Did this issue start happening after an update/upgrade?
It started after upgrading to 17.10 artful aardvark.
Was there a prior kernel version where you were not having this particular
problem?
It worked/works with 4.10.0-35 (still in grub boot list)
Would it be possible for you to test the latest upstream kernel?
Installed and booted v4.14-rc5. Issue was got worse. Completely wedged on
what should be lightdm login. Just non blinking cursor in top left of screen,
no
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1723680
Title:
GPU Hang in Xorg rcs0 drm/i915
Status in linux package in Ubuntu:
Confirmed
Bug description:
Distributor ID: Ubuntu
Description: Ubuntu Artful Aardvark (development branch)
Release: 17.10
Codename: artful
When using linux kernel linux-image-4.13.0-12-generic to linux-
image-4.13.0-16-generic Xorg fails to start with kernel error messages
below. Kernel boots and displays messages allows for GUI to enter disk
encryption key then tries to start Xorg login. Shows blank screen,
sometimes part of login dialog. Then hangs and goes blank usually
showing the low graphics mode error screen from Xorg and no
functionality after a while. Can ctrl+alt+f1 to console. Using
linux-image-4.10.0-35-generic everything works as expected. System
worked without issue with Ubuntu 17.04
Kernel error messages:
[ 43.836641] [drm] GPU HANG: ecode 8:0:0x00dfffff, in Xorg [1027], reason:
Hang on rcs0, action: reset
[ 43.836645] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 43.836646] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 43.836647] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 43.836648] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 43.836649] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 43.836718] drm/i915: Resetting chip after gpu hang
[ 55.812149] drm/i915: Resetting chip after gpu hang
[ 63.840645] drm/i915: Resetting chip after gpu hang
[ 71.836614] drm/i915: Resetting chip after gpu hang
[ 79.836882] drm/i915: Resetting chip after gpu hang
[ 88.828508] drm/i915: Resetting chip after gpu hang
have tried kernel parameter intel_iommu=off, intel_iommu=igfx_off,
i915.enable_rc6=0 with no better results.
lshw, dmesg and card0/error file attached.
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