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

drago01 drago01 at gmail.com
Fri Feb 12 20:38:12 CET 2010

On Tue, Jan 12, 2010 at 10:14 AM, Takashi Iwai <tiwai at suse.de> wrote:
> 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 and; 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.


Sorry I somehow missed this mail.

I have created a bug report in the meantime:

Which does contain alsa-info.sh output before and after suspend.

If you require any other info please ask.

We can move the discussion to the bug if you prefer that.


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