Comment 4 for bug 673051

It's not working at all under linux, sorry about that. I played around in HDAAnalyzer and managed to enable it but I'm not sure how to fix it properly.

In

Node 0x17 [Pin Complex] wcaps 0x40010c: Mono Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80]
  Pincap 0x00000010: OUT
  Pin Default 0x99130120: [Fixed] Speaker at Int ATAPI
    Conn = ATAPI, Color = Unknown
    DefAssociation = 0x2, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Connection: 1
     0x0f

I checked the OUT widget control checkbox so it looks like this and it is enabled

Node 0x17 [Pin Complex] wcaps 0x40010c: Mono Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: 0x00
  Pincap 0x00000010: OUT
  Pin Default 0x99130120: [Fixed] Speaker at Int ATAPI
    Conn = ATAPI, Color = Unknown
    DefAssociation = 0x2, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Connection: 1
     0x0f