IddSampleDriver VS Nsm

Get a dummy plug and mirror your monitor to it, or use this https://github.com/ge9/IddSampleDriver essentially the same thing but on a software level.

Indirect Display Driver

This is the way to go. In addition, you can setup a virtual display (I'm using [this](https://github.com/ge9/IddSampleDriver)) so you don't even need a monitor plugged in.

Honestly I'd reccomend moonlight with sunshine - although I can't say I've tested more than nvenc myself - it supports multiple encoders beyond nvec, and has a lot more performance tuning options ideal for a high bandwidth connection like a virtual bridge (which parsec is a bit less optimized for, and looks a bit blockier). It also doesn't need an online authentication, but still needs a dummy plug or this black magic

What is your host system? Since ESXI recognizes it and you could enable pass through without issue I’m thinking it is not BIOS related. I previously had issues with a different GPU on ESXI and it was immediately apparent something was wrong when you went to enable pass through (the checkboxes in the panel would go crazy, turned out to be a GPU map issue in ESXI). As for the display, it shouldn’t be necessary considering in its default state the M40 is intended for compute / CUDA tasks. Eventually you will need a display obviously, but out of the box if you’re just trying to confirm the GPU has loaded without issue a display is not necessary. For the display driver, I’m using IddSampleDriver, which works well (no HDR support, fyi)

Indirect Display Driver Sample

this theoretically should work too, tho I haven't yet gotten around to trying

NSM NDI Simple monitor, requires Unity3D and no ARM build for that.

There is also NDI simple monitor that appears to run on unity (?) but has builds for arm64

I then run Nsm.x86_64 (from https://github.com/keijiro/Nsm/releases) and can see the sources, pulling in about 38mbit of TCP from a Magewell proconvert -- about my download capacity.