https://bugs.kde.org/show_bug.cgi?id=445679
Bug ID: 445679
Summary: graphics hangs after screen unlock
Product: kwin
Version: 5.23.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: dennis.lis...@gmail.com
Target Milestone: ---
SUMMARY
Sometimes, after locking screen and leaving Plasma Wayland running overnight,
the screen hangs completely after unlocking the session (not even mouse
moving). Switching to a different VC only works after Alt+SysRq+r.
Checking from a different VC showed Xwayland consuming 100% CPU with a perf
recording like this:
- 99.95% 0.00% Xwayland Xwayland [.] xwl_present_msc_bump
- xwl_present_msc_bump
67.11% present_wnmd_event_notify
- 32.82% present_vblank_destroy
- 32.81% present_fence_destroy
SyncDeleteTriggerFromSyncObject
I'm not exactly sure whether this is a Kwin bug or an Xwayland one, so
reporting it here. If any additional information is needed, I can try to
reproduce it and extract the required information.
SOFTWARE/OS VERSIONS
Gentoo ~amd64 (rolling release)
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2
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