[shao@tuska ~]$ LIBGL_DEBUG=verbose glxinfo > /dev/null
libGL: XF86DRIGetClientDriverName: 8.35.5 fglrx (screen 0)
libGL: OpenDriver: trying /usr/lib/xorg/modules/dri//fglrx_dri.so
libGL: XF86DRIGetClientDriverName: 8.35.5 fglrx (screen 0)
drmOpenByBusid: busid is PCI:1:0:0
drmOpenDevice: minor is 0
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 4, (OK)
drmOpenByBusid: drmOpenMinor returns 4
drmOpenByBusid: drmGetBusid reports PCI:1:0:0
ERROR: version mismatch - 2D module [8.35.5] incompatible with OGL client module [8.36.5].
libGL error: InitDriver failed