Lost surround and sub ( after update ?)

Did you just update the app or run the update on all the speakers?

What version is shown in about my system?

The Sonos Surrounds and Sub usually connect direct to the ‘bonded’ Sonos Arc over a 5Ghz ad-hoc wireless connection, rather than to your WiFi - So perhaps see if power-cycling the Arc resolves the issue, rather than the Surrounds/Sub and just ensure the WiFi adapter has not been disabled on your Arc - see this LINK.

Thanks for your answers

All my Sonos devices are in 14.6

I went to bed yesterday with no sub and surround, It’s working this morning whithout doing anything.

I’ ll see if it happens again, and check the arc wifi side

You didn't do anything but your router almost certainly refreshed IP address leases overnight.  Your router probably got a bit confused when rebooting speakers as part of the update

You can remove the risk of this happening again by reserving IP addresses for your Sonos speakers in your router's DHCP settings (if it lets you)

Thanks John for you input

I already have DHCP reservation for all Sonos Devices (and didn’t have any issue for years)

The issue occured again when trying to watch content on the Apple TV 

I tried to reboot the ARC only, and retrieved my surround and sub.

i noticed that ARP resolution from my mac returns the Arc mac adress for all reserved IP (same mac for Arc, surround and sub IPs) 

i’ll check IP and ARP next time it happens

Occured Again, and now, after rebooting the Arc, surround and sub worked for few seconds, and no sound again.

I ve checked ARP when rebooting the ARC :

• ARC powered off : no ARP resolution (host down) for each devices
• ARC booting : ARP is working (no sound) and each speaker has his own mac 
• ARC booted : ARP is changed, all IPs are linked to the Arc Mac address

I think this is the normal behavior when creating a surround configuration.

I then removed surrounds and sub from the Home theatre configuration and add them again. it’s now working.

If the problem go back, I’ll contact the Sonos support

thanks again

Hi there I am also having this same issue since 14.6. Losing sub and surround audio even though in the app they show connected fine. Rebooting the arc is the only fix. I watch everything through Apple TV 

Is your arc wired to the router and is any of the sonos wired?

What is it showing in about my system wm:0 or 1?

My arc is wired to the router. No other speakers are wired. I tried unplugging to stop using sonosnet and it fixed it initially but eventually the issue returned 

I went back to sonosnet so everything is wm:0

Is wireless turned on the arc and is it showing wm:0 in about my system?