[alsa-devel] [REGRESSION] Headphones no longer working on MacPro6, 1 with 4.4

[Takashi Iwai]

On Tue, 24 May 2016 18:41:06 +0200,
Laura Abbott wrote:
> 
> Node 0x10 [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
>   Amp-Out caps: ofs=0x42, nsteps=0x42, stepsize=0x03, mute=1
>   Amp-Out vals:  [0x42 0x42]
>   Pincap 0x0000001c: OUT HP Detect
>   Pin Default 0x002b4020: [Jack] HP Out at Ext N/A
>     Conn = Comb, Color = Green
>     DefAssociation = 0x2, Sequence = 0x0
>   Pin-ctls: 0xc0: OUT HP
>   Unsolicited: tag=01, enabled=1
>   Power states:  D0 D3 EPSS
>   Power: setting=D3, actual=D3

This pin is powered off, because...

> 	control.18 {
> 		iface CARD
> 		name 'Mic Jack'
> 		value false
> 		comment {
> 			access read
> 			type BOOLEAN
> 			count 1
> 		}
> 	}
> 	control.19 {
> 		iface CARD
> 		name 'Line Out Phantom Jack'
> 		value true
> 		comment {
> 			access read
> 			type BOOLEAN
> 			count 1
> 		}
> 	}
> 	control.20 {
> 		iface CARD
> 		name 'Headphone Jack'
> 		value false

The headphone jack isn't detected.
Meanwhile,

> 	control.22 {
> 		iface CARD
> 		name 'SPDIF Jack'
> 		value true

SPDIF jack is detected.  This might confuse PA.

In anyway, the alsa-info.sh output you gave doesn't help for analyzing
the issue while the headphone is plugged.  It is off when unplugged.
It's the designed behavior.

So, please give the information during the headphone is plugged (but
still doesn't produce the sound from the headphone).


Takashi