I do not have a specific answer for you, but I can post a working xorg.conf from 11.1 32bit and 11.2 64 bit that I use currently. It will not be a drop in solution because your setup will be different than mine. My main monitor is a 22" Samsung LCD and my old 17" CRT sits off to the right side. Remember: just use for example purposes. YMMV
My manually generated and edited xorg.conf
Section “ServerLayout”
Identifier “Layout[all]”
Screen 0 “Screen0” 1152 0
Screen 1 “Screen1” LeftOf “Screen0”
InputDevice “Keyboard0” “CoreKeyboard”
InputDevice “Mouse0” “CorePointer”
Option “AIGLX” “true”
EndSection
Section “Files”
EndSection
Section “Module”
Load “dri”
Load “glx”
Load “dbe”
Load “extmod”
Load “type1”
Load “freetype”
EndSection
Section “ServerFlags”
Option “Xinerama” “0”
EndSection
Section “InputDevice”
# generated from data in “/etc/sysconfig/mouse”
Identifier “Mouse0”
Driver “mouse”
Option “Protocol” “IMPS/2”
Option “Device” “/dev/input/mice”
Option “Emulate3Buttons” “yes”
Option “ZAxisMapping” “4 5”
EndSection
Section “InputDevice”
# generated from default
Identifier “Keyboard0”
Driver “kbd”
EndSection
Section “Monitor”
# HorizSync source: edid, VertRefresh source: edid
Identifier “Monitor0”
VendorName “Unknown”
ModelName “STAC Electronics emachineseView17p”
HorizSync 30.0 - 72.0
VertRefresh 50.0 - 160.0
Option “DPMS” “false”
Option “UseEdidDpi” “false”
Option “Dpi” “96x96”
EndSection
Section “Monitor”
# HorizSync source: edid, VertRefresh source: edid
Identifier “Monitor1”
VendorName “Unknown”
ModelName “Samsung SyncMaster”
Option “DPMS” “false”
Option “UseEdidDpi” “false”
Option “Dpi” “96x96”
EndSection
Section “Device”
Identifier “Device0”
Driver “nvidia”
VendorName “NVIDIA Corporation”
BoardName “GeForce 6600 GT”
Option “Coolbits” “4”
Option “AddARGBGLXVisuals” “true”
EndSection
Section “Screen”
Identifier “Screen1”
Device “Device0”
Monitor “Monitor1”
DefaultDepth 24
Option “AllowGLXWithComposite” “true”
Option “PixmapCacheSize” “1000000”
Option “AllowSHMPixmaps” “0”
Option “TripleBuffer” “true”
Option “OnDemandVBlankInterrupts” “true”
Option “RenderAccel” “true”
Option “TwinView” “1”
Option “TwinViewXineramaInfoOrder” “DFP-0”
Option “metamodes” “CRT: 1152x864 +1680+26, DFP: 1680x1050 +0+0; CRT: NULL, DFP: 1680x1050 +0+0; CRT: 1280x1024 +0+0, DFP: 1280x1024 +1280+0; CRT: 1280x960 +0+0, DFP: 1280x960 +1280+0; CRT: 1152x864 +0+0, DFP: NULL; CRT: 1024x768 +0+0, DFP: 1024x768 +1024+0; CRT: 800x600 +0+0, DFP: 800x600 +800+0; CRT: 640x480 +0+0, DFP: 640x480 +640+0; CRT: NULL, DFP: 1400x1050 +0+0”
SubSection “Display”
Depth 24
EndSubSection
EndSection
Section “Screen”
Identifier “Screen0”
Device “Device0”
Monitor “Monitor0”
DefaultDepth 24
Option “AllowGLXWithComposite” “true”
Option “PixmapCacheSize” “1000000”
Option “AllowSHMPixmaps” “0”
Option “TripleBuffer” “true”
Option “OnDemandVBlankInterrupts” “true”
Option “RenderAccel” “true”
Option “TwinView” “1”
Option “TwinViewXineramaInfoOrder” “DFP-0”
Option “metamodes” “CRT: 1152x864 +1680+26, DFP: 1680x1050 +0+0; CRT: NULL, DFP: 1680x1050 +0+0; CRT: 1280x1024 +0+0, DFP: 1280x1024 +1280+0; CRT: 1280x960 +0+0, DFP: 1280x960 +1280+0; CRT: 1152x864 +0+0, DFP: NULL; CRT: 1024x768 +0+0, DFP: 1024x768 +1024+0; CRT: 800x600 +0+0, DFP: 800x600 +800+0; CRT: 640x480 +0+0, DFP: 640x480 +640+0; CRT: NULL, DFP: 1400x1050 +0+0”
SubSection “Display”
Depth 24
EndSubSection
EndSection
Section “Extensions”
Option “DAMAGE” “Enable”
Option “Composite” “Enable”
Option “RENDER” “Enable”
EndSection
