Erm, I've read in a forum that I need a driver on my graphic card, that support 3D under linux. Here you can see my graphic card and my operating system: ATI Technologies Inc ATI RADEON HD 4550 2D-driver: radeon 3D-driver: Unknown Gallium (7.11) Kernel: Linux 3.1.0-1.2-desktop i686 Distribution: openSUSE 12.1 (i586) KDE: 4.7.2 (4.7.2) "release 5" Maybe here is the problem? Maybe this can help. Greetz :)