https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7417/shard-skl7/igt@kms_plane@pixel-format-pipe-a-planes-source-clamping.html
<6> [985.708707] Console: switching to colour dummy device 80x25
<6> [985.709083] [IGT] kms_plane: executing
<7> [985.800634] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:102:DP-1]
<7> [985.800988] [drm:intel_dp_detect [i915]] [CONNECTOR:102:DP-1]
<7> [985.801299] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:102:DP-1] disconnected
<7> [985.804446] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:110:HDMI-A-1]
<7> [985.804798] [drm:intel_hdmi_detect [i915]] [CONNECTOR:110:HDMI-A-1]
<7> [985.856681] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
<7> [985.864624] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [985.865071] [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [985.865431] [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpb. force bit now 1
<7> [985.873075] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [985.873434] [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpb. force bit now 0
<7> [985.924685] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
<7> [985.932729] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
<7> [985.932771] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:110:HDMI-A-1] disconnected
<7> [985.935589] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:116:DP-2]
<7> [985.935985] [drm:intel_dp_detect [i915]] [CONNECTOR:116:DP-2]
<7> [985.936104] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:116:DP-2] disconnected
<7> [985.938693] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:122:HDMI-A-2]
<7> [985.939028] [drm:intel_hdmi_detect [i915]] [CONNECTOR:122:HDMI-A-2]
<7> [985.991669] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
<7> [985.999625] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [985.999956] [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [986.000279] [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpc. force bit now 1
<7> [986.008012] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [986.008466] [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpc. force bit now 0
<7> [986.059745] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
<7> [986.070668] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
<7> [986.070732] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:122:HDMI-A-2] disconnected
<7> [986.074802] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:95:eDP-1]
<7> [986.075281] [drm:intel_dp_detect [i915]] [CONNECTOR:95:eDP-1]
<7> [986.075773] [drm:intel_dp_print_rates [i915]] source rates: 162000, 216000, 270000, 324000, 432000, 540000
<7> [986.076144] [drm:intel_dp_print_rates [i915]] sink rates: 162000, 270000
<7> [986.076625] [drm:intel_dp_print_rates [i915]] common rates: 162000, 270000
<7> [986.079583] [drm:intel_dp_detect [i915]] [ENCODER:94:DDI A] MST support: port: no, sink: no, modparam: yes
<7> [986.080991] [drm:drm_add_display_info] non_desktop set to 0
<7> [986.081105] [drm:drm_add_edid_modes] ELD: no CEA Extension found
<7> [986.081293] [drm:drm_add_display_info] non_desktop set to 0
<7> [986.081510] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:95:eDP-1] probed modes :
<7> [986.081547] [drm:drm_mode_debug_printmodeline] Modeline "2400x1600": 60 252750 2400 2448 2480 2560 1600 1603 1613 1646 0x48 0xa
<7> [986.081718] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:102:DP-1]
<7> [986.082164] [drm:intel_dp_detect [i915]] [CONNECTOR:102:DP-1]
<7> [986.082462] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:102:DP-1] disconnected
<7> [986.082630] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:110:HDMI-A-1]
<7> [986.083075] [drm:intel_hdmi_detect [i915]] [CONNECTOR:110:HDMI-A-1]
<7> [986.134737] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
<7> [986.142974] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [986.143379] [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [986.144001] [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpb. force bit now 1
<7> [986.152642] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [986.153094] [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpb. force bit now 0
<7> [986.204811] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
<7> [986.218801] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
<7> [986.218868] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:110:HDMI-A-1] disconnected
<7> [986.219087] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:116:DP-2]
<7> [986.220082] [drm:intel_dp_detect [i915]] [CONNECTOR:116:DP-2]
<7> [986.222797] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:116:DP-2] disconnected
<7> [986.222988] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:122:HDMI-A-2]
<7> [986.223437] [drm:intel_hdmi_detect [i915]] [CONNECTOR:122:HDMI-A-2]
<7> [986.275700] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
<7> [986.285978] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [986.286316] [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [986.286829] [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpc. force bit now 1
<7> [986.298100] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [986.298585] [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpc. force bit now 0
<7> [986.350738] [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
<7> [986.360408] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
<7> [986.360450] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:122:HDMI-A-2] disconnected
<6> [986.360951] [IGT] kms_plane: starting subtest pixel-format-pipe-A-planes-source-clamping
<7> [986.363033] [drm:drm_mode_addfb2] [FB:127]
<7> [986.500648] [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<7> [986.517871] [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<7> [986.519516] [drm:intel_atomic_check [i915]] [CONNECTOR:95:eDP-1] Limiting display bpp to 24 instead of EDID bpp 24, requested bpp 36, max platform bpp 36
<7> [986.520143] [drm:intel_dp_compute_config [i915]] DP link computation with max lane count 4 max rate 270000 max bpp 24 pixel clock 252750KHz
<7> [986.520717] [drm:intel_dp_compute_config [i915]] Force DSC en = 0
<7> [986.521169] [drm:intel_dp_compute_config [i915]] DP lane count 4 clock 270000 bpp 24
<7> [986.521685] [drm:intel_dp_compute_config [i915]] DP link rate required 758250 available 1080000
<7> [986.522321] [drm:intel_atomic_check [i915]] hw max bpp: 24, pipe bpp: 24, dithering: 0
<7> [986.522991] [drm:intel_dump_pipe_config [i915]] [CRTC:51:pipe A] enable: yes [fastset]
<7> [986.523437] [drm:intel_dump_pipe_config [i915]] active: yes, output_types: EDP (0x100), output format: RGB
<7> [986.524187] [drm:intel_dump_pipe_config [i915]] cpu_transcoder: EDP, pipe bpp: 24, dithering: 0
<7> [986.524784] [drm:intel_dump_pipe_config [i915]] dp m_n: lanes: 4; gmch_m: 5889501, gmch_n: 8388608, link_m: 490791, link_n: 524288, tu: 64
<7> [986.525224] [drm:intel_dump_pipe_config [i915]] audio: 0, infoframes: 0, infoframes enabled: 0x0
<7> [986.525737] [drm:intel_dump_pipe_config [i915]] requested mode:
<7> [986.525782] [drm:drm_mode_debug_printmodeline] Modeline "2400x1600": 60 252750 2400 2448 2480 2560 1600 1603 1613 1646 0x48 0xa
<7> [986.526213] [drm:intel_dump_pipe_config [i915]] adjusted mode:
<7> [986.526374] [drm:drm_mode_debug_printmodeline] Modeline "2400x1600": 60 252750 2400 2448 2480 2560 1600 1603 1613 1646 0x48 0xa
<7> [986.526813] [drm:intel_dump_pipe_config [i915]] crtc timings: 252750 2400 2448 2480 2560 1600 1603 1613 1646, type: 0x48 flags: 0xa
<7> [986.527242] [drm:intel_dump_pipe_config [i915]] port clock: 270000, pipe src size: 2400x1600, pixel rate 252750
<7> [986.527891] [drm:intel_dump_pipe_config [i915]] num_scalers: 2, scaler_users: 0x0, scaler_id: -1
<7> [986.528331] [drm:intel_dump_pipe_config [i915]] pch pfit: pos: 0x00000000, size: 0x00000000, disabled, force thru: no
<7> [986.528904] [drm:intel_dump_pipe_config [i915]] ips: 0, double wide: 0
<7> [986.529336] [drm:intel_dump_pipe_config [i915]] dpll_hw_state: ctrl1: 0x3, cfgcr1: 0x0, cfgcr2: 0x0
<7> [986.529901] [drm:intel_dump_pipe_config [i915]] csc_mode: 0x2 gamma_mode: 0x0 gamma_enable: 1 csc_enable: 0
<7> [986.530299] [drm:intel_dump_pipe_config [i915]] [PLANE:31:plane 1A] fb: [FB:127] 2400x1600 format = XR24 little-endian (0x34325258), visible: yes
<7> [986.530777] [drm:intel_dump_pipe_config [i915]] 	rotation: 0x1, scaler: -1
<7> [986.531222] [drm:intel_dump_pipe_config [i915]] 	src: 2400.000000x1600.000000+0.000000+0.000000 dst: 2400x1600+0+0
<7> [986.532286] [drm:intel_ddi_update_pipe [i915]] Panel doesn't support DRRS
<7> [986.552083] [drm:verify_connector_state [i915]] [CONNECTOR:95:eDP-1]
<7> [986.552770] [drm:intel_atomic_commit_tail [i915]] [CRTC:51:pipe A]
<7> [986.554717] [drm:verify_single_dpll_state.isra.153 [i915]] DPLL 0
<7> [986.599616] [drm:drm_mode_addfb2] [FB:129]
<7> [986.600867] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A]   level *wm0,*wm1,*wm2,*wm3,*wm4,*wm5,*wm6,*wm7, twm -> *wm0,*wm1,*wm2,*wm3,*wm4,*wm5,*wm6,*wm7, twm
<7> [986.601201] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A]   lines    0,   2,   3,   4,   7,   8,   9,  10,   0 ->    0,   2,   3,   4,   7,   8,   9,  10,   0
<7> [986.601659] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A]  blocks    5,  40,  58,  66, 127, 155, 166, 198,   0 ->    5,   6,   8,  10,  16,  18,  20,  22,   0
<7> [986.601986] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] min_ddb    6,  41,  59,  67, 128, 156, 167, 199,   0 ->    6,   7,   9,  11,  17,  19,  21,  23,   0
<7> [986.604772] [drm:drm_mode_addfb2] [FB:129]
<7> [986.609814] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A]   level *wm0,*wm1,*wm2,*wm3,*wm4,*wm5,*wm6,*wm7, twm -> *wm0,*wm1,*wm2,*wm3,*wm4,*wm5,*wm6,*wm7, twm
<7> [986.610729] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A]   lines    0,   2,   3,   4,   7,   8,   9,  10,   0 ->    0,   2,   3,   4,   7,   8,   9,  10,   0
<7> [986.611052] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A]  blocks    5,  40,  58,  66, 127, 155, 166, 198,   0 ->    5,   6,   8,  10,  16,  18,  20,  22,   0
<7> [986.611369] [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] min_ddb    6,  41,  59,  67, 128, 156, 167, 199,   0 ->    6,   7,   9,  11,  17,  19,  21,  23,   0
<7> [986.632813] [drm:drm_mode_addfb2] [FB:130]
<7> [986.666482] [drm:drm_mode_addfb2] [FB:129]
<7> [986.699751] [drm:drm_mode_addfb2] [FB:130]
<7> [986.733555] [drm:drm_mode_addfb2] [FB:129]