ALSA error

[Steven Crook]

Today I've restarted Moode 10 times with no change. MPD config continued to show DAC as unavailable/switched off. I left the DAC switched on and with the USB input selected. I repeatedly changed MPD output device, saved MPD settings over a period of about 20 minutes.

• Switched MPD output device to HDMI, restarted MPD, DAC stayed on device list as off/unavailable, then restarted Moode, DAC was gone from the list.
  
• Switched MPD output device to headphones, restarted MPD, DAC not on device list
  
• Switched MPD output device to HDMI, restarted MPD, DAC not on device list 
  
• Switched MPD output device to headphones, restarted MPD, DAC on device list
  

Then, I selected the DAC as the output device saved config and got output to DAC. Restarted Moode, still had output.

I have no idea why Moode could suddenly see the DAC. 

Is there anything I can add in logging that'll explain what's happening over MPD/USB?