On Sun, 16 Nov 2008 20:51:07 +0100, Jan de Groot <jan@jgc.homeip.net> wrote:
On Sun, 2008-11-16 at 13:55 -0500, pyther wrote:
I have updated to Xorg-server 1.5 from testing. However I get extremely low fps (60fps) when running glx-gears. The error I get in the terminal is "Failed to initialize TTM buffer manager. Falling back to classic."
That's not a bug, it's a feature. The 60fps you're getting is Vsync. Nothing wrong. The message you get is a warning. The DRI driver in intel-dri 7.2 has TTM support, but as X and kernel don't have support for it as it will never get integrated, the DRI driver will fallback to the old rendering method as in intel-dri 7.0.
There's nothing buggy here and xorg-server 1.5 will go to extra without keeping 1.4 around.
I'm a bit confused. Can you explain to me about this Vsync thing? When running xorg-server 1.4 I was able to get ~650fps. I have not changed my xorg.conf since switching to xorg-server 1.5 where I get a max of 60fps.
From the gentoo bug report: http://bugs.gentoo.org/show_bug.cgi?id=237468
"When running programs from the console in xorg-server 1.5, I get the warning "Failed to initialize TTM buffer manager. Falling back to classic." glxgears performance has dropped by around 90% and compiz runs much slower. There are a variety of window placement issues that I believe are related. I have an Intel 965, using xf86-video-i810-2.4.2-r1 and mesa-7.1." There seems to be no mention of "vsync" anywhere on the page and many people have this issue. I would be more than willing to play with the "vsync" to see if this is an issue or not, but I am not sure where to start. If you can tell me where and what I should modify I would appreciate it.