You have to fix the driver first if HP and speaker must share volume control


https://bugzilla.kernel.org/enter_bug.cgi?product=Drivers

Sound(ALSA)

Node 0x02 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out R/L
  Control: name="Speaker+LO Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Control: name="Speaker+LO Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Device: name="STAC9221 A1 Analog", type="Audio", device=0
  Amp-Out caps: N/A
  Amp-Out vals:  [0x79 0x79]
  Converter: stream=5, channel=0
  Power states: 
  Power: setting=D0, actual=D0
  Delay: 13 samples

Node 0x0a [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x0000173f: IN OUT HP Detect Trigger ImpSense
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x0221101f: [Jack] HP Out at Ext Front
    Conn = 1/8, Color = Black
    DefAssociation = 0x1, Sequence = 0xf
  Pin-ctls: 0x40: OUT VREF_HIZ
  Unsolicited: tag=02, enabled=1
  Connection: 1
     0x02

Node 0x0d [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x0000173f: IN OUT HP Detect Trigger ImpSense
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x90170110: [Fixed] Speaker at Int N/A
    Conn = Analog, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x02

Node 0x0f [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x00000037: IN OUT Detect Trigger ImpSense
  Pin Default 0x02011020: [Jack] Line Out at Ext Front
    Conn = 1/8, Color = Black
    DefAssociation = 0x2, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x05

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/plain/sound/pci/hda/hda_generic.c


case AUTO_PIN_HP_OUT:
		/* if the primary channel vol/mute is shared with spk volume,
		 * don't name it as Headphone
		 */
		if (!ch && cfg->speaker_outs &&
		    !path_has_mixer(codec, spec->speaker_paths[0], ctl_type))
-			break;
+                       return "Speaker+HP";
		/* for multi-io case, only the primary out */
		if (ch && spec->multi_ios)
			break;
		*index = ch;
		return "Headphone";

You also need to add "Speaker+HP" to slaves of virtual master 

After the driver rename the shared volume control"Speaker+HP" , you need to change pulseaudio conf to avoid headphone mute the shared volume control similar to


http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/mixer/paths?id=aec811798cd883a454b9b5cd82c77831906bbd2d

==> Best config: lo_type=2, wired=1, mio=1
multi_outs = a/f/0/0 : 2/5/0/0 (type HP)
  out path: depth=2 '02:0a'
  out path: depth=2 '05:0f'
spk_outs = d/0/0/0 : 2/0/0/0
  spk path: depth=2 '02:0d'

as the driver create surround playback volume for the line out jack

it seem that the driver create incorrect headphone jack kctl

the alternative workaround is to change two output jacks to line out instead of headphone by hdajackretask

pulseaudio cannot handle Front Headphone jack with index 1

control.17 {
		iface CARD
		name 'Front Headphone Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.18 {
		iface CARD
		name 'Front Headphone Jack'
		index 1
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.19 {
		iface CARD
		name 'Speaker Phantom Jack'
		value true
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}

http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/analog-output-headphones-2.conf

what is the usage of headphone2.conf ?

seem no sound driver implemenet [Element Headphone2]

just installed arch linux using the 4.1 LTS kernel and the headphone jacks work fine

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