Hi, On Mon, Apr 19, 2010 at 7:39 AM, Geir Ove Myhr <gom...@gmail.com> wrote: > Vlad, thank you for taking an interest in helping. We have followed the > upstream bug report (freedesktop-bugs #27187 at the top of this page) > and we know about the fix. > >>"Anyway the i855GM issues have just been radically fixed by Daniel Vetter, >>you can find the patch and the complete kernel > sources archive here:http://www.iragan.com/linux/i855GM/";
I took a look over the patches; whilst there is a radical re-working of things - what is interesting is seeing what was shipped (supposedly, this is from the comment and not verified) in Fedora 13. They have a 2 line patch. >From http://www.iragan.com/linux/i855GM/old_patches/drm-intel-big- hammer.patch RedHat patch used in Fedora Core 13. This patch prevents instantaneous crashes when starting Xorg. diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 37427e4..08af9db 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2553,6 +2553,11 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, mutex_lock(&dev->struct_mutex); + /* We don't get the flushing right for these chipsets, use the + * big hamer for now to avoid random crashiness. */ + if (IS_I85X(dev) || IS_I865G(dev)) + wbinvd(); + i915_verify_inactive(dev, __FILE__, __LINE__); if (dev_priv->mm.wedged) { > It is the kernel that needs an alternative version, changing xorg will > not fix this. It's not too hard to compile, and I would already have > done this if I had a i386 installation of Lucid available. It may be worthwhile asking the kernel guys about incorporating this into the kernel. I am compiling 2.6.32-21-generic to test this out to see if it works for me. I'll report back in a few hours. Cheers, Anand -- MASTER: [i855] GPU lockup (apport-crash) https://bugs.launchpad.net/bugs/541511 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
