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Thread: nvidia - This driver is activated but not currently in use (compiz fails)

  1. #1
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    Dec 2005
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    compiz (core) - Fatal: Couldn't open display

    I have a geforce 8400GS and nvidia-current installed.

    However, the Additional Drivers app advises that "No proprietary drivers are in use on this system" and that the driver is activated but not in use.

    I know other people have complained about this problem, but for me this is breaking 3D content and I can't get compiz to work either.

    When I try to start compiz manually (compiz --replace), I get this error:
    Code:
    compiz (code) - Fatal: Couldn't open display
    My Xorg has nvidia as device driver.

    I'm using the NVIDIA X Server settings program to setup my two monitors, so I know that this is what is in use.

    In addition to the compiz problem (which I can get over), sometimes I can see the desktop background through the active window. It's hard to explain so I'll take a screenshot when it happens again.

    Things I've tried:

    1. Installing nvidia's latest drivers - The installer was extremely picky, constantly complaining about other modules and drivers. After I finally managed to remove everything it didn't like and install it, X wouldn't load.

    2. Reinstall nvidia-current - tried multiple times with no change.

    3. Link /usr/lib/xorg/modules/extensions/libglx.so to /usr/lib/nvidia-current/xorg/libglx.so.270.41.06 - didn't make a difference.

    Any suggestions would be very welcome.

    Thanks!
    Last edited by Laen; August 25th, 2011 at 08:24 PM.

  2. #2
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    Kubuntu 11.04 Natty Narwhal

    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    You should have a look at your Xorg.0.log....
    Best app ever: Easystroke

  3. #3
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    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    Unfortunately there's no errors there.

    I think to enable compiz you have to find "Desktop effects" in System -> Preferences, but there's no such thing there.
    It's also missing from the Appearance applet.

  4. #4
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    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    Do you use xinerama?
    Best app ever: Easystroke

  5. #5
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    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    Did use it before, but disabled it to see if it does anything.
    I think it did make a difference because I can now see the 3D screensavers (GLCells, GLMatrix, etc) which would only show a blank screen before!

    I'm using TwinView.

    Link to the generated xorg.conf:
    http://pastebin.com/N4DXNzuB


    Thanks for trying to help!

  6. #6
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    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    maybe you should test adding a virtual resolution...
    Best app ever: Easystroke

  7. #7
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    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    Also your xorg.conf seems to be a little messed up due to formerly using
    xinerama.Afaik you do not need 2 device or screen sections for twinview,only 2 monitor sections.Would run nvidia-xconfig to create vanilla...
    Best app ever: Easystroke

  8. #8
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    Re: nvidia - This driver is activated but not currently in use (compiz fails)

    Quote Originally Posted by realzippy View Post
    Also your xorg.conf seems to be a little messed up due to formerly using
    xinerama.Afaik you do not need 2 device or screen sections for twinview,only 2 monitor sections.Would run nvidia-xconfig to create vanilla...
    You're right about it being messed up. The nvidia app was merging changes to the xorg.conf by default instead of wiping it.

    Cleaned it up and figured out my problem with compiz.

    It couldn't start because the $DISPLAY var was not set since I was trying to run it from terminal...
    Why it didn't start with Gnome I'm not sure.

    That said, using xinerama was throwing me off and causing problems with the opengl screensavers.

    It ended up not having anything to do with the nvidia driver not being in use message.
    That seems like a bug which doesn't affect me at this point.

    Thanks for your input, realzippy!
    I'm pretty sure the cleaner xorg.conf and compiz will prevent that other annoying problem I was having with the background bleeding through the active window.

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