Xbox not showing up on HDMI outputs.

Well, I took it into the store and they hooked it up and it had no problems. Brought it back home and didnt have any issues there as well. Either it was a complete fluke problem or I was doing something wrong, but it works now.

Made a mistake in my op. I listed an old receiver. I swapped that one out with a sony str dn1040 last year. This receiver has two hdmi outputs. I'm really not familiar with the functions of the second output at this time. I don't know if the second
hdmi output mirrors the first hdmi output, meaning that both outputs show the same thing on two displays. Or if it has discrete transmissions, meaning two displays can show different inputs. For example, one display shows my ps4 and the other display shows
my Xbox one. I don't even know if the latter is possible. But if the latter is the case, I can use the second hdmi output into the Xbox one hdmi input and have it on my cable box at all times.

Any thoughts

I'm going to study the manual tomorrow

Let's at least test if the console is able to at least output any video (even 1080p). Does it show up on the screen when plugged into the other HDMI ports?

You say you hear sound sometimes. Have you also made sure you plugged the HDMI cable into the HDMI-out port (and not the HDMI-in) of the Xbox?

I will check but I do have an AV system which is setup up just like the Basic Set Up Guidelines specify:

Basic setup with an audio/video receiver

With an audio/video (A/V) receiver, the best and most direct option is to connect the devices sequentially:

1. Connect your set-top box HDMI output to the Xbox One HDMI input.
2. Connect the Xbox One HDMI output to your A/V HDMI input.
3. Connect your A/V HDMI output to the HDMI input on your TV.

Now I will have to see if the TV has HDMI output to include A/V if Xbox needs to go directly to TV or switch to optical

My Xbox One X has the same issue. I only noticed it doing it recently. I usually have HDMI audio set to output bitstream (DD), but on startup I will occasionally see it has change the HDMI audio output to 5.1 uncompressed. It's easy to notices as my
receiver will show as outputting Pro Logic II instead of DD 5.1 as it should when the Xbox One X is outputting a bitstream signal over the HDMI.

A power cycle does nothing. The only way to fix it is to go back into the audio setting and change it back to output bitstream over HDMI. It also doesn't do it every time the system is turned on. Sometimes it will turn on and remain on bitstream output as it
should.

Strangely enough I just noticed it doing this since i got a PS4 Pro. Almost as if going from the PS4 Pro's HDMI input to the Xbox One X's HDMI messes things up somehow. Though I haven't been able to find a situation where that can be replicated.

In any case....it seems ludicrous that a setting like that will just keep changing itself.