You say the ATI driver was installed during installation but in your first post you said
Quote Originally Posted by johest View Post
I tried an reinstall off the ati driver, which does not work.
Which sounds like maybe you un-installed it and then failed to re-install it. So is the ATI driver actually installed?
$ zypper lr -u
$ zypper packages | grep -i ati
$ grep -ir driver /etc/X11/xorg*
Never actually dealt with the ATI drivers myself.