Audio stuck at 0%

Hi all,

New Picade build here, I’ve followed the instructions carefully and taken the default build image. I’ve not really done anything unusual - yet. But despite all that my audio isn’t working. I’ve checked all the wiring and cables, all seems good.

The symptoms are that whenever I try to change the volume in EmulationStation for example to:

80%, Default, PCM, ON, ON.

Then hit ‘back’, when I return to the sound settings the volume has reset to 0%.

Any ideas?