[alsa-devel] HP 6930p mute button/led out of sync; fixed by suspend/resume cycle

[Takashi Iwai]

At Sun, 10 Jan 2010 15:34:02 +0100,
drago01 wrote:
> 
> On Sun, Jan 10, 2010 at 3:31 PM, drago01 <drago01 at gmail.com> wrote:
> > Hi,
> >
> > I experience an odd issue with my HP6930p laptop.
> >
> > After boot pressing the mute button/led causes the audio to be muted
> > but the sate is not reflected in software (i.e the mixer does not show
> > the control as muted).
> > However pressing after a suspend/resume cycle it works as expected.
> > The hardware mute button/led and the software control are in sync
> > (pressing the hw button toggles the mixer to mute/unmute; muting the
> > software mixer results into the led turning red).
> >
> > This was with 2.6.31.9 and 2.6.32.1; also installing alsa-drivers from
> > source does not change this.
> >
> > It seems something is not initialized correctly during boot up but is
> > done on resume, any pointers on how to debug this?
> >
> 
> (Resending to correct list)

First off, give alsa-info.sh output (run with --no-upload option) on the
very latest alsa-driver.  The mute LED is usually controlled via GPIO 3
or GPIO 1 on HP machines according to the codec chip.


thanks,

Takashi