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Bug#500281: xserver-xorg-video-savage: freezes the entire system with some OpenGL screensavers



On Fri, 25 Sep 2009 22:28:06 +0200 Brice Goglin wrote:

> Francesco Poli wrote:
> > Nonetheless, the test was not completely error free.  Indeed, some
> > worrying entries were logged to /var/log/kern.log:
> >
> >
> > [  582.975686] Xorg:5396 conflicting memory types 90000000-95000000 uncached-minus<->write-combining
[...]
> > As a consequence, I am *not* sure that the bug can be safely considered
> > as fixed...
> >   
> 
> This looks like a kernel problem to me. It's probably the Xserver asking
> the kernel to set some memory range as WC but the kernel PAT code fails
> to do so for some reason, it sets UC- minus instead (things should be
> slower then).

Things are veeeryyyy slooooowwww, indeed!
It seems that the long-awaited xorg migration to testing caused my
already slow video chipset to become even slower with OpenGL
applications...   :-(

> Which kernel are you using ?

The one currently in testing:

linux-image-2.6-686/2.6.30+20
linux-image-2.6.30-1-686/2.6.30-6


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..................................................... Francesco Poli .
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