I receintly done some updates on my Ubuntu 12.04 instalation and now I cannot use a resolution bigger than 1360 x 768. I tried to reinstall Ubuntu again and I have the same problem. Also on 13.04 or Cent OS I have similar issues.
Something happened because I used Ubuntu 12.04 without any issues on this hardware configuration with 3 months ago.
I also tried to add a new resolution with xrandr but is failing. Also I tried to pick another driver but the problem was not solved.
Any suggestions ?