Lost surround and sub ( after update ?)

I just saw this though it’s from a few days ago

https://www.whathifi.com/news/sonos-promises-to-fix-audio-dropout-issue-introduced-with-its-latest-software-update?utm_content=whathifi&utm_campaign=socialflow&utm_medium=social&utm_source=facebook.com&fbclid=IwAR0D92cWQQr83Un8w6giY2JG7anG793Mi0kZCCuWf9NQz0tYW3VVkqxwTvk#l2v1tfeqn1wkxbug3nt

That article is nothing new it’s using this thread and Reddit as a source 

@Screemer75,

What is ‘Living Room’ HT actually cabled to?

I see that all Sonos traffic is going through that one wired device called Living Room (I assume it’s your Arc) and everything else is wireless-connected. It again seems the STP ‘root bridge’ is a non Sonos product, but I also note that your matrix shows 6 devices only, but your online profile in the community here lists 7 devices, so is something missing or not being used in the Household? 

After the issue returning again, and another power cycle, and surround factory resets with support chat, they did acknowledge Sonos was actually aware of the issue saying;

“Our developer is already working on it, And they will give us a heads-up once they figure out the resolution for this issue. …. We are receiving a lot of contact with the same issue with this update and we are always sending it to Feature Development team.”

I thought I was going crazy. Glad I found this thread. I started having issues after the latest 14.6 update.

I have a Sonos Arc (hardwired ethernet WM0 setup) with surrounds and a sub and have noticed that audio will totally cut out when moving between videos on YouTube app on native Android TV built into Sony XBR55A1E OLED TV. Loss of sound will propagate to all HDMI sources incl. native apps and cable box.

Recently I also noticed echoing (occasionally) and loss of surrounds and sub audio on all sources incl. Apple TV 4K and through Android TV apps.

App will report all speakers are connected and functioning properly despite loss of sound. Airplay 2 from iPhone will always work even after TV sound loss. Bizarre behaviour. I’ve been in touch with support and submitted numerous diagnostics.

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Support initially thought it was a problem with the HDMI ARC cable, however, replacing the cable did nothing. Then they thought it was the Apple TV 4K that might be the culprit but removing the Apple TV did nothing. They kept referring to HDMI-CEC interference as the possible issue. I hard factory reset my TV to no avail. I’ve had the same hardware setup for 5 years without issue. Support never mentioned that there was an issue with 14.6 despite me telling them that I thought it was the culprit. Tomorrow I have an escalatory call setup with Sonos. I’m glad I found this thread.

I’m having the same exact issues with my setup. Arc, SLs, Sub & Apple TV. Has anyone had any luck for a workaround? This is super annoying & frustrating 

Hi Ken,

   My Arc is wired ethernet, eArc to Sony Tv. I then have the sub and 2 ones for surround. In Dining i have a Five, and Snug i have Beam. 

Ah okay thanks, but I was curious as to what the Sonos Arc’s ethernet is cabled to, is it direct to a router, switch, Hub or something else? Also what is the brand/model of that device it’s linked to?

There’s no issues seen with your device wireless connections but what channels are you using for your router and SonosNet signals?

Have you checked to see if it makes any difference if you run your Sonos system on your routers WiFi signal, without the Arc being wired?

The Sonos setup I have here is presently running on my local router WiFi and I’ve not (yet) seen the reported issue, although I appreciate others are encountering the problem. I’m just wondering if switching your system over to the local WiFi signal, might make any difference at all to the dropouts you’re seeing. See this LINK too.

The arc is wired to a Tp Link switch, that then goes to my SKy router on a Gigabit service. Sonos suggested i wired it as i was having this problem before using WiFi. They suggested i changed the wireless to 1

My own thoughts would have been to try bypassing the Tp Link switch altogether and connect either the same, or preferably a different Sonos (standalone) device direct to the Sky router, such as your ‘Five’ (even just as a temporary measure) to see if the ‘dropout’ problem goes away. If it doesn’t, then I would just wait and see if perhaps a Sonos update may resolve the issue.