[DAC+ ADC Pro] Issues with sound capture on Raspbian


Have been using a DAC+ Pro for a while and have been extremely happy with it. Recently, I purchased a DAC+ ADC Pro to test recording some audio and had some trouble getting audio into it.

I followed all of the instructions regarding overlays etc. I have been using arecord to test the capture, but was getting no input. I got it to work once, and couldn't figure out what it was.

It turns out, I need to run aplay first. Not sure if that activates the driver or something, but after I've run aplay after a reboot, arecord will work properly.

Do you happen to know why this is? Is there a way to get around it?

Thank you.

OS: Raspbian Buster Light 

Linux kernel 4.19.97


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