[Bug 111920] NON-GuC constant i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000, hang on rcs0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111920

--- Comment #5 from Manuel Tiago Pereira <me at mtpereira.com> ---
Hi,

I'm seeing the same error since October if memory serves me right. As per the
`dmesg` log instructions, I've attached my `/sys/class/drm/card0/error` log
file, redacting what seems to be some dump of whatever was in the GPU memory at
the time of the failure.

If I understand correctly the symptoms described the the original poster, I'm
having the exact same behaviour: everything on the graphical interface hangs
for a couple of seconds and `dmesg` outputs these messages:

```
[ 9836.991710] i915 0000:00:02.0: GPU HANG: ecode 9:0:0x00000000, hang on rcs0
[ 9836.991712] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 9836.991713] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 9836.991713] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 9836.991714] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 9836.991715] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 9836.992728] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
```

I'm running Archlinux, default kernel package, on a Dell XPS 13 2012, with a
"Intel Corporation UHD Graphics 620 (rev 07)" (as per `lspci` output). 

I hope that my report somehow helps understanding and fixing the issue!

Best regards,
Manuel Tiago Pereira

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