[alsa-devel] regression: from 3.8 to 3.9: headphones output no sound on Intel HDA, codec VIA VT1802

[Takashi Iwai]

At Wed, 22 May 2013 23:06:53 +0200,
Alex Riesen wrote:
> 
> Ping? Can I do something for you?

Sorry, no time for now.  I'll take a look at this again tomorrow or in
the next week.


Takashi

> 
> Regards,
> Alex
> 
> On Sat, May 18, 2013 at 10:29 PM, Alex Riesen <raa.lkml at gmail.com> wrote:
> > Sorry for delayed replies. I have not much time for this lately.
> >
> > On Fri, May 17, 2013 at 8:04 AM, Takashi Iwai <tiwai at suse.de> wrote:
> >>> Well... It seems that something went unnoticed. This command seems
> >>> to be essential for this (and the revised) patch to get the headphone
> >>> output at all:
> >>>
> >>>         hda-verb /dev/snd/hwC0D0 0x25 SET_PIN_WID 0xc0
> >>
> >> Do you mean that the headphone doesn't work without this even after
> >> the patch?  It's weird that the alsa-info.sh output you attached below
> >> already contains it, i.e. 0x25 showing 0xc0.
> >
> > Yes. It is after the latest patch.
> >
> >> Or, is the attached output the result after you ran hda-verb like the
> >> above?
> >
> > Er, yes.
> >
> >>> It does. And there is no output from the speakers.
> >>
> >> Hmm.  I'm confused.  I thought you mentioned that the speaker is
> >> unmuted?
> >
> > I think I am as confused as you, if not more. I redid the tests
> > but recorded everything this time with script(1). It is without
> > timing information (would be boring anyway, with me figuring
> > the arguments), so just cat it. Just in case: it sets xterm title.
> > The transcript is in headphone.gz.
> >
> >> - Use the patched kernel, play without headphone, confirm that the
> >>   speaker works.  Get alsa-info.sh output at this point.
> >
> > That's 3.9.2-wo-headphone.alsa.gz
> >
> >> - Plug the headphone, play, and check whether the headphone works and
> >>   the speaker is muted.
> >>   Again, get alsa-info.sh output at this point, no matter whether the
> >>   headphone works or not.
> >
> > That's 3.9.2-w-headphone.alsa.gz. Headphone not working, speakers
> > correctly muted.
> >
> >> In anyway, if you make things working, please give exactly what you
> >> did, and take again alsa-info.sh output, too.
> >
> > 3.9.2-w-headphone-working.alsa.gz. The working state is lost after
> > unplugging and replugging the headphones. It is different to the
> > case when the alternate channel is used (Independent HP): replugging
> > does not break the output than.
> >
> > Sorry for confusion and thanks!
> >
> > Regards,
> > Alex
>