A question about yell on a laptop

Leslie Jensen leslie at eskk.nu
Sun Dec 13 12:19:49 UTC 2009



Polytropon skrev:
> On Sat, 12 Dec 2009 15:54:43 +0100, Leslie Jensen <leslie at eskk.nu> wrote:
>> That's what troubles me, I'm used to use Yell so I'm certain that my 
>> config is ok. One thing I've been made aware of is that a laptop 
>> computer maybe do not have a "speaker". Only a sound card will produce 
>> sound in the speakers. Any comments on that?
> 
> It's quite possible that your laptop doesn't have the
> "PC speaker functionality".
> 
> Traditionally, the PC speaker was completely independant
> from any sound cards. It even was present when no sound
> card did exist. Early laptops also included such a speaker.
> 
> More modern laptops then included a sound card and the
> speaker (three speakers internally), but quicky the
> PC speaker got removed, and access to its functionality
> is provided through the sound card, offering a kind of
> "PC speaker API".
> 
> And maybe this "PC speaker API" isn't present on your
> laptop anymore.
> 
> Does dmesg show any "speaker" lines, such as this?
> 
> 	speaker0: <PC speaker> port 0x61 on acpi0

No entry at all!


> 
> And even if it is shown this way, it doesn't imply that
> the "PC speaker API" of the sound card is handling the
> corresponding calls.
> 
> Finally, and maybe you've already checked it, what is
> the mixser setting for the PC speaker channel of the
> sound card, if it does exist?

mixer setting is

Mixer vol      is currently set to  84:84
Mixer pcm      is currently set to  85:85
Mixer speaker  is currently set to  99:99
Mixer mix      is currently set to   0:0
Mixer rec      is currently set to   0:0


/Leslie


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