<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> If I remember right there is a not so reliable or supported option that enables 3d in conjunction with composite. I have never tried it, but I remember reading about it. Matt James Gray wrote: <blockquote cite="mid200510041558.26867.james@grayonline.id.au" type="cite"> <pre wrap="">On Monday 26 September 2005 15:35, James Gray wrote: </pre> <blockquote type="cite"> <pre wrap="">I've been using the packages from Flavio Stanchina (<a class="moz-txt-link-freetext" href="http://xoomer.virgilio.it/flavio.stanchina/debian/fglrx-installer.html">http://xoomer.virgilio.it/flavio.stanchina/debian/fglrx-installer.html</a>) for a while with my Ati X300 lappy. Everything was happy and 3D apps/screen savers were smoooth :) This morning I did an "apt-get dist-upgrade" and among a few KDE3.4.2 updates there was a new kernel and new headers etc. This normally isn't a problem as after the reboot, to load the new kernel, I loose 3D acceleration until I recompile the fglrx kernel module. So I went and did that and can successfully load the kernel module. </pre> </blockquote> <pre wrap=""> </pre> <blockquote type="cite"> <pre wrap="">/var/log/Xorg.0.log: (II) fglrx(0): UMM area: 0xc0501000 (size=0x03aef000) (II) fglrx(0): Composite extension enabled, disabling direct rendering </pre> </blockquote> <pre wrap=""> ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Should've read the error message in context shouldn't I? </pre> <blockquote type="cite"> <pre wrap="">(WW) fglrx(0): *********************************************** (WW) fglrx(0): * DRI initialization failed! * (WW) fglrx(0): * (maybe driver kernel module missing or bad) * (WW) fglrx(0): * 2D acceleraton available (MMIO) * (WW) fglrx(0): * no 3D acceleration available * (WW) fglrx(0): ********************************************* * </pre> </blockquote> <pre wrap=""> In /etc/X11/xorg.conf there is the following lines: ... Section "Extensions" Option "Composite" "Enable" EndSection Comment out this entire section (need to be root/sudo) then restart the X server and voila. Accelerated 3D again. It seems the composite extension is incompatible with the 3D acceleration. No big deal for me, I don't use it. If you have turned on experimental transparencies etc, then this conflict may affect you too. The fix is to disable the composite extension. HTH someone out there....it's been bugging me for a week or so :( Cheers, James </pre> </blockquote> </body> </html>