$ grep -e EE -e WW /var/log/Xorg.0.log
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(EE) Failed to load /usr/lib/xorg/modules/extensions/libGLcore.so
(EE) Failed to load module "GLcore" (loader failed, 7)
(II) Loading extension MIT-SCREEN-SAVER
(WW) Warning, couldn't open module speedo
(EE) Failed to load module "speedo" (module does not exist, 0)
(WW) fglrx(0): board is an unknown third party board, chipset is supported
(WW) fglrx(0): Specified desktop setup not supported: 8
(WW) fglrx(0): ***********************************************
(WW) fglrx(0): * DRI initialization failed! *
(WW) fglrx(0): * (maybe driver kernel module missing or bad) *
(WW) fglrx(0): * 2D acceleraton available (MMIO) *
(WW) fglrx(0): * no 3D acceleration available *
(WW) fglrx(0): ********************************************* *
(WW) fglrx(0): Option "VendorName" is not used
(WW) fglrx(0): Option "ModelName" is not used
(WW) fglrx(0): XVideo not supported without DRI enabled