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

[Takashi Iwai]

On Thu, 02 Jun 2016 23:20:24 +0200,
Laura Abbott wrote:
> 
> On 05/24/2016 10:54 AM, Takashi Iwai wrote:
> > 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
> >
> 
> According to the reporter:
> 
> "Actually, that information was when the headphones were plugged in,
> but the detection is incorrect.  (Linux thinks the headphones are
> unplugged, when they are actually plugged in."

It implies that the pin setup mismatches with the actual hardware.
You need to figure out which pin corresponds to the actual I/O by
yourself, e.g. via hdajackretask or other tool.

The apparent regression just revealed the already buggy setup.


Takashi