Comment # 14 on bug 89685 from Michel Dänzer

(In reply to Kevin from comment #9)
> I do `export R600_DEBUG=ps,vs,gs` and then run the game? Where and how do I
> get output? dmesg? jounralctl? Something else?

It should be in the stderr output of the game. Make sure you launch steam / the
game from a terminal so you can see it, or maybe just capture it to a file with
2>/path/to/file.txt.