I am on ubuntu 12.04 and forced a shutdown (hardware switch). Now I can't login anymore. In particular, after entering my password I get sent back to the login screen. The error message is to fast for me to read. I am, however, able to login into the Guest account through the usual login screen, and able to login into my own account on tty1 after pressing
Ctrl+Alt+F1. What should I try to get back into my own account via the login screen and get back to a working desktop?
Update: I can login with gdm, but not with the (default) lightdm. So the forced shutdown seems to have broken lightdm. The question now is, how do I fix a broken lightdm?