After typing my password it starts to load but then comes right back to login screen.
I tried Ctrl+Alt+F_ but it doesn't work too, the screen gets black and after a while returns to the login screen.
It seems related to the ATI driver that I installed, if I could somehow remove it should be worth trying.
But without being able to log in or reach the shell how will I do it?
Re-installing the system is not an option for me.