Hi list. I posted this as a bug https://bugs.freedesktop.org/show_bug.cgi?id=13459 On my Samsung R24plusF000 laptop ATI Mobility Radeon X2300 has non-ATI PCI vendor ID. As a result X does not start with radeonhd driver. I see "No device found" in Xorg.log. Video card presented in the system as: Vendor ID: 0x0001 Device ID: 0x7188 Subsystem vendor ID: 0x144D Subsystem device ID: 0xC515 Patch attached resolves this problem for me, but it is ugly for PCI_VENDOR_ID_ATI replacement. After recompiling with this patch applyed my display starts in 1280x800 resolution which is native for my panel. I have no experence with Xorg/Drivers so I do not know what is the right way to add more PCI vendor IDs support. Sensible part of Xorg.log attached also. Output from conntest is (with patch): Unknown device: 0x0001:0x7188 (01:00.00) -- Regards, Yuri Ovcharenko. amwsoft@gmail.com code.google.com/u/amwsoft