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[Bug 1643566] Re: [i915_bpo] Intermittent display outage with external monitor

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1643566@xxxxxxxxxxxxxxxxxx>
Date: Sat, 11 Mar 2017 04:17:43 -0000
Reply-to: Bug 1643566 <1643566@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
[Expired for linux (Ubuntu Xenial) because there has been no activity
for 60 days.]

** Changed in: linux (Ubuntu Xenial)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1643566

Title:
  [i915_bpo] Intermittent display outage with external monitor

Status in linux package in Ubuntu:
  Expired
Status in linux source package in Xenial:
  Expired

Bug description:
  Filing on behalf of Claire Newman...

  I seem to be tickling a bug in the i915 stack, when I use a desktop
  monitor. The symptom is that the screen blanks for a few seconds then
  comes back . This happens every few minutes.  I am using a Lenovo
  Thinkpad T460s (new this weekend) but last week I was using a Thinkpad
  W550s - same issue with the blank screen on both laptops.  Happens
  every 20 mins or so and there is no identifiable reproducer (eg. I cam
  just be sitting there doing something else on my phone and the screen
  goes black).

  Here is lspci output for the video card:

  00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 07) (prog-if 00 [VGA controller])
      Subsystem: Lenovo Skylake Integrated Graphics
      Flags: bus master, fast devsel, latency 0, IRQ 123
      Memory at e0000000 (64-bit, non-prefetchable) [size=16M]
      Memory at c0000000 (64-bit, prefetchable) [size=512M]
      I/O ports at e000 [size=64]
      Expansion ROM at <unassigned> [disabled]
      Capabilities: [40] Vendor Specific Information: Len=0c <?>
      Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
      Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
      Capabilities: [d0] Power Management version 2
      Capabilities: [100] #1b
      Capabilities: [200] Address Translation Service (ATS)
      Capabilities: [300] #13
      Kernel driver in use: i915_bpo
      Kernel modules: i915_bpo

  And in dmesg I see the below text:

  [161321.406860] i915_bpo 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
  [161528.013954] ------------[ cut here ]------------
  [161528.013996] WARNING: CPU: 3 PID: 31178 at /build/linux-xHzv4a/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
  [161528.013998] WARN_ON(!wm_changed)
  [161528.014047] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [161528.014074]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [161528.014079] CPU: 3 PID: 31178 Comm: Xorg Not tainted 4.4.0-47-generic #68-Ubuntu
  [161528.014080] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [161528.014085]  0000000000000286 00000000b170f762 ffff88027b36f600 ffffffff813f5aa3
  [161528.014088]  ffff88027b36f648 ffffffffc02a39a0 ffff88027b36f638 ffffffff81081262
  [161528.014091]  ffff880522e26000 ffff88003f96a148 ffff880522e27000 ffff880523193b78
  [161528.014092] Call Trace:
  [161528.014102]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [161528.014108]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [161528.014112]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [161528.014144]  [<ffffffffc01c4fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
  [161528.014175]  [<ffffffffc01c5185>] skl_update_wm+0x185/0x610 [i915_bpo]
  [161528.014224]  [<ffffffffc02563af>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
  [161528.014273]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [161528.014326]  [<ffffffffc0238681>] haswell_crtc_enable+0x761/0x8e0 [i915_bpo]
  [161528.014378]  [<ffffffffc0223cbe>] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo]
  [161528.014395]  [<ffffffffc01786d4>] ? drm_atomic_helper_commit_planes_on_crtc+0x154/0x270 [drm_kms_helper]
  [161528.014449]  [<ffffffffc0234586>] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo]
  [161528.014488]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [161528.014521]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [161528.014538]  [<ffffffffc0179e4f>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper]
  [161528.014571]  [<ffffffffc007779a>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
  [161528.014587]  [<ffffffffc017c023>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
  [161528.014601]  [<ffffffffc017c09d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
  [161528.014615]  [<ffffffffc017bfa2>] drm_fb_helper_hotplug_event+0xd2/0x120 [drm_kms_helper]
  [161528.014628]  [<ffffffffc017c046>] drm_fb_helper_restore_fbdev_mode_unlocked+0x56/0x80 [drm_kms_helper]
  [161528.014640]  [<ffffffffc017c09d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
  [161528.014694]  [<ffffffffc024e5ba>] intel_fbdev_set_par+0x1a/0x60 [i915_bpo]
  [161528.014698]  [<ffffffff81478f86>] fb_set_var+0x236/0x460
  [161528.014704]  [<ffffffff812a0b58>] ? ext4_dirty_inode+0x48/0x70
  [161528.014709]  [<ffffffff812cdec8>] ? __ext4_handle_dirty_metadata+0x48/0x1f0
  [161528.014714]  [<ffffffff8124538b>] ? __getblk_gfp+0x2b/0x60
  [161528.014720]  [<ffffffff8146f27f>] fbcon_blank+0x30f/0x350
  [161528.014727]  [<ffffffff81506633>] do_unblank_screen+0xd3/0x1a0
  [161528.014733]  [<ffffffff814fbc9a>] vt_ioctl+0x50a/0x12f0
  [161528.014739]  [<ffffffff814ef15f>] tty_ioctl+0x35f/0xc40
  [161528.014745]  [<ffffffff81224d38>] ? dput+0xb8/0x220
  [161528.014749]  [<ffffffff8122e514>] ? mntput+0x24/0x40
  [161528.014754]  [<ffffffff8120f960>] ? __fput+0x190/0x220
  [161528.014758]  [<ffffffff8122156f>] do_vfs_ioctl+0x29f/0x490
  [161528.014763]  [<ffffffff8120fa2e>] ? ____fput+0xe/0x10
  [161528.014769]  [<ffffffff8109ee06>] ? task_work_run+0x86/0xa0
  [161528.014772]  [<ffffffff812217d9>] SyS_ioctl+0x79/0x90
  [161528.014778]  [<ffffffff81834ff2>] entry_SYSCALL_64_fastpath+0x16/0x71
  [161528.014781] ---[ end trace 68b4b3ecbd0a020b ]---
  [161528.808324] usb 1-4.1: reset high-speed USB device number 7 using xhci_hcd
  [161536.339941] ------------[ cut here ]------------
  [161536.339974] WARNING: CPU: 3 PID: 32686 at /build/linux-xHzv4a/linux-4.4.0/drivers/gpu/drm/drm_irq.c:1317 drm_wait_one_vblank+0x17b/0x1c0 [drm]()
  [161536.339976] vblank not available on crtc 0, ret=-22
  [161536.340032] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [161536.340062]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [161536.340067] CPU: 3 PID: 32686 Comm: Xorg Tainted: G W       4.4.0-47-generic #68-Ubuntu
  [161536.340069] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [161536.340074]  0000000000000286 00000000e1424e2f ffff880525fef6d0 ffffffff813f5aa3
  [161536.340077]  ffff880525fef718 ffffffffc008fb38 ffff880525fef708 ffffffff81081262
  [161536.340081]  ffff880523193800 0000000000000000 ffff8805225eb800 ffff880523193b68
  [161536.340082] Call Trace:
  [161536.340092]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [161536.340099]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [161536.340104]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [161536.340126]  [<ffffffffc005f054>] ? drm_vblank_get+0x74/0xc0 [drm]
  [161536.340148]  [<ffffffffc005f2ab>] drm_wait_one_vblank+0x17b/0x1c0 [drm]
  [161536.340205]  [<ffffffffc020f190>] ? hsw_write16+0x10/0x10 [i915_bpo]
  [161536.340257]  [<ffffffffc020f190>] ? hsw_write16+0x10/0x10 [i915_bpo]
  [161536.340293]  [<ffffffffc01c54b9>] skl_update_wm+0x4b9/0x610 [i915_bpo]
  [161536.340329]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [161536.340382]  [<ffffffffc0238681>] haswell_crtc_enable+0x761/0x8e0 [i915_bpo]
  [161536.340436]  [<ffffffffc0234586>] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo]
  [161536.340473]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [161536.340510]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [161536.340535]  [<ffffffffc0179e4f>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper]
  [161536.340574]  [<ffffffffc007779a>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
  [161536.340591]  [<ffffffffc017c023>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
  [161536.340605]  [<ffffffffc017c09d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
  [161536.340659]  [<ffffffffc024e5ba>] intel_fbdev_set_par+0x1a/0x60 [i915_bpo]
  [161536.340663]  [<ffffffff8147903f>] ? fb_set_var+0x2ef/0x460
  [161536.340666]  [<ffffffff81478f86>] fb_set_var+0x236/0x460
  [161536.340672]  [<ffffffff8170ca97>] ? sock_poll+0x107/0x120
  [161536.340678]  [<ffffffff81223416>] ? do_sys_poll+0x146/0x560
  [161536.340681]  [<ffffffff810b4f59>] ? update_curr+0x79/0x160
  [161536.340687]  [<ffffffff8146f27f>] fbcon_blank+0x30f/0x350
  [161536.340691]  [<ffffffff810ab329>] ? ttwu_do_wakeup+0x19/0xe0
  [161536.340698]  [<ffffffff81506633>] do_unblank_screen+0xd3/0x1a0
  [161536.340704]  [<ffffffff814fb709>] complete_change_console+0x59/0xe0
  [161536.340709]  [<ffffffff814fbea0>] vt_ioctl+0x710/0x12f0
  [161536.340731]  [<ffffffffc005d789>] ? drm_ioctl+0x189/0x540 [drm]
  [161536.340737]  [<ffffffff814ef15f>] tty_ioctl+0x35f/0xc40
  [161536.340744]  [<ffffffff811c082d>] ? handle_mm_fault+0xcdd/0x1820
  [161536.340748]  [<ffffffff8122156f>] do_vfs_ioctl+0x29f/0x490
  [161536.340752]  [<ffffffff8106b504>] ? __do_page_fault+0x1b4/0x400
  [161536.340755]  [<ffffffff812217d9>] SyS_ioctl+0x79/0x90
  [161536.340761]  [<ffffffff81834ff2>] entry_SYSCALL_64_fastpath+0x16/0x71
  [161536.340793] ---[ end trace 68b4b3ecbd0a020c ]---
  [161536.380101] ------------[ cut here ]------------
  [161536.380122] WARNING: CPU: 3 PID: 32686 at /build/linux-xHzv4a/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
  [161536.380123] WARN_ON(!wm_changed)
  [161536.380145] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [161536.380158]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [161536.380161] CPU: 3 PID: 32686 Comm: Xorg Tainted: G W       4.4.0-47-generic #68-Ubuntu
  [161536.380161] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [161536.380164]  0000000000000286 00000000e1424e2f ffff880525fef650 ffffffff813f5aa3
  [161536.380165]  ffff880525fef698 ffffffffc02a39a0 ffff880525fef688 ffffffff81081262
  [161536.380167]  ffff880522e26000 ffff88003f96a148 ffff880522e27000 ffff880523193b78
  [161536.380167] Call Trace:
  [161536.380172]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [161536.380175]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [161536.380177]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [161536.380195]  [<ffffffffc01c4fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
  [161536.380213]  [<ffffffffc01c5185>] skl_update_wm+0x185/0x610 [i915_bpo]
  [161536.380241]  [<ffffffffc02563af>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
  [161536.380259]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [161536.380286]  [<ffffffffc0238681>] haswell_crtc_enable+0x761/0x8e0 [i915_bpo]
  [161536.380313]  [<ffffffffc0223cbe>] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo]
  [161536.380322]  [<ffffffffc01786d4>] ? drm_atomic_helper_commit_planes_on_crtc+0x154/0x270 [drm_kms_helper]
  [161536.380348]  [<ffffffffc0234586>] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo]
  [161536.380367]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [161536.380384]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [161536.380392]  [<ffffffffc0179e4f>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper]
  [161536.380409]  [<ffffffffc007779a>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
  [161536.380417]  [<ffffffffc017c023>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
  [161536.380424]  [<ffffffffc017c09d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
  [161536.380450]  [<ffffffffc024e5ba>] intel_fbdev_set_par+0x1a/0x60 [i915_bpo]
  [161536.380452]  [<ffffffff8147903f>] ? fb_set_var+0x2ef/0x460
  [161536.380454]  [<ffffffff81478f86>] fb_set_var+0x236/0x460
  [161536.380456]  [<ffffffff8170ca97>] ? sock_poll+0x107/0x120
  [161536.380458]  [<ffffffff81223416>] ? do_sys_poll+0x146/0x560
  [161536.380460]  [<ffffffff810b4f59>] ? update_curr+0x79/0x160
  [161536.380463]  [<ffffffff8146f27f>] fbcon_blank+0x30f/0x350
  [161536.380465]  [<ffffffff810ab329>] ? ttwu_do_wakeup+0x19/0xe0
  [161536.380468]  [<ffffffff81506633>] do_unblank_screen+0xd3/0x1a0
  [161536.380471]  [<ffffffff814fb709>] complete_change_console+0x59/0xe0
  [161536.380473]  [<ffffffff814fbea0>] vt_ioctl+0x710/0x12f0
  [161536.380485]  [<ffffffffc005d789>] ? drm_ioctl+0x189/0x540 [drm]
  [161536.380487]  [<ffffffff814ef15f>] tty_ioctl+0x35f/0xc40
  [161536.380490]  [<ffffffff811c082d>] ? handle_mm_fault+0xcdd/0x1820
  [161536.380492]  [<ffffffff8122156f>] do_vfs_ioctl+0x29f/0x490
  [161536.380494]  [<ffffffff8106b504>] ? __do_page_fault+0x1b4/0x400
  [161536.380496]  [<ffffffff812217d9>] SyS_ioctl+0x79/0x90
  [161536.380498]  [<ffffffff81834ff2>] entry_SYSCALL_64_fastpath+0x16/0x71
  [161536.380511] ---[ end trace 68b4b3ecbd0a020d ]---
  [162373.603247] ------------[ cut here ]------------
  [162373.603313] WARNING: CPU: 2 PID: 386 at /build/linux-xHzv4a/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
  [162373.603315] WARN_ON(!wm_changed)
  [162373.603387] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [162373.603438]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [162373.603443] CPU: 2 PID: 386 Comm: kworker/2:1 Tainted: G W       4.4.0-47-generic #68-Ubuntu
  [162373.603446] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [162373.603455] Workqueue: events console_callback
  [162373.603462]  0000000000000286 0000000057921fda ffff8805258b38a0 ffffffff813f5aa3
  [162373.603467]  ffff8805258b38e8 ffffffffc02a39a0 ffff8805258b38d8 ffffffff81081262
  [162373.603472]  ffff880522e27000 ffff88003f96a148 ffff880522e26000 ffff880523193b78
  [162373.603473] Call Trace:
  [162373.603484]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [162373.603492]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [162373.603497]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [162373.603554]  [<ffffffffc01c4fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
  [162373.603610]  [<ffffffffc01c5185>] skl_update_wm+0x185/0x610 [i915_bpo]
  [162373.603665]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [162373.603739]  [<ffffffffc02343f8>] intel_atomic_commit+0x448/0x14a0 [i915_bpo]
  [162373.603789]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [162373.603834]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [162373.603856]  [<ffffffffc017750d>] drm_atomic_helper_connector_dpms+0xed/0x1a0 [drm_kms_helper]
  [162373.603878]  [<ffffffffc017afd7>] drm_fb_helper_dpms.isra.8+0x97/0xe0 [drm_kms_helper]
  [162373.603897]  [<ffffffffc017b05d>] drm_fb_helper_blank+0x3d/0x90 [drm_kms_helper]
  [162373.603971]  [<ffffffffc024e55a>] intel_fbdev_blank+0x1a/0x60 [i915_bpo]
  [162373.603976]  [<ffffffff81478c76>] fb_blank+0x66/0xc0
  [162373.603982]  [<ffffffff8146f202>] fbcon_blank+0x292/0x350
  [162373.603988]  [<ffffffff810b9635>] ? put_prev_entity+0x35/0x7d0
  [162373.603996]  [<ffffffff810ec984>] ? lock_timer_base.isra.22+0x54/0x70
  [162373.604002]  [<ffffffff810eca8e>] ? try_to_del_timer_sync+0x5e/0x90
  [162373.604008]  [<ffffffff815068e0>] do_blank_screen+0x1c0/0x260
  [162373.604013]  [<ffffffff815076f7>] console_callback+0x77/0x180
  [162373.604018]  [<ffffffff81830866>] ? __schedule+0x3b6/0xa30
  [162373.604025]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
  [162373.604030]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
  [162373.604036]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [162373.604041]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [162373.604046]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
  [162373.604051]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [162373.604056]  [<ffffffff8183538f>] ret_from_fork+0x3f/0x70
  [162373.604061]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [162373.604064] ---[ end trace 68b4b3ecbd0a020e ]---
  [227004.455208] ------------[ cut here ]------------
  [227004.455227] WARNING: CPU: 2 PID: 3435 at /build/linux-xHzv4a/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
  [227004.455228] WARN_ON(!wm_changed)
  [227004.455252] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [227004.455265]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [227004.455267] CPU: 2 PID: 3435 Comm: kworker/2:1 Tainted: G W       4.4.0-47-generic #68-Ubuntu
  [227004.455267] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [227004.455271] Workqueue: events console_callback
  [227004.455273]  0000000000000286 00000000b13cc7b9 ffff880523d27818 ffffffff813f5aa3
  [227004.455274]  ffff880523d27860 ffffffffc02a39a0 ffff880523d27850 ffffffff81081262
  [227004.455275]  ffff880522e26000 ffff88003f96a148 ffff880522e27000 ffff880523193b78
  [227004.455275] Call Trace:
  [227004.455279]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [227004.455282]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [227004.455284]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [227004.455296]  [<ffffffffc01c4fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
  [227004.455308]  [<ffffffffc01c5185>] skl_update_wm+0x185/0x610 [i915_bpo]
  [227004.455326]  [<ffffffffc02563af>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
  [227004.455338]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [227004.455356]  [<ffffffffc0238681>] haswell_crtc_enable+0x761/0x8e0 [i915_bpo]
  [227004.455374]  [<ffffffffc0234586>] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo]
  [227004.455388]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [227004.455400]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [227004.455406]  [<ffffffffc017750d>] drm_atomic_helper_connector_dpms+0xed/0x1a0 [drm_kms_helper]
  [227004.455412]  [<ffffffffc017afd7>] drm_fb_helper_dpms.isra.8+0x97/0xe0 [drm_kms_helper]
  [227004.455417]  [<ffffffffc017b070>] drm_fb_helper_blank+0x50/0x90 [drm_kms_helper]
  [227004.455434]  [<ffffffffc024e55a>] intel_fbdev_blank+0x1a/0x60 [i915_bpo]
  [227004.455436]  [<ffffffff81478c76>] fb_blank+0x66/0xc0
  [227004.455438]  [<ffffffff8146f07e>] fbcon_blank+0x10e/0x350
  [227004.455440]  [<ffffffff810b700b>] ? dequeue_entity+0x41b/0xa80
  [227004.455442]  [<ffffffff810ec984>] ? lock_timer_base.isra.22+0x54/0x70
  [227004.455444]  [<ffffffff810ecb81>] ? internal_add_timer+0x71/0x80
  [227004.455445]  [<ffffffff810ee86f>] ? mod_timer+0x10f/0x240
  [227004.455447]  [<ffffffff81506633>] do_unblank_screen+0xd3/0x1a0
  [227004.455448]  [<ffffffff8150767c>] poke_blanked_console+0xbc/0xc0
  [227004.455450]  [<ffffffff815077d4>] console_callback+0x154/0x180
  [227004.455452]  [<ffffffff81830866>] ? __schedule+0x3b6/0xa30
  [227004.455454]  [<ffffffff8173918e>] ? rtnl_unlock+0xe/0x10
  [227004.455456]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
  [227004.455458]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
  [227004.455459]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [227004.455461]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [227004.455462]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
  [227004.455463]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [227004.455465]  [<ffffffff8183538f>] ret_from_fork+0x3f/0x70
  [227004.455466]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [227004.455467] ---[ end trace 68b4b3ecbd0a020f ]---
  [227624.548049] ------------[ cut here ]------------
  [227624.548104] WARNING: CPU: 2 PID: 3435 at /build/linux-xHzv4a/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
  [227624.548107] WARN_ON(!wm_changed)
  [227624.548162] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [227624.548206]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [227624.548212] CPU: 2 PID: 3435 Comm: kworker/2:1 Tainted: G W       4.4.0-47-generic #68-Ubuntu
  [227624.548214] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [227624.548224] Workqueue: events console_callback
  [227624.548229]  0000000000000286 00000000b13cc7b9 ffff880523d278a0 ffffffff813f5aa3
  [227624.548233]  ffff880523d278e8 ffffffffc02a39a0 ffff880523d278d8 ffffffff81081262
  [227624.548236]  ffff880522e27000 ffff88003f96a148 ffff880522e26000 ffff880523193b78
  [227624.548237] Call Trace:
  [227624.548247]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [227624.548254]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [227624.548259]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [227624.548301]  [<ffffffffc01c4fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
  [227624.548341]  [<ffffffffc01c5185>] skl_update_wm+0x185/0x610 [i915_bpo]
  [227624.548379]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [227624.548437]  [<ffffffffc02343f8>] intel_atomic_commit+0x448/0x14a0 [i915_bpo]
  [227624.548488]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [227624.548523]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [227624.548541]  [<ffffffffc017750d>] drm_atomic_helper_connector_dpms+0xed/0x1a0 [drm_kms_helper]
  [227624.548558]  [<ffffffffc017afd7>] drm_fb_helper_dpms.isra.8+0x97/0xe0 [drm_kms_helper]
  [227624.548573]  [<ffffffffc017b05d>] drm_fb_helper_blank+0x3d/0x90 [drm_kms_helper]
  [227624.548633]  [<ffffffffc024e55a>] intel_fbdev_blank+0x1a/0x60 [i915_bpo]
  [227624.548637]  [<ffffffff81478c76>] fb_blank+0x66/0xc0
  [227624.548643]  [<ffffffff8146f202>] fbcon_blank+0x292/0x350
  [227624.548650]  [<ffffffff811ad179>] ? next_zone+0x29/0x30
  [227624.548656]  [<ffffffff811ae0b3>] ? refresh_cpu_vm_stats+0x103/0x1d0
  [227624.548663]  [<ffffffff810ec984>] ? lock_timer_base.isra.22+0x54/0x70
  [227624.548668]  [<ffffffff810eca8e>] ? try_to_del_timer_sync+0x5e/0x90
  [227624.548674]  [<ffffffff815068e0>] do_blank_screen+0x1c0/0x260
  [227624.548678]  [<ffffffff815076f7>] console_callback+0x77/0x180
  [227624.548682]  [<ffffffff81830866>] ? __schedule+0x3b6/0xa30
  [227624.548688]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
  [227624.548693]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
  [227624.548697]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [227624.548701]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [227624.548708]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
  [227624.548711]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [227624.548716]  [<ffffffff8183538f>] ret_from_fork+0x3f/0x70
  [227624.548719]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [227624.548722] ---[ end trace 68b4b3ecbd0a0210 ]---
  [227808.485608] ------------[ cut here ]------------
  [227808.485634] WARNING: CPU: 2 PID: 3435 at /build/linux-xHzv4a/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
  [227808.485635] WARN_ON(!wm_changed)
  [227808.485667] Modules linked in: hid_logitech_hidpp hid_generic hid_logitech_dj usbhid hid snd_usb_audio snd_usbmidi_lib cpuid drbg ansi_cprng ctr ccm rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media btusb btrtl btbcm btintel bluetooth arc4 joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 kvm snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core irqbypass crct10dif_pclmul crc32_pclmul aesni_intel snd_compress ac97_bus aes_x86_64 snd_pcm_dmaengine dw_dmac_core iwlmvm lrw snd_hda_intel gf128mul glue_helper snd_hda_codec ablk_helper mac80211 cryptd snd_hda_core snd_hwdep snd_pcm input_leds serio_raw iwlwifi rtsx_pci_ms
  [227808.485684]  cfg80211 memstick snd_seq_midi thinkpad_acpi snd_seq_midi_event snd_rawmidi nvram mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore tpm_crb mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper psmouse e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core drm nvme rtsx_pci wmi video fjes
  [227808.485686] CPU: 2 PID: 3435 Comm: kworker/2:1 Tainted: G W       4.4.0-47-generic #68-Ubuntu
  [227808.485687] Hardware name: LENOVO 20F9CTO1WW/20F9CTO1WW, BIOS N1CET47W (1.15 ) 08/08/2016
  [227808.485692] Workqueue: events console_callback
  [227808.485695]  0000000000000286 00000000b13cc7b9 ffff880523d27818 ffffffff813f5aa3
  [227808.485697]  ffff880523d27860 ffffffffc02a39a0 ffff880523d27850 ffffffff81081262
  [227808.485698]  ffff880522e26000 ffff88003f96a148 ffff880522e27000 ffff880523193b78
  [227808.485699] Call Trace:
  [227808.485705]  [<ffffffff813f5aa3>] dump_stack+0x63/0x90
  [227808.485709]  [<ffffffff81081262>] warn_slowpath_common+0x82/0xc0
  [227808.485711]  [<ffffffff810812fc>] warn_slowpath_fmt+0x5c/0x80
  [227808.485729]  [<ffffffffc01c4fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
  [227808.485747]  [<ffffffffc01c5185>] skl_update_wm+0x185/0x610 [i915_bpo]
  [227808.485774]  [<ffffffffc02563af>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
  [227808.485805]  [<ffffffffc01c8f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
  [227808.485826]  [<ffffffffc0238681>] haswell_crtc_enable+0x761/0x8e0 [i915_bpo]
  [227808.485848]  [<ffffffffc0234586>] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo]
  [227808.485865]  [<ffffffffc0078bde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
  [227808.485879]  [<ffffffffc0079017>] drm_atomic_commit+0x37/0x60 [drm]
  [227808.485886]  [<ffffffffc017750d>] drm_atomic_helper_connector_dpms+0xed/0x1a0 [drm_kms_helper]
  [227808.485893]  [<ffffffffc017afd7>] drm_fb_helper_dpms.isra.8+0x97/0xe0 [drm_kms_helper]
  [227808.485899]  [<ffffffffc017b070>] drm_fb_helper_blank+0x50/0x90 [drm_kms_helper]
  [227808.485919]  [<ffffffffc024e55a>] intel_fbdev_blank+0x1a/0x60 [i915_bpo]
  [227808.485921]  [<ffffffff81478c76>] fb_blank+0x66/0xc0
  [227808.485924]  [<ffffffff8146f07e>] fbcon_blank+0x10e/0x350
  [227808.485926]  [<ffffffff810b700b>] ? dequeue_entity+0x41b/0xa80
  [227808.485928]  [<ffffffff8140a805>] ? find_next_bit+0x15/0x20
  [227808.485931]  [<ffffffff811ad126>] ? next_online_pgdat+0x26/0x50
  [227808.485934]  [<ffffffff810ec984>] ? lock_timer_base.isra.22+0x54/0x70
  [227808.485936]  [<ffffffff810ecb81>] ? internal_add_timer+0x71/0x80
  [227808.485937]  [<ffffffff810ee86f>] ? mod_timer+0x10f/0x240
  [227808.485939]  [<ffffffff81506633>] do_unblank_screen+0xd3/0x1a0
  [227808.485941]  [<ffffffff8150767c>] poke_blanked_console+0xbc/0xc0
  [227808.485943]  [<ffffffff815077d4>] console_callback+0x154/0x180
  [227808.485945]  [<ffffffff81830866>] ? __schedule+0x3b6/0xa30
  [227808.485948]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
  [227808.485949]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
  [227808.485951]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [227808.485953]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
  [227808.485954]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
  [227808.485956]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [227808.485958]  [<ffffffff8183538f>] ret_from_fork+0x3f/0x70
  [227808.485959]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
  [227808.485970] ---[ end trace 68b4b3ecbd0a0211 ]---

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