Version: 3.16.7-ckt25-2+deb8u2 Dear Maintainer, Sometimes, when I resume from suspend, I get these 2 errors in my logs: June 16 14:35:07 myhost kernel: Suspending console(s) (use no_console_suspend to debug) -> June 16 14:35:07 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register befor -> June 16 14:35:07 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c7204 June 16 14:35:07 myhost kernel: Restarting tasks ... done. Soon after that, my screen turns on/off intermittently, especially if I use software in full screen (Firefox, LibreOffice, URXVT etc.) When it turns off, I usually get some (2-4) of these warnings: June 08 19:17:53 myhost kernel: ------------[ cut here ]------------ June 08 19:17:53 myhost kernel: WARNING: CPU: 0 PID: 24210 at /build/linux-lqALYs/linux-3.16.7-ckt25/drivers/gpu/drm/i915/intel_display.c:7254 hsw_enable_pc8+0x463/0x5e0 [i915]() June 08 19:17:53 myhost kernel: CRTC for pipe A enabled June 08 19:17:53 myhost kernel: Modules linked in: cdc_mbim cdc_wdm qcserial cdc_ncm usb_wwan usbnet usbserial mii tun ctr ccm pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media dell_wmi sparse_keymap nvram msr nls_utf8 nls_cp437 vfat fat joydev snd_hda_codec_realtek snd_hda_codec_generic ppdev dell_laptop dcdbas x86_pkg_temp_thermal intel_powerclamp intel_rapl coretemp kvm_intel kvm crc32_pclmul crc32c_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd arc4 psmouse evdev serio_raw efi_pstore iwldvm efivars mac80211 radeon sr_mod cdrom iwlwifi cfg80211 sdhci_pci ttm sg lpc_ich rfkill mfd_core i2c_i801 wmi parport_pc parport snd_soc_rt5640 i915 snd_soc_rl6231 June 08 19:17:53 myhost kernel: dell_smo8800 snd_soc_core i2c_hid snd_compress regmap_i2c hid snd_soc_sst_acpi sdhci_acpi video sdhci snd_hda_intel e1000e mmc_core snd_hda_controller i2c_designware_platform drm_kms_helper snd_hda_codec battery i2c_designware_core ac drm ehci_pci snd_hwdep i2c_algo_bit xhci_hcd button ie31200_edac ehci_hcd i2c_core snd_pcm edac_core ptp usbcore pps_core shpchp snd_timer processor snd mei_me usb_common soundcore mei fuse autofs4 ext4 crc16 mbcache jbd2 sd_mod crc_t10dif crct10dif_generic ahci crct10dif_pclmul libahci crct10dif_common libata scsi_mod thermal thermal_sys June 08 19:17:53 myhost kernel: CPU: 0 PID: 24210 Comm: kworker/0:1 Tainted: G W O 3.16.0-4-amd64 #1 Debian 3.16.7-ckt25-2 June 08 19:17:53 myhost kernel: Hardware name: Dell Inc. Latitude E6440/XXXXXX, BIOS A14 12/01/2015 June 08 19:17:53 myhost kernel: Workqueue: pm pm_runtime_work June 08 19:17:53 myhost kernel: 0000000000000000 ffffffff8150e835 ffff880206923ca8 0000000000000009 June 08 19:17:53 myhost kernel: ffffffff810677f7 ffff880225790000 ffff880206923cf8 ffff880221e74370 June 08 19:17:53 myhost kernel: ffff880225472098 0000000000000000 ffffffff8106785c ffffffffa051fcf0 June 08 19:17:53 myhost kernel: Call Trace: June 08 19:17:53 myhost kernel: [<ffffffff8150e835>] ? dump_stack+0x5d/0x78 June 08 19:17:53 myhost kernel: [<ffffffff810677f7>] ? warn_slowpath_common+0x77/0x90 June 08 19:17:53 myhost kernel: [<ffffffff8106785c>] ? warn_slowpath_fmt+0x4c/0x50 June 08 19:17:53 myhost kernel: [<ffffffffa04b7e5e>] ? lpt_disable_clkout_dp+0x7e/0xc0 [i915] June 08 19:17:53 myhost kernel: [<ffffffffa04c8803>] ? hsw_enable_pc8+0x463/0x5e0 [i915] June 08 19:17:53 myhost kernel: [<ffffffffa0474755>] ? intel_runtime_suspend+0x185/0x880 [i915] June 08 19:17:53 myhost kernel: [<ffffffff812e4a49>] ? pci_pm_runtime_suspend+0x59/0x120 June 08 19:17:53 myhost kernel: [<ffffffff813acd1c>] ? __rpm_callback+0x2c/0x80 June 08 19:17:53 myhost kernel: [<ffffffff813acd8f>] ? rpm_callback+0x1f/0x80 June 08 19:17:53 myhost kernel: [<ffffffff813acef7>] ? rpm_suspend+0x107/0x5f0 June 08 19:17:53 myhost kernel: [<ffffffff813ae392>] ? pm_runtime_work+0x72/0xa0 June 08 19:17:53 myhost kernel: [<ffffffff810817c2>] ? process_one_work+0x172/0x420 June 08 19:17:53 myhost kernel: [<ffffffff81081e53>] ? worker_thread+0x113/0x4f0 June 08 19:17:53 myhost kernel: [<ffffffff81510d61>] ? __schedule+0x2b1/0x700 June 08 19:17:53 myhost kernel: [<ffffffff81081d40>] ? rescuer_thread+0x2d0/0x2d0 June 08 19:17:53 myhost kernel: [<ffffffff8108809d>] ? kthread+0xbd/0xe0 June 08 19:17:53 myhost kernel: [<ffffffff81087fe0>] ? kthread_create_on_node+0x180/0x180 June 08 19:17:53 myhost kernel: [<ffffffff81514958>] ? ret_from_fork+0x58/0x90 June 08 19:17:53 myhost kernel: [<ffffffff81087fe0>] ? kthread_create_on_node+0x180/0x180 June 08 19:17:53 myhost kernel: ---[ end trace c45f761a6be7b480 ]--- And thousands of these errors: June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a06c June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a06c June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a070 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a070 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a074 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a074 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a078 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a078 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a07c June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a07c June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a080 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a080 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a084 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a084 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4a088 June 08 19:17:58 myhost kernel: [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4a088 This does not seem to occur on kernels 4.xx and up. I am using Debian GNU/Linux 8.5 on a Dell Latitude E6440: Intel 4310m Haswell CPU; Intel 4600 iGPU Found something similar: https://forums.linuxmint.com/viewtopic.php?t=218748 (BSD) http://mail-index.netbsd.org/netbsd-bugs/2016/01/04/msg044019.html http://askubuntu.com/questions/721707/screen-turns-off-randomly-then-turns-on-again-only-when-i-scroll -- Package-specific info: ** Version: Linux version 3.16.0-4-amd64 (debian-kernel@lists.debian.org) (gcc version 4.8.4 (Debian 4.8.4-1) ) #1 SMP Debian 3.16.7-ckt25-2+deb8u2 (2016-06-25) ** Tainted: WO (4608) * Taint on warning. * Out-of-tree module has been loaded. ** Kernel log: [65803.352046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.365038] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.365040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.365042] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.365044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.378776] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.378779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.378781] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.378783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.391823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.391826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.391828] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.391830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.403589] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.403592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.403594] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.403596] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.416882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.416885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.416887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.416889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.430155] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.430158] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.430160] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.430162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.442648] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.442650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.442652] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.442654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.455349] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.455352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.455354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.455356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.468420] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.468423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.468425] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.468427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.481102] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.481105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.481107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.481109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.495240] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.495243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.495245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.495247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.506803] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.506806] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.506808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.506810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.519713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.519716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.519718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.519720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.533217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.533220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.533222] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.533224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.545928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.545930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.545933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.545935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.558640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.558642] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.558644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.558646] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.571796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.571799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.571802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.571804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.584289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.584291] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.584293] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.584295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.597000] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.597003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.597005] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.597007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.610021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.610024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.610026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.610028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.623807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.623810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.623812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.623814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.636527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.636530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.636533] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.636535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.648689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.648692] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.648694] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.648696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65803.661718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70088 [65803.661722] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70088 [65803.661724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 70084 [65803.661726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 70084 [65806.033984] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off ** Model information sys_vendor: Dell Inc. product_name: Latitude E6440 product_version: 00 chassis_vendor: Dell Inc. chassis_version: bios_vendor: Dell Inc. bios_version: A14 ** Loaded modules: nfnetlink_queue nfnetlink_log nfnetlink bluetooth 6lowpan_iphc isofs usb_storage ctr ccm pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) snd_hda_codec_hdmi uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media hid_generic cdc_mbim qcserial cdc_wdm cdc_ncm usb_wwan usbnet usbserial usbhid mii joydev nvram msr dell_wmi sparse_keymap iTCO_wdt iTCO_vendor_support i915 ppdev dell_laptop dcdbas x86_pkg_temp_thermal intel_powerclamp intel_rapl coretemp kvm_intel kvm crc32_pclmul crc32c_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd efi_pstore psmouse evdev serio_raw efivars snd_hda_codec_realtek snd_hda_codec_generic nls_utf8 nls_cp437 sr_mod vfat cdrom fat sg lpc_ich mfd_core i2c_i801 arc4 iwldvm mac80211 sdhci_pci radeon iwlwifi cfg80211 ttm rfkill wmi parport_pc parport dell_smo8800 snd_soc_rt5640 sdhci_acpi snd_soc_rl6231 snd_soc_core sdhci i2c_hid e1000e snd_compress snd_hda_intel regmap_i2c mmc_core snd_hda_controller hid video snd_hda_codec snd_soc_sst_acpi i2c_designware_platform snd_hwdep drm_kms_helper i2c_designware_core snd_pcm ie31200_edac drm snd_timer button ehci_pci ac snd battery i2c_algo_bit xhci_hcd soundcore i2c_core ptp ehci_hcd mei_me pps_core usbcore mei edac_core shpchp usb_common processor fuse autofs4 ext4 crc16 mbcache jbd2 sd_mod crc_t10dif crct10dif_generic ahci crct10dif_pclmul crct10dif_common libahci libata scsi_mod thermal thermal_sys ** PCI devices: 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller [8086:0c01] (rev 06) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000e000-0000efff Memory behind bridge: f7e00000-f7efffff Prefetchable memory behind bridge: 00000000e0000000-00000000efffffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:05bd] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 50 Region 0: Memory at f6400000 (64-bit, non-prefetchable) [size=4M] Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at f000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 00:03.0 Audio device [0403]: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller [8086:0c0c] (rev 06) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 44 Region 0: Memory at f7f34000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel 00:14.0 USB controller [0c03]: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI [8086:8c31] (rev 04) (prog-if 30 [XHCI]) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 45 Region 0: Memory at f7f20000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: xhci_hcd 00:16.0 Communication controller [0780]: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 [8086:8c3a] (rev 04) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 47 Region 0: Memory at f7f40000 (64-bit, non-prefetchable) [size=16] Capabilities: <access denied> Kernel driver in use: mei_me 00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I217-LM [8086:153a] (rev 04) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 51 Region 0: Memory at f7f00000 (32-bit, non-prefetchable) [disabled] [size=128K] Region 1: Memory at f7f3d000 (32-bit, non-prefetchable) [disabled] [size=4K] Region 2: I/O ports at f080 [disabled] [size=32] Capabilities: <access denied> Kernel driver in use: e1000e 00:1a.0 USB controller [0c03]: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 [8086:8c2d] (rev 04) (prog-if 20 [EHCI]) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 16 Region 0: Memory at f7f3c000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci-pci 00:1b.0 Audio device [0403]: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller [8086:8c20] (rev 04) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 48 Region 0: Memory at f7f30000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel 00:1c.0 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 [8086:8c10] (rev d4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: cf200000-cf3fffff Prefetchable memory behind bridge: 00000000cf400000-00000000cf5fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.2 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 [8086:8c14] (rev d4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 Memory behind bridge: f7d00000-f7dfffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.4 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 [8086:8c18] (rev d4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: f7200000-f7bfffff Prefetchable memory behind bridge: 00000000f0a00000-00000000f13fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.5 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #6 [8086:8c1a] (rev d4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=05, subordinate=05, sec-latency=0 I/O behind bridge: 0000c000-0000cfff Memory behind bridge: f6800000-f71fffff Prefetchable memory behind bridge: 00000000f0000000-00000000f09fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.7 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #8 [8086:8c1e] (rev d4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=06, subordinate=06, sec-latency=0 Memory behind bridge: f7c00000-f7cfffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1d.0 USB controller [0c03]: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 [8086:8c26] (rev 04) (prog-if 20 [EHCI]) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 21 Region 0: Memory at f7f3b000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci-pci 00:1f.0 ISA bridge [0601]: Intel Corporation QM87 Express LPC Controller [8086:8c4f] (rev 04) Subsystem: Dell Device [1028:05bd] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Capabilities: <access denied> Kernel driver in use: lpc_ich 00:1f.2 SATA controller [0106]: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] [8086:8c03] (rev 04) (prog-if 01 [AHCI 1.0]) Subsystem: Dell Device [1028:05bd] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin B routed to IRQ 43 Region 0: I/O ports at f0d0 [size=8] Region 1: I/O ports at f0c0 [size=4] Region 2: I/O ports at f0b0 [size=8] Region 3: I/O ports at f0a0 [size=4] Region 4: I/O ports at f060 [size=32] Region 5: Memory at f7f3a000 (32-bit, non-prefetchable) [size=2K] Capabilities: <access denied> Kernel driver in use: ahci 00:1f.3 SMBus [0c05]: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller [8086:8c22] (rev 04) Subsystem: Dell Device [1028:05bd] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin C routed to IRQ 18 Region 0: Memory at f7f39000 (64-bit, non-prefetchable) [size=256] Region 4: I/O ports at f040 [size=32] 01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M] [1002:6660] (rev ff) (prog-if ff) !!! Unknown header type 7f Kernel driver in use: radeon 03:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6235 [8086:088e] (rev 24) Subsystem: Intel Corporation Centrino Advanced-N 6235 AGN [8086:4460] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 46 Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlwifi 06:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8520] (rev 01) (prog-if 01) Subsystem: Dell Device [1028:05bd] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 19 Region 0: Memory at f7c01000 (32-bit, non-prefetchable) [size=4K] Region 1: Memory at f7c00000 (32-bit, non-prefetchable) [size=2K] Capabilities: <access denied> Kernel driver in use: sdhci-pci ** USB devices: Bus 004 Device 002: ID 8087:8000 Intel Corp. Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 003: ID 0c45:64d0 Microdia Bus 003 Device 002: ID 8087:8008 Intel Corp. Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 015: ID 413c:81a3 Dell Computer Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub -- System Information: Debian Release: 8.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages linux-image-3.16.0-4-amd64 depends on: ii debconf [debconf-2.0] 1.5.56 ii initramfs-tools [linux-initramfs-tool] 0.120+deb8u2 ii kmod 18-3 ii linux-base 3.5 Versions of packages linux-image-3.16.0-4-amd64 recommends: pn firmware-linux-free <none> pn irqbalance <none> Versions of packages linux-image-3.16.0-4-amd64 suggests: pn debian-kernel-handbook <none> pn grub-pc | grub-efi | extlinux <none> pn linux-doc-3.16 <none> Versions of packages linux-image-3.16.0-4-amd64 is related to: pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> ii firmware-iwlwifi 20160110-1~bpo8+1 pn firmware-libertas <none> pn firmware-linux <none> pn firmware-linux-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-ralink <none> pn firmware-realtek <none> pn xen-hypervisor <none> -- debconf information: linux-image-3.16.0-4-amd64/postinst/mips-initrd-3.16.0-4-amd64: linux-image-3.16.0-4-amd64/prerm/removing-running-kernel-3.16.0-4-amd64: true linux-image-3.16.0-4-amd64/postinst/depmod-error-initrd-3.16.0-4-amd64: false
plea
look like you have already the latest BIOS. So please, attached full dmesg with drm.debug=14 in boot command line where you are reproducing this issue.
Created attachment 124929 [details] New logs with drm.debug=14 Took me about 5 suspend/resume actions to replicate it this time. Before doing the 5'th suspend, I waited for DPMS to turn off my display, and then pressed some keys to get my screen back to normal, then I suspended the system. So, I think it might be related to DPMS somehow. Like I said; upon resume, the screen blanking only happens in FULL-SCREEN software, and it only seems to go away if I return the windows to their normal size, using some key combo, or if I use my Dell's pointing stick. Kernel: Linux myhost 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt25-2+deb8u3 (2016-07-02) x86_64 GNU/Linux
Any news on this one guys?
Could you try the drm-intel-nightly branch from git://anongit.freedesktop.org/drm-intel ?
kolp23@yopmail.com - We seem to have neglected the bug quite a bit, apologies. Do you see this problem with the latest kernel (preferable drm-tip branch from git://anongit.freedesktop.org/drm-tip) ? Mark this as REOPENED if you can reproduce (and attach kernel log) and RESOLVED if you cannot reproduce.
based on the lack of activity in recent times this bug will be closed but if the issue is again visible with latest configuration open a new bug
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