In this case NoMachine doesn't use its own virtual display because it detects that the X server running.Ī common solution, valid for all the supported Operating Systems, 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.
This ability, enabled by default in the free edition of NoMachine, can be activated also in the commercial versions (see instructions for the Enterprise Desktop at the end of this article).Ī specific case which leads to black screen on Linux is when the X server is running but it is not rendering because the video card is turned off. NoMachine is able to detect when the X server is not running and run its own virtual display, which is an embedded X server. NoMachine is designed to work out-of-the-box on Linux headless machines provided a desktop environment is installed.
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