Login loop 14.04 but guest account is accessible

After upgrading to 14.04 from 13.10 which worked fine, I cannot get past login as it just loops back. Guest account works fine. I can login to the console by hitting Ctrl+Alt+F1 using username and password. Not sure what is causing problem.

Update:

• Video card is N9500GT




• Tried chown username:username .Xauthority but now get only splash screen at login with password. Same thing happens in GDM.




• Also tried sudo mv .Xauthority .Xauthority.bak no change.




• Tried cat ~/.xsession-errors but got message that starts with can't save user-dirs.dirs and then gives more msgs and stops.

How to see what is in .xsession-errors file.