Is there any information anywhere on the AUX 3.5mm audio port jack? There’s nothing in the User Manual. If I plug in a headset, I only get sound on the left. Is this also a microphone jack? I’m using Linux Mint 20. I tested the sound by using the Sound Settings -> Test panel sound applet. If I use the HDMI port, left and right work. I hope the boards not defective or the jack is bad because SEED support sucks and they won’t replace the board for any reason. Please don’t expect me to take a video or a photo of the Odyssey and email it to you - there are no moving parts. I was hoping to use the Odyssey as a SDR HAM radio and that’s why I need the headphones to work.