Display is black when running through moonlight

[plarossa]

Hello!
I came over to Apollo because I was having a hard time getting Sunshine/Moonlight working. I'm continuing to have a hard time with Apollo, and am very well aware this must be user error, but I'm new enough to these pieces of software that I'm not even sure where to start with the troubleshooting.

I currently have Apollo running on my main PC which has a 4090 and two displays, a 1440p display vertical as the secondary display and a 3440x1440 display as my main display. I'm running moonlight on a chromecast with google TV to a 4k HDR TV. I can connect just fine, but when I start an application, whether it's steam or my desktop, I just get a black screen. I can hear sounds, so I know I'm connected, and it appears that a virtual display has been created, because I can move my mouse off the screen to presumably an additional display. Additionally, the little HDR display pops up in the corner showing HDR is on. Unfortunately, my TV and desktop are far from one another so it's hard to test things easily.

I've tried a number of things, including setting the advanced displays to deactivate other displays and use only the specified display. I've set the app settings to Always use virtual display. But nothing has changed.

Not sure what all I'm doing wrong, but open to any suggestions.

ETA: Now, having changed nothing, it seems like when I start Steam Big Picture on the moonlight client, a desktop appears and steam big picture is popping up on monitor 2 (the vertically oriented one) and a desktop appears.

[ClassicOldSong]

1. Make sure the virtual display is set to primary, or in Lock Screen it'll show a black screen (you have two monitors so you should already know the behavior)

2. If you have not disabled your iGPU, the virtual display may create on the iGPU sometimes. Set Adapter Name to your dGPU should force the virtual display to create on the dGPU.

[plarossa]

Thanks so much for the reply!

Apologies if this is a silly or ignorant question, but if I set it to the primary, will it revert back to the previous primary setup when I close moonlight?

[vvarcos]

Yes

[ClassicOldSong]

Yes, and that's native Windows behavior which is tested and you can rely on.