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