https://bugs.freedesktop.org/show_bug.cgi?id=82667
--- Comment #2 from Christoph Haag haagch@frickel.club --- (In reply to comment #1)
Does it also happen with llvmpipe?
No.
It also does not crash when I run it on llvmpipe.
For testing such things on PRIME v.s. no prime it would be good to be able to set up only xf86-video-ati in xorg.conf to be used in an "invisible" x server on a gpu with no outpus and then use e.g. vnc, but I didn't find any way to do this yet. "(EE) RADEON(0): No modes." seems to prevent X from starting, even with a modeline. (catalyst supports this OOTB)
Best I could do is send the download link per mail or so if you want to test yourself.