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** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1925429
Title:
Flickering of the graphical environment (i915 [drm] GPU HANG)
Status in linux package in Ubuntu:
Confirmed
Bug description:
Ubuntu 20.10
uname -r: 5.8.0-50-generic
Machine: Lenovo T440s
1) The graphical environment starts flickering, drawing the windows
and their content scrambled, flashing, etc. Over the time the
graphical environment disintegrates completely (scrambled windows,
horizontal lines and solid squares all over the screen, impossible to
use any controls or even to understand where they are), rendering any
further work impossible (the only remedy is to reboot the system). At
the onset of those symptoms dmesg or the like do not contain anything
informative; however, usually the graphical environment also at some
point freezes for a moment. When this happens, the dmesg gets appended
with lines informing about a gpu hang:
[28620.924309] i915 0000:00:02.0: [drm] GPU HANG: ecode 7:1:dfdef4fe, in
Renderer [104270]
[28620.924474] i915 0000:00:02.0: [drm] Resetting chip for stopped heartbeat
on rcs0
[28621.027257] i915 0000:00:02.0: [drm] Renderer[104270] context reset due to
GPU hang
[28654.972181] i915 0000:00:02.0: [drm] GPU HANG: ecode 7:1:00200000, in
Renderer [104270]
[28654.973039] i915 0000:00:02.0: [drm] Resetting chip for stopped heartbeat
on rcs0
[28655.075025] i915 0000:00:02.0: [drm] Renderer[104270] context reset due to
GPU hang
This is the probably the only possibly relevant info I could find in the
logs.
2) Reproducing: no specific steps are known. I noticed that using
Firefox usually speeds up the onset of the problems, but the bug
presents itself also when using other programs (e.g., Wolfram
Mathematica).
3) The bug started to manifest itself since updating to the kernel
5.8.0-49 via apt upgrade. Most tellingly, booting with 5.8.0-48 leads
to stable, working system without any of the described problems.
4) The only recent relevant report I could find seems to be this one:
https://gitlab.freedesktop.org/drm/intel/-/issues/2986
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: linux-image-5.8.0-50-generic 5.8.0-50.56
ProcVersionSignature: Ubuntu 5.8.0-50.56-generic 5.8.18
Uname: Linux 5.8.0-50-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c',
'/dev/snd/pcmC1D0p', '/dev/snd/controlC0', '/dev/snd/hwC0D0',
'/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p',
'/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer']
failed with exit code 1:
CasperMD5CheckResult: skip
Date: Thu Apr 22 09:31:48 2021
InstallationDate: Installed on 2015-03-18 (2226 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: LENOVO 20ARS45900
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-50-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash elevator=noop vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.8.0-50-generic N/A
linux-backports-modules-5.8.0-50-generic N/A
linux-firmware 1.190.3
SourcePackage: linux
UpgradeStatus: Upgraded to groovy on 2020-10-23 (180 days ago)
dmi.bios.date: 01/09/2015
dmi.bios.release: 2.32
dmi.bios.vendor: LENOVO
dmi.bios.version: GJET82WW (2.32 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20ARS45900
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50512 STD
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.ec.firmware.release: 1.9
dmi.modalias:
dmi:bvnLENOVO:bvrGJET82WW(2.32):bd01/09/2015:br2.32:efr1.9:svnLENOVO:pn20ARS45900:pvrThinkPadT440s:rvnLENOVO:rn20ARS45900:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad T440s
dmi.product.name: 20ARS45900
dmi.product.sku: LENOVO_MT_20AR_BU_Think_FM_ThinkPad T440s
dmi.product.version: ThinkPad T440s
dmi.sys.vendor: LENOVO
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