Very slow shutdown on Wayland "sddm.service: State 'stop-sigterm' timed out. Killing."

Support KDE Plasma
1

When shutting down or rebooting KDE Plasma on Wayland, it takes a long time.

I’ve found this in the log, which makes me believe there’s something wrong with SDDM:

dez 01 21:37:53 desktop-nfp systemd[1]: Removed slice User Slice of UID 1000.
dez 01 21:37:53 desktop-nfp systemd[1]: user-1000.slice: Consumed 43min 23.540s CPU time.
dez 01 21:39:22 desktop-nfp systemd[1]: sddm.service: State ‘stop-sigterm’ timed out. Killing.
dez 01 21:39:22 desktop-nfp systemd[1]: sddm.service: Killing process 711 (sddm) with signal SIGKILL.
dez 01 21:39:22 desktop-nfp systemd[1]: sddm.service: Killing process 14249 (Xorg) with signal SIGKILL.
dez 01 21:39:22 desktop-nfp systemd[1]: sddm.service: Killing process 742 (QDBusConnection) with signal SIGKILL.
dez 01 21:39:22 desktop-nfp systemd[1]: sddm.service: Main process exited, code=killed, status=9/KILL
dez 01 21:39:22 desktop-nfp systemd[1]: sddm.service: Failed with result ‘timeout’.
dez 01 21:39:22 desktop-nfp systemd[1]: Stopped Simple Desktop Display Manager.

Notice the jump from 21:37:53 to 21:39:22

This only happens on Wayland and not on X.

2

It’s known bug, will be fixed in next release. If you don’t want to receive these messages, you can logout first, then shutdown.

3

How do you know it’s fixed?
The bug listed in that thread is still not marked as resolved.

4

Because this merge in master branch most likely solve this issue. The fix probably will go to 5.24.

5

Glad this is being addressed, as it’s really annoying. Find it a bit odd though that I’ve got EndeavourOS on the same machine and it doesn’t have the same issue.

6

Oh thanks.
According to the discussion, this will be backported to 5.23 too. Nice!