[radeonhd] radeonhd Sapphire HD3650: no devices detected

Hi, Have a Sapphire HD3650, and got no device detected when run startx. Here is my xorg.conf and Xorg.0.log my lspci: 01:00.0 VGA compatible controller: ATI Technologies Inc Mobilitiy Radeon HD 3600 Series 01:00.1 Audio device: ATI Technologies Inc RV635 Audio device [Radeon HD 3600 Series] What can I do? Thanks Georges