https://bugs.kde.org/show_bug.cgi?id=527720
Bug ID: 527720
Summary: plasmashell hangs on shutdown (stop-sigterm timeout)
with QObject::disconnect: Unexpected nullptr parameter
Classification: Plasma
Product: plasmashell
Version First 6.8.1
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 197590
--> https://bugs.kde.org/attachment.cgi?id=197590&action=edit
Full plasmashell log: QML addItem error, QObject::disconnect, stop-sigterm
timeout.
SUMMARY
-------
plasmashell hangs on shutdown and does not respond to SIGTERM. After a timeout
of ~40 seconds, systemd kills it with SIGKILL. The issue is intermittent and
occurs regardless of session uptime (from 1 minute to 5+ hours). It happens in
a Wayland session with Plasma 6.8.1.
STEPS TO REPRODUCE
------------------
1. Use a Plasma 6.8.1 Wayland session.
2. Shut down or reboot the system (either from the menu or via `systemctl
poweroff`).
3. Observe that plasmashell does not terminate cleanly.
4. After ~40 seconds, systemd kills plasmashell with SIGKILL.
EXPECTED BEHAVIOR
-----------------
plasmashell should terminate cleanly on shutdown/reboot and the system should
power off/reboot in a few seconds.
OBSERVED BEHAVIOR
-----------------
plasmashell hangs and does not respond to SIGTERM. The following errors appear
in the logs just before the hang:
QGridLayoutEngine::addItem: Can't add Body_QMLTYPE_419(0x...) ...
QObject::disconnect: Unexpected nullptr parameter
Then systemd reports:
plasma-plasmashell.service: State 'stop-sigterm' timed out. Killing.
plasma-plasmashell.service: Killing process 767 (plasmashell) with signal
SIGKILL
plasma-plasmashell.service: Failed with result 'timeout'.
SYSTEM INFORMATION
------------------
- Distribution: EndeavourOS (Arch Linux)
- Kernel: 7.2.11-arch1-1
- Plasma version: 6.8.1
- Qt version: 6.12.0 (or whatever `pacman -Q qt6-base` reports)
- Session type: Wayland
- KWin version: 6.8.1-2 (updated, bug persists)
ADDITIONAL INFORMATION
----------------------
- The panel configuration has been reset to default (file
~/.config/plasma-org.kde.plasma.desktop-appletsrc removed) and the issue
persists.
- KWin has been updated to 6.8.1-2, but the issue persists.
- The issue is intermittent: it can happen after 1 minute or after 5+ hours of
uptime.
- The error QGridLayoutEngine::addItem appears a few seconds before the
shutdown request, suggesting some panel applet or QML component is leaving
plasmashell in an inconsistent state.
- I have not isolated a specific applet, but the system tray and its child
applets are the main suspects.
- Attached logs:
* journalctl -b -1 --user-unit plasma-plasmashell.service (full plasmashell
log from the failed shutdown)
* journalctl -b -1 --since "23:50:25" --until "23:51:15" (the exact window of
the hang)
***
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Please remove this comment after reading and before submitting - thanks!
***
DESCRIPTION
STEPS TO REPRODUCE
1.
2.
3.
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Operating System (available in the Info Center app, or by running `kinfo` in a
terminal window):
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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