Deleting and re-adding the guest account did not help at all - immediate crash again.
And, I probably screwed up the guest account permissions and/or password, but too bad... -- Black screen after clicking to start a Guest Session https://bugs.launchpad.net/bugs/266911 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs