Comment # 50
on bug 101731
from Shmerl
(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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