I get this as welll. I just kill unity8 to work around it. My guess is the fix is in qtmir
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1502057 Title: Logout from Unity8 on wily desktop takes a very long time (~30sec of black screen) Status in unity8 package in Ubuntu: Confirmed Bug description: Logout from Unity8 on wily desktop takes a very long time (~30sec of black screen) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1502057/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp