startx进不了图形界面，gdm可以进.

这是怎么回事？
config:
Section "Files"
FontPath "unix/:7100" # local font server
# if the local font server has problems, we can fall back on these
FontPath "/usr/lib/X11/fonts/truetype/sim"
FontPath "/usr/lib/X11/fonts/misc"
FontPath "/usr/lib/X11/fonts/cyrillic"
FontPath "/usr/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/75dpi/:unscaled"
#FontPath "/usr/lib/X11/fonts/Type1"
#FontPath "/usr/lib/X11/fonts/truetype"
FontPath "/usr/lib/X11/fonts/Speedo"
FontPath "/usr/lib/X11/fonts/100dpi"
FontPath "/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
Load "xtt"
Load "dbe"
Load "dri"
Load "extmod"
Load "glx"
Load "int10"
Load "record"
Load "speedo"
#Load "type1"
#Load "xtt"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xfree86"
Option "XkbModel" "pc104"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/psaux"
Option "Protocol" "PS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
Identifier "Generic Mouse"
Driver "mouse"
Option "SendCoreEvents" "true"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection

Section "Device"
Identifier "nvidia"
Driver "nv"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
HorizSync 30-54
VertRefresh 50-85
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "nvidia"
Monitor "Generic Monitor"
DefaultDepth 16
SubSection "Display"
Depth 1
Modes "800x600"
EndSubSection
SubSection "Display"
Depth 4
Modes "800x600"
EndSubSection
SubSection "Display"
Depth 8
Modes "800x600"
EndSubSection
SubSection "Display"
Depth 15
Modes "800x600"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600"
EndSubSection
SubSection "Display"
Depth 24
Modes "800x600"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "Generic Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

what's the prompt of startx?

重新安装以下xservers呢

dpkg-reconfigure xserver-xfree86
尽量用系统自动探测和默认值~~