This is not a duplicate, when it happens the UI is completely frozen, no indicator and no launcher even with the dash visible. In the screenshot attached the greeter even stopped in the middle of the transition.
** This bug is no longer a duplicate of bug 1295623 Sometimes input breaks and only edges are responsive -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1360593 Title: unity8 freezes randomly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1360593/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs