AFAIK the long delay on logout is unity8 dumping core (bug 1535297). Can you provide your unity8.log from when the delay occurred? Or reproduce the bug and provide the log here?
** Changed in: unity8 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654308 Title: Logging out of the unity8 session snap takes a long time or sometimes hangs endlessly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1654308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs