Is there a way to build an initial VidPN in Win 7 driver

Discussion in 'Windows Vista Drivers' started by driver_guy, Sep 16, 2010.

  1. driver_guy

    driver_guy Guest


    I need a help for the scenario below:
    I have two displays - CRTC and DVI output.
    the crtc is the primary display.
    Now I want to change and try to tell Win 7 to switch to DVI as primary after
    How can I do in the driver?

    It seems on Vista, the DXgk call recommendVidPnTopology can do it.
    But in WIn 7, this DDI is removed.

    In IsSupportedVidPn, I can fail the original VidPN (Crtc). And I can let the
    OS shows desktop on DVI.

    But when I try to switch to crtc from desktop property page, I got unable
    save display settings error message.
    Any expert can help me?

    Thanks in advance.
    driver_guy, Sep 16, 2010
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