Just a quick note on my successful installation of 3D acceleration on my MATROX G550 dual head graphics card. Allows me to play the arcade game Armagetron on SUSE Linux 9.0. see also ftp://ftp.matrox.com/pub/mga/archive/linux/2003/lnx30notes.txt 1. get mgadrivers-3.0.tgz from www.matrox.com 2. tar xvzf mgadrivers-3.0.tgz 3. cd mgadrivers 4. su 5. sh install.sh 6. change in /etc/sysconfig/kernel MODULES_LOADED_ON_BOOT=" cdrom ide-cd ide-scsi" to MODULES_LOADED_ON_BOOT=" cdrom ide-cd ide-scsi mga agpgart" 7. cp /etc/X11/XF86Config /etc/X11/XF86Config_bac 8. change in /etc/X11/XF86Config Section "Module" Load "dbe" Load "type1" Load "freetype" Load "glx" Load "speedo" Load "v4l" Load "extmod" EndSection to Section "Module" Load "dbe" Load "type1" Load "freetype" Load "glx" Load "dri" Load "speedo" Load "v4l" Load "extmod" EndSection and save in /etc/X11/XF86Config_with_3D You can leave Multihead activated. To use 3D and one monitor, do cp /etc/X11/XF86Config_with_3D /etc/X11/XF86Config to use both monitors and no 3D, do cp /etc/X11/XF86Config_bac /etc/X11/XF86Config and reboot.