Comment 0 for bug 1861395

System hangs, unknown cause, When this happens, the mouse pointer still moves, but I can't do anything else with the keys or clicking in the UI. Only recover I have found is a hard power-off

Last bit of kern.log below:

Jan 30 12:43:51 aries kernel: [ 6649.263031] i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000, hang on rcs0
Jan 30 12:43:51 aries kernel: [ 6649.263032] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
Jan 30 12:43:51 aries kernel: [ 6649.263033] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
Jan 30 12:43:51 aries kernel: [ 6649.263033] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
Jan 30 12:43:51 aries kernel: [ 6649.263034] The GPU crash dump is required to analyze GPU hangs, so please always attach it.
Jan 30 12:43:51 aries kernel: [ 6649.263034] GPU crash dump saved to /sys/class/drm/card0/error
Jan 30 12:43:51 aries kernel: [ 6649.264039] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:43:51 aries kernel: [ 6649.264778] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed out: {request: 00000001, RESET_CTL: 00000001}
Jan 30 12:43:51 aries kernel: [ 6649.265046] i915 0000:00:02.0: Resetting chip for hang on rcs0
Jan 30 12:43:51 aries kernel: [ 6649.267018] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed out: {request: 00000001, RESET_CTL: 00000001}
Jan 30 12:43:51 aries kernel: [ 6649.267764] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed out: {request: 00000001, RESET_CTL: 00000001}
Jan 30 12:43:59 aries kernel: [ 6657.262680] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:01 aries kernel: [ 6659.246609] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:09 aries kernel: [ 6667.246324] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:09 aries kernel: [ 6667.494008] show_signal_msg: 20 callbacks suppressed
Jan 30 12:44:09 aries kernel: [ 6667.494011] GpuWatchdog[6827]: segfault at 0 ip 000055fd01917ded sp 00007f63043cc480 error 6 in chrome[55fcfd9dc000+7171000]
Jan 30 12:44:09 aries kernel: [ 6667.494017] Code: 48 c1 c9 03 48 81 f9 af 00 00 00 0f 87 c9 00 00 00 48 8d 15 a9 5a 9c fb f6 04 11 20 0f 84 b8 00 00 00 be 01 00 00 00 ff 50 30 <c7> 04 25 00 00 00 00 37 13 00 00 c6 05 c1 6d a4 03 01 80 7d 8f 00
Jan 30 12:44:23 aries kernel: [ 6681.265885] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:25 aries kernel: [ 6683.245838] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:27 aries kernel: [ 6685.261749] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:29 aries kernel: [ 6687.245641] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:31 aries kernel: [ 6689.261618] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
Jan 30 12:44:51 aries kernel: [ 6709.260901] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-12-generic 5.4.0-12.15
ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
Uname: Linux 5.4.0-12-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Jan 30 12:51:24 2020
InstallationDate: Installed on 2018-06-18 (591 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-5.4
UpgradeStatus: Upgraded to focal on 2020-01-22 (8 days ago)