Multi-channel HDMI our from Xbox broken since 2021

[quote user="IceStorm III"]

... Far as audio is concerned, HDMI on the 360 supports two channel LPCM and Dolby Digital 5.1. It isn't limited to a two-channel output. There are several other lossless multi channel formats that have been added to the HDMI standard over the years. Those do
not work with the 360. ...

[/quote]

So is it a matter of console settings to get DD5.1 via HDMI on the Xbox?

Depending on your TV, the Audio Return Channel might not support surround sound from other inputs, like the other HDMI input from your Xbox. Most TVs only send multi-channel audio via ARC if the sound is produced in the TV's tuner, like Live TV, or attached
media drives.

Since the Bose Soundbar seemingly supports optical TOSLINK, your best option would be to add an optical cable between your Soundbar, and the optical output of your Xbox console.

Enable Surround Sound in TV & One Guide Troubleshooting if you want multi-channel. Too bad this isn't set by default because most will assume that the audio is broken.

Thanks GZA, when set to uncompressed 5.1, the only setting that can be done on the Denon is multi-channel, multi-channel stereo, Stereo, mono movie, virtual, Direct, Direct Pure. if i set the hdmi output to stereo uncompressed, i get the choices of PL II,
NEO,THX Movie ...

never tried though the direct or direct pure, i do not know if these are good for movie.

You should select MULTI CH IN as your surround sound mode on the Denon. This will provide surround sound, if you choose either 5.1 or 7.1 uncompressed audio on the Xbox One. This is the option that is available because is it an uncompressed PCM multi-channel
source that is coming into the AVR. Just make sure you don't have STEREO selected as your mode on the Denon. This should provide higher quality sound than DTS as it is uncompressed.

This is if you use HDMI for your audio. If you use an optical cable then your only options are stereo uncompressed and DTS Digital Sound. Then your only option is to use DTS for surround sound. It sounds like you are using HDMI as your receiver is giving
you the option of multi-channel sound.