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.


I solved it reinstalling my graphics drivers.

How to install latest Nvidia Drivers

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