$ cat /var/log/Xorg.0.log | grep WW (WW) fglrx: No matching Device section for instance (BusID PCI:1:0:1) found (WW) fglrx(0): Failed to open DRM connection (WW) fglrx(0): board is an unknown third party board, chipset is supported (WW) fglrx(0): Only one display is connnected,so single mode is enabled (WW) fglrx(0): No DRM connection for driver fglrx. (WW) fglrx(0): Option "VendorName" is not used (WW) fglrx(0): Option "ModelName" is not used (WW) <default pointer>: No Device specified, looking for one...