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Thread: Nvidia proprietary driver doesn't work (GeForce GT 640)

  1. #11
    Join Date
    Dec 2008
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    FL, USA
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    Default Re: Nvidia proprietary driver doesn't work (GeForce GT 640)

    This seems to be a problem with the current NVidia drivers, solution for another in recent hours here.
    Reg. Linux User #211409 *** multibooting since 1992
    Primary: 15.1,TW,15.2 & 13.1 on Haswell w/ RAID
    Secondary: eComStation (OS/2)&15.1 on 965P/Radeon
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  2. #12
    Join Date
    Nov 2009
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    Default Re: Nvidia proprietary driver doesn't work (GeForce GT 640)

    I had problems with the newer NVIDIA drivers when I switched from 630 to 1030 card. I ended up going the NVIDIA site and installing older drivers the hard way which work fine. I think NVIDA may be doing some signing of the driver and that seems to be what is not working at least in some cases????? Maybe???

  3. #13

    Default Re: Nvidia proprietary driver doesn't work (GeForce GT 640)

    Ok I figured out how to resolve the issue.


    1. run sudo nvidia-xconfig to generate an /etc/X11/xorg.conf file (which did not exist before)
    2. Edit xorg.conf file with UseEdidDpi set to false (see below)
    3. reboot


    Code:
    Section "Monitor"
        Identifier     "Monitor0"
        VendorName     "Unknown"
        ModelName      "Unknown"
        Option         "DPMS"
        Option         "UseEdidDpi" "FALSE"
    EndSection
    Only thing I don't understand: why did I need to create the xorg.conf file to resolve? Why doesn't the same setting work when setting it in

    Code:
    /etc/X11/xorg.conf.d/50-monitor.conf
    followed by running mkinitrd. It seemed that my changes in that file were not picked up by the system, but I have no idea why.

  4. #14
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    Default Re: Nvidia proprietary driver doesn't work (GeForce GT 640)

    Quote Originally Posted by suskewiet2 View Post
    Why doesn't the same setting work when setting it in
    Code:
    /etc/X11/xorg.conf.d/50-monitor.conf
    ...It seemed that my changes in that file were not picked up by the system, but I have no idea why.
    In xorg.conf you had a 'Section "Device"' making a logical connection between your display and your GPU. For 'Option "UseEdidDpi" "FALSE"' to work in 50-monitor.conf, you need a file in xorg.conf.d/ doing the same, e.g. 50-device.conf.

    I can't actually test 'Option "UseEdidDpi" "FALSE"', because I never use taiting drivers, and it's not valid except using NVidia's drivers. But, proof of concept follows:
    Code:
    # /etc/X11/xorg.conf.d/50-device.conf
    Section "Device"
        Identifier	"Default Device"
    	Option	"monitor-HDMI-3"	"Default Monitor"
    EndSection
    
    # /etc/X11/xorg.conf.d/50-monitor.conf
    Section "Monitor"
        Identifier	"Default Monitor"
    	DisplaySize	541 304 # 120 DPI @ 2560x1440
    EndSection
    Without the 50-device.conf file specifying which monitor is connected to which output port, DisplaySize is ignored.
    Reg. Linux User #211409 *** multibooting since 1992
    Primary: 15.1,TW,15.2 & 13.1 on Haswell w/ RAID
    Secondary: eComStation (OS/2)&15.1 on 965P/Radeon
    Tertiary: TW,15.2,15.1,Fedora,Debian,more on Kaby Lake,Q45,Q43,G41,G3X,965G,Cedar,Caicos,Oland,GT218&&&

  5. #15

    Default Re: Nvidia proprietary driver doesn't work (GeForce GT 640)

    @mrmazda thanks for clarifying!

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