microphone not workign pulseaudio code example

Example 1: ubuntu microphone does not work

rm -rf ~/.config/pulse/
# Log out
# Log back in
# go to desktop settings/'sound'
# insert headphones
# Go to 'input' section
# Do microphone audio test on each available device

Example 2: pulseaudio jack sink missing channels

$row = $result->fetch_assoc();