(In reply to comment #15)
> Further, corruption of the compiz splash screen is not fixed with this patch
> (as expected of course). It appears scrambled in some checkerboard fashion,
> see the attached ogv I recorded with recordmydesktop. It happens with 3.8.0
> kernel, not sure about 3.7 (I do not think so) and definitely not with 3.6,
> all other components being unchanged and at current git.

That issue is probably bug 60802.