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Old 10-05-2011, 10:42 AM   #1
geomcd1949
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Registered: Oct 2011
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Can't use dual monitors


Am using Ubuntu 11.04 with a GeForce 8400 GS 1GB video card.

I hook up an hdtv with an HDMI cable to the video card and an HP monitor with a VGA cable.

When I start the computer, only the hdtv screen is active.

Under Systems Settings > Detect Monitors, only one monitor is detected.

When I connect only the HP monitor with a VGA cable, that monitor is active.

This may be important: When I go to Additional Drivers, it tells me that No Proprietary Drivers are in use on this system. It lists the NVIDIA accelerated graphics driver. It tells me that "This driver is activated but not currently in use."

I'm not sure what the words mean, "activated but not currently in use," and wonder if this situation has something to do with the failure of the system to detect both monitors that are connected.

Thanks for any assistance and guidance.

~George
 
Old 10-05-2011, 01:41 PM   #2
rahulkya
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There is a good applet named as jupiter.
It has helped me a lot..Try it and see if it can help you..
for me 11.04 is very buggy...I have tried 11.10 it was pretty cool even in beta versions...
 
Old 10-05-2011, 01:41 PM   #3
corp769
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Hello,

This may be a BIOS issue; Can you look in your BIOS settings before we further troubleshoot this? Look around for a possible option that when you plug up to a monitor, that it doesn't disable your other graphic configuration.

Cheers,

Josh
 
Old 10-05-2011, 06:31 PM   #4
geomcd1949
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Josh,

Thanks. - I see nothing in the BIOS that even resembles an option on the graphics configuration. But I haven't often looked in BIOS. Is there something specific I should look for?

~George
 
Old 10-05-2011, 07:33 PM   #5
geomcd1949
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This problem is an OS bug listed on Launchpad, Bug #858046.

When I disable the NVIDIA driver, and restart, both monitors are detected, and the same screen appears on both, whether "Same image in all monitors" is checked or unchecked.

Also, on restart, it told me I didn't have the resources to run Unity, and now gives the classic desktop.

Thank you Josh and Rahulkya!

~George
 
Old 10-05-2011, 07:44 PM   #6
cascade9
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"This driver is activated but not currently in use." is common problem with 11.04. There is a few causes, and a few solutions.

Try running this comamnd then posting the output (in 'code' tags please)-

cat /var/log/Xorg.0.log | grep nvidia

*edit- if you actually are running the nvidia drivers, then you should be able to use nvidia-settings to get the 2nd display. If you werent actually running the nVidia drivers, you should have booted into 'classic gnome' from the 1st boot.

Last edited by cascade9; 10-05-2011 at 07:47 PM.
 
Old 10-05-2011, 08:52 PM   #7
geomcd1949
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Code:
$ cat /var/log/Xorg.0.log | grep nvidia
[    15.677] (==) Matched nvidia as autoconfigured driver 0
[    15.677] (II) LoadModule: "nvidia"
[    15.678] (WW) Warning, couldn't open module nvidia
[    15.678] (II) UnloadModule: "nvidia"
[    15.678] (II) Unloading nvidia
[    15.678] (EE) Failed to load module "nvidia" (module does not exist,
0)
The above is the output with the NVIDIA driver removed.

The output below is with the NVIDIA driver "activated but not currently in use."

Code:
$ cat /var/log/Xorg.0.log | grep nvidia
[    18.255] (==) Matched nvidia as autoconfigured driver 0
[    18.255] (II) LoadModule: "nvidia"
[    18.255] (II) Loading /usr/lib/xorg/extra-modules/nvidia_drv.so
[    18.256] (II) Module nvidia: vendor="NVIDIA Corporation"
[    18.281] (II) Loading /usr/lib/xorg/extra-modules/nvidia_drv.so
[    18.856] (==) NVIDIA(0): No modes were requested; the default mode
"nvidia-auto-select"
[    18.856] (II) NVIDIA(0):     "nvidia-auto-select"
[    18.897] (II) NVIDIA(0): Setting mode "nvidia-auto-select"
-When I restarted after re-activating the driver, the Unity desktop returned.

Hope this helps. Thanks.

~George
 
Old 10-07-2011, 04:46 AM   #8
cascade9
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Looks like the drive is loading and working at least well enough for unity to run. I dont know much about how to fix the "This driver is activated but not currently in use" problem, you'd do just as well to use a search engine as anything I could suggest. Sorry.

I'd probably try nvidia-settings (sudo apt-get install nvidia-settings if its not installed), the nvidia control panel lets you setup dual monitors. Hopefully the drivers work well enough for nvidia-settings to run.....
 
  


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