Can’t change the resolution when connecting to headless Windows machine

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  • #39958
    yellowSubwoofer
    Participant

    Hello,

    I have no problems connecting to the PC, but I can’t change the resolution. It’s fixed at 640×680 and grayed out. Opening the settings on the headless windows machine also doesn’t really work because when I scroll to the desired setting only the scrollbar moves and everything else stays still.

    – free version 7.10.2 on both PC
    – Windows 10 pro to Windows 10 home

    Thank you.

    #39973
    Britgirl
    Keymaster

    Hi, this is related to the GPU’s capabilities.

    Please consult this article from our online knowledge base:

    How to solve ‘stuck resolution’ problems on headless machines
    https://kb.nomachine.com/AR05S01127

    “In some cases users can get only a small screen resolution without the possibility to change it (‘stuck resolution’).  This depends on the GPU which makes available only one resolution when the monitor is not present.

    A common solution is to adopt a fake display dongle (also called ‘dummy dongle’) inserted in the video card port to simulate the presence of a screen and force the system to take full advantage of the GPU as if a real monitor is connected.”

    I’m not sure what you mean by “Opening the settings on the headless windows machine also doesn’t really work because when I scroll to the desired setting only the scrollbar moves and everything else stays still.” A recording of the NoMachine session would be useful to illustrate the problem perhaps.

    #39977
    yellowSubwoofer
    Participant

    Hi Britgirl,

    I fixed the problem by installing a program which enables me to create virtual monitors. Thank you.

    #39986
    Britgirl
    Keymaster

    Thanks for the update.

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