Could you check if running the command unity --reset helps? Since it is occurring in the guest session makes me feel like this is a user configuration issue.
** Changed in: unity (Ubuntu) Status: Confirmed => Incomplete ** Changed in: unity 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/877470 Title: screen does not redraw when unity is active To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/877470/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs