6 Monitors - Ubuntu 8.04 - Compiz Fusion - XGL NVIDIA Working! (Video Included)

[bigswagg]

Thanks d2globalinc, your post was very helpful. I managed to get my dualmonitor setup up and running. I have seperate x screens with xinerama enabled and one of the monitors rotated at 90 degrees. Desktop effects and xinerama working just fine... now just one little problem... when i expand a window to full size it slightly goes across my rotated monitor.. how can i have it so that when i expand a window it only expands on selected monitor.. any suggestions? Thanks in advance!

Here is a Screenshot: http://i55.tinypic.com/rh25pw.png

& here is a copy of my xorg.conf

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 275.21  (buildmeister@swio-display-x86-rhel47-02.nvidia.com)  Mon Jul 18 15:01:50 PDT 2011

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

Section "Files"
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      "ViewSonic VA2431 Series"
    HorizSync       24.0 - 82.0
    VertRefresh     50.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "DELL IN1910N"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8400 GS"
    BusID          "PCI:2:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8400 GS"
    BusID          "PCI:2:0:0"
    Screen          1
EndSection

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

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

[oakdog8]

MULTIPLE NVIDIA CARDS WORKING WITHOUT XINERAMA!

To those looking to set up multiple nVidia graphics cards in 11.10, I have achieved the elusive 3D success! I am bumping this thread because it always lands in the top search results on Google when looking for help setting up a single desktop across multiple nVidia cards.

The trick is in the newest nVidia driver (released in July 2011). There is a new option called "basemosaic" that will act like twinview across cards. AFAIK this is new to the latest driver, so there is no option for it in the nvidia control panel yet. This mode acts as a sort of TwinView for multiple cards. It would seem that as of yet, it's pretty poorly documented since it took forever to find out this option even existed.

I now have full hardware acceleration and a single desktop across 3 monitors on 2 GTS 450s without Xinerama. I have posted the steps I took and my full xorg.conf here: http://www.rubberplate.net/blog/?p=31

I hope this works for everyone else that's still searching for a solution!

[shock32638]

Hey all, I've got four monitors on two nVidia GeForce GTS 450's. The best configuration I've been able to come up with is using Xinerama and four separate x screens (no TwinView), but that doesn't allow GL or Compiz.

The alternative seems to be two separate X screens with no xinerama and twinview each pair of monitors. That gives me 3d but then windows are stuck on one of the two x screens.

Any new developments on this or am I stuck? =/

If you have 2 identical Nvidia cards, you should be able to get basemosaic running. This guy did.
http://www.rubberplate.net/blog/?p=31

I'm still attempting to find a solution that would let me use 6 monitors (DVI) that would cost me < 200-300$
The way I see it my only choices are
1. Eyefinity with 6 active DP->DVI adaptors. (~800$)
2. A video card capable of 5040x1050 and 2 triple head2Go's (~800$)

Anybody know if basemosaic works with more than 2 cards?