06-29-2017, 05:49 PM
I'll try to find some time later today to fiddle with this, but when we had a look last night, I got one of internal mics working by just toggling the LADC input Mixer MIC1 boost Switch as it was off (one of the settings near the end in alsamixer in the playback mode) and the other 'just worked' when I plugged in a TRRS/four pole headset (and no, it wasn't the internal mic on the headset, I did check). However, I'll report back, and we can put together a post to pull all this info together in one place.