https://bugs.kde.org/show_bug.cgi?id=526620
Bug ID: 526620
Summary: org.kde.KSplash.service occasionally fails
Classification: Plasma
Product: plasmashell
Version First master
Reported In:
Platform: KDE Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Splash Screens
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
DESCRIPTION
Immediately after the splash screen disappears, `/usr/bin/plasma_waitforname
org.kde.KSplash` is still running.
And after a while, it fails, and system journal contains:
plasma_waitforname[2149]: WaitForName: Service was not registered within
timeout
systemd[1071]: dbus-:[email protected]: Main process exited,
code=exited, status=1/FAILURE
systemd[1071]: dbus-:[email protected]: Failed with result
'exit-code'.
This doesn't happen with auto login. But can occasionally reproduce by logout
then login again.
Earlier logs have:
systemd[1071]: Created slice Slice /app/dbus-:1.2-org.kde.KSplash.
systemd[1071]: Started dbus-:[email protected].
systemd[1071]: Created slice User Background Tasks Slice.
...
systemd[1071]: Finished Splash screen shown during boot.
systemd[1071]: Started dbus-:[email protected].
So it seems `/usr/share/dbus-1/services/org.kde.KSplash.service` is invoked
twice. The second invocation happens just after the splash screen is finished,
thus failed. We have the same logs even in those sessions where the bug doesn't
happen. So my theory is:
1. `/usr/share/dbus-1/services/org.kde.KSplash.service` is invoked by exactly
the dbus call instructing KSplash to quit.
2. So when KSplash is quiting, the service launches `plasma_waitforname
org.kde.KSplash`, resulting in a race condition. If the former quits before the
dbus name check in the latter, we have the bug.
One possible workaround is for KSplash to hold the dbus name for a few extra
seconds before quitting. But I guess there might be cleaner ways fix this.
STEPS TO REPRODUCE
1. Login from Plasma Login Manager.
2. Wait for one minute.
3. `journalctl -e`
OBSERVED RESULT
Error logs about dbus-:[email protected] failed.
EXPECTED RESULT
No errors.
SOFTWARE/OS VERSIONS
Operating System: KDE Linux 2026-10-03 02:54
KDE Plasma Version: 6.8.80
KDE Frameworks Version: 6.32.0
Qt Version: 6.11.2
Kernel Version: 7.2.8-arch1-2 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600H with Radeon Graphics
Memory: 8 GiB of RAM (7.7 GiB usable)
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