On Fri, Aug 6, 2010 at 16:34:31 +0200, Erich Schubert wrote: > Hi, > It looks like there is an important bugfix in the 2.6.35 kernel for > issues involving intel GPUs, in particular the i945. Since the upgrade, > I have not had these issues anymore, however, I also have not been using > that computer a lot. > > Anyway, here's the relevant change from 2.6.35-rc6: > --- > commit 944001201ca0196bcdb088129e5866a9f379d08c > Author: Dave Airlie <airlied@redhat.com> > Date: Tue Jul 20 13:15:31 2010 +1000 > > drm/i915: enable low power render writes on GEN3 hardware. > > A lot of 945GMs have had stability issues for a long time, this > manifested as X hangs, blitter engine hangs, and lots of crashes. > > one such report is at: > https://bugs.freedesktop.org/show_bug.cgi?id=20560 > > along with numerous distro bugzillas. > > This only took a week of digging and hair ripping to figure out. > > Tracked down and tested on a 945GM Lenovo T60, > previously running > x11perf -copypixwin500 > or > x11perf -copywinpix500 > repeatedly would cause the GPU to wedge within 4 or 5 tries, with > random busy bits set. > > After this patch no hangs were observed. > > cc: stable@kernel.org > Signed-off-by: Dave Airlie <airlied@redhat.com> > --- > > We should make sure to get this fix into the squeeze kernel! > It's in linux-2.6 2.6.32-19. We'll also backport the fix to the X driver in lenny to try and fix issues there. http://pkg-xorg.alioth.debian.org/intel/ has preliminary packages. Cheers, Julien
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