Sonos speakers dissapear on Ubiquity Network.

Not an expert on Ubiquity, and will assume you’ve read this: https://github.com/IngmarStein/unifi-sonos-doc, but your post sounds like your system needs a network refresh, at least possibly.

You’ve done half of it already, just with unfortunate timing. What I’d try is unplugging all your Sonos devices from power, and while they’re unplugged, reboot your router. Wait a couple of minutes for your router to come back up, then plug back in the Sonos devices. Wait another two minutes for them to boot up and connect, then open your controller, and test.

Enable UPnP in the Sonos app.

See here

https://en.community.sonos.com/product-updates/new-sonos-app-player-updates-for-early-march-are-now-available-6933349?postid=16884276#post16884276

“Per Sonos’ recommendations” - they have no such thing. Uni have one, but it is useless. The best doc is the one Bruce listed above.

WOW, finally got it working.

So I have an arc ultra, sub 4 and 2 era 300’s. I guess that makes me committed to Sonos. (mediocre choice!)

I didn’t want to spend 3 hours of a call with Sonos support (again) diagnosing my working Ubiquity network….

Factory reset the Arc Ultra. 

It wouldn’t connect to my wifi, tried 3 more times, typed in the password manually. Nothing worked. I tried with my computer too - couldn’t see the Arc Ultra.

I connected it to my IOT network and it connected (!?) same AP, sigh. Retried to connect with my regular network and after a few more tries, button presses and incantations it worked.

Then the Arc Ultra needed an update, that downloaded and after 20 minutes re configuring everything in the phone ap - I was able to get it all working again. (I suspect the Sonos update failed and cratered the Arc Ultra but who knows? ( Did reset the AP though...)

So since the sub and surrounds connect directly to the Arc Ultra - it took 10 tried to remove them from other associations in the app. I was finally able to get all the sonos devices in the “TV Room” and it appears to work now.

Sonos doesn’t save the configuration so all the settings are lost.

Sonos support has no solutions that are simple and every time I say I have a Ubiquity network - they want to dive into that as the problem. Yet the sonos device at a factory reset was not able to connect to the wifi (that the tv behind it is connected to.

All quite frustrating.

I am really dissappointed that Sonos is more helpful here, for a roomful of devices to just drop off the app is not OK IMHO and doing a factory reset just wasted an couple of hours of my time getting everything back working properly.

I give Sonos a “D-” on this one, the only saving grace is that even though the Arc Ultra disappeared from the app - the speaker still was connected to the tv and worked - I was just unable to configure.

Suggestion for sonos - save the last known working configuration, all settings and audiotuning - then if it drops off the face of the planet the last configuration could be “forced” and tried. 

Oh - and NOW that I have it working again - please note that I made NO changes to my network configuration and although I rebooted the AP in the TV room - I never rebooted the Ubiquity UDM FYI.

Sonos - you have had enough issues with your software - time to get in front of this! I would be hard pressed to purchase or recommend Sonos to anyone at this point.

GEON

This would have been a network change, as this would have forced your Sonos devices in the TV room to roam to an alternative AP, whilst the TV room AP was restarting. Did you try this initially at all?

Also check that ‘Proxy ARP’ is disabled in your UI Network App for the Wi-Fi network that Sonos is connecting to. Any UniFi AP firmware updates, either auto or manual, will also have caused a network change at some point.

Thanks craigski for the response.

No - I didn’t reboot the AP initially - as the other devices in the room (like the TV, laptop, phone...) were and are working just fine. I double checked and ‘Proxy ARP’ *is* disabled for the Wi-Fi network the Sonos is on.

I didn’t suspect the network immediately - I have done a number of AP rolling upgrades with no loss of service in the Sonos system or loosing setup in the AP on my phone. While I understand that it could be involving the network - the Sonos NEEDS to be very defensive and able to roam to another AP if need be (and there are at least two that overlap. The AP in the area that Sonos uses is my most powerful AP and has been VERY stable.

I hope that Sonos and Ubiquity can assist in how to best handle this - the thought of factory resetting my Sonos gear because of an AP firmware upgrade makes me queasy!

As I said previously - it is disappointing that Sonos doesn’t save the configuration and allow us more control to “revert or upload” settings...

GEON

Factory resetting is last resort. If happens again, try restarting your AP. UI AP firmware has been known to have issues, some AP models more than others, that may or may not have an impact:

https://community.ui.com/releases