The problem did not occur anymore, so I set this bug report to fixed. I don't know, which updates have solved this problem, but there were many updates regarding systemd, upstart, kernel updates, udev, etc .
** Changed in: kde-workspace (Ubuntu) Status: New => Fix Released ** Changed in: upstart (Ubuntu) Status: New => Fix Released ** Changed in: acpid (Ubuntu) Status: New => Fix Released ** Changed in: upstart (Ubuntu) Assignee: (unassigned) => Bernhard (baumber) ** Changed in: kde-workspace (Ubuntu) Assignee: (unassigned) => Bernhard (baumber) ** Changed in: acpid (Ubuntu) Assignee: (unassigned) => Bernhard (baumber) -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kde-workspace in Ubuntu. https://bugs.launchpad.net/bugs/1421429 Title: [trusty] Frequently no clean shutdown or reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/1421429/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs