This seems to have worked for me. Currently running AIGLX at ~2300fps in glxgears and between 505 and 515 fps in fgl_glxgears.Originally Posted by Antiarch View Post
The good news is there's a simple work around for it. Find the Device section in your xorg.conf (Section "Device") and look for a line that starts with BusID. In quotes will be something like "1:0:0" (there will be different numbers depending on your card) Before that string of numbers, add "PCI:", to make it look like this: "PCI:1:0:0".
Had a few issues getting it going, but i think that was related to XGL and my xorg.conf.