(In reply to comment #33)
> hie, i' tried to make a trace too, but i've failed to build apitrace frome
> git, and the version of ubuntu 14.04 which is 3.0 segfault with xcom :(
> 
> Does it help instead if i use R600_DUMP_SHADERS= 1 ?
> 
> If yes, someone can explain me how to redirect the output to a file because
> >> doen't work.

Compile apitrace 5.0 from here:

https://github.com/apitrace/apitrace/releases