On Thursday 07 October 2004 07:15, Ric Otte wrote: > Things are very slow for me under 2.6 kernels. Under 2.4.16 I was able > to play tuxracer just fine, but under 2.6.6 things are so slow that it is > unplayable (a second or so pause between command and action). I ran > glxgears under 2.4.16 and got output like: > 2430 frames in 5.0 seconds = 486.000 FPS > Under 2.6.6 I get output like: > 1332 frames in 5.0 seconds = 266.400 FPS > I ran glxinfo and noticed that under 2.4.16 direct rendering was YES but > it was NO under 2.6.6. I then tried upgrading to 2.6.8.1 (changing the > agpgart chipset to via from intel in the kernel (i do have a via chipset) > and things got worse under glxgears with the correct chipset in the > kernel: 860 frames in 5.0 seconds = 172.000 FPS > I do notice that under 2.4.16 I get the following in dmesg: > dmesg |grep agpgart > Linux agpgart interface v0.99 (c) Jeff Hartmann > agpgart: Maximum main memory to use for agp memory: 439M > agpgart: Detected Via Apollo Pro KT266 chipset > agpgart: AGP aperture is 32M @ 0xfc000000 > and under 2.6.6 I get: > Linux agpgart interface v0.100 (c) Dave Jones > [drm:drm_init] *ERROR* Cannot initialize the agpgart module. > while under 2.6.8.1 I get: > $ dmesg |grep agpgart > Linux agpgart interface v0.100 (c) Dave Jones > [drm:mga_probe] *ERROR* Cannot initialize the agpgart module. > agpgart: Detected VIA KT266/KY266x/KT333 chipset > agpgart: Maximum main memory to use for agp memory: 439M > agpgart: AGP aperture is 32M @ 0xfc000000 > So things seemed to improve under 2.6.8.1 in that at least I'm detecting > the via chipset, but I'm still not initializing the agpgart module. I'm > using a Matrox g550 video card. > > Any suggestions as to what might be wrong or what to do would be > appreciated. I'm not a debian expert, and I suspect I may be doing > something > obviously wrong. > Thanks, > Ric
Just a guess, but did you reconfigure X to run at a nice value of 0? The 2.4 kernels ran best when X was niced to -10, but with the 2.6 anticipatory scheduler, it turns out to be a bad thing. Also, check out your /etc/modules contents. Are you trying to load some modules you shouldn't? >From your error messages, it does seem that 2.6.8 properly initializes the agpgart, but I don't know why it also gives you the error message. You didn't indicate whether direct rendering was turned on in 2.6.8.1. Was it still off? Justin Guerin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
