I'm running Ubuntu 12.04 and with a ATI BeaverCreek Radeon HD 6550D. I installed a driver about a year ago, but now I'm getting weird graphic issues like white and black pixels. So I decided to uninstall the driver and install a new one.
The problem is that I can't remember which driver I installed a year ago. So can someone tell me, how to find out and how to uninstall that driver?
And what driver would you recommend for that graphic card. I read a lot of open source ati drivers, official ones... What is the best one? I'm using my ubuntu mainly with XBMC for watching movies, so is there any driver to prefer?
I forgot to mention, that my TV is connected through HDMI to my machine for watching HD movies. Maybe that is also another factor.