My computer has an ATI card, which supports 3D, but doesn't refresh the screen properly.
This is because I use the classic session on 11.04 instead of Unity. That's OK.
But when I start a Guest Session, the Unity-based session starts automatically, because this are the default settings for new users.
So, is there any way to change the session to start by default?
(So the classical GNOME desktop gets launched instead of Unity)