[Bug 101731] System freeze with AMDGPU when playing The Witcher 3 (GOG GOTY)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101731

--- Comment #50 from Shmerl <shtetldik at gmail.com> ---
(In reply to Alex Deucher from comment #49)
> You can force a reset by reading /sys/kernel/debug/dri/0/amdgpu_gpu_reset
> but very few if any applications currently use the GL robustness extensions
> to query if the context is lost and resubmit their state.

For a test, I tried doing

sudo cat /sys/kernel/debug/dri/1/amdgpu_gpu_reset

during normal desktop operation (in this setup it's card 1), and it just messes
up KDE / sddm and even restarting sddm it isn't enough after that (soft reboot
was enough).

Then I tested it after the The Witcher 3 freeze above (remotely, over ssh).
That caused complete hang, that even ssh stopped working. So that required hard
reboot.

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