Same issue for me.

I removed bluetooth pairing from my phone, disabled the battery saver option, checked my unifi dream machine log and my roam get great DB, tried to change 2.4 channel. Nothing helps so far, unfortunately sonos have an issue here. Roam isn't a speaker you can set up in stereo pair and forget about it. Seeing this thread is 9 months old with no resolution makes me think there won't be one. Very bad as it's misleading advertising 

The sad thing is that it worked previously, they broke something in one of the updates and now they just ignore us.

Overcomplicated product, this happens quite often with the development teams overwhelmed by their own creation.

I didn’t know this option was working before, if you go to Sonos site you can’t miss the fact that the Sonos Roam is a lead product for them and they do advertise the stereo pairing option, let’s hope some day they will decide to deliver.

New firmware updated on my two Roams, stereo pairing stil impossble. It was working ca. 6 moths before, now it’s brokem and seems Sonos doesn’t care at all :(

With Sonos support I identified that the problem (only one Roam playing in stereo pair) is linked to my Orange Funbox 6 router (pretty moderm, with Wifi6, actually manufactured by Sagecom), in 5GHz only (it works with 2.4GHz with Orange router and with both frequencies on my other TP-Link router). The Orange Funbox is not supported by Sonos (how convenient for them) but I have to use it as it handles my 600 Mbps fibre Internet provided by Orange. Some recent (last 6 months) FW update by Sonos broke the compatibility with Orange Funbox :(
But at least now I know where to look for the issue.

Same issue here, my Sonos Roams don’t play well with the new ASUS AX-86U WiFi 6 router. I tried both 2.4G and 5G with WiFi 6 turned on and off, same result! The Roam as the left channel works for a while, then out of nowhere stops producing sound, the Sonos app will show the Left channel as “Offline”. All the other Sonos speakers on the network work fine.

@Sonos, this is NOT Okay, we customers stay with Sonos because of your ecosystem and “supposed to be hassle free” experience. FIX THIS!!

Consider the possibility that it’s not Sonos which needs to “FIX THIS!!” sic], but ASUS. 

Did you disable Airtime Fairness as recommended?

Execuse my ranting comments, don’t usually use tones like that, trying to be the solution not the problem. I was frustrated after talking to the support rep for over an hour, we tried turning on and off some features on the Router, even switched between 2.4G and 5G with a fixed band, the problem persists. I have to point out though, Sonos’ support reps in China were very helpful, well trained and knowledgable, he tried his best helping with the problem. I submited the diagnostics from the app, unfortunately the rep couldn’t locate any problem except quoting that one Roam somehow fell “out of sync” from the other. 

Airtime Fairness was disabled the whole time, the first thing I tried. And I have an complete Sonos Arc + One + Sub setup running on the same network that works flawlessly.

Same issue here, my 2 Sonos Roams are paired, both working and stereo is playing.

Next day the pairing is gone, need to pair them again, sometimes it works , sometimes they won't pair until the next day. After using sonos for a long time (Play-1's, Bar, Sub) very happy with them, this is really disappointing.

What is the fix Sonos?

Perhaps see this other thread including the points about IP address leasing and the devices using a different wireless AP etc; all of which you can perhaps go onto test for yourself within your own network environment…

Same issue here. It used to work (upon release date) but some update broke it for sure. Now IF the pairing succeeds I get only one speaker to work, and breaking the stern pair enables the other speaker. Yup, strange. But then when I change the volume from the source it only becomes effective on 1 speaker since it doesn’t have a stereo pair.

It just doesn’t work, also not in my other house (with different WiFi obviously) so that can’t be the issue. I’m going back to old school receiver and cabled speakers and play from CD. That always works since there aren’t any software updates.

Phil

I have a stereo pair of Roams which work perfectly in every way apart form when started by Sonos alarm. Every morning I have to press the volume up button on the RH speaker which immediately brings it to life (and increases the volume to the LH speaker slightly). Left on standby permanently and start as a stereo pair in all other circumstances.

Sonos seem to have become lazy at dealing with known issues which is disappointing.

As the owner of ~25 units in two houses I expect better engagement than I get.

Have you called or spoken to Sonos about the issue highlighted, rather than mentioning it here in their user-community forum? If not, then next time you encounter the problem, immediately submit a Sonos system diagnostic report from within the Sonos App and either note/post it’s reference back here and then contact/chat with Sonos Support Staff via this LINK  and see what the Staff can suggest to resolve the matter.