For me this issue occured when I also had the #815996 bug. I was able to workaround the first but then got stuck with this logout window.
But Workaround found! Simply click "Turn off..." (or whatever it is in english version) and the logout window will be replaced by the turn off window, which will be possible to close normally. At least this worked for me, just when I had given up... :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1427795 Title: the lock screen/log out window is stuck rendering desktop unusable To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1427795/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs