Further update. Exited from Thunderbird, no other application running and Desktop was completely corrupted. See attached screenshot. Was able to restore Desktop by holding down left mouse button and 'erasing' artifact.
** Attachment added: "Screenshot-2.png" https://bugs.launchpad.net/ubuntu/+bug/771370/+attachment/2094387/+files/Screenshot-2.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/771370 Title: display is corrupted -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
