Linux下使用双显示器     再描述我的使用环境,Kubuntu 6.06,IBM X31,ATI Radeon M6.
    使用MergedFB软件,很简单只要在/etc/X11/xorg.conf,Section "Device" 里面加上这样一段

Option "MergedFB" "true" #Enable MergedFB function
Option "MonitorLayout" "LCD, CRT" # Use LCD and CRT even if you have 2 LCD's or CRT's
Option "CRT2Hsync" "30-65" #Horizontal Sync of the Monitor
Option "CRT2VRefresh" "50-75" #Vertical Refresh rate of the Monitor
Option "OverlayOnCRTC2" "true"
Option "CRT2Position" "RightOf" #Physical location of your secondary
Option "MetaModes" "1024x768-1024x768" #Monitor Resolutions for Primary-Secondary monitors
Option "MergedXineramaCRT2IsScreen0" "false" #which screen is going to be the primary screen

重启X-server就可以。
注意:不要使用KDE所带的“system settings" ->"display”双显示器功能,我试过但不成功。

参考网站: http://ubuntuforums.org/showthread.php?t=221174 http://blog.chinaunix.net/u/31934/showart_287358.html