I recently upgraded from ubuntu 13.10 to 14.04 and the screen is blank and unable to login. When CTRL-ALT-F1 to a console and performing the following recommendations here didnt solve my problem.Additionally running 'xrandr' returns 'n display', which suggests there is a problem with my video card, which is an AMD/ATI Radeon HD 2400 PRO/XT, the screen resolution appears to be defaulting to 1280x1024 when should be 1920x1080.
The computer is a Dell Optiplex 755. Any help would be appreciated.
sudo apt-get remove --purge fglrx
and see if that fixes the problem. – Sachin S Kamath Jan 18 '15 at 03:44