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Duncanga
Contributor I
May 14, 2021
Answered

panasonic TX-55HZ980B showing dolby vision and dolby atmos but sonos arc only playing 5 1

I've recently purchased a sonos arc, sub and 2 one sl's and set them up as a home theatre using the panasonic -TX-55HZ980B eARC. When I watch dolby atmos content via Netflix app on the TV, the TV is showing dolby vision and dolby atmos, but the sonos app is only showing pcm 5.1

I've tried disconnecting the TV and arc bar, turning off the power and then reconnecting everything. Briefly I got dolby atmos through the arc and it showed in the sonos app.  Went to bed, turned off the TV as per normal and came down this morning and had no sound at all. 

Disconnected and re connected the hdmi cable and got sound. Still no atmos.  All the TV settings are correct. eArc is enabled, it's connected to the hdmi 2 eARC so why does it keep losing atmos? 

Very frustrated as I purposely purchased a TV that supports dolby atmos and eARC to work with the sonos arc yet it is very intermittent. 

 

 

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John BAnswer
May 15, 2021

Are you using the HDMI cable supplied with the Arc, or an equivalent alternative that supports Atmos?

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DuncangaAuthor
Contributor I
May 16, 2021

 

DuncangaAuthor
Contributor I
May 16, 2021

 

DuncangaAuthor
Contributor I
May 16, 2021

 

DuncangaAuthor
Contributor I
May 16, 2021

 

DuncangaAuthor
Contributor I
May 16, 2021

When I try and run the setup for the TV via the sonos app, it keeps telling me to connect the hdmi cable to the eARC terminal. It most definitely is already in the correct port, but I unplug it,.reconnect it and the apps says it fails to establish viera link.  

GuitarSuperstar
Lead Maestro
May 16, 2021

Disconnect the Arc and all other devices from the TV. Unplug the Arc and TV from power for about a minute. Plug the Arc and TV back into power but leave everything disconnected. Be sure Viera Link is enabled, then run the TV Setup process in the Sonos app. Connect the Arc to the TV’s eARC port when the app instructs you to. When the TV Setup process is complete, test a Dolby Atmos source. If it works, connect your other devices to your TV and test again.

"Receive with simplicity everything that happens to you." - Rashi
    DuncangaAuthor
    Contributor I
    May 16, 2021

    Disconnect the Arc and all other devices from the TV. Unplug the Arc and TV from power for about a minute. Plug the Arc and TV back into power but leave everything disconnected. Be sure Viera Link is enabled, then run the TV Setup process in the Sonos app. Connect the Arc to the TV’s eARC port when the app instructs you to. When the TV Setup process is complete, test a Dolby Atmos source. If it works, connect your other devices to your TV and test again.

    Thank you so much.... its only gone and done it. 

    😀

    Really appreciate the help and knowing the order I which to connect all the various devices is really helpful. Thanks again. 

    DuncangaAuthor
    Contributor I
    May 16, 2021

    And then it stopped.  Swapped to my xbox one s, started an atmos app, the TV switched itself off then back on and it went back to 5.1  Is the xbox connection on hdmi3 causing the problem?

    GuitarSuperstar
    Lead Maestro
    May 16, 2021

    And then it stopped.  Swapped to my xbox one s, started an atmos app, the TV switched itself off then back on and it went back to 5.1  Is the xbox connection on hdmi3 causing the problem?

    Yes, the Xbox is probably causing the problem. Try disabling CEC on the Xbox:

    This feature can be turned on and off via the TV & A/V power options settings screen. Press the Xbox button  to open the guide, then go to Profile & system > Settings > General > Power mode & startup > TV & A/V power options.

     

    You can also try connecting the Xbox to a different HDMI port or trying a different HDMI cable with the Xbox.

    "Receive with simplicity everything that happens to you." - Rashi
    DuncangaAuthor
    Contributor I
    May 16, 2021

    And then it stopped.  Swapped to my xbox one s, started an atmos app, the TV switched itself off then back on and it went back to 5.1  Is the xbox connection on hdmi3 causing the problem?

    Yes, the Xbox is probably causing the problem. Try disabling CEC on the Xbox:

    This feature can be turned on and off via the TV & A/V power options settings screen. Press the Xbox button  to open the guide, then go to Profile & system > Settings > General > Power mode & startup > TV & A/V power options.

     

    You can also try connecting the Xbox to a different HDMI port or trying a different HDMI cable with the Xbox.

     

     

    I've gone through the set up procedure again and I'm back to having dolby atmos via Netflix.

    I'll definitely try a new cable. I've left the xbox unconnected for now until I have time to take everything apart and change the hdmi cable as access isn't easy. Plus I'll try a different hdmi port and see if that helps. One change at a time though and see what results I get. 

     

    Cheers

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