Recently I installed the latest version of Ubuntu 12.10. The installation went ok however, every second time I tried to log-in I couldn’t. The log-in screen wasn’t showing.
The solution was to edit the
grub and add the following line:
grub run following command and add the line above:
gksudo gedit /etc/default/grub
FYI, I run a GeForce 210 graphic card with a DELL 24″ monitor connected on DVI. The problem was only when I had the monitor connected on DVI, on VGA was ok.
Hope you find it helpful!