The current Radeon manpage included with rawhide XFree86 is out of date with the current driver in rawhide, as I've updated the driver to include various new code contributed by ATI which changes the way the driver works compared to the stock XFree86 4.3.0 release. Some users have confusion as to how to configure the driver now, and report various clone mode problems. These new options should permit people to configure properly: Option "MonitorLayout" "string" This option is used to overwrite the detected monitor types. This is only required when driver makes a false detection. The possible monitor types are: NONE -- Not connected CRT -- Analog CRT monitor TMDS -- Desktop flat panel LVDS -- Lapto flat panel This option can be used in following format: Option "MonitorLayout" "[type on primary], [type on secondary]" For example, Option "MonitorLayout" "CRT, TMDS" Primary/Secondary head for dual-head cards: (when only one port is used, it will be treated as the primary regardless) Primary head: DVI port on DVI+VGA cards LCD output on laptops Internal TMDS prot on DVI+DVI cards Secondary head: VGA port on DVI+VGA cards VGA port on laptops External TMDS port on DVI+DVI cards The default value is undefined.