Dolby Atmos - av receiver defaults to stereo

I am experiencing this as well. Everything comes across the av receiver as Dolby Atmos, even non-Atmos content. Previously the receiver would switch as needed.

I am experiencing this as well. Everything comes across the av receiver as Dolby Atmos, when previously it switched as needed.

My Xbox One X is connected to my receiver. When I try to setup Atmos in the audio settings Xbox One X says that my receiver, Denon AVR-4300H, does not have Atmos capability. I am only allowed to choose DTS for the bitstream sound output. Atmos works fine
with my Samsung 4K player so I know it is an Xbox One X issue.

The Dolby App does not give any error until I try to view the demo videos where it flashes, "you are not viewing this video on Dolby Atmos." It plays the demo video on DTS instead.

***UPDATE***

I finally got Dolby Atmos to work!!! Under "Settings, Display & Sound, Volume, Setup TV & AV Control, Audio" I had to change the default "Stereo" setting to "Surround Sound." The Xbox One X had to reboot to accept/change the setting. Once it rebooted Dolby
Atmos was working. It is interesting that the main control will be under the volume settings instead of audio output. You would think the system will be smart enough to activate surround sound when you are choosing Dolby Atmos to bitstream.

Hopefully this "difficult to find" change of setting will work for others who are having Dolby Atmos issues.

If the game does not support Dolby Atmos, then the audio is normal stereo. Microsoft are working on updating Dolby Atmos, where if the game does not support Dolby, the audio will be converted to simulate Dolby Atmos.

I am experiencing a similar issue; everything comes across the av receiver as Dolby Atmos, when previously it switched as needed.