Ubuntu always freezes at the login screen. I had the opportunity to login only twice since installed.
I'm using a Toshiba Satellite C655D, with an AMD E-240 1.5 GHz 64x processor and Ubuntu 11.10 amd64.
I am a newbie to Ubuntu so I don't know what to do.
- Clarification: I'm not able to choose fallback mode because the system freezes once the login screen appears.