Ubuntu 11.04 does not start, shows blank purple screen. Takes several restarts to run
I installed Ubuntu 11.04 from cd onto a 32 bit computer with Windows XP. I over wrote Windows and only have 11.04. It worked well since 11.04 was released. Now on start up get purple screen and no key board. Restart black screen with:
483.4560301] [drm] noveau 0000:01:00'0; GPU lockup-switching to software fbcom.
Restart again black screen with:
[30.136943] BUG:unable to handle kernel null pointer dereference A 0000eF8
Will finally work after several restarts. Update Manager not working. Maybe problem is with Chromium browser which doesn't seem to load right, just blank screen.
I have run repair broken packages, Sudo Apt-Get install-f and Sudo dpkg--configure-a. This is my first thread and I hope I have given you the info you need to help. Thank you.