(In reply to Branko from comment #4)
> I have cloned mesa-git and i'm trying to do it, but i get only this output:
> 
> $ git bisect start mesa-12.0.1 mesa-11.2.2
> Previous HEAD position was 4cd5e5b... nouveau: update the Makefile.sources
> list
> Switched to branch 'master'
> Your branch is up-to-date with 'origin/master'.
> Bisecting: a merge base must be tested
> [4cd5e5b48e24a8b8ff7255022208d3e5fe6557d8] nouveau: update the
> Makefile.sources list

This is the expected result. Now you need to build and install Mesa and see if
the problem persists.

If you never build and installed Mesa before I suggest you just checkout
version 11.2.2 (e.g. run "git checkout mesa-11.2.2") and try that first.