Bug 443187 - [systemd] KWin sometimes does not exit on logout properly on wayland
Summary: [systemd] KWin sometimes does not exit on logout properly on wayland
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: 5.22.90
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
: 443814 (view as bug list)
Depends on:
Blocks:
 
Reported: 2021-10-01 07:16 UTC by Samuel Reddy
Modified: 2021-10-17 22:17 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
KWin doesn't crash (858 bytes, text/plain)
2021-10-04 21:44 UTC, Samuel Reddy 		Details
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Description Samuel Reddy 2021-10-01 07:16:00 UTC 
SUMMARY:
KWin will sometimes not exit when logging out when using systemd startup, you have to hit ctrl+alt+delete in order to exit out of kwin, but when you log back in, it takes a long time to start and there is only a black screen with a cursor.

STEPS TO REPRODUCE
1. Logout of Plasma a few times
2. On one of the logouts, kwin does not exit

OBSERVED RESULT:
KWin does not logout properly, because I can still launch krunner
And when logging back in, plasmashell doesn't start properly

EXPECTED RESULT:
Plasma logs out properly and logs back in properly

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.22.90
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
Kernel Version: 5.14.8-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 5 3450U with Radeon Vega Mobile Gfx
Memory: 5.7 GiB of RAM
Graphics Processor: AMD Radeon™ Vega 8 Graphics

ADDITIONAL INFORMATION:
none
Comment 1 Vlad Zahorodnii 2021-10-04 12:12:57 UTC 
Can you check whether kwin crashes? That can be done by attaching a debugger to kwin or checking coredumps.
Comment 2 Samuel Reddy 2021-10-04 21:44:47 UTC 
Created attachment 142155 [details]
KWin doesn't crash

I ran 'echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
sudo gdb -pid $(pidof kwin_wayland) -batch -ex "set logging file kwin_wayland.gdb" -ex "set logging on" -ex "continue" -ex "thread apply all backtrace" -ex "quit"' and logged out of Plasma and got the bug, but there was no backtrace in the file. So KWin is not crashing.
Comment 3 Vlad Zahorodnii 2021-10-05 06:15:56 UTC 
Hmm, this might be a ksmserver issue.
Comment 4 Samuel Reddy 2021-10-16 08:18:07 UTC 
This bug seems to be fixed in plasma 5.23.
Comment 5 Nate Graham 2021-10-17 22:17:54 UTC 
*** Bug 443814 has been marked as a duplicate of this bug. ***