https://bugs.freedesktop.org/show_bug.cgi?id=33790
--- Comment #6 from speps dreamspepser@yahoo.it 2011-08-05 16:46:36 PDT --- You got it, adding pci=nomsi to kernel solves all issues.
Thanks a lot.
Framerate is high enough, and all opengl apps runs fine even without .drirc (no blank output). Is this a real solution or just a workaround for a known bug?
I found the same answer for another related bug (even without no success), shouldn't this be FAQed somewhere?