Bluetooth audio stalling (maybe the whole phone)

[wibble]

I've previously experienced bluetooth dropouts on the pinephone when a background process has briefly hogged the CPU. You could try looking with something like htop while repeating the behaviour to see if the transition triggers a task that may be causing issues. Someone more skilled can probably point to a method to get it logged automatically. Another possibility is that there's something not configured or implemented correctly with the wifi/bluetooth chip driver since they share the same chip and antenna - they're supposed to have mechanisms to avoid interfering with each other, but that may not work under all circumstances. I'm not sure how you'd look into that though.