I am attempting to get an electret microphone connected to the audio jack of the nanopi M2A board working. I'm running Debian Jessie and audio using Alsa only. Linux 3.4.39-s5p4418 #3 SMP PREEMPT Fri Aug 18 14:06:40 HKT 2017 armv7l GNU/Linux I can get the mic to sort of work by fiddling with the con...