Hardware acceleration not working, Mac to remote Windows

[DocM]

I have a a remote Windows 10 box that I’m connecting to from my Mac (10.13.6) via NoMachine. The Windows box has two Nvidia cards in it and is primarily used for 3D rendering. While this set up initially worked fine, for whatever reason NoMachine sessions no longer seem to be utilizing the GPUs. “Use acceleration” is checked in the preferences, and I’ve tried reinstalling NoMachine on the server with no change. For comparison, Windows Remote Desktop uses the GPUs without issue.

Some other symptoms:

The Windows start menu appears wrong, with all the menu items small and bunched up.

Sometimes I have to disconnect and reconnect because the initial connection is unresponsive (the mouse moves, but the screen doesn’t update otherwise).

 

The other thing to note is that the remote machine is dual bootable with a Linux install that also has NoMachine. I’m not sure if this is related.

I can get you logs if required.

Thanks,

-L.

[fra81]

Hi,

what you say about not using the GPU and even more what you see in the Start menu makes me think the Windows box you connect to is headless. Is it the case? If yes, can you try to attach a monitor and see if these symptoms disappear?

[DocM]

Hey Fra81,

Thanks for getting back t0 me. Yes, the machine is headless, and yes attaching a monitor stopped the problem. Unfortunately I don’t have an extra monitor available though. Is there a solution that will allow me to run this machine headlessly as intended?

 

Thank you,

-L.

[DocM]

Hi,

I’m still having trouble with this. Can you please help me? How can I run my remote machine headlessly without sacrificing the use of my GPUs?

 

awaiting your reply,

-L.

[SteveSpaw]

HDMI or DP dongle plugged into the Windows PC?

That is what we do.

[fra81]

Hey L.,

as SteveSpaw says. The HDMI dongle would be the way.

[Author]

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