So Janina, on Saturday I started writing the tool you are asking about
below. It works fine on the two machines I have tested on, but obviously,
it is new code which needs more testing.
Grab it from http://www.sanote.co.za/downloads/sam-latest.tar.bz2
Extract: tar jxvf sam-latest.tar.bz2
cd sam
and read the README.md for more details.
Janina, I hope you can give it a spin as you are the person with the most
sound devices in one machine I know about.
I am no expert on alsa, so do not expect too much.
Feedback is welcome.
Kind regards, Willem
On Fri, 5 Apr 2019, Janina Sajka wrote:
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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
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