Sonos Arc Randomly Rebooting

What did Sonos Support say, when you called in with this issue? I watched about 6 hours of TV/movies last night, I had no interruptions on mine. 

Any chance it is a power issue?

Is the wall socket in good condition and wires tight?

Do you have a UPS you could plug it into to test?

Isn’t a power issue, I bought and arc ultra and moved this arc unit into another room. So it has gone from being connected to two rears and a sub to just a sub. It’s now doing the same thing it did previously. All devices are wired with wifi disabled.

Since ‘wired’ is the secondary method of connection, not the primary, I’d at least try it with the radios/wifi turned on, on all devices, just as a test. But I’d still call Sonos Support to discuss it.

Everything is wired with WiFi disabled because sonosnet is janky and causes loops if not configured correctly / requires RSTP to be disabled, legacy STP enabled and link costs enabled on switches. Would be great if SONOS could get with the times.

Uploading diagnostics to SONOS doesn’t help because the diagnostics only contain details from boot, and since it dies and reboots, those logs are lost. Is there any way to stream the logs out of this thing to another location before it dies to see what is causing it to panic?

I wouldn’t think logs would be lost over reboots, just factory resets, but I certainly don’t know for sure  where they’re stored locally, either. 

Have you tried, and gotten confirmation that they’re lost, directly from Support?

Loops, as far as I’m aware, are caused by multiple devices being wired to an improperly set managed  router. Probably Sonos Support can help you there, but I’ve only seen that occur when more than one device is connected. When on WiFi, there should not be any possibility of internet device ‘loops’. 

I’m suspecting an ARC intermittent hardware issue.

With respect to loss of diagnostic data because of a reboot, only the very latest details will be lost. There is a buffer of high detail that rolls over after approximately 10min. Longer term details, such as network setup changes will survive a reboot. To some extent a note that there was a network “error” of some sort will be kept for a while, but the immediate details will be lost when the buffer rolls over or is purged by a reboot. SONOS support can trigger additional data logging that will survive a reboot.

Until you are transferred to a higher level of support that can enable and access the enhanced logging, you can send occasional diagnostics on speculation. It’s mostly chance, but you might catch helpful, transient detail. Certainly, the string of diagnostics will expose network setup issues.

From what SONOS support have said, it only keeps logs from boot.

Is the current recommendation to use WiFi for everything or just use the soundbar as the ethernet bridge?

My Arc Ultra also has started rebooting itself randomly.  Just started doing it this past week. 

Call support and get a ticket opened. Sooner is always better.