https://bugs.freedesktop.org/show_bug.cgi?id=29066
--- Comment #9 from Yann yannubuntu@gmail.com 2010-07-27 01:36:26 PDT --- (In reply to comment #8)
Have you compiled mesa with --enable-debug? It might give you some nice assertion failures hopefully.
i am not fan of compilation, but i can try it if it is necessary and if you explain me step-by-step :)