(In reply to comment #5)
> libEGL debug: Native platform type: drm (environment overwrite)

So you set EGL_PLATFORM=drm? Would be interesting to see the debugging output
without that as well.

> libEGL debug: dlopen(/home/atitest/install/lib/egl/egl_gallium.so)
> libEGL info: use DRM for display 0x1b741d0
> libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in
> eglInitialize(no usable display)
> libEGL info: use DRM for display 0x1b741d0
> libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in
> eglInitialize(no usable display)
> libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in eglInitialize
> (EE) RADEON(0): eglInitialize() failed
> (EE) RADEON(0): glamor detected, failed to initialize EGL.

That's not the same crash anymore, but 'just' an EGL initialization failure.
Does it get further if you set EGL_DRIVER=egl_dri2 as well?