089156] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  152.089230] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  152.089312] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  152.089397] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  152.089499] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  152.089586] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  152.089655] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  152.089726] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  152.089793] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  152.089860] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  152.089925] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  152.089999] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  152.090068] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  152.090136] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  152.090326] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  152.090408] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  152.090599] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  152.090672] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  152.090958] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  152.091045] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  152.110398] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  152.110480] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  152.110550] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  152.110623] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 74250 (0x00070000)
>[  152.110683] [drm:hsw_audio_config_update [i915]] using automatic N
>[  152.110764] [drm:intel_fbc_enable [i915]] reserved 7372800 bytes of contiguous stolen space for FBC, threshold: 1
>[  152.110826] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  152.127516] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  152.127603] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  152.127720] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  153.328729] sdhci-pci 0000:00:1b.0: SDHCI controller found [8086:31ca] (rev 1)
>[  157.128184] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  157.247209] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  157.247230] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  157.247294] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  157.247326] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  157.247353] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  157.247384] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  157.247414] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  157.247443] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  157.247469] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  157.247493] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  157.247509] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x720" 60 74176 1280 1390 1430 1650 720 725 730 750 0x40 0x5
>[  157.247533] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  157.247548] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x720" 60 74176 1280 1390 1430 1650 720 725 730 750 0x40 0x5
>[  157.247574] [drm:intel_dump_pipe_config [i915]] crtc timings: 74176 1280 1390 1430 1650 720 725 730 750, type: 0x40 flags: 0x5
>[  157.247599] [drm:intel_dump_pipe_config [i915]] port clock: 111264, pipe src size: 1280x720, pixel rate 74176
>[  157.247625] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  157.247652] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  157.247676] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  157.247708] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8300, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x1a6666, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  157.247732] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  157.247758] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 1280x720 format = XR24 little-endian (0x34325258)
>[  157.247783] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1280+720 dst 0x0+1280+720
>[  157.247809] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  157.247834] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  157.247860] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  157.247886] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  157.247916] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  157.247957] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  157.247982] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  157.248117] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  157.248147] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  157.266717] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  157.266758] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  157.376112] ------------[ cut here ]------------
>[  157.376207] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  157.376208] pipe_off wait timed out
>[  157.376209] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  157.376254]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  157.376284] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  157.376285] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  157.376286] Call Trace:
>[  157.376295]  dump_stack+0x63/0x90
>[  157.376300]  __warn+0xcb/0xf0
>[  157.376302]  warn_slowpath_fmt+0x5f/0x80
>[  157.376329]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  157.376355]  haswell_crtc_disable+0x81/0x170 [i915]
>[  157.376380]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  157.376387]  ? __schedule+0x3c1/0x8f0
>[  157.376411]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  157.376434]  drm_atomic_commit+0x4b/0x50 [drm]
>[  157.376444]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  157.376457]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  157.376470]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  157.376474]  ? remove_wait_queue+0x4d/0x60
>[  157.376487]  drm_ioctl+0x1ff/0x460 [drm]
>[  157.376488]  ? __wake_up+0x44/0x50
>[  157.376500]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  157.376504]  ? __vfs_write+0x37/0x160
>[  157.376508]  do_vfs_ioctl+0xa1/0x5d0
>[  157.376509]  ? vfs_write+0x15a/0x1b0
>[  157.376512]  SyS_ioctl+0x79/0x90
>[  157.376515]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  157.376517] RIP: 0033:0x7f68a20128b7
>[  157.376518] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  157.376520] RAX: ffffffffffffffda RBX: 0000000000cb4aa8 RCX: 00007f68a20128b7
>[  157.376521] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  157.376522] RBP: 00000000000021cf R08: 0000000000000000 R09: 0000000000c33de8
>[  157.376522] R10: 0000000000c33df0 R11: 0000000000000246 R12: 00007ffc1c5b20f0
>[  157.376523] R13: 0000000000c7d0d8 R14: 0000000000c7c2b0 R15: 000000000000046a
>[  157.376525] ---[ end trace e0ca556a67a9a156 ]---
>[  157.376565] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  157.376592] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  157.376624] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  157.376661] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  157.376713] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  157.376749] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  157.376773] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  157.376801] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  157.376824] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  157.376849] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  157.376872] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  157.376899] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  157.376923] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  157.376947] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  157.376995] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  157.377022] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  157.377142] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  157.377167] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  157.377331] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  157.377370] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  157.396861] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  157.396944] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  157.397013] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  157.397082] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 74176 (0x00060000)
>[  157.397142] [drm:hsw_audio_config_update [i915]] using automatic N
>[  157.397222] [drm:intel_fbc_enable [i915]] reserved 7372800 bytes of contiguous stolen space for FBC, threshold: 1
>[  157.397283] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  157.414003] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  157.414100] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  157.414316] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  162.414787] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  162.532424] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  162.532444] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  162.532506] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  162.532542] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  162.532569] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  162.532599] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  162.532631] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  162.532660] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  162.532685] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  162.532709] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  162.532724] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x720" 50 74250 1280 1720 1760 1980 720 725 730 750 0x40 0x5
>[  162.532750] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  162.532764] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1280x720" 50 74250 1280 1720 1760 1980 720 725 730 750 0x40 0x5
>[  162.532791] [drm:intel_dump_pipe_config [i915]] crtc timings: 74250 1280 1720 1760 1980 720 725 730 750, type: 0x40 flags: 0x5
>[  162.532816] [drm:intel_dump_pipe_config [i915]] port clock: 111375, pipe src size: 1280x720, pixel rate 74250
>[  162.532842] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  162.532869] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  162.532893] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  162.532927] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8300, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x1844d0, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  162.532951] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  162.532979] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 1280x720 format = XR24 little-endian (0x34325258)
>[  162.533004] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1280+720 dst 0x0+1280+720
>[  162.533030] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  162.533056] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  162.533081] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  162.533107] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  162.533137] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  162.533179] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  162.533203] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  162.533362] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  162.533400] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  162.552936] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  162.553027] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  162.658249] ------------[ cut here ]------------
>[  162.658355] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  162.658357] pipe_off wait timed out
>[  162.658359] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  162.658467]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  162.658536] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  162.658539] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  162.658542] Call Trace:
>[  162.658558]  dump_stack+0x63/0x90
>[  162.658567]  __warn+0xcb/0xf0
>[  162.658573]  warn_slowpath_fmt+0x5f/0x80
>[  162.658653]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  162.658725]  haswell_crtc_disable+0x81/0x170 [i915]
>[  162.658799]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  162.658810]  ? __schedule+0x3c1/0x8f0
>[  162.658882]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  162.658931]  drm_atomic_commit+0x4b/0x50 [drm]
>[  162.658953]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  162.658994]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  162.659030]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  162.659038]  ? remove_wait_queue+0x4d/0x60
>[  162.659075]  drm_ioctl+0x1ff/0x460 [drm]
>[  162.659080]  ? __wake_up+0x44/0x50
>[  162.659114]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  162.659123]  ? __vfs_write+0x37/0x160
>[  162.659131]  do_vfs_ioctl+0xa1/0x5d0
>[  162.659136]  ? vfs_write+0x15a/0x1b0
>[  162.659142]  SyS_ioctl+0x79/0x90
>[  162.659150]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  162.659154] RIP: 0033:0x7f68a20128b7
>[  162.659157] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  162.659162] RAX: ffffffffffffffda RBX: 00007ffc1c5b22d0 RCX: 00007f68a20128b7
>[  162.659164] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  162.659167] RBP: 0000000000c7e200 R08: 0000000000000000 R09: 0000000000c33de8
>[  162.659169] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000005f
>[  162.659172] R13: 0000000000000221 R14: 0000000001000100 R15: 00000000fd000000
>[  162.659203] ---[ end trace e0ca556a67a9a157 ]---
>[  162.659307] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  162.659382] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  162.659465] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  162.659549] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  162.659649] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  162.659735] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  162.659803] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  162.659873] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  162.659939] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  162.660006] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  162.660071] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  162.660144] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  162.660214] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  162.660283] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  162.660387] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  162.660455] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  162.660623] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  162.660695] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  162.660980] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  162.661070] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  162.678761] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  162.678842] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  162.678912] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  162.678982] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 74250 (0x00070000)
>[  162.679042] [drm:hsw_audio_config_update [i915]] using automatic N
>[  162.679123] [drm:intel_fbc_enable [i915]] reserved 7372800 bytes of contiguous stolen space for FBC, threshold: 1
>[  162.679186] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  162.699231] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  162.699328] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  162.699457] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  167.699926] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  167.815947] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  167.815965] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  167.816029] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  167.816065] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  167.816093] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  167.816123] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  167.816155] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  167.816184] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  167.816209] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  167.816234] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  167.816251] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1024x768" 75 78750 1024 1040 1136 1312 768 769 772 800 0x40 0x5
>[  167.816276] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  167.816291] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1024x768" 75 78750 1024 1040 1136 1312 768 769 772 800 0x40 0x5
>[  167.816317] [drm:intel_dump_pipe_config [i915]] crtc timings: 78750 1024 1040 1136 1312 768 769 772 800, type: 0x40 flags: 0x5
>[  167.816342] [drm:intel_dump_pipe_config [i915]] port clock: 118125, pipe src size: 1024x768, pixel rate 78750
>[  167.816368] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  167.816395] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  167.816419] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  167.816452] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8300, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x1a6666, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  167.816476] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  167.816505] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 1280x720 format = XR24 little-endian (0x34325258)
>[  167.816530] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1280+720 dst 0x0+1280+720
>[  167.816556] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  167.816582] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  167.816608] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  167.816634] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  167.816666] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  167.816706] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  167.816731] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  167.816879] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  167.816914] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  167.835602] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  167.835645] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  167.943521] ------------[ cut here ]------------
>[  167.943617] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  167.943618] pipe_off wait timed out
>[  167.943619] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  167.943684]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  167.943712] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  167.943713] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  167.943714] Call Trace:
>[  167.943723]  dump_stack+0x63/0x90
>[  167.943727]  __warn+0xcb/0xf0
>[  167.943730]  warn_slowpath_fmt+0x5f/0x80
>[  167.943771]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  167.943796]  haswell_crtc_disable+0x81/0x170 [i915]
>[  167.943821]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  167.943828]  ? __schedule+0x3c1/0x8f0
>[  167.943853]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  167.943875]  drm_atomic_commit+0x4b/0x50 [drm]
>[  167.943885]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  167.943899]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  167.943912]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  167.943915]  ? remove_wait_queue+0x4d/0x60
>[  167.943928]  drm_ioctl+0x1ff/0x460 [drm]
>[  167.943929]  ? __wake_up+0x44/0x50
>[  167.943941]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  167.943945]  ? __vfs_write+0x37/0x160
>[  167.943949]  do_vfs_ioctl+0xa1/0x5d0
>[  167.943950]  ? vfs_write+0x15a/0x1b0
>[  167.943952]  SyS_ioctl+0x79/0x90
>[  167.943956]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  167.943958] RIP: 0033:0x7f68a20128b7
>[  167.943959] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  167.943960] RAX: ffffffffffffffda RBX: 000000000000000e RCX: 00007f68a20128b7
>[  167.943961] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  167.943962] RBP: 00007ffc1c5b3040 R08: 0000000000000000 R09: 0000000000c33de8
>[  167.943963] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000c348d8
>[  167.943964] R13: 00007ffc1c5b38d0 R14: 00007ffc1c5b3058 R15: 0000000000c348d8
>[  167.943966] ---[ end trace e0ca556a67a9a158 ]---
>[  167.944005] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  167.944032] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  167.944065] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  167.944100] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  167.944153] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  167.944188] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  167.944213] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  167.944241] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  167.944264] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  167.944290] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  167.944312] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  167.944340] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  167.944364] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  167.944388] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  167.944437] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  167.944460] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  167.944582] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  167.944607] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  167.944777] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  167.944817] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  167.963426] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  167.963509] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  167.963580] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  167.963649] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 78750 not found, falling back to defaults
>[  167.963712] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  167.963771] [drm:hsw_audio_config_update [i915]] using automatic N
>[  167.963851] [drm:intel_fbc_enable [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, threshold: 1
>[  167.963913] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  167.977207] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  167.977293] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  167.977413] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  172.977869] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  173.095613] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  173.095633] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  173.095696] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  173.095733] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  173.095761] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  173.095791] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  173.095821] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  173.095850] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  173.095875] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  173.095900] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  173.095915] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1024x768" 70 75000 1024 1048 1184 1328 768 771 777 806 0x40 0xa
>[  173.095941] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  173.095956] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1024x768" 70 75000 1024 1048 1184 1328 768 771 777 806 0x40 0xa
>[  173.095982] [drm:intel_dump_pipe_config [i915]] crtc timings: 75000 1024 1048 1184 1328 768 771 777 806, type: 0x40 flags: 0xa
>[  173.096007] [drm:intel_dump_pipe_config [i915]] port clock: 112500, pipe src size: 1024x768, pixel rate 75000
>[  173.096033] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  173.096060] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  173.096087] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  173.096117] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x4500, ebb4: 0x2000,pll0: 0x1d, pll1: 0x100, pll2: 0x220000, pll3: 0x10000, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  173.096141] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  173.096171] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 1024x768 format = XR24 little-endian (0x34325258)
>[  173.096195] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1024+768 dst 0x0+1024+768
>[  173.096221] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  173.096246] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  173.096272] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  173.096297] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  173.096327] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  173.096369] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  173.096393] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  173.096542] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  173.096574] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  173.115863] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  173.115906] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  173.222822] ------------[ cut here ]------------
>[  173.222926] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  173.222928] pipe_off wait timed out
>[  173.222931] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  173.223040]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  173.223110] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  173.223113] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  173.223115] Call Trace:
>[  173.223131]  dump_stack+0x63/0x90
>[  173.223140]  __warn+0xcb/0xf0
>[  173.223146]  warn_slowpath_fmt+0x5f/0x80
>[  173.223225]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  173.223296]  haswell_crtc_disable+0x81/0x170 [i915]
>[  173.223369]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  173.223379]  ? __schedule+0x3c1/0x8f0
>[  173.223450]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  173.223500]  drm_atomic_commit+0x4b/0x50 [drm]
>[  173.223522]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  173.223562]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  173.223599]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  173.223609]  ? remove_wait_queue+0x4d/0x60
>[  173.223646]  drm_ioctl+0x1ff/0x460 [drm]
>[  173.223651]  ? __wake_up+0x44/0x50
>[  173.223685]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  173.223694]  ? __vfs_write+0x37/0x160
>[  173.223701]  do_vfs_ioctl+0xa1/0x5d0
>[  173.223706]  ? vfs_write+0x15a/0x1b0
>[  173.223712]  SyS_ioctl+0x79/0x90
>[  173.223720]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  173.223725] RIP: 0033:0x7f68a20128b7
>[  173.223728] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  173.223733] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  173.223735] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  173.223738] RBP: 0000000000c7d998 R08: 0000000000000000 R09: 0000000000c33de8
>[  173.223740] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000004e
>[  173.223743] R13: 00000000000001e6 R14: 0000000001000100 R15: 0000000000000000
>[  173.223748] ---[ end trace e0ca556a67a9a159 ]---
>[  173.223838] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  173.223912] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  173.223994] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  173.224079] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  173.224179] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  173.224265] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  173.224334] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  173.224404] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  173.224470] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  173.224537] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  173.224603] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  173.224676] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  173.224745] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  173.224813] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  173.224927] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  173.224998] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  173.225248] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  173.225324] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  173.225617] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  173.225699] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  173.245047] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  173.245130] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  173.245199] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  173.245270] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 75000 not found, falling back to defaults
>[  173.245332] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  173.245391] [drm:hsw_audio_config_update [i915]] using automatic N
>[  173.245473] [drm:intel_fbc_enable [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, threshold: 1
>[  173.245535] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  173.259790] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  173.259888] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  173.260018] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  178.260485] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  178.379038] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  178.379057] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  178.379119] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  178.379156] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  178.379184] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  178.379213] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  178.379244] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  178.379273] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  178.379298] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  178.379322] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  178.379338] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
>[  178.379363] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  178.379378] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
>[  178.379404] [drm:intel_dump_pipe_config [i915]] crtc timings: 65000 1024 1048 1184 1344 768 771 777 806, type: 0x40 flags: 0xa
>[  178.379429] [drm:intel_dump_pipe_config [i915]] port clock: 97500, pipe src size: 1024x768, pixel rate 65000
>[  178.379455] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  178.379482] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  178.379506] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  178.379538] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x4500, ebb4: 0x2000,pll0: 0x1c, pll1: 0x100, pll2: 0x80000, pll3: 0x10000, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  178.379562] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  178.379589] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 1024x768 format = XR24 little-endian (0x34325258)
>[  178.379614] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1024+768 dst 0x0+1024+768
>[  178.379640] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  178.379666] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  178.379691] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  178.379717] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  178.379747] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  178.379788] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  178.379813] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  178.379871] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  178.379901] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  178.397371] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  178.397462] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  178.502649] ------------[ cut here ]------------
>[  178.502755] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  178.502757] pipe_off wait timed out
>[  178.502759] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  178.502868]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  178.502938] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  178.502941] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  178.502943] Call Trace:
>[  178.502959]  dump_stack+0x63/0x90
>[  178.502967]  __warn+0xcb/0xf0
>[  178.502973]  warn_slowpath_fmt+0x5f/0x80
>[  178.503052]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  178.503124]  haswell_crtc_disable+0x81/0x170 [i915]
>[  178.503198]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  178.503209]  ? __schedule+0x3c1/0x8f0
>[  178.503280]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  178.503329]  drm_atomic_commit+0x4b/0x50 [drm]
>[  178.503351]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  178.503392]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  178.503427]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  178.503437]  ? remove_wait_queue+0x4d/0x60
>[  178.503474]  drm_ioctl+0x1ff/0x460 [drm]
>[  178.503478]  ? __wake_up+0x44/0x50
>[  178.503512]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  178.503523]  ? __vfs_write+0x37/0x160
>[  178.503531]  do_vfs_ioctl+0xa1/0x5d0
>[  178.503536]  ? vfs_write+0x15a/0x1b0
>[  178.503541]  SyS_ioctl+0x79/0x90
>[  178.503549]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  178.503554] RIP: 0033:0x7f68a20128b7
>[  178.503557] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  178.503562] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  178.503564] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  178.503566] RBP: 0000000000c7db30 R08: 0000000000000000 R09: 0000000000c33de8
>[  178.503569] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000000041
>[  178.503571] R13: 00000000000001f0 R14: 0000000001000100 R15: 0000000000000000
>[  178.503577] ---[ end trace e0ca556a67a9a15a ]---
>[  178.503665] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  178.503738] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  178.503821] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  178.503905] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  178.504006] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  178.504093] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  178.504162] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  178.504232] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  178.504300] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  178.504367] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  178.504433] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  178.504506] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  178.504575] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  178.504643] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  178.504748] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  178.504815] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  178.505004] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  178.505075] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  178.505373] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  178.505464] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  178.524736] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  178.524828] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  178.524906] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  178.524985] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 65000 not found, falling back to defaults
>[  178.525058] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  178.525127] [drm:hsw_audio_config_update [i915]] using automatic N
>[  178.525215] [drm:intel_fbc_enable [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, threshold: 1
>[  178.525285] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  178.541867] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  178.541964] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  178.542094] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  183.542647] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  183.642288] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  183.642306] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  183.642369] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  183.642406] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  183.642433] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  183.642462] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  183.642492] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  183.642521] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  183.642546] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  183.642570] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  183.642585] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"832x624" 75 57284 832 864 928 1152 624 625 628 667 0x40 0xa
>[  183.642610] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  183.642625] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"832x624" 75 57284 832 864 928 1152 624 625 628 667 0x40 0xa
>[  183.642650] [drm:intel_dump_pipe_config [i915]] crtc timings: 57284 832 864 928 1152 624 625 628 667, type: 0x40 flags: 0xa
>[  183.642675] [drm:intel_dump_pipe_config [i915]] port clock: 85926, pipe src size: 832x624, pixel rate 57284
>[  183.642701] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  183.642727] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  183.642751] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  183.642784] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8300, ebb4: 0x2000,pll0: 0x1d, pll1: 0x100, pll2: 0x100000, pll3: 0x10000, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  183.642808] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  183.642837] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 1024x768 format = XR24 little-endian (0x34325258)
>[  183.642861] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+1024+768 dst 0x0+1024+768
>[  183.642887] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  183.642912] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  183.642938] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  183.642963] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  183.642993] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  183.643035] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  183.643060] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  183.643163] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  183.643192] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  183.662730] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  183.662773] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  183.771732] ------------[ cut here ]------------
>[  183.771837] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  183.771840] pipe_off wait timed out
>[  183.771842] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  183.771952]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  183.772022] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  183.772025] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  183.772027] Call Trace:
>[  183.772043]  dump_stack+0x63/0x90
>[  183.772052]  __warn+0xcb/0xf0
>[  183.772058]  warn_slowpath_fmt+0x5f/0x80
>[  183.772137]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  183.772209]  haswell_crtc_disable+0x81/0x170 [i915]
>[  183.772282]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  183.772293]  ? __schedule+0x3c1/0x8f0
>[  183.772364]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  183.772414]  drm_atomic_commit+0x4b/0x50 [drm]
>[  183.772437]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  183.772477]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  183.772514]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  183.772521]  ? remove_wait_queue+0x4d/0x60
>[  183.772558]  drm_ioctl+0x1ff/0x460 [drm]
>[  183.772563]  ? __wake_up+0x44/0x50
>[  183.772598]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  183.772609]  ? __vfs_write+0x37/0x160
>[  183.772616]  do_vfs_ioctl+0xa1/0x5d0
>[  183.772621]  ? vfs_write+0x15a/0x1b0
>[  183.772627]  SyS_ioctl+0x79/0x90
>[  183.772635]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  183.772640] RIP: 0033:0x7f68a20128b7
>[  183.772643] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  183.772648] RAX: ffffffffffffffda RBX: 0000000000c7bf00 RCX: 00007f68a20128b7
>[  183.772650] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  183.772653] RBP: 0000000000c348d8 R08: 0000000000000000 R09: 0000000000c33de8
>[  183.772655] R10: 0000000000c33df0 R11: 0000000000000246 R12: 00007ffc1c5b2ea0
>[  183.772657] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
>[  183.772663] ---[ end trace e0ca556a67a9a15b ]---
>[  183.772754] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  183.772827] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  183.772910] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  183.772995] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  183.773096] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  183.773182] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  183.773251] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  183.773322] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  183.773388] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  183.773456] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  183.773521] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  183.773594] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  183.773663] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  183.773731] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  183.773845] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  183.773912] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  183.774102] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  183.774176] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  183.774556] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  183.774644] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  183.794053] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  183.794135] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  183.794203] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  183.794344] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 57284 not found, falling back to defaults
>[  183.794411] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  183.794471] [drm:hsw_audio_config_update [i915]] using automatic N
>[  183.794550] [drm:intel_fbc_enable [i915]] reserved 4153344 bytes of contiguous stolen space for FBC, threshold: 1
>[  183.794615] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  183.807898] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  183.807985] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  183.808104] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  188.808583] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  188.899909] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  188.899928] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  188.899990] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  188.900027] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  188.900055] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  188.900085] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  188.900115] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  188.900143] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  188.900168] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  188.900192] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  188.900207] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 75 49500 800 816 896 1056 600 601 604 625 0x40 0x5
>[  188.900232] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  188.900246] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 75 49500 800 816 896 1056 600 601 604 625 0x40 0x5
>[  188.900272] [drm:intel_dump_pipe_config [i915]] crtc timings: 49500 800 816 896 1056 600 601 604 625, type: 0x40 flags: 0x5
>[  188.900296] [drm:intel_dump_pipe_config [i915]] port clock: 74250, pipe src size: 800x600, pixel rate 49500
>[  188.900322] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  188.900348] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  188.900372] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  188.900405] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x6500, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0xe3958, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  188.900429] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  188.900454] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 832x624 format = XR24 little-endian (0x34325258)
>[  188.900478] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+832+624 dst 0x0+832+624
>[  188.900505] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  188.900531] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  188.900556] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  188.900582] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  188.900611] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  188.900653] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  188.900677] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  188.900792] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  188.900822] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  188.919738] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  188.919780] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  189.027641] ------------[ cut here ]------------
>[  189.027736] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  189.027737] pipe_off wait timed out
>[  189.027738] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  189.027783]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  189.027812] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  189.027813] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  189.027814] Call Trace:
>[  189.027823]  dump_stack+0x63/0x90
>[  189.027828]  __warn+0xcb/0xf0
>[  189.027830]  warn_slowpath_fmt+0x5f/0x80
>[  189.027857]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  189.027882]  haswell_crtc_disable+0x81/0x170 [i915]
>[  189.027907]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  189.027914]  ? __schedule+0x3c1/0x8f0
>[  189.027938]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  189.027959]  drm_atomic_commit+0x4b/0x50 [drm]
>[  189.027969]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  189.027983]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  189.027996]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  189.027999]  ? remove_wait_queue+0x4d/0x60
>[  189.028012]  drm_ioctl+0x1ff/0x460 [drm]
>[  189.028014]  ? __wake_up+0x44/0x50
>[  189.028026]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  189.028030]  ? __vfs_write+0x37/0x160
>[  189.028033]  do_vfs_ioctl+0xa1/0x5d0
>[  189.028035]  ? vfs_write+0x15a/0x1b0
>[  189.028037]  SyS_ioctl+0x79/0x90
>[  189.028040]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  189.028042] RIP: 0033:0x7f68a20128b7
>[  189.028043] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  189.028045] RAX: ffffffffffffffda RBX: 0000000000001f7f RCX: 00007f68a20128b7
>[  189.028046] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  189.028047] RBP: 0000000000000018 R08: 0000000000000000 R09: 0000000000c33de8
>[  189.028047] R10: 0000000000c33df0 R11: 0000000000000246 R12: 00007ffc1c5b36a0
>[  189.028048] R13: 0000000000c7cb70 R14: 00000000000000c7 R15: 00000000000015c4
>[  189.028050] ---[ end trace e0ca556a67a9a15c ]---
>[  189.028090] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  189.028119] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  189.028150] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  189.028186] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  189.028238] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  189.028274] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  189.028298] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  189.028326] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  189.028350] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  189.028375] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  189.028398] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  189.028425] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  189.028449] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  189.028473] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  189.028522] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  189.028545] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  189.028666] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  189.028692] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  189.028863] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  189.028902] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  189.047638] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  189.047675] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  189.047704] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  189.047735] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 49500 not found, falling back to defaults
>[  189.047761] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  189.047786] [drm:hsw_audio_config_update [i915]] using automatic N
>[  189.047822] [drm:intel_fbc_enable [i915]] reserved 3840000 bytes of contiguous stolen space for FBC, threshold: 1
>[  189.047846] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  189.061390] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  189.061428] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  189.061496] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  189.812560] usb 1-5: USB disconnect, device number 5
>[  191.342392] usb 1-5: new low-speed USB device number 6 using xhci_hcd
>[  191.486621] usb 1-5: New USB device found, idVendor=03f0, idProduct=094a
>[  191.486629] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
>[  191.486633] usb 1-5: Product: HP USB Optical Mouse
>[  191.486637] usb 1-5: Manufacturer: PixArt
>[  191.489411] input: PixArt HP USB Optical Mouse as /devices/pci0000:00/0000:00:15.0/usb1/1-5/1-5:1.0/0003:03F0:094A.0005/input/input11
>[  191.546860] hid-generic 0003:03F0:094A.0005: input,hidraw1: USB HID v1.11 Mouse [PixArt HP USB Optical Mouse] on usb-0000:00:15.0-5/input0
>[  191.547049] sdhci-pci 0000:00:1b.0: SDHCI controller found [8086:31ca] (rev 1)
>[  194.061940] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  194.152594] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  194.152613] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  194.152676] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  194.152713] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  194.152741] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  194.152771] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  194.152800] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  194.152829] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  194.152854] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  194.152878] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  194.152894] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 72 50000 800 856 976 1040 600 637 643 666 0x40 0x5
>[  194.152918] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  194.152933] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 72 50000 800 856 976 1040 600 637 643 666 0x40 0x5
>[  194.152958] [drm:intel_dump_pipe_config [i915]] crtc timings: 50000 800 856 976 1040 600 637 643 666, type: 0x40 flags: 0x5
>[  194.152983] [drm:intel_dump_pipe_config [i915]] port clock: 75000, pipe src size: 800x600, pixel rate 50000
>[  194.153008] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  194.153035] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  194.153059] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  194.153091] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x6600, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x1a6666, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  194.153115] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  194.153145] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 800x600 format = XR24 little-endian (0x34325258)
>[  194.153169] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+800+600 dst 0x0+800+600
>[  194.153195] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  194.153220] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  194.153246] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  194.153271] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  194.153301] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  194.153342] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  194.153367] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  194.153467] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  194.153497] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  194.173094] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  194.173136] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  194.279707] ------------[ cut here ]------------
>[  194.279802] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  194.279803] pipe_off wait timed out
>[  194.279804] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  194.279850]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  194.279879] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  194.279880] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  194.279881] Call Trace:
>[  194.279890]  dump_stack+0x63/0x90
>[  194.279895]  __warn+0xcb/0xf0
>[  194.279897]  warn_slowpath_fmt+0x5f/0x80
>[  194.279924]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  194.279949]  haswell_crtc_disable+0x81/0x170 [i915]
>[  194.279975]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  194.279979]  ? __schedule+0x3c1/0x8f0
>[  194.280004]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  194.280025]  drm_atomic_commit+0x4b/0x50 [drm]
>[  194.280035]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  194.280049]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  194.280061]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  194.280065]  ? remove_wait_queue+0x4d/0x60
>[  194.280078]  drm_ioctl+0x1ff/0x460 [drm]
>[  194.280080]  ? __wake_up+0x44/0x50
>[  194.280092]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  194.280096]  ? __vfs_write+0x37/0x160
>[  194.280099]  do_vfs_ioctl+0xa1/0x5d0
>[  194.280101]  ? vfs_write+0x15a/0x1b0
>[  194.280103]  SyS_ioctl+0x79/0x90
>[  194.280106]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  194.280108] RIP: 0033:0x7f68a20128b7
>[  194.280109] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  194.280111] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  194.280112] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  194.280112] RBP: 0000000000c7ea70 R08: 0000000000000000 R09: 0000000000c33de8
>[  194.280113] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000000004
>[  194.280114] R13: 0000000000000201 R14: 0000000001000100 R15: 00000000007f007f
>[  194.280116] ---[ end trace e0ca556a67a9a15d ]---
>[  194.280155] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  194.280182] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  194.280215] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  194.280252] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  194.280304] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  194.280340] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  194.280364] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  194.280393] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  194.280416] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  194.280441] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  194.280464] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  194.280492] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  194.280517] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  194.280541] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  194.280589] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  194.280612] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  194.280734] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  194.280762] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  194.280933] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  194.280973] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  194.298725] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  194.298763] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  194.298793] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  194.298823] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 50000 not found, falling back to defaults
>[  194.298849] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  194.298872] [drm:hsw_audio_config_update [i915]] using automatic N
>[  194.298910] [drm:intel_fbc_enable [i915]] reserved 3840000 bytes of contiguous stolen space for FBC, threshold: 1
>[  194.298934] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  194.312979] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  194.313018] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  194.313085] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  199.313536] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  199.404612] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  199.404629] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  199.404691] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  199.404728] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  199.404755] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  199.404786] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  199.404816] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  199.404845] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  199.404870] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  199.404895] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  199.404911] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
>[  199.404935] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  199.404950] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
>[  199.404976] [drm:intel_dump_pipe_config [i915]] crtc timings: 40000 800 840 968 1056 600 601 605 628, type: 0x40 flags: 0x5
>[  199.405001] [drm:intel_dump_pipe_config [i915]] port clock: 60000, pipe src size: 800x600, pixel rate 40000
>[  199.405026] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  199.405053] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  199.405077] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  199.405110] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8400, ebb4: 0x2000,pll0: 0x1e, pll1: 0x100, pll2: 0x0, pll3: 0x0, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x47
>[  199.405133] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  199.405164] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 800x600 format = XR24 little-endian (0x34325258)
>[  199.405188] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+800+600 dst 0x0+800+600
>[  199.405214] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  199.405239] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  199.405265] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  199.405290] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  199.405320] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  199.405362] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  199.405387] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  199.405486] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  199.405516] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  199.425215] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  199.425258] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  199.532070] ------------[ cut here ]------------
>[  199.532176] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  199.532178] pipe_off wait timed out
>[  199.532180] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  199.532289]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  199.532360] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  199.532363] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  199.532365] Call Trace:
>[  199.532381]  dump_stack+0x63/0x90
>[  199.532390]  __warn+0xcb/0xf0
>[  199.532396]  warn_slowpath_fmt+0x5f/0x80
>[  199.532475]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  199.532548]  haswell_crtc_disable+0x81/0x170 [i915]
>[  199.532621]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  199.532632]  ? __schedule+0x3c1/0x8f0
>[  199.532703]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  199.532750]  drm_atomic_commit+0x4b/0x50 [drm]
>[  199.532772]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  199.532812]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  199.532849]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  199.532856]  ? remove_wait_queue+0x4d/0x60
>[  199.532893]  drm_ioctl+0x1ff/0x460 [drm]
>[  199.532897]  ? __wake_up+0x44/0x50
>[  199.532932]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  199.532941]  ? __vfs_write+0x37/0x160
>[  199.532948]  do_vfs_ioctl+0xa1/0x5d0
>[  199.532953]  ? vfs_write+0x15a/0x1b0
>[  199.532959]  SyS_ioctl+0x79/0x90
>[  199.532967]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  199.532971] RIP: 0033:0x7f68a20128b7
>[  199.532974] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  199.532979] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  199.532981] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  199.532984] RBP: 0000000000c7ec28 R08: 0000000000000000 R09: 0000000000c33de8
>[  199.532986] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000000f
>[  199.532988] R13: 00000000000001ff R14: 0000000001000100 R15: 0000000000000000
>[  199.532994] ---[ end trace e0ca556a67a9a15e ]---
>[  199.533085] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  199.533158] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  199.533241] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  199.533325] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  199.533426] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  199.533513] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  199.533582] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  199.533652] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  199.533719] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  199.533786] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  199.533851] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  199.533925] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  199.533994] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  199.534062] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  199.534170] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  199.534308] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  199.534505] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  199.534578] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  199.534880] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  199.534966] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  199.554384] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  199.554465] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  199.554552] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  199.554583] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 40000 not found, falling back to defaults
>[  199.554609] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  199.554632] [drm:hsw_audio_config_update [i915]] using automatic N
>[  199.554673] [drm:intel_fbc_enable [i915]] reserved 3840000 bytes of contiguous stolen space for FBC, threshold: 1
>[  199.554698] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  199.571389] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  199.571428] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  199.571497] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  204.571950] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  204.661571] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  204.661589] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  204.661652] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  204.661689] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  204.661716] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  204.661746] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  204.661778] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  204.661807] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  204.661832] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  204.661856] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  204.661872] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
>[  204.661897] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  204.661911] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
>[  204.661937] [drm:intel_dump_pipe_config [i915]] crtc timings: 36000 800 824 896 1024 600 601 603 625, type: 0x40 flags: 0x5
>[  204.661962] [drm:intel_dump_pipe_config [i915]] port clock: 54000, pipe src size: 800x600, pixel rate 36000
>[  204.661988] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  204.662014] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  204.662038] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  204.662071] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x6700, ebb4: 0x2000,pll0: 0x1f, pll1: 0x100, pll2: 0x200000, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  204.662094] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  204.662125] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 800x600 format = XR24 little-endian (0x34325258)
>[  204.662149] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+800+600 dst 0x0+800+600
>[  204.662209] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  204.662235] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  204.662266] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  204.662295] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  204.662328] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  204.662376] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  204.662406] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  204.662508] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  204.662537] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  204.682107] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  204.682150] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  204.790702] ------------[ cut here ]------------
>[  204.790782] WARNING: CPU: 0 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  204.790783] pipe_off wait timed out
>[  204.790784] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  204.790829]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  204.790858] CPU: 0 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  204.790859] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  204.790861] Call Trace:
>[  204.790869]  dump_stack+0x63/0x90
>[  204.790874]  __warn+0xcb/0xf0
>[  204.790876]  warn_slowpath_fmt+0x5f/0x80
>[  204.790903]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  204.790929]  haswell_crtc_disable+0x81/0x170 [i915]
>[  204.790954]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  204.790961]  ? __schedule+0x3c1/0x8f0
>[  204.790985]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  204.791005]  drm_atomic_commit+0x4b/0x50 [drm]
>[  204.791015]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  204.791028]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  204.791041]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  204.791045]  ? remove_wait_queue+0x4d/0x60
>[  204.791057]  drm_ioctl+0x1ff/0x460 [drm]
>[  204.791059]  ? __wake_up+0x44/0x50
>[  204.791071]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  204.791075]  ? __vfs_write+0x37/0x160
>[  204.791078]  do_vfs_ioctl+0xa1/0x5d0
>[  204.791080]  ? vfs_write+0x15a/0x1b0
>[  204.791082]  SyS_ioctl+0x79/0x90
>[  204.791086]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  204.791087] RIP: 0033:0x7f68a20128b7
>[  204.791089] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  204.791090] RAX: ffffffffffffffda RBX: 0000000000032000 RCX: 00007f68a20128b7
>[  204.791091] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  204.791092] RBP: 0000000000032000 R08: 0000000000000000 R09: 0000000000c33de8
>[  204.791093] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000cb5b88
>[  204.791094] R13: 0000000000caafd8 R14: 0000000000c7dd70 R15: 00000000ffffffff
>[  204.791096] ---[ end trace e0ca556a67a9a15f ]---
>[  204.791135] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  204.791162] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  204.791195] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  204.791230] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  204.791283] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  204.791318] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  204.791342] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  204.791370] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  204.791394] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  204.791419] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  204.791442] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  204.791469] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  204.791494] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  204.791521] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  204.791568] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  204.791591] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  204.791725] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  204.791751] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  204.791922] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  204.791961] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  204.811425] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  204.811461] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  204.811491] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  204.811523] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 36000 not found, falling back to defaults
>[  204.811548] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  204.811571] [drm:hsw_audio_config_update [i915]] using automatic N
>[  204.811609] [drm:intel_fbc_enable [i915]] reserved 3840000 bytes of contiguous stolen space for FBC, threshold: 1
>[  204.811633] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  204.829621] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  204.829660] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  204.829729] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  209.830151] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  209.916640] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  209.916658] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  209.916721] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  209.916754] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  209.916782] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  209.916812] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  209.916842] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  209.916870] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  209.916895] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  209.916919] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  209.916935] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x576" 50 27000 720 732 796 864 576 581 586 625 0x40 0xa
>[  209.916959] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  209.916974] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x576" 50 27000 720 732 796 864 576 581 586 625 0x40 0xa
>[  209.917000] [drm:intel_dump_pipe_config [i915]] crtc timings: 27000 720 732 796 864 576 581 586 625, type: 0x40 flags: 0xa
>[  209.917024] [drm:intel_dump_pipe_config [i915]] port clock: 40500, pipe src size: 720x576, pixel rate 27000
>[  209.917050] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  209.917079] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  209.917103] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  209.917135] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8600, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  209.917159] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  209.917187] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 800x600 format = XR24 little-endian (0x34325258)
>[  209.917211] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+800+600 dst 0x0+800+600
>[  209.917236] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  209.917262] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  209.917287] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  209.917313] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  209.917343] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  209.917385] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  209.917410] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  209.917505] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  209.917535] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  209.937118] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  209.937219] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  210.043928] ------------[ cut here ]------------
>[  210.044015] WARNING: CPU: 3 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  210.044017] pipe_off wait timed out
>[  210.044019] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  210.044109]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  210.044167] CPU: 3 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  210.044170] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  210.044172] Call Trace:
>[  210.044186]  dump_stack+0x63/0x90
>[  210.044193]  __warn+0xcb/0xf0
>[  210.044198]  warn_slowpath_fmt+0x5f/0x80
>[  210.044261]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  210.044318]  haswell_crtc_disable+0x81/0x170 [i915]
>[  210.044377]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  210.044387]  ? __schedule+0x3c1/0x8f0
>[  210.044443]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  210.044484]  drm_atomic_commit+0x4b/0x50 [drm]
>[  210.044503]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  210.044535]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  210.044564]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  210.044573]  ? remove_wait_queue+0x4d/0x60
>[  210.044602]  drm_ioctl+0x1ff/0x460 [drm]
>[  210.044606]  ? __wake_up+0x44/0x50
>[  210.044633]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  210.044641]  ? __vfs_write+0x37/0x160
>[  210.044647]  do_vfs_ioctl+0xa1/0x5d0
>[  210.044651]  ? vfs_write+0x15a/0x1b0
>[  210.044655]  SyS_ioctl+0x79/0x90
>[  210.044662]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  210.044665] RIP: 0033:0x7f68a20128b7
>[  210.044668] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  210.044672] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  210.044674] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  210.044676] RBP: 0000000000c7f060 R08: 0000000000000000 R09: 0000000000c33de8
>[  210.044678] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000003c
>[  210.044680] R13: 0000000000000224 R14: 0000000001000100 R15: 0000000000000000
>[  210.044685] ---[ end trace e0ca556a67a9a160 ]---
>[  210.044760] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  210.044820] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  210.044886] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  210.044957] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  210.045041] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  210.045111] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  210.045167] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  210.045224] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  210.045278] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  210.045333] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  210.045386] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  210.045445] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  210.045501] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  210.045556] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  210.045637] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  210.045691] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  210.045857] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  210.045918] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  210.046163] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  210.046317] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  210.064935] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  210.064972] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  210.065001] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  210.065032] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 27000 (0x00020000)
>[  210.065056] [drm:hsw_audio_config_update [i915]] using automatic N
>[  210.065094] [drm:intel_fbc_enable [i915]] reserved 3317760 bytes of contiguous stolen space for FBC, threshold: 1
>[  210.065118] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  210.085353] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  210.085392] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  210.085459] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  215.085907] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  215.169681] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  215.169700] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  215.169763] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  215.169799] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  215.169827] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  215.169857] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  215.169887] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  215.169916] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  215.169941] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  215.169965] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  215.169980] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x576i" 50 13500 720 732 795 864 576 580 586 625 0x40 0x101a
>[  215.170005] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  215.170020] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x576i" 50 13500 720 732 795 864 576 580 586 625 0x40 0x101a
>[  215.170045] [drm:intel_dump_pipe_config [i915]] crtc timings: 13500 720 732 795 864 576 580 586 625, type: 0x40 flags: 0x101a
>[  215.170070] [drm:intel_dump_pipe_config [i915]] port clock: 40500, pipe src size: 720x576, pixel rate 13500
>[  215.170095] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  215.170122] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  215.170146] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  215.170217] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  215.170247] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  215.170279] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 720x576 format = XR24 little-endian (0x34325258)
>[  215.170308] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+720+576 dst 0x0+720+576
>[  215.170337] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  215.170365] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  215.170395] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  215.170423] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  215.170456] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  215.170496] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  215.170522] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  215.170618] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  215.170647] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  215.189661] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  215.189704] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  215.295638] ------------[ cut here ]------------
>[  215.295730] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  215.295731] pipe_off wait timed out
>[  215.295732] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  215.295776]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  215.295806] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  215.295807] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  215.295808] Call Trace:
>[  215.295817]  dump_stack+0x63/0x90
>[  215.295821]  __warn+0xcb/0xf0
>[  215.295823]  warn_slowpath_fmt+0x5f/0x80
>[  215.295850]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  215.295875]  haswell_crtc_disable+0x81/0x170 [i915]
>[  215.295901]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  215.295907]  ? __schedule+0x3c1/0x8f0
>[  215.295931]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  215.295953]  drm_atomic_commit+0x4b/0x50 [drm]
>[  215.295963]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  215.295977]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  215.295989]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  215.295993]  ? remove_wait_queue+0x4d/0x60
>[  215.296006]  drm_ioctl+0x1ff/0x460 [drm]
>[  215.296007]  ? __wake_up+0x44/0x50
>[  215.296019]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  215.296023]  ? __vfs_write+0x37/0x160
>[  215.296026]  do_vfs_ioctl+0xa1/0x5d0
>[  215.296028]  ? vfs_write+0x15a/0x1b0
>[  215.296030]  SyS_ioctl+0x79/0x90
>[  215.296033]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  215.296035] RIP: 0033:0x7f68a20128b7
>[  215.296037] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  215.296038] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  215.296039] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  215.296040] RBP: 0000000000c7f2e8 R08: 0000000000000000 R09: 0000000000c33de8
>[  215.296041] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000001b
>[  215.296042] R13: 0000000000000216 R14: 0000000001000100 R15: 0000000000000000
>[  215.296044] ---[ end trace e0ca556a67a9a161 ]---
>[  215.296083] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  215.296110] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  215.296143] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  215.296179] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  215.296231] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  215.296267] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  215.296291] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  215.296320] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  215.296345] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  215.296369] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  215.296391] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  215.296418] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  215.296443] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  215.296467] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  215.296515] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  215.296538] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  215.296660] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  215.296685] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  215.296852] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  215.296892] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  215.315722] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  215.315814] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  215.315892] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  215.315969] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 13500 not found, falling back to defaults
>[  215.316039] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  215.316105] [drm:hsw_audio_config_update [i915]] using automatic N
>[  215.316196] [drm:intel_fbc_enable [i915]] reserved 3317760 bytes of contiguous stolen space for FBC, threshold: 1
>[  215.316266] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  215.336221] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  215.336319] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  215.336447] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  220.336909] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  220.405455] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  220.405474] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  220.405537] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  220.405569] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  220.405596] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  220.405625] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  220.405656] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  220.405685] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  220.405709] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  220.405733] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  220.405749] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480" 60 27027 720 736 798 858 480 489 495 525 0x40 0xa
>[  220.405774] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  220.405789] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480" 60 27027 720 736 798 858 480 489 495 525 0x40 0xa
>[  220.405814] [drm:intel_dump_pipe_config [i915]] crtc timings: 27027 720 736 798 858 480 489 495 525, type: 0x40 flags: 0xa
>[  220.405838] [drm:intel_dump_pipe_config [i915]] port clock: 40540, pipe src size: 720x480, pixel rate 27027
>[  220.405863] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  220.405890] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  220.405913] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  220.405945] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  220.405969] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  220.405994] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 720x576 format = XR24 little-endian (0x34325258)
>[  220.406018] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+720+576 dst 0x0+720+576
>[  220.406043] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  220.406069] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  220.406094] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  220.406120] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  220.406150] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  220.406219] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  220.406250] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  220.406339] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  220.406369] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  220.426000] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  220.426042] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  220.531777] ------------[ cut here ]------------
>[  220.531874] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  220.531875] pipe_off wait timed out
>[  220.531876] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  220.531922]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  220.531951] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  220.531952] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  220.531953] Call Trace:
>[  220.531962]  dump_stack+0x63/0x90
>[  220.531966]  __warn+0xcb/0xf0
>[  220.531968]  warn_slowpath_fmt+0x5f/0x80
>[  220.531996]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  220.532021]  haswell_crtc_disable+0x81/0x170 [i915]
>[  220.532047]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  220.532053]  ? __schedule+0x3c1/0x8f0
>[  220.532078]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  220.532100]  drm_atomic_commit+0x4b/0x50 [drm]
>[  220.532109]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  220.532123]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  220.532136]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  220.532142]  ? remove_wait_queue+0x4d/0x60
>[  220.532155]  drm_ioctl+0x1ff/0x460 [drm]
>[  220.532157]  ? __wake_up+0x44/0x50
>[  220.532169]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  220.532172]  ? __vfs_write+0x37/0x160
>[  220.532176]  do_vfs_ioctl+0xa1/0x5d0
>[  220.532177]  ? vfs_write+0x15a/0x1b0
>[  220.532179]  SyS_ioctl+0x79/0x90
>[  220.532183]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  220.532185] RIP: 0033:0x7f68a20128b7
>[  220.532186] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  220.532187] RAX: ffffffffffffffda RBX: 00007ffc1c5b3620 RCX: 00007f68a20128b7
>[  220.532188] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  220.532189] RBP: 000000000001a9ce R08: 0000000000000000 R09: 0000000000c33de8
>[  220.532190] R10: 0000000000c33df0 R11: 0000000000000246 R12: 00000000000240f9
>[  220.532191] R13: 00000000000000af R14: 0000000000c349cc R15: 00007ffc1c5b3620
>[  220.532193] ---[ end trace e0ca556a67a9a162 ]---
>[  220.532232] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  220.532259] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  220.532291] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  220.532328] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  220.532381] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  220.532417] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  220.532441] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  220.532470] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  220.532493] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  220.532519] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  220.532542] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  220.532569] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  220.532593] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  220.532620] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  220.532668] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  220.532691] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  220.532812] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  220.532839] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  220.533016] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  220.533053] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  220.551655] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  220.551730] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  220.551793] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  220.551858] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 27027 (0x00030000)
>[  220.551912] [drm:hsw_audio_config_update [i915]] using automatic N
>[  220.551985] [drm:intel_fbc_enable [i915]] reserved 2764800 bytes of contiguous stolen space for FBC, threshold: 1
>[  220.552040] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  220.568765] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  220.568844] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  220.568953] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  225.569421] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  225.637839] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  225.637858] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  225.637923] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  225.637954] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  225.637981] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  225.638010] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  225.638041] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  225.638070] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  225.638095] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  225.638119] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  225.638136] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480" 60 27000 720 736 798 858 480 489 495 525 0x40 0xa
>[  225.638161] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  225.638206] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480" 60 27000 720 736 798 858 480 489 495 525 0x40 0xa
>[  225.638237] [drm:intel_dump_pipe_config [i915]] crtc timings: 27000 720 736 798 858 480 489 495 525, type: 0x40 flags: 0xa
>[  225.638266] [drm:intel_dump_pipe_config [i915]] port clock: 40500, pipe src size: 720x480, pixel rate 27000
>[  225.638297] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  225.638329] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  225.638358] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  225.638392] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x1ba5e3, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  225.638421] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  225.638449] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 720x480 format = XR24 little-endian (0x34325258)
>[  225.638478] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+720+480 dst 0x0+720+480
>[  225.638504] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  225.638529] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  225.638555] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  225.638581] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  225.638613] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  225.638656] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  225.638682] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  225.638772] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  225.638803] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  225.658421] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  225.658498] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  225.766705] ------------[ cut here ]------------
>[  225.766810] WARNING: CPU: 0 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  225.766812] pipe_off wait timed out
>[  225.766814] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  225.766923]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  225.766993] CPU: 0 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  225.766996] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  225.766998] Call Trace:
>[  225.767015]  dump_stack+0x63/0x90
>[  225.767023]  __warn+0xcb/0xf0
>[  225.767029]  warn_slowpath_fmt+0x5f/0x80
>[  225.767109]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  225.767181]  haswell_crtc_disable+0x81/0x170 [i915]
>[  225.767255]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  225.767266]  ? __schedule+0x3c1/0x8f0
>[  225.767338]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  225.767385]  drm_atomic_commit+0x4b/0x50 [drm]
>[  225.767408]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  225.767447]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  225.767484]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  225.767491]  ? remove_wait_queue+0x4d/0x60
>[  225.767528]  drm_ioctl+0x1ff/0x460 [drm]
>[  225.767533]  ? __wake_up+0x44/0x50
>[  225.767567]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  225.767578]  ? __vfs_write+0x37/0x160
>[  225.767586]  do_vfs_ioctl+0xa1/0x5d0
>[  225.767591]  ? vfs_write+0x15a/0x1b0
>[  225.767597]  SyS_ioctl+0x79/0x90
>[  225.767605]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  225.767610] RIP: 0033:0x7f68a20128b7
>[  225.767613] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  225.767618] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  225.767620] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  225.767622] RBP: 0000000000c7f840 R08: 0000000000000000 R09: 0000000000c33de8
>[  225.767625] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000005a
>[  225.767627] R13: 00000000000001ad R14: 0000000001000100 R15: 0000000000000000
>[  225.767633] ---[ end trace e0ca556a67a9a163 ]---
>[  225.767722] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  225.767796] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  225.767879] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  225.767964] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  225.768065] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  225.768152] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  225.768221] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  225.768292] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  225.768359] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  225.768426] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  225.768491] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  225.768565] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  225.768634] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  225.768705] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  225.768813] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  225.768881] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  225.769071] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  225.769143] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  225.769421] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  225.769512] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  225.788727] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  225.788809] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  225.788878] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  225.788948] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 27000 (0x00020000)
>[  225.789008] [drm:hsw_audio_config_update [i915]] using automatic N
>[  225.789088] [drm:intel_fbc_enable [i915]] reserved 2764800 bytes of contiguous stolen space for FBC, threshold: 1
>[  225.789150] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  225.805877] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  225.805974] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  225.806102] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  230.806670] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  230.874530] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  230.874548] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  230.874612] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  230.874644] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  230.874672] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  230.874702] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  230.874732] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  230.874761] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  230.874786] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  230.874811] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  230.874827] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480i" 60 13514 720 739 801 858 480 488 494 525 0x40 0x101a
>[  230.874851] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  230.874866] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480i" 60 13514 720 739 801 858 480 488 494 525 0x40 0x101a
>[  230.874892] [drm:intel_dump_pipe_config [i915]] crtc timings: 13514 720 739 801 858 480 488 494 525, type: 0x40 flags: 0x101a
>[  230.874917] [drm:intel_dump_pipe_config [i915]] port clock: 40542, pipe src size: 720x480, pixel rate 13514
>[  230.874943] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  230.874970] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  230.874994] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  230.875027] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  230.875051] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  230.875079] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 720x480 format = XR24 little-endian (0x34325258)
>[  230.875103] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+720+480 dst 0x0+720+480
>[  230.875129] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  230.875155] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  230.875181] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  230.875207] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  230.875237] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  230.875279] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  230.875303] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  230.875393] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  230.875423] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  230.894897] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  230.894940] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  231.004241] ------------[ cut here ]------------
>[  231.004337] WARNING: CPU: 3 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  231.004338] pipe_off wait timed out
>[  231.004339] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  231.004385]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  231.004414] CPU: 3 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  231.004415] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  231.004416] Call Trace:
>[  231.004425]  dump_stack+0x63/0x90
>[  231.004429]  __warn+0xcb/0xf0
>[  231.004431]  warn_slowpath_fmt+0x5f/0x80
>[  231.004459]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  231.004484]  haswell_crtc_disable+0x81/0x170 [i915]
>[  231.004510]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  231.004517]  ? __schedule+0x3c1/0x8f0
>[  231.004542]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  231.004562]  drm_atomic_commit+0x4b/0x50 [drm]
>[  231.004572]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  231.004585]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  231.004601]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  231.004604]  ? remove_wait_queue+0x4d/0x60
>[  231.004617]  drm_ioctl+0x1ff/0x460 [drm]
>[  231.004619]  ? __wake_up+0x44/0x50
>[  231.004631]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  231.004635]  ? __vfs_write+0x37/0x160
>[  231.004638]  do_vfs_ioctl+0xa1/0x5d0
>[  231.004640]  ? vfs_write+0x15a/0x1b0
>[  231.004643]  SyS_ioctl+0x79/0x90
>[  231.004646]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  231.004648] RIP: 0033:0x7f68a20128b7
>[  231.004649] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  231.004651] RAX: ffffffffffffffda RBX: 00007ffc1c5b36a0 RCX: 00007f68a20128b7
>[  231.004652] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  231.004652] RBP: 0000000000000578 R08: 0000000000000000 R09: 0000000000c33de8
>[  231.004653] R10: 0000000000c33df0 R11: 0000000000000246 R12: 00007ffc1c5b2c00
>[  231.004654] R13: 0000000000c350ec R14: 0000000000000032 R15: 00007ffc1c5b36a0
>[  231.004656] ---[ end trace e0ca556a67a9a164 ]---
>[  231.004695] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  231.004722] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  231.004754] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  231.004791] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  231.004843] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  231.004879] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  231.004903] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  231.004929] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  231.004968] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  231.004992] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  231.005016] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  231.005042] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  231.005068] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  231.005093] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  231.005139] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  231.005164] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  231.005296] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  231.005322] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  231.005485] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  231.005525] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  231.024067] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  231.024102] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  231.024132] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  231.024165] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 13514 not found, falling back to defaults
>[  231.024189] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  231.024214] [drm:hsw_audio_config_update [i915]] using automatic N
>[  231.024251] [drm:intel_fbc_enable [i915]] reserved 2764800 bytes of contiguous stolen space for FBC, threshold: 1
>[  231.024275] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  231.041170] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  231.041209] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  231.041276] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  236.041730] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  236.110032] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  236.110051] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  236.110114] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  236.110147] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  236.110174] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  236.110229] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  236.110265] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  236.110298] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  236.110327] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  236.110354] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  236.110371] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480i" 60 13500 720 739 801 858 480 488 494 525 0x40 0x101a
>[  236.110398] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  236.110414] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x480i" 60 13500 720 739 801 858 480 488 494 525 0x40 0x101a
>[  236.110443] [drm:intel_dump_pipe_config [i915]] crtc timings: 13500 720 739 801 858 480 488 494 525, type: 0x40 flags: 0x101a
>[  236.110469] [drm:intel_dump_pipe_config [i915]] port clock: 40500, pipe src size: 720x480, pixel rate 13500
>[  236.110498] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  236.110526] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  236.110552] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  236.110584] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x1bc01a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  236.110610] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  236.110639] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 720x480 format = XR24 little-endian (0x34325258)
>[  236.110666] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+720+480 dst 0x0+720+480
>[  236.110691] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  236.110720] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  236.110745] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  236.110773] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  236.110803] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  236.110844] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  236.110871] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  236.110960] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  236.110989] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  236.130555] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  236.130597] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  236.238242] ------------[ cut here ]------------
>[  236.238336] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  236.238337] pipe_off wait timed out
>[  236.238338] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  236.238381]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  236.238410] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  236.238411] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  236.238412] Call Trace:
>[  236.238421]  dump_stack+0x63/0x90
>[  236.238426]  __warn+0xcb/0xf0
>[  236.238428]  warn_slowpath_fmt+0x5f/0x80
>[  236.238455]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  236.238481]  haswell_crtc_disable+0x81/0x170 [i915]
>[  236.238506]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  236.238513]  ? __schedule+0x3c1/0x8f0
>[  236.238538]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  236.238560]  drm_atomic_commit+0x4b/0x50 [drm]
>[  236.238570]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  236.238584]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  236.238597]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  236.238605]  ? remove_wait_queue+0x4d/0x60
>[  236.238618]  drm_ioctl+0x1ff/0x460 [drm]
>[  236.238619]  ? __wake_up+0x44/0x50
>[  236.238632]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  236.238636]  ? __vfs_write+0x37/0x160
>[  236.238639]  do_vfs_ioctl+0xa1/0x5d0
>[  236.238641]  ? vfs_write+0x15a/0x1b0
>[  236.238643]  SyS_ioctl+0x79/0x90
>[  236.238646]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  236.238648] RIP: 0033:0x7f68a20128b7
>[  236.238649] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  236.238651] RAX: ffffffffffffffda RBX: 00007ffc1c5b2118 RCX: 00007f68a20128b7
>[  236.238651] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  236.238652] RBP: 00000000000002c7 R08: 0000000000000000 R09: 0000000000c33de8
>[  236.238653] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000c7efa0
>[  236.238654] R13: 0000000000c7f628 R14: 0000000000c7e870 R15: 0000000000000000
>[  236.238656] ---[ end trace e0ca556a67a9a165 ]---
>[  236.238695] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  236.238722] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  236.238755] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  236.238790] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  236.238843] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  236.238879] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  236.238903] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  236.238931] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  236.238954] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  236.238980] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  236.239002] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  236.239029] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  236.239054] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  236.239078] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  236.239126] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  236.239152] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  236.239274] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  236.239299] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  236.239461] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  236.239501] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  236.258888] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  236.258963] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  236.259026] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  236.259088] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 13500 not found, falling back to defaults
>[  236.259143] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  236.259196] [drm:hsw_audio_config_update [i915]] using automatic N
>[  236.259270] [drm:intel_fbc_enable [i915]] reserved 2764800 bytes of contiguous stolen space for FBC, threshold: 1
>[  236.259328] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  236.276021] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  236.276060] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  236.276128] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  241.276572] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  241.343600] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  241.343618] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  241.343681] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  241.343718] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  241.343746] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  241.343776] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  241.343806] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  241.343835] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  241.343860] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  241.343884] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  241.343899] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 75 31500 640 656 720 840 480 481 484 500 0x40 0xa
>[  241.343924] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  241.343939] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 75 31500 640 656 720 840 480 481 484 500 0x40 0xa
>[  241.343964] [drm:intel_dump_pipe_config [i915]] crtc timings: 31500 640 656 720 840 480 481 484 500, type: 0x40 flags: 0xa
>[  241.343988] [drm:intel_dump_pipe_config [i915]] port clock: 47250, pipe src size: 640x480, pixel rate 31500
>[  241.344014] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  241.344041] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  241.344065] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  241.344097] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x20, pll1: 0x100, pll2: 0x19999a, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  241.344120] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  241.344146] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 720x480 format = XR24 little-endian (0x34325258)
>[  241.344173] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+720+480 dst 0x0+720+480
>[  241.344197] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  241.344222] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  241.344247] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  241.344273] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  241.344302] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  241.344344] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  241.344369] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  241.344455] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  241.344485] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  241.363889] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  241.363933] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  241.470473] ------------[ cut here ]------------
>[  241.470566] WARNING: CPU: 3 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  241.470567] pipe_off wait timed out
>[  241.470568] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  241.470612]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  241.470640] CPU: 3 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  241.470642] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  241.470643] Call Trace:
>[  241.470652]  dump_stack+0x63/0x90
>[  241.470656]  __warn+0xcb/0xf0
>[  241.470658]  warn_slowpath_fmt+0x5f/0x80
>[  241.470686]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  241.470711]  haswell_crtc_disable+0x81/0x170 [i915]
>[  241.470737]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  241.470744]  ? __schedule+0x3c1/0x8f0
>[  241.470768]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  241.470791]  drm_atomic_commit+0x4b/0x50 [drm]
>[  241.470800]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  241.470814]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  241.470827]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  241.470830]  ? remove_wait_queue+0x4d/0x60
>[  241.470844]  drm_ioctl+0x1ff/0x460 [drm]
>[  241.470845]  ? __wake_up+0x44/0x50
>[  241.470857]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  241.470861]  ? __vfs_write+0x37/0x160
>[  241.470865]  do_vfs_ioctl+0xa1/0x5d0
>[  241.470866]  ? vfs_write+0x15a/0x1b0
>[  241.470868]  SyS_ioctl+0x79/0x90
>[  241.470872]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  241.470874] RIP: 0033:0x7f68a20128b7
>[  241.470875] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  241.470876] RAX: ffffffffffffffda RBX: 00000000000240bc RCX: 00007f68a20128b7
>[  241.470877] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  241.470878] RBP: 0000000000024465 R08: 0000000000000000 R09: 0000000000c33de8
>[  241.470879] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000cacb00
>[  241.470880] R13: 0000000000cac898 R14: 0000000000c7dfa0 R15: 0000000000000000
>[  241.470882] ---[ end trace e0ca556a67a9a166 ]---
>[  241.470921] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  241.470948] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  241.470980] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  241.471017] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  241.471069] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  241.471105] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  241.471129] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  241.471157] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  241.471180] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  241.471205] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  241.471228] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  241.471255] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  241.471279] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  241.471303] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  241.471352] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  241.471375] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  241.471500] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  241.471525] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  241.471696] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  241.471736] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  241.490428] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  241.490503] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  241.490567] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  241.490633] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 31500 not found, falling back to defaults
>[  241.490690] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  241.490743] [drm:hsw_audio_config_update [i915]] using automatic N
>[  241.490816] [drm:intel_fbc_enable [i915]] reserved 2457600 bytes of contiguous stolen space for FBC, threshold: 1
>[  241.490872] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  241.504180] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  241.504219] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  241.504288] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  246.504739] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  246.571912] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  246.571930] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  246.571992] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  246.572029] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  246.572056] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  246.572086] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  246.572116] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  246.572144] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  246.572169] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  246.572193] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  246.572209] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 73 31500 640 664 704 832 480 489 492 520 0x40 0xa
>[  246.572233] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  246.572248] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 73 31500 640 664 704 832 480 489 492 520 0x40 0xa
>[  246.572274] [drm:intel_dump_pipe_config [i915]] crtc timings: 31500 640 664 704 832 480 489 492 520, type: 0x40 flags: 0xa
>[  246.572298] [drm:intel_dump_pipe_config [i915]] port clock: 47250, pipe src size: 640x480, pixel rate 31500
>[  246.572324] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  246.572351] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  246.572375] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  246.572408] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8700, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x4cccd, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  246.572432] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  246.572462] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 640x480 format = XR24 little-endian (0x34325258)
>[  246.572487] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+640+480 dst 0x0+640+480
>[  246.572513] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  246.572539] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  246.572564] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  246.572590] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  246.572620] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  246.572664] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  246.572689] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  246.572775] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  246.572805] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  246.591890] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  246.591933] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  246.699959] ------------[ cut here ]------------
>[  246.700055] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  246.700056] pipe_off wait timed out
>[  246.700057] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  246.700103]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  246.700132] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  246.700133] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  246.700134] Call Trace:
>[  246.700143]  dump_stack+0x63/0x90
>[  246.700148]  __warn+0xcb/0xf0
>[  246.700150]  warn_slowpath_fmt+0x5f/0x80
>[  246.700177]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  246.700202]  haswell_crtc_disable+0x81/0x170 [i915]
>[  246.700227]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  246.700234]  ? __schedule+0x3c1/0x8f0
>[  246.700261]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  246.700281]  drm_atomic_commit+0x4b/0x50 [drm]
>[  246.700290]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  246.700304]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  246.700317]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  246.700320]  ? remove_wait_queue+0x4d/0x60
>[  246.700334]  drm_ioctl+0x1ff/0x460 [drm]
>[  246.700335]  ? __wake_up+0x44/0x50
>[  246.700347]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  246.700351]  ? __vfs_write+0x37/0x160
>[  246.700354]  do_vfs_ioctl+0xa1/0x5d0
>[  246.700356]  ? vfs_write+0x15a/0x1b0
>[  246.700358]  SyS_ioctl+0x79/0x90
>[  246.700361]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  246.700363] RIP: 0033:0x7f68a20128b7
>[  246.700364] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  246.700366] RAX: ffffffffffffffda RBX: 00000000000242be RCX: 00007f68a20128b7
>[  246.700367] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  246.700368] RBP: 00000000000245dc R08: 0000000000000000 R09: 0000000000c33de8
>[  246.700369] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000c84bc8
>[  246.700369] R13: 0000000000c84c20 R14: 0000000000c7e170 R15: 00000000ffffffff
>[  246.700372] ---[ end trace e0ca556a67a9a167 ]---
>[  246.700411] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  246.700438] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  246.700471] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  246.700507] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  246.700559] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  246.700595] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  246.700619] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  246.700647] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  246.700671] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  246.700696] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  246.700719] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  246.700746] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  246.700770] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  246.700794] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  246.700842] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  246.700866] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  246.700988] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  246.701016] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  246.701187] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  246.701227] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  246.720552] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  246.720635] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  246.720704] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  246.720774] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 31500 not found, falling back to defaults
>[  246.720837] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  246.720898] [drm:hsw_audio_config_update [i915]] using automatic N
>[  246.720977] [drm:intel_fbc_enable [i915]] reserved 2457600 bytes of contiguous stolen space for FBC, threshold: 1
>[  246.721040] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  246.734689] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  246.734784] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  246.734914] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  251.660549] usb 1-5: USB disconnect, device number 6
>[  251.735340] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  251.794998] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  251.795017] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  251.795078] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  251.795114] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  251.795142] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  251.795172] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  251.795202] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  251.795232] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  251.795256] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  251.795281] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  251.795296] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 67 30240 640 704 768 864 480 483 486 525 0x40 0xa
>[  251.795321] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  251.795336] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 67 30240 640 704 768 864 480 483 486 525 0x40 0xa
>[  251.795361] [drm:intel_dump_pipe_config [i915]] crtc timings: 30240 640 704 768 864 480 483 486 525, type: 0x40 flags: 0xa
>[  251.795385] [drm:intel_dump_pipe_config [i915]] port clock: 45360, pipe src size: 640x480, pixel rate 30240
>[  251.795411] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  251.795438] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  251.795462] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  251.795495] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8700, ebb4: 0x2000,pll0: 0x21, pll1: 0x100, pll2: 0x4cccd, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  251.795518] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  251.795548] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 640x480 format = XR24 little-endian (0x34325258)
>[  251.795572] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+640+480 dst 0x0+640+480
>[  251.795598] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  251.795623] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  251.795649] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  251.795674] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  251.795704] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  251.795745] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  251.795769] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  251.795856] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  251.795886] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  251.815550] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  251.815593] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  251.923465] ------------[ cut here ]------------
>[  251.923571] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  251.923573] pipe_off wait timed out
>[  251.923575] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  251.923685]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  251.923754] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  251.923757] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  251.923760] Call Trace:
>[  251.923776]  dump_stack+0x63/0x90
>[  251.923784]  __warn+0xcb/0xf0
>[  251.923790]  warn_slowpath_fmt+0x5f/0x80
>[  251.923870]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  251.923942]  haswell_crtc_disable+0x81/0x170 [i915]
>[  251.924015]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  251.924025]  ? __schedule+0x3c1/0x8f0
>[  251.924096]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  251.924143]  drm_atomic_commit+0x4b/0x50 [drm]
>[  251.924165]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  251.924205]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  251.924241]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  251.924249]  ? remove_wait_queue+0x4d/0x60
>[  251.924285]  drm_ioctl+0x1ff/0x460 [drm]
>[  251.924290]  ? __wake_up+0x44/0x50
>[  251.924325]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  251.924333]  ? __vfs_write+0x37/0x160
>[  251.924341]  do_vfs_ioctl+0xa1/0x5d0
>[  251.924346]  ? vfs_write+0x15a/0x1b0
>[  251.924351]  SyS_ioctl+0x79/0x90
>[  251.924359]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  251.924363] RIP: 0033:0x7f68a20128b7
>[  251.924366] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  251.924371] RAX: ffffffffffffffda RBX: 0000000000021f82 RCX: 00007f68a20128b7
>[  251.924374] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  251.924376] RBP: 0000000000022178 R08: 0000000000000000 R09: 0000000000c33de8
>[  251.924378] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000c82120
>[  251.924380] R13: 0000000000c82438 R14: 0000000000c81b50 R15: 0000000000000001
>[  251.924386] ---[ end trace e0ca556a67a9a168 ]---
>[  251.924477] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  251.924551] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  251.924633] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  251.924717] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  251.924818] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  251.924904] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  251.924974] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  251.925044] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  251.925111] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  251.925178] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  251.925244] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  251.925317] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  251.925387] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  251.925455] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  251.925562] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  251.925630] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  251.925819] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  251.925890] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  251.926190] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  251.926366] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  251.944856] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  251.944948] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  251.945026] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  251.945104] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 30240 not found, falling back to defaults
>[  251.945174] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  251.945240] [drm:hsw_audio_config_update [i915]] using automatic N
>[  251.945329] [drm:intel_fbc_enable [i915]] reserved 2457600 bytes of contiguous stolen space for FBC, threshold: 1
>[  251.945399] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  251.960317] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  251.960413] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  251.960542] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  253.190329] usb 1-5: new low-speed USB device number 7 using xhci_hcd
>[  253.334611] usb 1-5: New USB device found, idVendor=03f0, idProduct=094a
>[  253.334619] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
>[  253.334623] usb 1-5: Product: HP USB Optical Mouse
>[  253.334627] usb 1-5: Manufacturer: PixArt
>[  253.338951] input: PixArt HP USB Optical Mouse as /devices/pci0000:00/0000:00:15.0/usb1/1-5/1-5:1.0/0003:03F0:094A.0006/input/input12
>[  253.339549] hid-generic 0003:03F0:094A.0006: input,hidraw1: USB HID v1.11 Mouse [PixArt HP USB Optical Mouse] on usb-0000:00:15.0-5/input0
>[  253.339718] sdhci-pci 0000:00:1b.0: SDHCI controller found [8086:31ca] (rev 1)
>[  256.960988] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  257.026849] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  257.026867] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  257.026930] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  257.026962] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  257.026989] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  257.027019] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  257.027049] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  257.027078] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  257.027103] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  257.027127] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  257.027143] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 60 25200 640 656 752 800 480 490 492 525 0x40 0xa
>[  257.027167] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  257.027182] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 60 25200 640 656 752 800 480 490 492 525 0x40 0xa
>[  257.027208] [drm:intel_dump_pipe_config [i915]] crtc timings: 25200 640 656 752 800 480 490 492 525, type: 0x40 flags: 0xa
>[  257.027232] [drm:intel_dump_pipe_config [i915]] port clock: 37800, pipe src size: 640x480, pixel rate 25200
>[  257.027258] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  257.027285] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  257.027309] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  257.027341] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8700, ebb4: 0x2000,pll0: 0x1f, pll1: 0x100, pll2: 0x3020c5, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  257.027365] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  257.027393] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 640x480 format = XR24 little-endian (0x34325258)
>[  257.027417] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+640+480 dst 0x0+640+480
>[  257.027443] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  257.027468] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  257.027493] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  257.027518] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  257.027548] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  257.027587] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  257.027612] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  257.027698] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  257.027728] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  257.047414] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  257.047457] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  257.155599] ------------[ cut here ]------------
>[  257.155695] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  257.155696] pipe_off wait timed out
>[  257.155697] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  257.155743]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  257.155772] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  257.155773] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  257.155774] Call Trace:
>[  257.155783]  dump_stack+0x63/0x90
>[  257.155787]  __warn+0xcb/0xf0
>[  257.155789]  warn_slowpath_fmt+0x5f/0x80
>[  257.155817]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  257.155842]  haswell_crtc_disable+0x81/0x170 [i915]
>[  257.155867]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  257.155874]  ? __schedule+0x3c1/0x8f0
>[  257.155898]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  257.155921]  drm_atomic_commit+0x4b/0x50 [drm]
>[  257.155930]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  257.155944]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  257.155957]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  257.155963]  ? remove_wait_queue+0x4d/0x60
>[  257.155976]  drm_ioctl+0x1ff/0x460 [drm]
>[  257.155977]  ? __wake_up+0x44/0x50
>[  257.155989]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  257.155993]  ? __vfs_write+0x37/0x160
>[  257.155997]  do_vfs_ioctl+0xa1/0x5d0
>[  257.155998]  ? vfs_write+0x15a/0x1b0
>[  257.156000]  SyS_ioctl+0x79/0x90
>[  257.156004]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  257.156006] RIP: 0033:0x7f68a20128b7
>[  257.156007] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  257.156009] RAX: ffffffffffffffda RBX: 00007ffc1c5b2220 RCX: 00007f68a20128b7
>[  257.156009] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  257.156010] RBP: 0000000000c9ed08 R08: 0000000000000000 R09: 0000000000c33de8
>[  257.156011] R10: 0000000000c33df0 R11: 0000000000000246 R12: 00007ffc1c5b21f8
>[  257.156012] R13: 00000000ffffffff R14: 0000000000c81d20 R15: 0000000000000000
>[  257.156014] ---[ end trace e0ca556a67a9a169 ]---
>[  257.156054] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  257.156081] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  257.156113] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  257.156150] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  257.156202] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  257.156239] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  257.156263] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  257.156291] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  257.156314] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  257.156339] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  257.156362] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  257.156389] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  257.156413] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  257.156437] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  257.156484] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  257.156507] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  257.156631] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  257.156659] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  257.156822] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  257.156861] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  257.175794] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  257.175885] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  257.175961] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  257.176041] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  257.176108] [drm:hsw_audio_config_update [i915]] using automatic N
>[  257.176198] [drm:intel_fbc_enable [i915]] reserved 2457600 bytes of contiguous stolen space for FBC, threshold: 1
>[  257.176268] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  257.192903] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  257.193000] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  257.193129] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  262.193578] [drm:drm_mode_addfb2 [drm]] [FB:76]
>[  262.253153] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  262.253171] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  262.253234] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  262.253266] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  262.253293] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  262.253323] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  262.253353] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  262.253381] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  262.253406] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  262.253431] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  262.253446] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa
>[  262.253471] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  262.253486] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa
>[  262.253511] [drm:intel_dump_pipe_config [i915]] crtc timings: 25175 640 656 752 800 480 490 492 525, type: 0x40 flags: 0xa
>[  262.253536] [drm:intel_dump_pipe_config [i915]] port clock: 37762, pipe src size: 640x480, pixel rate 25175
>[  262.253562] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  262.253588] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  262.253612] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  262.253644] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x1e, pll1: 0x100, pll2: 0xf5c29, pll3: 0x10000, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  262.253668] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  262.253699] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:62, fb = 640x480 format = XR24 little-endian (0x34325258)
>[  262.253723] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+640+480 dst 0x0+640+480
>[  262.253749] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  262.253774] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  262.253800] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  262.253825] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  262.253856] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  262.253897] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  262.253923] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  262.254032] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  262.254068] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  262.273646] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  262.273746] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  262.378910] ------------[ cut here ]------------
>[  262.379015] WARNING: CPU: 1 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  262.379018] pipe_off wait timed out
>[  262.379020] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  262.379128]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  262.379198] CPU: 1 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  262.379201] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  262.379203] Call Trace:
>[  262.379219]  dump_stack+0x63/0x90
>[  262.379228]  __warn+0xcb/0xf0
>[  262.379234]  warn_slowpath_fmt+0x5f/0x80
>[  262.379313]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  262.379386]  haswell_crtc_disable+0x81/0x170 [i915]
>[  262.379459]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  262.379468]  ? __schedule+0x3c1/0x8f0
>[  262.379539]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  262.379586]  drm_atomic_commit+0x4b/0x50 [drm]
>[  262.379608]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  262.379648]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  262.379685]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  262.379692]  ? remove_wait_queue+0x4d/0x60
>[  262.379729]  drm_ioctl+0x1ff/0x460 [drm]
>[  262.379734]  ? __wake_up+0x44/0x50
>[  262.379768]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  262.379776]  ? __vfs_write+0x37/0x160
>[  262.379784]  do_vfs_ioctl+0xa1/0x5d0
>[  262.379789]  ? vfs_write+0x15a/0x1b0
>[  262.379795]  SyS_ioctl+0x79/0x90
>[  262.379803]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  262.379807] RIP: 0033:0x7f68a20128b7
>[  262.379810] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  262.379815] RAX: ffffffffffffffda RBX: 00007ffc1c5b21c0 RCX: 00007f68a20128b7
>[  262.379818] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  262.379820] RBP: 0000000000c806e0 R08: 0000000000000000 R09: 0000000000c33de8
>[  262.379823] R10: 0000000000c33df0 R11: 0000000000000246 R12: 000000000000000a
>[  262.379825] R13: 00000000000001ac R14: 0000000001000100 R15: 0000000000000000
>[  262.379831] ---[ end trace e0ca556a67a9a16a ]---
>[  262.379921] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  262.379995] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  262.380077] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  262.380162] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  262.380263] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  262.380349] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  262.380419] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  262.380489] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  262.380555] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  262.380622] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  262.380687] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  262.380760] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  262.380830] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  262.380900] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  262.381005] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  262.381072] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  262.381263] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  262.381336] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  262.381612] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  262.381703] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  262.401025] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  262.401108] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  262.401177] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  262.401247] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25175 (0x00000000)
>[  262.401307] [drm:hsw_audio_config_update [i915]] using automatic N
>[  262.401387] [drm:intel_fbc_enable [i915]] reserved 2457600 bytes of contiguous stolen space for FBC, threshold: 1
>[  262.401449] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  262.418177] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  262.418328] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  262.418456] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  267.418831] [drm:drm_mode_addfb2 [drm]] [FB:62]
>[  267.477669] [drm:drm_mode_setcrtc [drm]] [CRTC:36:pipe A]
>[  267.477687] [drm:drm_mode_setcrtc [drm]] [CONNECTOR:75:HDMI-A-2]
>[  267.477750] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  267.477786] [drm:intel_hdmi_compute_config [i915]] picking bpc to 12 for HDMI output
>[  267.477814] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 36 for HDMI
>[  267.477844] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 36, dithering: 0
>[  267.477874] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  267.477905] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: A, pipe bpp: 36, dithering: 0
>[  267.477930] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  267.477954] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  267.477970] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x400" 70 28320 720 738 846 900 400 412 414 449 0x40 0x6
>[  267.477995] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  267.478009] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"720x400" 70 28320 720 738 846 900 400 412 414 449 0x40 0x6
>[  267.478036] [drm:intel_dump_pipe_config [i915]] crtc timings: 28320 720 738 846 900 400 412 414 449, type: 0x40 flags: 0x6
>[  267.478061] [drm:intel_dump_pipe_config [i915]] port clock: 42480, pipe src size: 720x400, pixel rate 28320
>[  267.478087] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  267.478114] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  267.478138] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  267.478171] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x8800, ebb4: 0x2000,pll0: 0x1e, pll1: 0x100, pll2: 0xd6a16, pll3: 0x10000, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  267.478224] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  267.478258] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] FB:76, fb = 640x480 format = XR24 little-endian (0x34325258)
>[  267.478288] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+640+480 dst 0x0+640+480
>[  267.478317] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  267.478347] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  267.478376] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  267.478405] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  267.478438] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  267.478479] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL C
>[  267.478506] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe A
>[  267.478594] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  267.478623] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  267.496923] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  267.497023] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  267.603885] ------------[ cut here ]------------
>[  267.603981] WARNING: CPU: 2 PID: 1298 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  267.603982] pipe_off wait timed out
>[  267.603983] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  267.604028]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  267.604057] CPU: 2 PID: 1298 Comm: testdisplay Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  267.604058] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  267.604059] Call Trace:
>[  267.604068]  dump_stack+0x63/0x90
>[  267.604072]  __warn+0xcb/0xf0
>[  267.604074]  warn_slowpath_fmt+0x5f/0x80
>[  267.604102]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  267.604127]  haswell_crtc_disable+0x81/0x170 [i915]
>[  267.604154]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  267.604160]  ? __schedule+0x3c1/0x8f0
>[  267.604185]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  267.604206]  drm_atomic_commit+0x4b/0x50 [drm]
>[  267.604215]  drm_atomic_helper_set_config+0x83/0xc0 [drm_kms_helper]
>[  267.604229]  drm_mode_set_config_internal+0x65/0x110 [drm]
>[  267.604242]  drm_mode_setcrtc+0x42c/0x500 [drm]
>[  267.604245]  ? remove_wait_queue+0x4d/0x60
>[  267.604258]  drm_ioctl+0x1ff/0x460 [drm]
>[  267.604260]  ? __wake_up+0x44/0x50
>[  267.604272]  ? drm_mode_getcrtc+0x170/0x170 [drm]
>[  267.604276]  ? __vfs_write+0x37/0x160
>[  267.604279]  do_vfs_ioctl+0xa1/0x5d0
>[  267.604281]  ? vfs_write+0x15a/0x1b0
>[  267.604283]  SyS_ioctl+0x79/0x90
>[  267.604286]  entry_SYSCALL_64_fastpath+0x1e/0xad
>[  267.604288] RIP: 0033:0x7f68a20128b7
>[  267.604289] RSP: 002b:00007ffc1c5b4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>[  267.604292] RAX: ffffffffffffffda RBX: 0000000000025b1e RCX: 00007f68a20128b7
>[  267.604292] RDX: 00007ffc1c5b41c0 RSI: 00000000c06864a2 RDI: 0000000000000004
>[  267.604293] RBP: 0000000000025d78 R08: 0000000000000000 R09: 0000000000c33de8
>[  267.604294] R10: 0000000000c33df0 R11: 0000000000000246 R12: 0000000000caf660
>[  267.604295] R13: 0000000000caf768 R14: 0000000000c7f410 R15: 00000000fffffffd
>[  267.604297] ---[ end trace e0ca556a67a9a16b ]---
>[  267.604338] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  267.604365] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  267.604397] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  267.604433] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  267.604486] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  267.604521] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  267.604546] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  267.604574] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  267.604597] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  267.604622] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  267.604644] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  267.604672] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  267.604696] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  267.604720] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  267.604767] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 1, on? 0) for crtc 36
>[  267.604791] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  267.604913] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  267.604941] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  267.605110] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  267.605150] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  267.622432] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  267.622469] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  267.622498] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 32 bytes ELD
>[  267.622529] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 28320 not found, falling back to defaults
>[  267.622554] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  267.622577] [drm:hsw_audio_config_update [i915]] using automatic N
>[  267.622615] [drm:intel_fbc_enable [i915]] reserved 2304000 bytes of contiguous stolen space for FBC, threshold: 1
>[  267.622639] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  267.637102] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  267.637141] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  267.637207] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  272.637675] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 79200 kHz, actual 79200 kHz
>[  272.637810] [drm:hsw_audio_codec_disable [i915]] Disable audio codec on pipe A
>[  272.637896] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  272.657434] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  272.657536] [drm:intel_disable_pipe [i915]] disabling pipe A
>[  272.763057] ------------[ cut here ]------------
>[  272.763157] WARNING: CPU: 1 PID: 257 at drivers/gpu/drm/i915/intel_display.c:1025 intel_disable_pipe+0x165/0x2c0 [i915]
>[  272.763158] pipe_off wait timed out
>[  272.763159] Modules linked in: ip6table_filter ip6_tables iptable_filter spi_pxa2xx_platform 8250_dw i2c_designware_platform i2c_designware_core binfmt_misc x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_soc_skl aesni_intel aes_x86_64 crypto_simd glue_helper cryptd snd_soc_skl_ipc snd_soc_sst_ipc serio_raw snd_soc_sst_dsp snd_hda_ext_core snd_soc_rt286 snd_soc_sst_match snd_soc_rl6347a snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_core snd_seq_midi snd_compress snd_hda_codec_generic snd_seq_midi_event ac97_bus snd_pcm_dmaengine input_leds snd_rawmidi idma64 snd_hda_intel virt_dma intel_lpss_pci intel_lpss snd_hda_codec shpchp snd_hda_core snd_hwdep snd_seq snd_pcm snd_seq_device snd_timer snd soundcore
>[  272.763205]  spidev rfkill_gpio mac_hid soc_button_array tpm_crb intel_pmc_ipc int3400_thermal acpi_thermal_rel int3403_thermal int340x_thermal_zone parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect sysimgblt fb_sys_fops sdhci drm r8169 ahci mii libahci i2c_hid hid video
>[  272.763234] CPU: 1 PID: 257 Comm: kworker/1:2 Tainted: G     U  W       4.11.0-rc4-drm-tip-ww14-commit-dabd992+ #1
>[  272.763235] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0036.B51.1702240903 02/24/2017
>[  272.763255] Workqueue: events drm_mode_rmfb_work_fn [drm]
>[  272.763257] Call Trace:
>[  272.763266]  dump_stack+0x63/0x90
>[  272.763271]  __warn+0xcb/0xf0
>[  272.763273]  warn_slowpath_fmt+0x5f/0x80
>[  272.763300]  intel_disable_pipe+0x165/0x2c0 [i915]
>[  272.763326]  haswell_crtc_disable+0x81/0x170 [i915]
>[  272.763351]  intel_atomic_commit_tail+0x14c/0x1080 [i915]
>[  272.763357]  ? __queue_work+0x149/0x480
>[  272.763382]  intel_atomic_commit+0x3e8/0x4f0 [i915]
>[  272.763396]  drm_atomic_commit+0x4b/0x50 [drm]
>[  272.763409]  drm_atomic_remove_fb+0x248/0x280 [drm]
>[  272.763422]  drm_framebuffer_remove+0x50/0x150 [drm]
>[  272.763434]  drm_mode_rmfb_work_fn+0x41/0x50 [drm]
>[  272.763438]  process_one_work+0x16b/0x480
>[  272.763440]  worker_thread+0x4b/0x500
>[  272.763443]  kthread+0x101/0x140
>[  272.763444]  ? process_one_work+0x480/0x480
>[  272.763446]  ? kthread_create_on_node+0x60/0x60
>[  272.763450]  ret_from_fork+0x2c/0x40
>[  272.763452] ---[ end trace e0ca556a67a9a16c ]---
>[  272.763490] [drm:intel_power_well_disable [i915]] disabling DDI C IO power well
>[  272.763518] [drm:skl_set_power_well [i915]] Disabling DDI C IO power well
>[  272.763551] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
>[  272.763587] [drm:intel_disable_shared_dpll [i915]] disable PORT PLL C (active 1, on? 1) for crtc 36
>[  272.763640] [drm:intel_disable_shared_dpll [i915]] disabling PORT PLL C
>[  272.763682] [drm:intel_set_cdclk [i915]] Changing CDCLK to 79200 kHz, VCO 633600 kHz, ref 19200 kHz
>[  272.768102] [drm:intel_update_cdclk [i915]] Current CD clock rate: 79200 kHz, VCO: 633600 kHz, ref: 19200 kHz
>[  272.768136] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  272.768162] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  272.768191] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  272.768214] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  272.768239] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  272.768263] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  272.768297] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  272.768325] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  272.768350] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  272.768374] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  272.768417] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  272.768765] [drm:intel_atomic_check [i915]] [CONNECTOR:60:eDP-1] checking for sink bpp constrains
>[  272.768792] [drm:intel_atomic_check [i915]] clamping display bpp (was 36) to EDID reported max of 24
>[  272.768825] [drm:intel_dp_compute_config [i915]] DP link computation with max lane count 2 max bw 270000 pixel clock 141000KHz
>[  272.768857] [drm:intel_dp_compute_config [i915]] DP link bw 0a rate select 00 lane count 2 clock 270000 bpp 24
>[  272.768882] [drm:intel_dp_compute_config [i915]] DP link bw required 423000 available 540000
>[  272.768909] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 24, dithering: 0
>[  272.768937] [drm:intel_dump_pipe_config [i915]] [CRTC:36:pipe A][modeset]
>[  272.768967] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: EDP, pipe bpp: 24, dithering: 0
>[  272.768992] [drm:intel_dump_pipe_config [i915]] dp m_n: lanes: 2; gmch_m: 102673, gmch_n: 131072, link_m: 34224, link_n: 65536, tu: 64
>[  272.769015] [drm:intel_dump_pipe_config [i915]] audio: 0, infoframes: 0
>[  272.769038] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  272.769061] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1920x1080" 60 141000 1920 1936 1952 2104 1080 1083 1097 1116 0x48 0xa
>[  272.769085] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  272.769099] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"1920x1080" 60 141000 1920 1936 1952 2104 1080 1083 1097 1116 0x48 0xa
>[  272.769123] [drm:intel_dump_pipe_config [i915]] crtc timings: 141000 1920 1936 1952 2104 1080 1083 1097 1116, type: 0x48 flags: 0xa
>[  272.769147] [drm:intel_dump_pipe_config [i915]] port clock: 270000, pipe src size: 1920x1080, pixel rate 141000
>[  272.769173] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  272.769196] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  272.769219] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  272.769249] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x6a00, ebb4: 0x2000,pll0: 0x1f, pll1: 0x100, pll2: 0x370a3d, pll3: 0x10000, pll6: 0x30904, pll8: 0x8, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x44
>[  272.769272] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  272.769301] [drm:intel_dump_pipe_config [i915]] [PLANE:26:plane 1A] disabled, scaler_id = -1
>[  272.769323] [drm:intel_dump_pipe_config [i915]] [PLANE:28:plane 2A] disabled, scaler_id = -1
>[  272.769346] [drm:intel_dump_pipe_config [i915]] [PLANE:30:plane 3A] disabled, scaler_id = -1
>[  272.769369] [drm:intel_dump_pipe_config [i915]] [PLANE:32:plane 4A] disabled, scaler_id = -1
>[  272.769392] [drm:intel_dump_pipe_config [i915]] [PLANE:34:cursor A] disabled, scaler_id = -1
>[  272.769417] [drm:intel_atomic_check [i915]] [CONNECTOR:75:HDMI-A-2] checking for sink bpp constrains
>[  272.769454] [drm:intel_hdmi_compute_config [i915]] picking bpc to 8 for HDMI output
>[  272.769477] [drm:intel_hdmi_compute_config [i915]] forcing pipe bpc to 24 for HDMI
>[  272.769501] [drm:intel_atomic_check [i915]] hw max bpp: 36, pipe bpp: 24, dithering: 0
>[  272.769525] [drm:intel_dump_pipe_config [i915]] [CRTC:47:pipe B][modeset]
>[  272.769548] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: B, pipe bpp: 24, dithering: 0
>[  272.769570] [drm:intel_dump_pipe_config [i915]] audio: 1, infoframes: 1
>[  272.769593] [drm:intel_dump_pipe_config [i915]] requested mode:
>[  272.769609] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"3840x2160" 60 533250 3840 3888 3920 4000 2160 2163 2168 2222 0x48 0x9
>[  272.769631] [drm:intel_dump_pipe_config [i915]] adjusted mode:
>[  272.769646] [drm:drm_mode_debug_printmodeline [drm]] Modeline 0:"3840x2160" 60 533250 3840 3888 3920 4000 2160 2163 2168 2222 0x48 0x9
>[  272.769670] [drm:intel_dump_pipe_config [i915]] crtc timings: 533250 3840 3888 3920 4000 2160 2163 2168 2222, type: 0x48 flags: 0x9
>[  272.769693] [drm:intel_dump_pipe_config [i915]] port clock: 533250, pipe src size: 3840x2160, pixel rate 533250
>[  272.769717] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
>[  272.769739] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  272.769762] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
>[  272.769789] [drm:bxt_dump_hw_state [i915]] dpll_hw_state: ebb0: 0x4100, ebb4: 0x2000,pll0: 0x1a, pll1: 0x100, pll2: 0x2a6666, pll3: 0x10000, pll6: 0x30b05, pll8: 0x9, pll9: 0xa, pll10: 0x8003c00, pcsdw12: 0x58
>[  272.769812] [drm:intel_dump_pipe_config [i915]] planes on this crtc
>[  272.769838] [drm:intel_dump_pipe_config [i915]] [PLANE:37:plane 1B] FB:105, fb = 3840x2160 format = XR24 little-endian (0x34325258)
>[  272.769861] [drm:intel_dump_pipe_config [i915]] 	scaler:-1 src 0x0+0+0 dst 0x0+0+0
>[  272.769884] [drm:intel_dump_pipe_config [i915]] [PLANE:39:plane 2B] disabled, scaler_id = -1
>[  272.769907] [drm:intel_dump_pipe_config [i915]] [PLANE:41:plane 3B] disabled, scaler_id = -1
>[  272.769929] [drm:intel_dump_pipe_config [i915]] [PLANE:43:plane 4B] disabled, scaler_id = -1
>[  272.769952] [drm:intel_dump_pipe_config [i915]] [PLANE:45:cursor B] disabled, scaler_id = -1
>[  272.769979] [drm:intel_atomic_check [i915]] New cdclk calculated to be logical 316800 kHz, actual 316800 kHz
>[  272.770013] [drm:bxt_get_dpll [i915]] [CRTC:36:pipe A] using pre-allocated PORT PLL A
>[  272.770040] [drm:intel_reference_shared_dpll [i915]] using PORT PLL A for pipe A
>[  272.770071] [drm:bxt_get_dpll [i915]] [CRTC:47:pipe B] using pre-allocated PORT PLL C
>[  272.770094] [drm:intel_reference_shared_dpll [i915]] using PORT PLL C for pipe B
>[  272.770152] [drm:intel_set_cdclk [i915]] Changing CDCLK to 316800 kHz, VCO 633600 kHz, ref 19200 kHz
>[  272.774241] [drm:intel_update_cdclk [i915]] Current CD clock rate: 316800 kHz, VCO: 633600 kHz, ref: 19200 kHz
>[  272.774269] [drm:intel_atomic_commit_tail [i915]] [ENCODER:59:DDI A]
>[  272.774294] [drm:intel_atomic_commit_tail [i915]] [ENCODER:67:DDI B]
>[  272.774317] [drm:intel_atomic_commit_tail [i915]] [ENCODER:69:DP-MST A]
>[  272.774340] [drm:intel_atomic_commit_tail [i915]] [ENCODER:70:DP-MST B]
>[  272.774363] [drm:intel_atomic_commit_tail [i915]] [ENCODER:71:DP-MST C]
>[  272.774386] [drm:intel_atomic_commit_tail [i915]] [ENCODER:74:DDI C]
>[  272.774410] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  272.774434] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL B
>[  272.774458] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  272.774505] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL A (active 1, on? 0) for crtc 36
>[  272.774529] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL A
>[  272.774662] [drm:edp_panel_on [i915]] Turn eDP port A panel power on
>[  272.774687] [drm:wait_panel_power_cycle [i915]] Wait for panel power cycle
>[  272.774718] [drm:wait_panel_status [i915]] mask b800000f value 00000000 status 00000000 control 00000060
>[  272.774742] [drm:wait_panel_status [i915]] Wait complete
>[  272.774765] [drm:edp_panel_on [i915]] Wait for panel power on
>[  272.774790] [drm:wait_panel_status [i915]] mask b000000f value 80000008 status 9000000a control 00000063
>[  272.878071] [drm:intel_get_hpd_pins [i915]] hotplug event received, stat 0x00000008, dig 0x1a001818, pins 0x00000010
>[  272.878152] [drm:intel_hpd_irq_handler [i915]] digital hpd port A - long
>[  272.878227] [drm:intel_hpd_irq_handler [i915]] Received HPD interrupt on PIN 4 - cnt: 0
>[  272.878346] [drm:intel_dp_hpd_pulse [i915]] ignoring long hpd on eDP port A
>[  272.976596] [drm:wait_panel_status [i915]] Wait complete
>[  272.976682] [drm:intel_power_well_enable [i915]] enabling DDI A IO power well
>[  272.976756] [drm:skl_set_power_well [i915]] Enabling DDI A IO power well
>[  272.976839] [drm:edp_panel_vdd_on [i915]] Turning eDP port A VDD on
>[  272.976912] [drm:edp_panel_vdd_on [i915]] PP_STATUS: 0x80000008 PP_CONTROL: 0x0000006b
>[  272.978087] [drm:intel_dp_set_signal_levels [i915]] Using vswing level 0
>[  272.978152] [drm:intel_dp_set_signal_levels [i915]] Using pre-emphasis level 0
>[  272.978255] [drm:intel_dp_program_link_training_pattern [i915]] Using DP training pattern TPS1
>[  272.978918] [drm:intel_dp_start_link_train [i915]] clock recovery OK
>[  272.978984] [drm:intel_dp_program_link_training_pattern [i915]] Using DP training pattern TPS2
>[  272.979944] [drm:intel_dp_start_link_train [i915]] Channel EQ done. DP Training successful
>[  272.980360] [drm:intel_enable_pipe [i915]] enabling pipe A
>[  272.980440] [drm:intel_edp_backlight_on.part.24 [i915]] 
>[  272.980508] [drm:intel_panel_enable_backlight [i915]] pipe A
>[  272.980581] [drm:intel_panel_actually_set_backlight [i915]] set backlight PWM = 67764
>[  272.986335] [drm:intel_psr_enable [i915]] PSR not supported on this platform
>[  272.986413] [drm:intel_edp_drrs_enable [i915]] Panel doesn't support DRRS
>[  272.986499] [drm:intel_fbc_enable [i915]] reserved 33177600 bytes of contiguous stolen space for FBC, threshold: 1
>[  272.986568] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
>[  272.986703] [drm:intel_enable_shared_dpll [i915]] enable PORT PLL C (active 2, on? 0) for crtc 47
>[  272.986772] [drm:intel_enable_shared_dpll [i915]] enabling PORT PLL C
>[  272.986960] [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
>[  272.987031] [drm:skl_set_power_well [i915]] Enabling DDI C IO power well
>[  272.987341] [drm:intel_enable_pipe [i915]] enabling pipe B
>[  272.987424] [drm:intel_hdmi_handle_sink_scrambling [i915]] Setting sink scrambling for enc:DDI C connector:HDMI-A-2
>[  273.006882] [drm:intel_hdmi_handle_sink_scrambling [i915]] sink scrambling handled
>[  273.006973] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:75:HDMI-A-2], [ENCODER:74:DDI C]
>[  273.007049] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe B, 32 bytes ELD
>[  273.007125] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] HDMI audio pixel clock setting for 533250 not found, falling back to defaults
>[  273.007195] [drm:audio_config_hdmi_pixel_clock.isra.5 [i915]] Configuring HDMI audio for pixel clock 25200 (0x00010000)
>[  273.007260] [drm:hsw_audio_config_update [i915]] using automatic N
>[  273.014025] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:60:eDP-1]
>[  273.014115] [drm:intel_atomic_commit_tail [i915]] [CRTC:36:pipe A]
>[  273.014311] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL A
>[  273.014434] [drm:verify_connector_state.isra.80 [i915]] [CONNECTOR:75:HDMI-A-2]
>[  273.014509] [drm:intel_atomic_commit_tail [i915]] [CRTC:47:pipe B]
>[  273.014616] [drm:verify_single_dpll_state.isra.110 [i915]] PORT PLL C
>[  275.682467] [drm:edp_panel_vdd_off_sync [i915]] Turning eDP port A VDD off
>[  275.682551] [drm:edp_panel_vdd_off_sync [i915]] PP_STATUS: 0x80000008 PP_CONTROL: 0x00000067
>[  313.524603] usb 1-5: USB disconnect, device number 7
>[  315.054392] usb 1-5: new low-speed USB device number 8 using xhci_hcd
>[  315.198622] usb 1-5: New USB device found, idVendor=03f0, idProduct=094a
>[  315.198629] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
>[  315.198634] usb 1-5: Product: HP USB Optical Mouse
>[  315.198638] usb 1-5: Manufacturer: PixArt
>[  315.201404] input: PixArt HP USB Optical Mouse as /devices/pci0000:00/0000:00:15.0/usb1/1-5/1-5:1.0/0003:03F0:094A.0007/input/input13
>[  315.258864] hid-generic 0003:03F0:094A.0007: input,hidraw1: USB HID v1.11 Mouse [PixArt HP USB Optical Mouse] on usb-0000:00:15.0-5/input0
>[  315.259054] sdhci-pci 0000:00:1b.0: SDHCI controller found [8086:31ca] (rev 1)
>[  375.380576] usb 1-5: USB disconnect, device number 8
>[  376.910387] usb 1-5: new low-speed USB device number 9 using xhci_hcd
>[  377.054581] usb 1-5: New USB device found, idVendor=03f0, idProduct=094a
>[  377.054588] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
>[  377.054592] usb 1-5: Product: HP USB Optical Mouse
>[  377.054596] usb 1-5: Manufacturer: PixArt
>[  377.057497] input: PixArt HP USB Optical Mouse as /devices/pci0000:00/0000:00:15.0/usb1/1-5/1-5:1.0/0003:03F0:094A.0008/input/input14
>[  377.114834] hid-generic 0003:03F0:094A.0008: input,hidraw1: USB HID v1.11 Mouse [PixArt HP USB Optical Mouse] on usb-0000:00:15.0-5/input0
>[  377.115011] sdhci-pci 0000:00:1b.0: SDHCI controller found [8086:31ca] (rev 1)

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Attachments on bug 100440: 130518 | 130519 | 130679 | 130948 | 130949 | 130950 | 131099 | 131100 | 131101 | 131297

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