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

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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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J

John BAnswer

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

G

GuitarSuperstar

Lead Maestro

Can you post photos of your current TV settings? If you disable and re-enable Viera Link, does it change anything? What happens if you disable eARC?

"Receive with simplicity everything that happens to you." - Rashi

D

DuncangaAuthor

Contributor I

I'll post some pics of the settings when I'm back home later. The sonos app itself couldn't complete the TV setup, it kept failing to establish the viera link, so I would endlessly go through the cycle of being prompted to check the hdmi cable is connected to the eARC port, then saying 'still not visible" reconnect, retry and then the app would hang whilst trying to search for the TV. Essentially I can't turn on or off the viera link.

If I disable eARC in the panasonic setup menu, then turn it back on, nothing changes. It's frustrating as I briefly had the mythical dolby atmos logo appear in the sonos app last night whilst watching via Netflix. Then this morning no sound at all. Disconnected, powered down, reconnected and powered up, got sound but no atmos even though the TV says dolby atmos being played. Sonos says no

Thanks for trying to resolve this matter

D

DuncangaAuthor

Contributor I

D

DuncangaAuthor

Contributor I

This is the system info when the TV says its output is dolby atmos.. there seems to be an issue with the TV passing through the atmos to the arc via eARC. Any one else having this problem?

J

John BAnswer

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

J

John B

This is the system info when the TV says its output is dolby atmos.. there seems to be an issue with the TV passing through the atmos to the arc via eARC. Any one else having this problem?

Hi. I think @GuitarSuperstar was more interested in seeing your TV audio settings - can you post photos of those?

D

DuncangaAuthor

Contributor I

I'm using the hdmi cable as supplied with the Sonos Arc

D

DuncangaAuthor

Contributor I

And now, to.really annoy me, I have dolby atmos via the xbox. I just don't understand it. I switch to Netflix on the TV app and I have no sound at all now. Confused

J

John B

First, I can only assume that my earlier post was marked as best answer by mistake.

The most likely answer lies in the TV audio settings. But nobody can help there if we can’t see what they are.