See bug 890661 - seems to be a similar problem with a somewhat better description. Please accept my apology if this is not the case.
Switch to the terminal (Ctrl + Alt + F6) and back (Ctrl + Alt + F7) to see if it will give your display back. Also, try waiting for up to 5 minutes for your display to show. I would also suggest monitoring system CPU during this time to find out if it is being 100% used and which process is using it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/292591 Title: System hangs after changing user with GNOME user switcher To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fast-user-switch-applet/+bug/292591/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
