I have the latest volumio installed on a RaspberryPi. My DAC is an Emotiva XDA-2.
Sometimes upon bootup there is no sound coming through the USB DAC. A random small number of reboots (1-3) solves the problem. Sometimes it just plays well, sometimes it needs a reboot.
I tried to restart a bunch of daemons and etc, none of which seemed to work. I had the same issue with raspify too, so I guess it has to do with how the pi communicates with the DAC.
Any ideas where to look when the issue happens? What should I restart to “mimic” a reboot, without the reboot itself?