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  • Blackmagic Design

    Decklink overrides VGA display

    Posted by Jerome Debeve on October 27, 2005 at 12:52 pm

    Hi,

    We are experiencing a strange behaviour with our Decklink Extreme (dual Xeon, WinXP, Nvidia QuadroFX1400).
    Ultimately on reboot the display on our principal monitor seems to be overriden
    by the video monitor. I get a black screen on the VGA monitor and the windows desktop
    only appears on the SDI output. In the device manager only the Decklink is activated, the Nvidia Display
    gives an error. Disactivating the Decklink allows us to boot on the VGA monitor and use the SDI monitor
    as a frame buffer but we loose the extended desktop function.
    Is there any kind of incompatibility, or some display options we are missing on the Nvidia side ?

    Thanks,

    Jerome

    Jerome Debeve replied 20 years, 6 months ago 3 Members · 3 Replies
  • 3 Replies

  • Jeff Brown

    October 27, 2005 at 2:31 pm

    I suspect the “desktop output” for the Decklink is enabled. Go to the monitor properties (via your SDI monitor) and disable the 2nd or 3rd monitor, whichever is the Decklink. (un-check “extend Windows Desktop to this monitor”). Might require a re-boot. I’ve had related issues when updating the DL drivers.

    Hope it helps,
    Jeff

  • Luke Maslen

    October 28, 2005 at 8:03 am

    Hi Jeff,

    Yes I expect that will work around Jerome’s problems. It’s a good idea to ensure you are running current NVIDIA drivers. NVIDIA also has its own extended desktop feature and it might be that both the DeckLink and NVIDIA desktops will not coexist together. Jerome could experiment with disabling the NVIDIA desktop and then see if he can use the DeckLink desktop.

    Regards,

    Luke Maslen
    Blackmagic Design

  • Jerome Debeve

    October 31, 2005 at 1:21 pm

    Hi,

    Thanks for responding.
    The trouble here is that we entered a strange dynamic where re-installing the DL drivers will
    cause the Nvidia display to not initiate correctly. If I disable in the device manager the DL
    display, then on reboot the Nvidia takes over and boots on the VGA monitor but the DL wants to
    install the display drivers another time. Sometimes I even get the blackmagic display on the
    VGA monitor ; and now, the framebuffer doesn’t seem to work anymore. I will try to uninstall
    everything ( NVidia and BM drivers) and I will tell you…

    Jerome

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