Passthrough via S/PDIF without pulse

[Skywatch]

I have tried various combinations in /boot/config.txt and /etc/modules and cannot replicate your situation.

When passthrough is not selected, no sound comes through (as you might expect).

What is the source audio you are using? ?How many channels? What type of encoding? etc...

Do you only have the one pi and one dac? Just wondering if a comparison might be possible???

I know what it is like to be away from your pi! - So if you need it and don't want it to crash until you get back to it then that is fine!

Also can you again try aplay -l (note lower case 'l' and *not* upper case 'L')