Hi Paul, it turned out there is a bug in the linux kernel up to and including 2.6.36 concerning drivers/gpu/drm/radeon when it comes to all graphics chips like RV350.
Does anybody know about a patch for gentoo-sources-2.6.36 ? Many thanks for a hint, Helmut. On 10/22/10 17:04:24, Paul Hartman wrote: > On Fri, Oct 22, 2010 at 4:41 AM, Helmut Jarausch > <jarau...@igpm.rwth-aachen.de> wrote: > > Hi, > > > > this is a bit off topic, since it primarily concerns a laptop > running > > OpenSuSe 11.3, but I do need your help and I known there are > experts > > here. > > > > This old laptop has a > > radeon RV350 (mobility Radeon 9600 M10) graphics card. > > > > There is an xf86-video-ati driver installed. > > > > Now, when booting with the (default) radeon.modeset=1 > > the graphics is dead slow (not only for glxgears : 200 frame/s but > for > > my OpenGL application (Impressive), as well). > > > > Now, when I replace the option on the kernel command line to > > radeon.modeset=0 > > glxgears is much faster ( about 1800 frames/s ) > > BUT my OpenGL application (python gtk + opengl) > > now freezes the whole machine - only power on/off can revive > > it. > > > > Hopefully, someone has an idea on what is going wrong here. > > > > (The hardware is too old for a recent ATI closed source driver > > supporting a recent kernel 2.6.34.x) > > > > Many thanks for your help which is very much appreciated. > > Helmut. > > I have a very similar card in my Gentoo laptop (Mobility Radeon 9700, > I think maybe it's the same as 9600 but clocked higher). I tried KMS > radeon driver but had some issues, maybe it was user-error but when I > disabled KMS everything went back to normal. > > Otherwise if you want to stick with KMS all I can think of is to try > different AccelMethod settings in your xorg.conf to see if you get > better performance from one of them. I think maybe you need to > disable > console framebuffer as well, in case you're using one. > > >
