My dual monitors work in the fact I can maximize applications to both screens and drag them from one to another. So working in gnome works with no problem. But if I use an application like Tux Racer where it uses true full screen it splits between both monitors. Any idea how to tweak this to open to a single monitor? I have a dual head geforce 5200.

lspci:
01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)

xorg.conf:

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "DELL E172FP"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.0 - 80.0
VertRefresh 56.0 - 75.0
Option "DPMS"
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "DELL E172FP"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.0 - 80.0
VertRefresh 56.0 - 75.0
Option "DPMS"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce FX 5200"
EndSection

Section "Device"
Identifier "Videocard1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce FX 5200"
EndSection

Section "Screen"

# Removed Option "metamodes" "CRT-0: 1280x1024 +0+0, CRT-1: nvidia-auto-select +1280+0"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "1"
Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "metamodes" "CRT-0: 1280x1024 +0+0, CRT-1: 1280x1024 +1280+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinView" "1"
Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "metamodes" "CRT-0: 1280x1024 +0+0, CRT-1: nvidia-auto-select +1280+0"
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

I've found the only way to get everything working properply was not to use TwinView but Xinerama. My setup is tripple headed but with two screen it would look something like this...

I finally got it working the way I want it to. I actually shortened up my config. But what really did it was the MetaModes by putting in some NULL statements.

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "DELL E172FP"
HorizSync 31.5 - 79.0
VertRefresh 50.0 - 70.0
Option "DPMS"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce FX 5200"
Option "TwinView" "true"
Option "MetaModes" "DFP-0: 1280x1024, DFP-1: 1280x1024; DFP-0: 1280x1024, DFP-1: NULL; DFP-0: NULL, DFP-1: 1280x1024"
Option "TwinViewOrientation" "RightOf"
Option "SecondMonitorHorizSync" "31.5-79.0"
Option "SecondMonitorVertRefresh" "50.0-70.0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
EndSection

I've also found an easy way to let X use 2 screens, be able to maximize to just one of the monitors, and still drag windows around both windows.

Just follow these steps:

1. Open nvidia-settings as root
2. Configure the second monitor as 'Seperate X screen'
3. Click the 'Save to X Configuration File'
4. Configure the second monitor as 'TwinView'
5. Click the 'Save to X Configuration File' and 'Apply'

You might have to reboot, but the settings in the xorg.conf file are now ok. This is because the NVidia settings tool creates an extra entry for the second monitor for step 2, and does not remove it for step 4...

Not really needed for this thread anymore, but it might be helpful for someone ;-)