Worked on FC4 but no go with FC5. I've looked all over the web and read the man page cover to cover so to speak. Many so called working xorg.conf posts don't work for me with FC5. I get the left screen working no matter what I play with but no right screen. I removed the system included path to the rgb db as the file and half the tree didn't exist. The man page says it isn't required. Here is my xorg.conf:
Section "ServerLayout"
Identifier "Multihead layout"
Screen "Screen0"
Screen "Screen1" LeftOf "Screen0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "on"
Option "Clone" "off"
EndSection
Section "Files"
FontPath "unix/:7100"
EndSection
Section "Module"
Load "dbe"
Load "extmod"
Load "fbdevhw"
Load "glx"
Load "record"
Load "freetype"
Load "type1"
Load "dri"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "yes"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "LG"
ModelName "L1810B"
HorizSync 30.0 - 80.0
VertRefresh 50.0 - 75.0
Option "dpms"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "LG"
ModelName "L1810B"
HorizSync 30.0 - 80.0
VertRefresh 50.0 - 75.0
Option "dpms"
EndSection
Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "nVidia"
BoardName "NVIDIA GeForce FX5900XT"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "Videocard1"
Driver "nv"
VendorName "Videocard Vendor"
BoardName "nVidia Corporation NV35 [GeForce FX 5900XT]"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x400"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x400"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection