Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have Ubuntu 12.04 64bits and it worked fine until today. This is the problem: when I introduce my password at the login screen a black window appears and then it comes back to the same screen. If I start as a guest everything works fine, but I can't log in with my normal account.

I tried the following with no luck:

Installing GDM and/or reinstalling lightdm

Trying to remove the .Xauthority file

Changing .Xauthority

I can login through a virtual terminal (ctrl+alt+F1) without a problem.

Thanks in advance.

share|improve this question
up vote 1 down vote accepted

I solved it reinstalling my graphics drivers.

How to install latest Nvidia Drivers

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.