[alsa-devel] [bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Takashi Iwai]

At Mon, 10 Jan 2011 23:31:19 +0530,
Nirbheek Chauhan wrote:
> 
> On Mon, Jan 10, 2011 at 8:19 PM, Takashi Iwai <tiwai at suse.de> wrote:
> > At Mon, 10 Jan 2011 14:54:25 +0100,
> > Takashi Iwai wrote:
> >>
> >> At Wed, 5 Jan 2011 13:07:41 +0530,
> >> Nirbheek Chauhan wrote:
> >> >
> >> > Hello,
> >> >
> >> > Upon upgrading to 2.6.37,
> >> > auto-muting-laptop-speakers-on-headphone-connect stopped working, and
> >> > the headphone connector completely disappeared from alsamixer as well
> >> > as the pulseaudio volume control panel. The headphone jack was still
> >> > transmitting sound, though.
> >> >
> >> > I bisected the problem, with 'good' being v2.6.36, and found the
> >> > commit below as the first bad commit. Reverting it on v2.6.37 fixes
> >> > the problem. I also tried the latest alsa-kernel master git tree,
> >> > which had the same problem.
> >> >
> >> > alsa-info when 'good':
> >> >
> >> > http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210
> >> >
> >> > alsa-info when 'bad':
> >> >
> >> > http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537
> >> >
> >> > Note: both were taken without X running, before pulseaudio came up.
> >> >
> >> > ================
> >> > 03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
> >> > commit 03642c9a444079aa13f0864383a8f9ca04bfd198
> >> > Author: Takashi Iwai <tiwai at suse.de>
> >> > Date:   Wed Sep 8 15:28:19 2010 +0200
> >> >
> >> >     ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()
> >> >
> >> >     In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
> >> >     array during the headphone-reassignment workaround.  This patch clears
> >> >     the unused array members.
> >> >
> >> >     Signed-off-by: Takashi Iwai <tiwai at suse.de>
> >> >
> >> > :040000 040000 34724336a75f74263423f28d64450d65e5ed948d
> >> > 8d136fce8661ad2df35ac3c4a9ca1c712c9833ed M  sound
> >> >
> >> > ================
> >>
> >> It seems that the driver worked casually in the earlier versions :)
> >> Does the patch below fix your problem?
> >>
> >> Note that the "Headphone" control will still not appear even with this
> >> patch, but these two outputs are controlled by "Front" and "Surround"
> >> controls.  The lack of "Headphone" is no regression but simply it
> >> shouldn't have been there.
> >>
> >> I'll work on 2.6.38 tree for better handling of multi headphone
> >> cases.
> >
> > The patch is below.  Give it a try.
> >
> 
> This patch made the jacks and their alsamixer controls function
> exactly as I expected them to!
> 
> (I have to admit, at first I applied only this patch without the
> previous one, and that made things really weird. I had fully
> documented the weirdness before I realised that the first patch might
> not have been *just* for stable)
> 
> alsamixer layout:
> [Master] [Headphone] [Headphone 1] [Speaker] [PCM] [Mic 1] [Mic Boost 1]
> 
> alsa-info:
> http://www.alsa-project.org/db/?f=34790490c2d70f019b14b22f8e94289425b1bcd6
> 
> * `Speaker` is only toggle-mute
> * `PCM` has no toggle-mute
> * `Master` affects audio in all outputs
> * Inserting a jack into either headphone socket mutes the laptop speakers
> * `Headphone` and `Headphone 1` control their respective headphones
> (maybe they should be named Headphone 1, Headphone 2?)
> * `Speaker` mutes the laptop speakers
> * `PCM` affects audio in all outputs
> 
> All this is without pulseaudio running. Pulseaudio doesn't seem to be
> able to handle multiple headphones nicely, and I can't control which
> connector an audio stream goes to at all (not a regression, I would
> note). But I guess this one is for the PA devs :-)
> 
> I'll be using both these patches, and will report any bugs I find.

Good to hear.  Both patches are now in sound git tree and included
in the upcoming pull-request for 2.6.38 kernel.


thanks,

Takashi