I have a laptop with ubuntu 12.04 on it, with numerous desktops. The main one i use on it is gnome 3, which works fine. The computer was slow lately so i tried uses a lighter desktop. So i switched over to xfce to see how it would run in there. But when the desktop loaded xfce, xfcxe freezes. However when using Cntrl + Alt + F2 and logging in to reboot. However on reboot it now auto logs into the desktop xfce which is apparently messed up. The GUI isnt working at all. The only thing i can access is Cntrl + Alt + F2 on the computer.
I cant figure out how to force the computer to stop auto log in and auto log into xfce. I want to switch it back to gnome 3 desktop.
How can i do this via command?
I also seem to not be able to log in as root