(In reply to comment #28)
> (In reply to comment #27)
> > (In reply to comment #26)
> > > (In reply to comment #25)
> > >  LIBGL_DEBUG=verbose glxinfo | grep render
> > I don't have glxinfo
> 
> Ah I found it on archlinux AUR in the
> package mesa-demo-git. I'm just
> building it.

Here is the result:

libGL: OpenDriver: trying /usr/lib/xorg/modules/dri/tls/r600_dri.so
libGL: OpenDriver: trying /usr/lib/xorg/modules/dri/r600_dri.so
libGL error: dlopen /usr/lib/xorg/modules/dri/r600_dri.so failed
(/usr/lib/libglsl.so: undefined symbol: hash_table_string_hash)
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL: OpenDriver: trying /usr/lib/xorg/modules/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib/xorg/modules/dri/swrast_dri.so