[请问]扩展显示器的问题

我的机器是thinkpad T400，是Ati的显卡（用的是闭源的驱动）。

现在，由于tex和对文稿的问题，一个屏幕显示不开。如何配置2个屏幕呀？

也就是新加一个显示器是现有显示器的扩展。

我加了个显示器，结果另一个显示器只是当前显示器内容的重复。

如果可以的话，能否告诉我如何配置？最好是step by step的。

谢谢！

http://www.linuxsir.org/bbs/thread351837.html

参考：
http://www.thinkwiki.org/wiki/Xorg_RandR_1.2

* x11-apps/xrandr
Latest version available: 1.3.2
Latest version installed: 1.3.2
Size of files: 126 kB
Homepage: http://xorg.freedesktop.org/
Description: primitive command line interface to RandR extension
License: MIT

接上显示器，打开电源
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 2048 x 2048
LCD connected 1280x800+0+0 (normal left inverted right x axis y axis) 303mm x 190mm
1280x800 60.0*+ 50.0
1280x768 59.9 +
1280x720 60.0 + 50.0
1024x768 60.0 +
800x600 60.3 +
720x480 60.0 +
640x480 60.0 +
640x400 59.9 +
512x384 60.0 +
400x300 60.7 +
320x240 60.0 +
320x200 60.1 +
DFP1 disconnected (normal left inverted right x axis y axis)
CRT1 connected (normal left inverted right x axis y axis)
1024x768 60.0 + 75.0 70.1
800x600 85.1 72.2 75.0 70.0 60.3 56.2
720x480 60.0
640x480 85.0 75.0 72.8 60.0
640x400 75.1 59.9
512x384 60.0 74.9
400x300 75.0 60.7
320x240 75.6 60.0
320x200 75.5 60.1

可以了，不过不知道为什么，菜单条跑到右边下面了，郁闷

上面的还有个问题，好像一进系统配置的就有问题。
试验一下ati配置
重起一下系统。
好像可以，不过，好像状态条又跑到右边下面了。并且看了一下，需要重启，是因为修改了xorg.conf?我不喜欢这样.

原来的xorg.conf 内容：
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Device"
Identifier "Card0"
#Driver "radeon"
Driver "fglrx"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"

#DRI does not work above 2048x2048 for pre-965
#intel cards. Size is determined by xorg when
#X is launched such that monitor resolutions fit.
#Virtual 2048 2048
# to support dual display, the other one si 1024*768
Viewport 0 0
Virtual 2304 800
Depth 24
EndSubSection
EndSection

Section "DRI"
Mode 0666
EndSection

被修改后的是：
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "amdcccle-Screen[1]-0" 1280 0
Screen "amdcccle-Screen[1]-1" 0 0
EndSection

Section "Files"
FontPath "/usr/share/fonts/winxp"
EndSection

Section "Module"
EndSection

Section "ServerFlags"
Option "Xinerama" "on"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "0-LCD"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1280x800"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Monitor"
Identifier "0-CRT1"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1024x768"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Device"

#Driver "radeon"
Identifier "Card0"
Driver "fglrx"
EndSection

Section "Device"
Identifier "amdcccle-Device[1]-0"
Driver "fglrx"
Option "Monitor-CRT1" "0-CRT1"
BusID "PCI:1:0:0"
EndSection

Section "Device"
Identifier "amdcccle-Device[1]-1"
Driver "fglrx"
Option "Monitor-LCD" "0-LCD"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"

#DRI does not work above 2048x2048 for pre-965
#intel cards. Size is determined by xorg when
#X is launched such that monitor resolutions fit.
#Virtual 2048 2048
# to support dual display, the other one si 1024*768
Viewport 0 0
Virtual 2304 800
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "amdcccle-Screen[1]-0"
Device "amdcccle-Device[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "amdcccle-Screen[1]-1"
Device "amdcccle-Device[1]-1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "DRI"
Mode 0666
EndSection

闭源驱动很好办，用aaa*把bigdesktop打开就可以设置了。 无需xrandr

能否说详细点？是什么命令？谢谢！我又修改了上面的贴子

已经好久没用官方驱动了，记得不是很详细。
1. 连接好多台显示器
2. 开启amdcccle，并设置好bigdesktop中分辨率等
3. 重启X，ok