Thomas H. George wrote:
I suspect that you're getting logged in fine, but X is not starting for some reason, and thus is failing you back to the login.Suddenly I can no longer login to gdm. When I enter my user name the screen goes blank then returns to the login screen. I created an new user and when I tried to log in as this user the screen went blank after I entered the new user's password. I still can login at any of the terminal screens with either my user name and password or the new user's name and password.
Log in at the console, and see if you can start X with "startx"; if you can't, then that's your problem.
-- Kent