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SubjectRe: snd_hda_intel headphone output disabling upon complete insertion of plug
On Tue, Oct 08, 2013 at 02:34:33PM -0700, Mark Knecht wrote:
> On Tue, Oct 8, 2013 at 2:07 PM, <lkml@pengaru.com> wrote:
> > Hello list,
> >
> > Somewhere between 3.11.0-rc7-gfa8218d and 3.12.0-rc4-g8b5ede6 this
> > broke.
> >
> > The machine is an x61s thinkpad, with the headphone output unmuted and
> > headphones partially inserted sound is audible. If the output is muted,
> > the output shuts off. With the output unmuted, upon inserting the
> > headphone plug fully the output shuts off following a blink of a delay.
> > If I slowly remove the headphone plug returning it to a partially inserted
> > state, the audio returns after another delay.
> >
> > It seems like a bug in the headphone amplifier power management, as if
> > it's doing the inverse of what it needs to do. I'll try find time to
> > bisect, just wanted to get this out there though in case any of you
> > recognize the problem and know what might have caused it.
> >
> > Regards,
> > Vito Caputo
>
> Sometimes across kernel revisions I've had problems like this.
> (Although not that specific one!) It seems that the asound.state file
> format changes and alsa renumbers their internal controls. You might
> try saving the existing file elsewhere and then setting up alsa again
> from scratch. That solved my last problem of that type.
>

NAK, has no effect. Looking at the diff between the revisions under
sound/pci/hda there appears to be quite a bit of activity. Hopefully I
can get around to bisecting this weekend. Leaving the headphones 90%
inserted is workable for now.

Regards,
Vito Caputo


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