Does it ever "recover" from the black screen? Note it may take a minute or two, but it should finally go away.
Can you clear /var/crash/* and try again, see if there's a .crash file of unity8 in there after logging out? ** Changed in: unity8 (Ubuntu) Status: New => Incomplete ** Changed in: canonical-devices-system-image 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/1618988 Title: unity8 goes to black screen 'n freeze after logout attempt To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1618988/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs