Comment 4 for bug 1251127

does switch-on-port-available switch to auto-null when both mic and line in jacks are not plugged

 control.17 {
  iface CARD
  name 'Mic Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.18 {
  iface CARD
  name 'Line Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }

 control.19 {
  iface CARD
  name 'Line Out Jack'
  value true
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.20 {
  iface CARD
  name 'Front Headphone Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.21 {
  iface CARD
  name 'Speaker Phantom Jack'
  value true
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }