I tried to set up two monitors on my Quadro 4 900 XGL video because it is dual head. FC2 did not like that. I removed the second monitor and put the xorg.conf file back like you see it below.

What other config files in FC2 do I need to make changes in to get X to work again?

X worked fine until I tried the dual monitor thing.

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1280x1024"
HorizSync 31.5 - 67.0
VertRefresh 50.0 - 75.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nv"
VendorName "Videocard vendor"
BoardName "NVIDIA Quadro 4 (generic)"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

I found the answer to my question. I needed to also change the configuration in the server layout section of the xorg.conf file.

Does any one have a successful experience setting up FC2 and NVidia Quadro 4 900 XGL in a dual head configuration? FC2 does not seem to understand the dual head capability of this card.