I'm having the same trouble but with a Cedar PRO Radeon HD 5450 video card. I'm new to more technical troubleshooting Linux. I had to load the drivers manually after I installed 1.0 initially. I have an HP Z620 which does not come with an integrated video card. Is there a way to down grade the OS back to 1.1? I upgraded my Thinkpad 730 without a hitch. I figured this would be a cake walk, then Murphy smacked me across the room.
My kingdom for a backup....
I'm going to try your suggestions above
Z
