linux-kernel - Re: snd_hda_intel headphone output disabling upon complete insertion of plug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20131011164651.GE6881@shells.gnugeneration.com>
Date:	Fri, 11 Oct 2013 11:46:51 -0500
From:	lkml@...garu.com
To:	Mark Knecht <markknecht@...il.com>
Cc:	Linux Kernel List <linux-kernel@...r.kernel.org>
Subject: Re: 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@...garu.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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/