Audio: Way to disable HDMI or set USB as default?

[TamedShrew]

I also have a SMSL DAC with a RPi4 and get this problem once in a while. I keep the RPi on, but turn off the DAC when I'm not listening to music. Unfortunately I cannot see any pattern to why it happens.

I never get the problem with my other 2 Moode setups using DACs from other manufacturers.