https://bugs.kde.org/show_bug.cgi?id=419242
Bug ID: 419242
Summary: Support robust recovery from GPU reset in KWin
Product: kwin
Version: unspecified
Platform: unspecified
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: shtetl...@gmail.com
Target Milestone: ---
GPU is a complex processing unit, and some graphics commands can hang it due to
various "hazards" that are normally worked around in the graphics drivers, but
due to some regressions or bugs, they can still be exposed.
When such hangs happen, the kernel driver can detect it and trigger a GPU
reset, to bring it back into usable state.
Currently, when it happens KWin doesn't recover from it, causing a desktop hang
that requires at best restarting sddm or at worst a full reboot. Either way it
equals to losing the desktop session.
Is there some way to make KWin and the whole session robust that it would
handle GPU resets properly, recovering the session on the fly?
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