I just installed Ubuntu 12.04 on my computer. At first it worked just fine, but when i started updating the system just "updated" the screen, and then freezed. Same thing happens when I log in. Any tip?


I had a lot of problem when updated to 12.04.

What i've done was in a console ( ctr + alt + f1 ) to uninstall the packages xserver-xorg, ubuntu-desktop (and fglrx packages because i have an ati)

To uninstall: sudo apt-get remove --purge xserver-xorg ubuntu-desktop

After doing this you may have uninstalled some usufull packages like gnome. Before uninstall check the packages that apt-get uninstalled to manually do that when you reinstall again the packages.

sudo apt-get install xserver-xorg ubuntu-desktop

--------- [init] DO YOU HAVE AN ATI?---------------- sudo apt-get remove --purge fglrx*

Then try to install your graphic card drivers property. If you have an ati:

http://support.amd.com/us/gpudownload/Pages/index.aspx (download it before you uninstall these packages)

I also recommend do check this post: X doesn't start after Upgrade from 11.10 to 12.04

--------- [END] DO YOU HAVE AN ATI?----------------

Before you try this you can also try to run the command:

apt-get install --reinstall xserver-xorg ubuntu-desktop

Good luck.

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