Apologies for bringing this one back from the dead..
I'm using Rpi3 and Picade HAT. When I shut down I notice an ALSA underrun message.
Sound is dreadful with a 4ohm speaker, almost like its delayed or slowed down/ not getting enough power. I've tried lowering volume, (although Id like to lower volume on the picade hat, but cant work out how to do it. This might reduce the picade power requirement and push it onto the Rpi3 as above suggests?)
Has anyone seen ALSA underrun before? I cant find much relating to Picade, so I guess not and its just peculiar to my set up?
Any guidance grateful received, I don't have the coding ability to really understand the google searches, sadly....
I'll keep reading!