Ubuntu 10.04無法進入xwindow? - Linux

昨天用更新管理員更新之後就無法進入xwindow
在登入畫面之前螢幕就變成一片黑
用修復模式的failsave重新啟動才能進入
請問是哪裡出了問題呢？謝謝！

xorg.conf 檔案
Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
Screen "amdcccle-Screen[1]-1" 1280 0
EndSection

Section "Module"
EndSection

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

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Monitor"
Identifier "0-LVDS"
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" "1440x900"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

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

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

Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-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

--