I have just puchased a Dell Optiplex GX280 and installed an AMD Radeon HD5450 1GB graphics card, this is inserted in the PCI express slot. I am currently experiencing significance graphics issues from boot into ubuntu with green horizontal lines present.
Activating fglrx results in a total loss of screen resolution into a colorful mess which is unintelligible. After purging the fglrx drivers and re installing open source drivers I have managed to get a least some functionality back but the original issue still remains. As this issue is concurring from boot, is this an issue with the graphics card or is it an Ubuntu issue?
Please help as I have run out of options from the visible threads.