Comment 6 for bug 1521987

Vt1708s is a 8 channel hda codec

If your motherboard have line out side jack (grey jack and side playback volume control),

Headphone can be connected to node 0x16 or node 0x25, either share front or side playback volume control

Node 0x1d [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
Control: name="Headphone Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Independent HP", index=0, device=0
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x80 0x80]
Pincap 0x0000233c: IN OUT HP Detect Vref caps: HIZ 50 100
Pin Default 0x0221401f: [Jack] HP Out at Ext Front Conn = 1/8, Color = Green DefAssociation = 0x1, Sequence = 0xf
Pin-ctls: 0xc0: OUT HP VREF_HIZ Unsolicited: tag=05, enabled=1
Power states: D0 D1 D2 D3
Power: setting=D0, actual=D0

Connection: 2
0x16* 0x25