After the system had operated for some hours, I stopped the system by using the menu 'Power Off'. It stopped neatly. Then after a minute I started the system again, but it failed. A hard reset (4 sec power-button) was necessary. Then wait 15 sec and restart the system. The system started without a problem. And here is the journalctl output.
** Attachment added: "20220305_prevboot.txt" https://bugs.launchpad.net/ubuntu/+bug/1960605/+attachment/5565994/+files/20220305_prevboot.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1960605 Title: System freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1960605/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
