Comment 6 for bug 986967

I've been able to log in successfully a few times, but I'm not able to discern a pattern. Deleting .Xauthority and then rebooting to log into unity is not reliable. Occasionally some combination of deleting .Xauthority, /var/lib/.Xauthority, logging in with XMonad and logging in to unity will work. Once I was able to log into unity twice in a row, and then it stopped working again.

I'm going to throw a fresh install on there since I have my home folder on a separate partition anyway. Hopefully that will take care of the issue.