Not yet. I’ll try a reset tomorrow. 
 

After turning the tv off and back on, subs and surrounds came back. 
 

Hey folks. Sorry for the long post and possible hijacking. As this appears to be the most active, relevant thread to the Sonos 14.10 update, thought I’d ask for your help in testing a potential audio dropout issue. I suppose this is for Beam 2 and possibly Arc owners as it requires an earc connection. Should only take around 5-10 minutes.

Basically, I am encountering an issue with Multichannel PCM 5.1 where audio cuts off once every 1-2 minutes. Issue only occurs with LPCM 5.1 and not with other formats. Even LPCM 7.1 works fine so it most definitely isn't a bandwidth issue. I'll be outlining steps below on how you could test for the issue with a PC or a PS5. But I suppose you could use other devices as long as you can set it to output LPCM 5.1 and your Sonos app shows the audio format as Multichannel PCM 5.1. Make sure your Sonos is on the latest firmware.

Steps for PS5:

• Go to Settings→ Sound→ Audio Output→ HDMI Device Type→ Set to AV Amplifier

• Go to Audio Format→ Select Linear PCM

• Go to AV Amplifier→ Number of Channels → Select among 2 ch, 5.1 ch, and 7.1 ch

• If you select 7.1 ch or 2 ch from the dropdown on the PS5, Multichannel PCM 7.1 / Stereo PCM will be reflected on the Sonos S2 App. Listen to the background audio while on the settings page and there should be no issue.

• If you select 5.1 ch from the dropdown on the PS5, Multichannel PCM 5.1 will be reflected on the Sonos S2 App. Listen to the background audio while on the settings page and there should be consistent audio dropouts once every 1-2 minutes.

Steps for PC:

You don't need an actual 5.1 audio source. You can simply go to youtube on your web browser and play a random video. Just adjust your Windows Sound settings as follows

• Audio set to Dolby Atmos for home theatre - youtube vid is being reported by Sonos S2 App as Dolby Atmos (MAT). No dropouts

• Audio set to 7.1 channels - youtube vid is being reported by Sonos S2 App as Multichannel PCM 7.1. No dropouts

• Audio set to 5.1 channels - youtube vid is being reported by Sonos S2 App as Multichannel PCM 5.1. Consistent audio dropouts every 1-2 minutes

You might be wondering... Why am I making a big deal out of this when most steaming apps use Dolby formats and on PC/PS5/XBOX I would ideally set my audio to output LPCM 7.1 or Dolby MAT Atmos? Why would I choose the inferior LPCM 5.1? In my case, I came upon this issue while using my PS5 as a bluray player.

My setup is PS5/PC -> LG C1 -> Beam 2 via earc. As the C1 does not support DTS, I always have my PS5 transcode my DTS-HD MA 5.1 blurays to LPCM 5.1 to retain multichannel playback. 2 weeks ago, a couple of days before the Sonos 14.10 update, I watched a bluray film on my PS5 and had no issues with the Multichannel PCM 5.1 format. Then yesterday, I tried watching another bluray film and I encountered constant audio dropouts with the Multichannel PCM 5.1 format.

The only difference with my setup is that the Sonos has since updated to 14.10 so I'm inclined to believe it's the culprit. As demonstrated above, it's not an issue with bluray playback / DTS-HD MA to LPCM transcoding as it worked flawlessly pre-14.10 and can easily be reproduced on the PS5 settings page and with a PC. 

Basically, there are audio dropouts when the Sonos App reports that the incoming audio format is Multichannel PCM 5.1. Unfortunately, there is no way force the PS5 bluray playback to use a LPCM 7.1 wrapper instead nor to transcode to Dolby so until this is fixed I won't be able to enjoy my blurays. Hoping for your kind assistance in verifying if I'm just unlucky or this is simply an undiscovered issue due to being part of a a very specific use case.

Re: my post above. I spoke to a couple of people and it seems like it’s a Beam 2 only issue. Nonetheless, feel free to test if you’re on an Arc. Hopefully we can eventually get Sonos to take this seriously. Thanks

still no dropouts for me since 14.10

Me too, no dropouts since 14.10. God bless the developer of this update, hopefully this was quality checked before rolling out to the masses.

Im getting dropouts While Playing ps5. 
 

Never had a problem. 
It begin with 14.10

No dropouts for me either since 14.10. 
 

Before that, I couldn’t go more than 15-20 mins, from any source, without the surrounds dropping. 

I was totally good until last night. I TruePlay’d my set up for the first time before sitting down to watch the last couple episodes of Stranger Things (which were 4 hours). Since 14.10 I’ve watched an entire season of The Boys along with some other stuff, literally 0 issues. After TruePlay, I didn’t have any issues with the subs or surrounds dying (thank god) but I started getting random 2-3 second drops in the middle of Stranger Things. Over 4 hours I’d say there were probably 5 instances of the sound dropping? Sometimes when this happened, the Dolby Vision badge would appear on my TV when the sound came back. Stranger Things is literally the only thing that triggers this as of right now. 

I happy to report no drops since 14.10… like, soooo happy!

Damn. After my post above, it finally happened just now. 
 

I started watching TV on my LG CX (via internal freesat decoder), and surrounds were silent. 
 

Sonos iPhone app showed +?+? rather than the usual +LS+RS. Had to reinstall them to the setup and now I’ve lost my Trueplay tuning. Didn’t take long, but very frustrating- particularly after a long stretch of it being fine. 
 

That said, it’s definitely much more stable now. 
 

Support contacted & diagnostic sent. 
 

EDIT: I only got around to adding  Trueplay yesterday… Could this have made it unstable, I wonder…

Sounds like your surrounds just disconnected, if it was this issue they would still show as connected but have no sound.

I have my fingers crossed that’s the case. After the last few months, if my toaster stopped working I’d probably think it was my Arc’s fault...

Push 

does anybody else have the issues ?

i lose surround (sls) and sub (gen3) mostly playing ps5. 
 

after turning tv off and back on, surrounds and sub come back eventually 

Edit: Sonos told me that something is interfering the connection. I didn’t change anything at all. 
 

they told me to turn off 5ghz Wi-Fi 

I would perhaps give these few things a try…

• Switch ‘off’ HDMI CEC on all the peripherals connected to the TV over HDMI.
• Power ‘off’ the TV, connected devices… and all the related Sonos HT products for a few minutes at their power socket and power them ‘on’ again to setup the HDMI handshake again and see if that resolves the issue.
• Where practicable, try to move anything else using the 5Ghz WiFi band further away from the TV/Surrounds, or consider cabling things to the router, or use them on the 2.4Ghz band instead, but do not wire the bonded surrounds, or Sub.

See if that perhaps improves things for you, rather than switching off your routers 5Ghz WiFi band.

still rock solid for me

Just wondering if anyone had updated to 14.12 yet? Slightly scared to do it myself :)

Same as. I think I'll wait 

Absolutely not 

LMAO. Yeah...my update notification is just sitting there. I AINT TOUCHING IT. I'll let someone else Guiana pig it.

yes the same, I'm not updating. I'm waiting for someone brave to do it

Same here.

No one wants to be the Guinea pig, lol

Sonos HQ server room

Update 14.2 

downloads 0

”hey guys anyone know why no one’s updated yet”

Oh and to make you aware guys if you only update the Sonos app some settings will be greyed out until you update the system, Trueplay, remove sub are some options greyed out currently.

So going to have to update soon.

Also I think a trueplay retune is needed for this update, the update contains improvements to the dialogue centre channel.

Lower volume and bass levels no perceived clarity improvement my advice don't update 

Wish I hadn't

Did you try doing a trueplay retune?

I heard someone mention speech is better in this update.

Did the retune before noticing the 50% drop in volume 

I had no issues with clarity before the update an not noticed any improvement since 

Settings before for do not disturb the neighbours were 15 volume and bass and sub 0

Now 30 volume +4 bass +2 sub not tested movie night settings yet but guessing all will be have to be Increased