Second and third monitor not detected

[Captain Chaos]

Binary package hint: xserver-xorg-video-nouveau

I have two NVIDIA Geforce 8800 GTX cards installed, with one monitor (my main one; a large widescreen monitor placed in the middle) attached to the first card, and two more monitors attached to the second card and placed to the left and right of the main monitor.

Ubuntu only recognizes the main monitor. The other two remain turned off and there is no way to activate them. When I go to System -> Preferences -> Monitors only the main monitor is listed, even after I click on Detect Monitors.

Ubuntu should recognize the other two monitors as well and allow me to use them. Windows Vista has no problem with this. It recognized and used all monitors automatically.

I can't install the NVIDIA proprietary driver to see if the monitors are recognized by that driver because of a bug in jockey (see bug 564909).

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-nouveau 1:0.0.15+git20100219+9b4118d-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Sun Apr 18 13:25:27 2010
DkmsStatus: Error: [Errno 2] No such file or directory
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
MachineType: MSI MS-7346
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=a304b184-f027-43e5-8bd7-f81100176906 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-nouveau
dmi.bios.date: 03/26/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.3
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: MS-7346
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.3:bd03/26/2008:svnMSI:pnMS-7346:pvr1.0:rvnMSI:rnMS-7346:rvr1.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: MS-7346
dmi.product.version: 1.0
dmi.sys.vendor: MSI
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.32-21-generic

[Darren Poulson (daz-22balmoralroad)]

I too have this issue. Twin GeForce 7600GT cards, only the first one is recognised. 4 monitors, two on each card (3 x DVI, 1 x VGA), only the two DVI monitors come on and are recognised in Xorg.0.log. No reference to the other card at all.

Nvidia drivers work fine.