I am running an IBM Thinkpad T43 with an ATI Radeon Mobility X300 and the fglrx driver. I have gotten a cloned desktop to appear on my external monitor, but cannot get an extended desktop, or big desktop.

I've tried running aticonfig, but it didn't give me an extended desktop, only cloned:
Code:
sudo aticonfig --initial=dual-head --dtop=horizontal --screen-layout=left -v
Here is my xorg.conf:
Code:
# 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 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
## Video card - first head (internal)
## Video card - second head (external)

Section "ServerLayout"

	## ...
	Identifier     "Two Screen Layout"
	Screen      0  "Default Screen" 0 0
EndSection

Section "Files"
EndSection

Section "Module"
	Load  "glx"
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	    "HorizEdgeScroll" "0"
EndSection

Section "Monitor"

	## ...
	Identifier   "Generic Monitor"
	Option	    "DPMS"
EndSection

Section "Monitor"

	## ...
	Identifier   "External Monitor"
	Option	    "DPMS"
EndSection

Section "Device"

	## ...
	#Option	    "MonitorLayout" "lvds, auto"
	Identifier  "ATI card 1"
	Driver      "fglrx"
	Option	    "DesktopSetup" "horizontal,reverse"
	Option	    "EnableMonitor" "lvds"
	Option      "ForceMonitors" "lvds, crt1"
	Option	    "FSAAEnable" "on"
	Option	    "OverlayOnCRTC2" "1"
	#Option		"FSAAScale" "4"
	BusID       "PCI:1:0:0"
EndSection

Section "Device"
	Identifier  "ATI card 2"
	Driver      "fglrx"
	BusID       "PCI:1:0:1"
	Option		"UseFBDev" "true"
	Screen      1
EndSection

Section "Screen"
	Identifier "Default Screen"
	Device     "ATI card 1"
	Monitor    "Generic Monitor"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1400x1050" "1024x768" "800x600"
	EndSubSection
EndSection

Section "Screen"
	Identifier "External Screen"
	Device     "ATI card 2"
	Monitor    "External Monitor"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1680x1050" "1024x768" "800x600"
	EndSubSection
EndSection
Can anyone point me in the right direction. I've tried a bunch of how-to's, but can never get dual-monitors to work.

Thanks for any possible help.