Comment 4 for bug 1023734

ports:
  analog-output: Analog Output (priority 9900, available: unknown)
   properties:

  analog-output-headphones: Headphones (priority 9000, available: unknown)
   properties:

 active port: <analog-output-headphones>

do you mean pulseaudio won't work when your front audio panel support Jack detect ?

line out has higher priority than headpone