I have a similar problem with a digi+ headphone socket output.
New Pi3 + HifiBerry Digi+ (jack socket version)
Clean install of latest Max2Play
No sound at all from Digi+ output – only from Pi’s own headphone socket.
I’ve tried all the suggestions – disabled the Pi’s own output, disabled bluetooth, activated the USB soundcard in audioplayer advanced settings, rebooted several times – nothing.
And now even worse Squeezelight won’t start – error message:
„Trying to launch … NOT successful Click here to show detailed information
squeezelite: pcm_params.c:170: snd1_pcm_hw_param_get_min: Assertion `!snd_interval_empty(i)‘ failed.“
Any help out there please would be appreciated.
I’ve mounted the HifiBerry using nylon spacers rather than metal ones. I hope all the conncections between Pi and HifiBerry are via the header pins and metal spacers are not required for a ground connection!
Also the HifiBerry worked OK when it was in a Pi2, just not in my shiny new Pi3 🙁