[REGRESSION] nouveau: Severe screen corruption on (0xaf, nv50)

Henrik Rydberg rydberg at euromail.se
Sun Oct 21 00:10:24 PDT 2012


On Thu, Oct 18, 2012 at 11:58:09AM +0200, Henrik Rydberg wrote:
> Hi Ben,
> 
> 3.7-rc1 messed up the screen on my MacBookAir3,1 (nv50, 0xaf) pretty
> badly. Not surprisingly,
> 
> commit 3863c9bc887e9638a9d905d55f6038641ece78d6
> Author: Ben Skeggs <bskeggs at redhat.com>
> Date:   Sat Jul 14 19:09:17 2012 +1000
> 
>     drm/nouveau/instmem: completely new implementation, as a subdev module
> 
> is the first bad commit. Standing on that commit, booting and then
> starting X yields the output below. Hints are especially appreciated,
> considering the patch is almost 8000 lines.

Going through one suspend/resume cycle makes the corruption go away,
and there are no more errors in dmesg. Oddly enough, I have seen
something very similar when using i915 on the MBP10. Builtin modules
and systemd in both cases. Maybe this is a general drm issue. Any
thoughts?

Thanks,
Henrik


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