Groove On

If anyone needs to get the 3.5mm audio jack working on the N2+, here's one method.
 
1. Edit or create /etc/asound.conf with these lines. Copied directly from the Hard Kernel Ubuntu setup.
 
pcm.!default{     type hw     card 0     device 1 } ctl.!default{     type hw     card 0 }  
2. Run this script to turn on the 3.5mm audio in alsamixer. The settings are listed in the same order as in alsamixer.
#!/bin/bash  # 3.5MM JACK, set to max gain  amixer sset 'ACODEC' '255' # 3.5MM JACK - set in/out channels (src/sink) amixer sset 'FRDDR_B SINK 1 SEL' 'OUT 2' || true amixer sset 'FRDDR_B SRC 1 EN' 'on' || true # 3.5MM JACK amixer sset 'TOACODEC SRC' 'I2S C' || true amixer sset 'TOACODEC OUT EN' 'on' || true amixer sset 'TOACODEC Lane Select' '0' || true # SAVE NEW SETTINGS alsactl store  

https://docs.armbian.com/Release_Changelog/#v2105-2021-05-09