Re: My laptop Speakers Doesn't Mute then i connect the headphones on FC13

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  On 07/20/2010 10:06 AM, fred smith wrote:
> On Tue, Jul 20, 2010 at 09:59:11AM -0700, JD wrote:
>>    On 07/20/2010 08:29 AM, David A. Paredes Rios wrote:
>>> With the command alsamixer -c 0  i get this options:
>>> Master --- PCM --- Mic -- Mic Boos --- Beep --- Dock  --- Dock Mic
>>> ---- Dock mic boost --- Internal mic --- Internal mic boost
>>>
>>> Nothing else with alsamixer -c0
>>>
>> I hate to be an harbinger of bad news - but...
>> muting the pc speakers when you plug in the headset
>> is done by the headset jack or soundcard itself, and
>> not by software. It is a mechanical event. Pushing in
>> the headset causes a disconnect in the loop that feeds
>> the speakers.
> that's what I always thought, too, that it was like the old-fashioned
> stereo where there was a mechanical switch in the headphone jack that
> broke the circuit to the speakers.
>
> but that's not the way modern laptop audio works. or if it is, then
> I'm totally confused. why? 'cause on my eeepc 901 I had the same
> problem, i.e. plug in the phones (or external speakers) and the internal
> speakers continue to "speak".
>
> Not until I found the right incantation for the config file this thread
> speaks of did the speakers shut off when something was plugged into the
> headphone/line-out jack.
>
> Now if that's not  under software control, I don't know how else you
> would describe it.
>
> Fred
>
I have no such incantation on my machine :)
In fact I don't even have that file.
So, perhaps my machine is too old (bought in 2004).

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