The Laptop does not shutdown or reboot properly. After an update it hangs and I have to push the on/off switch for a long time to force the Laptop to switch off.
The journalctl output of the last reboot is pasted here
So, I am a little bit lost with finding the problem.
Welcome to the forum!
Sometimes I ask a silly question, like now 
When the laptop hangs at shutdown, have you ever walked away and let it sit to see if it stays hung, or if it shuts down?
These entries are interesting:
Nov 26 12:52:06 realgza.ihs.uni-stuttgart.de haveged[926]: haveged: Stopping due to signal 15
Nov 26 12:52:06 realgza.ihs.uni-stuttgart.de haveged[926]: haveged starting up
haveged got a signal to shut down, then it shows starting up. Then only one other log entry.
(Sidenote: we had that problem with a desktop machine a long time ago. We walked away and checked on it after an hour - turns out it shut down about 10 minutes after we walked away.
That allowed the system to complete the shutdown and finish writing events to the logfile. In the logs, we easily found the delayed 10 minute timestamps, which showed the process the kernel / system was waiting on).
Thank you very much for your fast reply.
When the laptop hangs at shutdown, have you ever walked away and let it sit to see if it stays hung, or if it shuts down?
It stays hung. I wait for 15 minutes.
Do you think that the service haveged could be the problem?
Does booting with “plymouth.enable=0 splash=none” in the kernel command line improve the situation?
I have just seen that you are using Leap 15.6, so please ignore my comment. Sorry.
@fkrueger wrote:
… and …
I’m slightly confused why you want to retract your question, just because of “using 15.6” (?) We add those kernel statements to all our openSUSE machines (previous TW and now 15.6). We also remove the “quiet” argument.
We do it so we can visually check for possible warnings | errors during bootup. (but not to reduce CPU usage).
No. It does not improve the situation. Still the same issue.
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