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I installed Ubuntu 12.04 today. Everything went fine. I booted the computer, the password screen appeared. I entered the password and pressed enter. However the desktop never initiates. It freezes in a black screen, and sometimes a error message appear saying that the application Compiz has closed unexpectedly. I'm really eager to start working with Ubuntu, so all help would be appreciated. Keep in mind that I don't have much experience with Ubuntu. Thanks. D.

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marked as duplicate by Braiam, Fabby, Charles Green, Pilot6, David Foerster Jan 29 at 9:48

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Maybe Compiz is getting trouble with your graphics card. Click on the Ubuntu logo near your name and select Ubuntu 2D, this will load a unity version that is independent on 3D acceleration.

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Try removing compiz from your system and reinstall it, this should do the trick.

  1. Go to a terminal session by pressing Alt-Ctrl-F1.

  2. Login

  3. Enter the following:

    apt-get --reinstall install compiz

  4. Reboot and try again.

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