I had the same problem on my labtop with ATI Radeon M9. Tried everything that is suggested in various postlist and nothing worked. Then I found this page http://www.gmpf.de/english/ and followed it's instuctions and voila! no more "Xlib: extension "GLX" missing on display ":0.0" but a working 3D OpenGL. :).
All I had to change was <Option "UseInternalAGPGART" "yes"> to <Option "UseInternalAGPGART" "No"> and restart X. Hope this helps. Regards, Arnar -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]