Lost surround and sub ( after update ?)

@Brad Porter,
A ‘secondary’ node represents being cabled/wired and a ‘tertiary’ node shows a ‘wireless’ connection but in my own Sonos setup, in the distant past, whenever I was using SonosNet STP a Sonos device has been elected as the STP root bridge in my otherwise unmanaged network.

The root bridge has the lowest Bridge ID (often the Sonos Boost maybe elected, for example). All the decisions including which ports are the ‘root’ ports (the port with the best path cost to the root bridge) are made from the perspective of the root bridge.

Path cost – A switch may encounter one or more switches (junctions) in the path to the root bridge. All the paths are analyzed and the path with the lowest cost is elected. 

So I’m just assuming a non-sonos device on the local network is elected as the root bridge… unless it’s just a matrix labelling issue?

So whilst I can’t see why that would perhaps affect the surrounds/sub dropping out. I was just wondering if switching the system to a local WiFi connection with links back to the router, would make a difference and perhaps solve the issue.?

The root bridge will be elsewhere in the network, most probably the router.

In x.x.x.x:1400/support/review open the /usr/sbin/brctl showstp br0 link for any SonosNet node. The designated root is listed, as bridgePriority.MACaddress.

Thanks @ratty🙏. It just struck me odd that those that were seeing this ‘surround dropout’ issue, seemed to post a matrix that did not have a Sonos product elected as a root bridge, even those with a Boost, so whilst I understand by itself that isn’t an issue, I was just curious to see if switching away from SonosNet and using a wireless connection instead might make a difference to the surrounds dropping-out. It now seems it doesn’t have any impact, but thought it might be worth exploring, just to see.

Just happened to me rebooted my apple tv as home hub lost device's and sub and surrounds had no sound from any source.

Had to remove and readd them to get it working 

Not had any problems with the update until now 

Guessing that they will need to do another update to fix it 

My system has been fine upto now also when i removed the surrounds I had to add them as new rooms and then the app allowed me to add them as surrounds

Before that they appeared in the app as having a problem but would not add as surrounds

He could see that something was wrong with your diagnostics? Weird. When I talked to the support, they said that everything looks fine even though there was no sound from the rear/sub. But at least it’s a progress.

I was able to pull the network charts as previously posted. I think the first chart shows when the surround/subs have dropped off and the second chart shows fully functional system after a fresh reboot of my Sonos Arc soundbar. In my case my Sonos Arc is hardwired to ethernet and the surrounds and sub are therefore on the Sonos subnet. Only the soundbar needs to be rebooted for full functionality to be restored.

 

 

 

Just reported mine I had to remove them and readd them to get it working but will reboot my arc next time it happens as my setup is same as yours 👍

I edited my original post. Just an FYI I’m not sure if these charts show anything of value as currently all my speakers are working but the chart has reverted to the 1st one i.e. the one I took after the subs and surrounds had initially dropped off.

It finally happened… I just lost my Sub and surround audio tonight. I was listening to an album on Blu-ray on my Arc/Sub/Play:1s setup in multichannel PCM 5.1. It worked fine for a few songs. Then I went to the disc menu and restarted the album and the Sub and surround audio was gone. I had to power cycle the Sub and Play:1s to fix it. This is the first time this has ever happened since I’ve had my Arc setup (since August 2020). 10 days ago, I experienced a delay from my surrounds for the very first time too while watching YouTube videos.

@Corry P There is definitely something not right and it can’t just be a coincidence that others are experiencing the same issues at the same time.

UPDATE: I lost the Sub and surrounds three times in one night.

Reproduced the bug again, this time it was triggered by toggling Dolby Atmos several times through my Samsung TV (Sound > Expert Settings > Dolby Atmos)

Diagnostic: 457472945

Yes, I have observed that issue as well, although not as much as the loss of rear and sub sound.

Really feels like the ARC is struggling to process the sound and communicate it out in a timely fashion. I certainly cannot see any network congestion on my side. During this issue I have moved all the networking devices together, created a segregated network so I have a more ‘ring-fenced’ network. It has made no difference, but at least it has helped on a journey of elimination.

I rebooted everything last night and watched a Disney+ film for 45 minutes (Dolby Atmos) and the sound was consistent. I then moved to Netflix and played a 5.1 movie and the rears and sub went dead from the get go. (Although I did notice that some bass was being sent to one sub, but it was flabby, unrefined and horrid).

Worth reiterating, I have also had occasions that when the sound is not working for rears/sub, and I keep playing the movie, the rears have started to crackle and stutter and then come back to life. Again this is rarer than the other symptoms, but it might be helpful in understanding remediation. 

@skullc - is it still working throughout today since you removed and re-added the subs + surrounds? 

Same issue, since 14.6 my sub disconnects and rear speakers too!! Before 14.6 everything work flawlessly. This is an issue with your update!!! Please fix.

Unfortunately the issue will come back eventually