Nouveau thinks secondary DVI connection is HDMI - monitor blank

[Nick Payne]

Fresh install of 11.10 amd64 on a machine with a dual head nVidia card (shown by lspci as "nVidia Corporation G92 [GeForce GTS 250] rev a2") with twin DVI outputs and a primary 30" monitor and secondary 23" monitor, both connected via DVI. After 11.10 install completed, the right-hand 23" monitor remains blank and in power save, although when I open System Settings / Displays, both monitors appear there with the initial display configuration showing as mirrored displays at 1152x864 resolution. Un-mirroring the displays and setting each display to its native resolution and orientation still has the LH monitor blank. I think the problem is that the 23" monitor is being incorrectly detected as being connected via HDMI, as when I run xrandr in a terminal it shows

===================================================
nick@ubuntu1110:~$ xrandr
Screen 0: minimum 320 x 200, current 3640 x 1920, maximum 8192 x 8192
DVI-I-1 connected 2560x1600+0+0 (normal left inverted right x axis y axis) 641mm x 401mm
   2560x1600 60.0*+
   1920x1440 60.0
   1920x1200 59.9
   1600x1200 60.0
   1280x1024 75.0 60.0
   1280x800 59.8
   1152x864 75.0
   1024x768 75.1 60.0
   800x600 75.0 60.3
   640x480 75.0 60.0
   720x400 70.1
HDMI-1 connected 1080x1920+2560+0 right (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080 60.0*+
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.1 60.0
   800x600 75.0 60.3
   640x480 75.0 60.0
   720x400 70.1
===================================================

The video card does not have any HDMI output at all, just the two DVI outputs.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,grid,vpswitch,mousepoll,move,wall,place,gnomecompat,imgpng,regex,snap,compiztoolbox,resize,session,animation,expo,workarounds,ezoom,staticswitcher,fade,scale]
CompositorRunning: None
Date: Mon Nov 14 14:32:07 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 nVidia Corporation G92 [GeForce GTS 250] [10de:0615] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: nVidia Corporation Device [10de:0592]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
MachineType: System manufacturer System Product Name
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=94d1d51f-68be-488e-b037-37e7b871a7a7 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-nouveau
UpgradeStatus: No upgrade log present (probably fresh install)
XorgConf:
 Section "Device"
 Identifier "n"
 Driver "nouveau"
 EndSection
dmi.bios.date: 09/21/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1408
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6T
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1408:bd09/21/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6T:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[pablomme (pablomme)]

I have a very similar problem with my nvidia G94 (GeForce 9600 GT), only differing in the HDMI issue - xrandr correctly detects the two DVIs. Out of curiosity, does this happen for you with the live CD? In my case a daily image of precise works fine, but both oneiric and precise exhibit the problem once installed. This should mean that it's some minor problem that is preventing the second monitor from working.

[pablomme (pablomme)]

Bug #606001 might be relevant.

[Nick Payne (nick-payne)]

On 18/01/12 05:19, pablomme wrote:
> I have a very similar problem with my nvidia G94 (GeForce 9600 GT), only
> differing in the HDMI issue - xrandr correctly detects the two DVIs. Out
> of curiosity, does this happen for you with the live CD? In my case a
> daily image of precise works fine, but both oneiric and precise exhibit
> the problem once installed. This should mean that it's some minor
> problem that is preventing the second monitor from working.
No, livecd shows the same problem.

[penalvch (penalvch)]

Nick Payne, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-video-nouveau REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Nick Payne (nick-payne)]

I no longer see the problem on Ubuntu 13.10. Both monitors show as DVI connected and both work fine.

[penalvch (penalvch)]

Nick Payne, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/890061/comments/7 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.