3rd monitor help

[Zaid]

Been looking around and have been trying for 4 days to get my 3 monitors to work with my 2 video cards , looking for any help.

When the system starts up I get the bootup screens on the 3rd monitor , then the login box shows up on the 1st monitor and when logging out I see the shutdown screen on the 3rd monitor again , so I know ubuntu see's it , but not sure how to include it in the regular desktop . It's just a lighted very dark red and I can't move my mouse or any windows over to it , here is my xorg.conf that I modified and tried to get it to work with :

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 260.19.06 (buildd@palmer) Mon Oct 4 16:01:38 UTC 2010

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
Screen 2 "Screen2" RightOf "Screen1"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "1"
EndSection

Section "Files"
EndSection

Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
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 "DELL 1907FP"
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 76.0
Option "DPMS"
EndSection

Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor1"
VendorName "Unknown"
ModelName "DELL 1907FP"
HorizSync 31.0 - 83.0
VertRefresh 56.0 - 76.0
Option "DPMS"
EndSection

Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor2"
VendorName "Unknown"
ModelName "DELL 1907FP"
HorizSync 32.0 - 85.0
VertRefresh 56.0 - 76.0
Option "DPMS"
EndSection


Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7600 GS"
BusID "PCI:2:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7600 GS"
BusID "PCI:2:0:0"
Screen 1
EndSection

Section "Device"
Identifier "Device2"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 8400 GS"
BusID "PCI:a:0:0"
Screen 2
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "CRT: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "DFP: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen2"
Device "Device2"
Monitor "Monitor2"
DefaultDepth 24
Option "Separate" "0"
Option "metamodes" "DFP: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Zaid is offline Report Post Edit/Delete Message

[Krytarik]

I don't see any significant errors, except for this option (Screen2):

Option "Separate" "0"What does it mean? Try to replace it with the TwinView option instead, exactly like in the other screen sections.

[Zaid]

I replaced it with TwinView and it did nothing , :(

[Krytarik]

You haven't specified any display modes. And try setting Xinerama at "on" instead of "1".
https://help.ubuntu.com/community/XineramaHowTo

I'm also curious what happens if you disable Xinerama at all.

To make it absolutely clear: After you logged in only the first two screen are active, right?

[Zaid]

Yeah the first 2 are on it seems after ubuntu finishes starting up and yeah I probably have to specfify it and stuff, will try that when I get homne today.

[b89.smith]

I have the same problem with trying to run a 3rd monitor. 2 monitors work fine. If anyone can figure this out I would really appreciate it.