fglrx driver, enable monitor failed in feisty

Hi dude:
I have installed the fglrx driver and beryl in feisty and got problem when I tried to enable another monitor

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aticonfig --enable-monitor auto
ati_dm: FGLRX_EnableDisplays failed when try to enable display: ffffffff.
Using /etc/X11/xorg.conf
Saved back-up to /etc/X11/xorg.conf.fglrx-1
aticonfig: Writing to '/etc/X11/xorg.conf' failed. Bad file descriptor.
===============================================

I query the monitor in my laptop.
aticonfig --query-monitor
Connected monitors: none
Enabled monitors: none

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fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: MOBILITY RADEON X300
OpenGL version string: 2.0.6334 (8.34.8)

my xorg.conf
===============================
# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf(5) manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
 Identifier "Default Layout"
 Screen "Default Screen" 0 0
 InputDevice "Generic Keyboard"
 InputDevice "Configured Mouse"
 InputDevice "stylus" "SendCoreEvents"
 InputDevice "cursor" "SendCoreEvents"
 InputDevice "eraser" "SendCoreEvents"
 InputDevice "Synaptics Touchpad"
EndSection

Section "Files"

 # path to defoma fonts
 FontPath "/usr/share/fonts/X11/misc"
 FontPath "/usr/share/fonts/X11/cyrillic"
 FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
 FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
 FontPath "/usr/share/fonts/X11/Type1"
 FontPath "/usr/share/fonts/X11/100dpi"
 FontPath "/usr/share/fonts/X11/75dpi"
 FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
 Load "i2c"
 Load "bitmap"
 Load "ddc"
 Load "dri"
 Load "extmod"
 Load "freetype"
 Load "glx"
 Load "int10"
 Load "vbe"
EndSection

Section "InputDevice"
 Identifier "Generic Keyboard"
 Driver "kbd"
 Option "CoreKeyboard"
 Option "XkbRules" "xorg"
 Option "XkbModel" "pc105"
 Option "XkbLayout" "us"
EndSection

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

Section "InputDevice"
 Identifier "Synaptics Touchpad"
 Driver "synaptics"
 Option "SendCoreEvents" "true"
 Option "Device" "/dev/psaux"
 Option "Protocol" "auto-dev"
 Option "HorizScrollDelta" "0"
EndSection

Section "InputDevice"
 Identifier "stylus"
 Driver "wacom"
 Option "Device" "/dev/input/wacom"
 Option "Type" "stylus"
 Option "ForceDevice" "ISDV4"# Tablet PC ONLY
EndSection

Section "InputDevice"
 Identifier "eraser"
 Driver "wacom"
 Option "Device" "/dev/input/wacom"
 Option "Type" "eraser"
 Option "ForceDevice" "ISDV4"# Tablet PC ONLY
EndSection

Section "InputDevice"
 Identifier "cursor"
 Driver "wacom"
 Option "Device" "/dev/input/wacom"
 Option "Type" "cursor"
 Option "ForceDevice" "ISDV4"# Tablet PC ONLY
EndSection

Section "Monitor"
 Identifier "Generic Monitor"
 Option "DPMS"
EndSection

Section "Device"
 Identifier "ATI Technologies Inc M22 [Radeon Mobility M300]"
 Driver "fglrx"
 Option "VideoOverlay" "on"
 Option "OpenGLOverlay" "off"
 BusID "PCI:1:0:0"
EndSection

Section "Screen"
 Identifier "Default Screen"
 Device "ATI Technologies Inc M22 [Radeon Mobility M300]"
 Monitor "Generic Monitor"
 DefaultDepth 24
 SubSection "Display"
  Depth 1
  Modes "1400x1050"
 EndSubSection
 SubSection "Display"
  Depth 4
  Modes "1400x1050"
 EndSubSection
 SubSection "Display"
  Depth 8
  Modes "1400x1050"
 EndSubSection
 SubSection "Display"
  Depth 15
  Modes "1400x1050"
 EndSubSection
 SubSection "Display"
  Depth 16
  Modes "1400x1050"
 EndSubSection
 SubSection "Display"
  Depth 24
  Modes "1400x1050"
 EndSubSection
EndSection

Section "DRI"
 Mode 0666
EndSection

Section "Extensions"
 Option "Composite" "Disable"
EndSection