Problem: why does a library update kill the queue?

I’ve not heard of this issue before, a room queue does not have any direct bearing on the library indexing feature, as far as I’m aware. What does the room queue consist of and what Sonos product(s) is this happening to? What happens if you run the library-index manually via the App with the same/similar queue in place? Have you checked to see if the product(s) are perhaps coincidentally dropping off the network/rebooting for some reason, yet to be established. 
 

There are several ways to clear a room queue, for example it can be done by some third party Apps using the Sonos API - is it possible something else is clearing the queue to a similarly set daily schedule? 

Thanks for stepping in. The queue consists of music files from my NAS. It's happening to a Port, my system is on S2. If I re-index manually nothing happens to the queue in question. And, no, nothing is dropping off the network. As far as I know, there are no third partiy apps that use the Sonos API. I have a very straight forward system.

As soon as I got aware of the problem I tried to diagnose it by changing the daily time of indexing: didn't help, at the index moment the queue disappeared. Today I sent a diagnosis a couple of minutes after the event. I'm curious to know what Sonos will be able to make of it.

@beynym,

If your post isn’t  picked up here in the community (not all are, if Staff are busy), then note that you can also chat online to Staff via this LINK about your issue and diagnostic submission, at certain times of the day. If you do get an answer on this one I’d be intrigued to know what caused the Port queue to clear. 👍

Great idea. I opened 2 chat requests, one on the US site and the other on the NL site. Been waiting for almost 30 mins now…

Odd. My library auto updates every night. Also running S2 and my queues are from my NAS, and I just checked, there has been no change of the queues on my system from last night. The only times I see this behaviour is when there is a firmware update for the speakers themselves, and they have to do a soft reboot. At that point, my queues always go back to a single ‘starting point’ in the queue. So, I see that happen every time the firmware updates, but only at that point. 

Are you seeing it daily?
 

Indeed.  

Have noticed it several days, before I started tracking it. 

So much for Sonos Support Chat. Have waited 60 minutes on both sites, have got other things to do now. Grrrr.

Yes, similar to what Bruce mentions, the NAS library here indexes daily, but can’t say I’ve ever noticed it wipe a room queue - only time I’ve seen queues disappear, is where I either clear it manually, or reboot/power a player off/on again, or sometimes I use an iOS 3rd party App called ‘Soro’ that has the ability to do that sort of thing, amongst other tasks.

I've reproduced the problem just now. Sent in diagnostics: 1347717970.