Which NAS is it where BubbleUPnPServer is running on? I had it on a Synology DS213+ that was able to deep sleep (what current Synology NASs are not capable of) and did not have such problems. The only problem of this device was that Bubble became too slow after playing some tracks. With a newer DS418play (with faster CPU and as I think most important: more memory) it works much faster.
If you restart the bubble server does it take a while (1-2 minutes or more) until it finds your streamer? Or does it work in about less than 30 seconds again? If it takes longer it may be an IGMP problem so that broadcast packages are lost. Maybe this also has to do with loosing the streamer after the NAS went to sleep?
Do you switch off the streamer, too?
If you turn off the streamer it might get a new IP address on startup. It could be a good idea to configure your router (that manages the ip addresses for all devices in your LAN) to always hand out the same ip address to your streamer.
Thanks for the reply - much appreciated. My replies:
The NAS is an HP proliant microserver - I can't remember the model number but its effectively a mini-ITX motherboard and a PSU in a box that can house 4 disks. I don't experience any performance problems transcoding on this.
I would say that when I restart bubble it is 1-2 mins. I remember reading that IGMP could cause problems, so I switched it off on both my network switch and modem router. I don't really understand IGMP, but switching it off hasn't had much effect.
No I don't switch off the streamer. The 272 and the NAS both have static IP addresses issued by the modem router.
The annoying thing is that the losing contact problem appears intermittent - if the laptop where I run kazoo sleeps for a short time, often it re-establishes contact when I wake it up.
Its very annoying - apart from this, everything works well and sounds very good! I just lose control every now and then!