amixer help

[Janina Sajka]

Hi, Glenn:

I'm not aware of a way to manage "all" through a single command. Maybe
someone has written a tool like that. Part of the problem is that each
sound card is different, providing more or fewer interface options. And,
if you have more than one card, like I do, things get even more complex.

Here's how to enumerate the cards you have:
aplay -l

Now, for each individual card, where x stands for the card number,  you can query available controls like so:

amixer -Cx controls

You'l find some cards have lots of controls, and others very few. If
you're looking only for volume, grep is your friend like so by way of
example:

amixer -c2 controls |grep -i volume

Of course, if you have but one card, you don't need the -c switch.

Now, to get the current setting for any control, again where x
identifies the card, and y identifies the numeric id you discovered with
the grep above, do like so:

amixer -cx cget numid=y


Lastly, to set the volume:

amixer -cx cset numid=y [value]

hth

Janina

Glenn At Home writes:
> Hi,
> I'm reading the amixer manpage and I'm unclear on how to set the volume output to 100%.
> Is there a simple command to make sure that all is unmuted and at 100%?
> Thanks
> 
> 
> Sent From My Tabletop
> N0YJV   shade tree computer guy
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-- 

Janina Sajka

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:	http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures	http://www.w3.org/wai/apa