Same problem ubuntu 18.04
ran pavucontrol and saw "line-out (unplugged)"
plug in my headphones and "line-out unplugged" changed to: line-out (plugged in)
Same problem ubuntu 18.04
ran pavucontrol and saw "line-out (unplugged)"
plug in my headphones and "line-out unplugged" changed to: line-out (plugged in)