(In reply to jtossenb from comment #4)
> My Arch Linux is up-to-date, I use Mesa 10.4.2 and so commit
> 07c65b85eada8dd34019763b6e82ed4257a9b4a6 is included.

If it wasn't included, you wouldn't have the problem. :)

My question was: If you build Mesa *at* commit
07c65b85eada8dd34019763b6e82ed4257a9b4a6, does the problem occur with that? If
not, please bisect Mesa between that commit and the 10.4.2 release. If yes,
there's nothing to bisect.

> I am ready to do bisecting Mesa if you wish, but at the moment I don't know
> where to start, what kernel version to use during bisecting Mesa.

Any kernel which exposes the problem in your testing so far should do.