先看一個完整的xorg.conf文件，如下：
復制代碼 代碼如下:
# /.../
# SaX generated X11 config file
# Created on: 2009-05-31T19:02:32+0800.
#
# Version: 8.1
# Contact: Marcus Schaefer <sax@suse.de>, 2005
# Contact: SaX-User list <https://lists.berlios.de/mailman/listinfo/sax-users>
#
# Automatically generated by [ISaX] (8.1)
# PLEASE DO NOT EDIT THIS FILE!
#
Section "Files"
FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/local"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/URW"
FontPath "/usr/share/fonts/Speedo"
FontPath "/usr/share/fonts/PEX"
FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/share/fonts/latin2/misc:unscaled"
FontPath "/usr/share/fonts/latin2/75dpi:unscaled"
FontPath "/usr/share/fonts/latin2/100dpi:unscaled"
FontPath "/usr/share/fonts/latin2/Type1"
FontPath "/usr/share/fonts/latin7/75dpi:unscaled"
FontPath "/usr/share/fonts/baekmuk:unscaled"
FontPath "/usr/share/fonts/japanese:unscaled"
FontPath "/usr/share/fonts/kwintv"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/uni:unscaled"
FontPath "/usr/share/fonts/CID"
FontPath "/usr/share/fonts/ucs/misc:unscaled"
FontPath "/usr/share/fonts/ucs/75dpi:unscaled"
FontPath "/usr/share/fonts/ucs/100dpi:unscaled"
FontPath "/usr/share/fonts/hellas/misc:unscaled"
FontPath "/usr/share/fonts/hellas/75dpi:unscaled"
FontPath "/usr/share/fonts/hellas/100dpi:unscaled"
FontPath "/usr/share/fonts/hellas/Type1"
FontPath "/usr/share/fonts/misc/sgi:unscaled"
FontPath "/usr/share/fonts/xtest"
FontPath "/opt/kde3/share/fonts"
FontPath "unix/:7100"
InputDevices "/dev/gpmdata"
InputDevices "/dev/input/mice"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "on"
EndSection
Section "Module"
Load "extmod"
Load "type1"
Load "glx"
Load "freetype"
Load "dbe"
Load "v4l"
EndSection
Section "InputDevice"
Driver "kbd"
Identifier "Keyboard[0]"
Option "Protocol" "Standard"
Option "XkbLayout" "us"
Option "XkbModel" "pc104"
Option "XkbRules" "xfree86"
EndSection
Section "InputDevice"
Driver "mouse"
Identifier "Mouse[1]"
Option "Buttons" "5"
Option "Device" "/dev/input/mice"
Option "Name" "ImPS/2 Generic Wheel Mouse"
Option "Protocol" "explorerps/2"
Option "Vendor" "Sysp"
Option "ZAxisMapping" "4 5"
EndSection
Section "Monitor"
DisplaySize 305 230
HorizSync 29-35
Identifier "Monitor[0]"
ModelName "800X600@56HZ"
VendorName "--> VESA"
VertRefresh 50-60
UseModes "Modes[0]"
EndSection
Section "Modes"
Identifier "Modes[0]"
Modeline "800x600" 35.55 800 832 912 1024 600 601 604 620
Modeline "768x576" 33.74 768 792 872 976 576 577 580 596
Modeline "640x480" 23.86 640 656 720 800 480 481 484 497
EndSection
Section "Screen"
DefaultDepth 16
SubSection "Display"
Depth 15
Modes "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "800x600" "768x576" "640x480"
EndSubSection
Device "Device[0]"
Identifier "Screen[0]"
Monitor "Monitor[0]"
EndSection
Section "Device"
BoardName "VMWARE0405"
BusID "0:15:0"
Driver "vmware"
Identifier "Device[0]"
Screen 0
VendorName "VMWare Inc"
EndSection
Section "ServerLayout"
Identifier "Layout[all]"
InputDevice "Keyboard[0]" "CoreKeyboard"
InputDevice "Mouse[1]" "CorePointer"
Option "Clone" "off"
Option "Xinerama" "off"
Screen "Screen[0]"
EndSection
Section "DRI"
Group "video"
Mode 0660
EndSection
Section "Extensions"
EndSection
通過上述代碼會發現xorg.conf文件由
Section "xxxx"
.........
EndSection對組成.下面我們主要解釋一下每個節點的含義。
一、輸入設備--鍵盤
復制代碼 代碼如下:
Section "InputDevice"
Driver "kbd"
Identifier "Keyboard[0]"
Option "Protocol" "Standard"
Option "XkbLayout" "us"
Option "XkbModel" "pc104"
Option "XkbRules" "xfree86"
EndSection
二、輸入設備--鼠標
復制代碼 代碼如下:
Section "InputDevice"
Driver "mouse"
Identifier "Mouse[1]"
Option "Buttons" "5"
Option "Device" "/dev/input/mice"
Option "Name" "ImPS/2 Generic Wheel Mouse"
Option "Protocol" "explorerps/2"
Option "Vendor" "Sysp"
Option "ZAxisMapping" "4 5"
EndSection
三、顯示器
復制代碼 代碼如下:
Section "Monitor"
DisplaySize 305 230
HorizSync 29-35
Identifier "Monitor[0]"
ModelName "800X600@56HZ"
VendorName "--> VESA"
VertRefresh 50-60
UseModes "Modes[0]"
EndSection
其中，
Identifier：顯示器的惟一名稱。在這些名稱后面都會加上一個數字，而第一個顯示器的代表數字為0（Monitor[0]）。VendorName：顯示器制造商名稱。
ModelName：顯示器類型名稱。
HorizSync：與顯示器兼容的水平刷新頻率范圍，其單位為kHz。這個設置值會同時指出是否在此顯示器中使用特定的Modeline值。
四、顯卡
復制代碼 代碼如下:
Section "Device"
BoardName "VMWARE0405"
BusID "0:15:0"
Driver "vmware"
Identifier "Device[0]"
Screen 0
VendorName "VMWare Inc"
EndSection
五、Screen
一個顯示器和一個顯卡組成一個screen，用Section "Screen"描述，如：
復制代碼 代碼如下:
Section "Screen"
DefaultDepth 16
SubSection "Display"
Depth 15
Modes "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "800x600" "768x576" "640x480"
EndSubSection
Device "Device[0]"
Identifier "Screen[0]"
Monitor "Monitor[0]"
EndSection
其中
Identifier：定義一個“Screen”名稱，以便在“ServerLayout”Section中進行參照。 Device：指定“Device”Section中的名稱。
Monitor：指定“Monitor”Section中的名稱。
DefaultDepth：默認的色深（Color Depth）位數。
Modes "800x600" "768x576" "640x480" 表示系統會默認先按照800x600的分辨率去適配，如果適配失敗，則選擇768x576的分辨率繼續。
六、Modes
復制代碼 代碼如下:
Section "Modes"
Identifier "Modes[0]"
Modeline "800x600" 35.55 800 832 912 1024 600 601 604 620
Modeline "768x576" 33.74 768 792 872 976 576 577 580 596
Modeline "640x480" 23.86 640 656 720 800 480 481 484 497
EndSection
和screen章節中的Modes對應。七、ServerLayout
復制代碼 代碼如下:
Section "ServerLayout"
Identifier "Layout[all]"
InputDevice "Keyboard[0]" "CoreKeyboard"
InputDevice "Mouse[1]" "CorePointer"
Option "Clone" "off"
Option "Xinerama" "off"
Screen "Screen[0]"
EndSection
ServerLayout”Section主要用于建立X Server啟動時的外觀，其中：Identifier：此ServerLayout Section的惟一名稱。
Screen：“Screen”Section指定的名稱
InputDevice：在X Server中的“InputDevice”Section名稱。通常在此僅有兩行設置，即Mouse[0]和Keyboard[0]，也就是系統中的第一個鼠標和鍵盤，而其他的設備大多可以忽略。
