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Ubuntu利用Xorg.conf配置双屏扩展显示

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Ubuntu利用Xorg.conf配置双屏扩展显示

参考链接：Linux xorg配置双屏幕显示
接了两个显示器，但是有一个因为用了劣质的DVI转VGA的转接头导致系统识别不出显示器的分辨率，然后每次开机都需要重新设置分辨率，很麻烦
NVIDIA X Server Settings有保存当前设置的功能但是不太行，重启之后还是要重新设置
想尽一切办法修改它保存的/etc/X11/xorg.conf文件终于找到了解决方案
关键是在Section “Screen”下面添加如下内容： 

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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，已经有了
Option "TwinView Orientation" "RightOf"-------------估计这是告诉X附加的显示器在右侧。

最后贴一下我完整的内容：

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# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 418.56

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: xconfig, VertRefresh source: xconfig
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "DELL U2414H"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 76.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 960"
EndSection

Section "Screen"

    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-2"
    Option         "TwinView"
    Option         "metamodes" "DP-0: nvidia-auto-select +900+0, DVI-I-0: 1440x900 +0+0 {rotation=right}"
	Option		   "TwinView Orientation" "RightOf" 
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

-------------The End-------------