After I have set the position of the extern screen right of the built-in-screen instead of left of the built-in-sreen, in the negative area and...
Section "ServerLayout" Identifier "Default Layout" InputDevice "Generic Keyboard" InputDevice "Configured Mouse" InputDevice "Generic Mouse" InputDevice "LogitechUSBMouse" Screen "build-in-screen" 0 0 Screen "extern screen" RightOf "build-in-screen" EndSection ...set the Bus-Id, it works well. Section "Device" Identifier "ATI Radeon 9000 M9 (build-in-screen)" Driver "radeon" BusID "PCI:1:0:0" Option "DynamicPM" "true" Option "DynamicClocks" "true" Option "DPMS" Screen 0 EndSection Section "Device" Identifier "ATI Radeon 9000 M9 (extern display)" Driver "radeon" BusID "PCI:1:0:0" Option "DynamicPM" "true" Option "DynamicClocks" "true" Option "DPMS" Screen 1 EndSection Thanks for your advice. Best Regards Sebastian Noack -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]