I ran into some problems while setting up my openSUSE 11.2 x64 system using ATI graphics. The problems occurs during the install and configuration of ATI's proprietary driver.
First of, you must enable POSIX shared memory, since this is not enabled by default in openSUSE. (At least not in my case).$[BREAK]$
Please note that this guide is intended for x86_x64 only. It might work for x32 as well if you mod the pre-requisite part.