All attempts to log in to my user account, guest, or an account I created to test get instantly thrown back to the login screen. I can log in through tty1 etc.
I have tried deleting .Xauthority and installing new Display Managers, but neither has worked. As per this answer I have tried purging lightdm, but it fails every time.
This only started this morning. All I can recall doing yesterday was adding a partition to an empty, secondary drive and playing some dota 2. I can't see how either of which would cause this though. :P
Running Ubuntu 14.10 (64 bit)
Thanks in advance!