Would you mind pastebin-ing your /var/log/Xorg.0.log(.old) after executing this command, please? Hopefully there's' some more info in there as to why the graphics aren't loading.
Go here: http://pastebin.ubuntu.com/ Paste Xorg.0.log into Content: Enter anything you like in Poster: Click the Paste! button Copy the address of your paste from your browser into your post here. This will be http://pastebin.ubuntu.com/ ending with a unique 6 digit number When we click the link in your post our browser will take us to your paste.