Shepitessék a doksi ehhez:
Option 2: Manually Download/install/Configure the ATI Driver
This method is a bit more tricky and, in my opinion, a little less likely to work. So here are the steps:
Download your driver from AMD's website: http://support.amd.com/us/gpudownload/Pages/index.aspx
Right click on the downloaded file. Go to Properties and allow it to be executed as a program.
Now double click the file, let it run in Terminal, and enter you password when and if required.
Once done, open up another Terminal and enter the following command: sudo aticonfig --initial
This method applies to all Ubuntu-based distros (Kubuntu, Linux Mint, Xubuntu etc.), by the way.