I recently upgraded from 10.04 to 12.04 Ubuntu, but I cannot get used to the Unity desktop, so I decided to use Gnome instead, which I loaded from the Software Center (or whatever it's called).
BUT, now when I logon, I get a light blue screen with a few letters here and there, but nothing else.
Fortunately, I can run headless using puTTY.
So now the question is: how do I revert to the Unity desktop?
Can anyone help?