转自：
上周在用单位的闲置硬盘装了个CentOS 5.4 x64，发现不能像win7一样默认识别双屏。自己搞了搞总是失败，今天上午在网上google了一下，，有高人说需要这么办。Section “Screen”下面添加如下内容：Option “TwinView”——–估计是告诉X使用双屏显示。Option “MetaModes” “1280*1024 1280*1024”——–告诉X显示的分辨率。Option “TwinView Orientation” “RightOf”——–估计这是告诉X附加的显示器在右侧。全部配置内容如下：# nvidia-xconfig: X configuration file generated by nvidia-xconfig# nvidia-xconfig: version 1.0 (buildmeister@builder58) Fri Aug 14 18:33:37 PDT 2009# Xorg configuration created by pyxf86configSection “ServerLayout” Identifier “Default Layout” Screen 0 “Screen0” 0 0 InputDevice “Mouse0” “CorePointer” InputDevice “Keyboard0” “CoreKeyboard”EndSectionSection “InputDevice” # generated from default Identifier “Mouse0” Driver “mouse” Option “Protocol” “auto” Option “Device” “/dev/input/mice” Option “Emulate3Buttons” “no” Option “ZAxisMapping” “4 5″EndSectionSection “InputDevice” Identifier “Keyboard0” Driver “kbd” Option “XkbModel” “pc105” Option “XkbLayout” “us”EndSectionSection “Monitor” Identifier “Monitor0” VendorName “Unknown” ModelName “Unknown” HorizSync 28.0 – 33.0 VertRefresh 43.0 – 72.0 Option “DPMS”EndSectionSection “Device” Identifier “Videocard0” Driver “nvidia”EndSectionSection “Screen” Identifier “Screen0” Device “Videocard0” Monitor “Monitor0” DefaultDepth 24### Option “TwinView” Option “MetaModes” “1280*1024 1280*1024” Option “TwinView Orientation” “RightOf”### SubSection “Display” Viewport 0 0 Depth 24 EndSubSectionEndSection非图形界面搞，然后启动X就行了。(*^__^*)
你可能付出一定的代价，但日后你得到的，远比付出的多得多。
