HDMI not staying connected to Organelle

The physical HDMI connections to the Organelle and computer monitor are working.

I’m unable to keep the Organelle connected via HDMI to my computer monitor. It works for a while then goes away.
Is it timing out? Is it my monitor? Is there a setting to keep it active?

The monitor works fine on my Mac.

what happened when the mouse is moved?

Yes, I think @shreeswifty is right. The Organelle HDMI connection does time out/go to sleep after a bit. Hitting a key on your keyboard will wake up the Organelle.

Thanks for the advice.
If I shut down the monitor and turn it back on, it sees the Organelle. That’ll do just fine.

Thanks again!