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Ericdhkim
Contributor I
June 13, 2020

Sonos Arc & Xbox One X, Dolby Atmos Trouble

Hey folks,

First time posting here.

So I've set up my Sonos Arc via ARC to my LG C8. I've been getting Dolby Atmos just fine via my Apple TV 4K (thanks to my LG C8 being able to decode the Dolby Atmos signal into a lossy format for regular ARC), but when I started up my Xbox One X today and went over to the audio settings and changed it to HDMI: Bistream Out and then I choose Bistream format: Dolby Atmos for home theater, I get no sound, silence...

When you initially choose that option, it makes you launch the Dolby Access app and then you can go to the product section to "setup" Dolby Atmos. I did that and it's turned on with the channel upmixer setting turned on as well.

If I set it to Dolby Digital or stereo uncompressed, I get sound. Although sometimes, when I'm on Dolby Atmos and then switch to either one of those, I'll still get silence and will need to do a hard restart (hold down power button on console for 8 seconds).

Wondering if anyone has found a way to get this to work?

Thanks,

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    16 replies

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    controlav
    controlav
    Lead Maestro
    December 26, 2020

    I’m able to go to bitstream, but when I select the Atmos setting it says that my bar does not support it. 


    There you go then: something in the HDMI downstream connection says it does not support Atmos. My guess is the TV, rtings.com does not list a QN49 so cannot check the TV specs.

    Author of the leading independent Sonos apps for Android, MacOS, iOS, Windows and Xbox.
      Thirdgen
      Lyricist II
      December 26, 2020

      It’s saying the arc isn’t atmos ready. 

      controlav
      controlav
      Lead Maestro
      December 27, 2020

      It’s saying the arc isn’t atmos ready. 

      No, it is saying the device plugged into the Xbox is not Atmos ready, which is your “hue sync box” (whatever that is) or your TV.

      Author of the leading independent Sonos apps for Android, MacOS, iOS, Windows and Xbox.
      Thirdgen
      Lyricist II
      December 27, 2020

      What’s crazy is the tv will do atmos through “VUDU”. I watched avengers endgame just fine but the third party through the arc doesn’t work.  

      controlav
      controlav
      Lead Maestro
      December 27, 2020

      What’s crazy is the tv will do atmos through “VUDU”. I watched avengers endgame just fine but the third party through the arc doesn’t work.  


      Is the Vudu app built-in to the TV, or running on the Xbox? Often TVs support built-in sources and fail to support HDMI connected devices.

      Author of the leading independent Sonos apps for Android, MacOS, iOS, Windows and Xbox.
      Thirdgen
      Lyricist II
      December 27, 2020

      Aweee I see. Vudu is built in. 

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