How do I query amixer?

lucmove · 04-01-2015, 01:18 AM

I want to get the current volume, for display with osdctl.

Code:

~> amixer scontrols
Simple mixer control 'Master',0
Simple mixer control 'Headphone',0
Simple mixer control 'Speaker',0
Simple mixer control 'PCM',0
Simple mixer control 'Mic',0
Simple mixer control 'Mic Boost',0
Simple mixer control 'Beep',0
Simple mixer control 'Capture',0
Simple mixer control 'Auto-Mute Mode',0
Simple mixer control 'Digital',0
~> amixer cget Master
Wrong control identifier: Master
~> amixer cget Master 0
Wrong control identifier: Master
~> amixer cget PCM 0
Wrong control identifier: PCM
~> amixer cget PCM
Wrong control identifier: PCM

Dammit.

'amixer get Master' gives me what I want, but it's verbose and I'll have to write a script to parse and isolate the exact value. I can do that, but surely I am using the cget command wrong, and maybe it will make it all simpler.

dijetlo · 04-01-2015, 01:39 AM

awk -F"[][]" '/dB/ { print $2 }' <(amixer sget Master)

---------- Post added 04-01-15 at 02:40 AM ----------

Let's try that again...

Quote:

awk -F"[][]" '/dB/ { print $2 }' <(amixer sget Master)

---------- Post added 04-01-15 at 02:40 AM ----------

Let's try that again...

Quote:

awk -F"[][]" '/dB/ { print $2 }' <(amixer sget Master)

dijetlo · 04-01-2015, 02:04 AM

Downloaded and installed AlienBobs Plasma desktop, was running like a champ, very light and responsive, however this double post thing started after I switched to it, if you would be so kind as to let me test this in fluxbox and see if the double post issue is related to the plasma environment...

lucmove · 04-01-2015, 07:26 AM

Thanks, but I already knew how to parse the verbose output. I still don't know how to use the 'amixer cget' command.

dijetlo · 04-01-2015, 08:05 AM

Sorry, looked at your question and assumed the 'c' was a typo.

Quote:

cget - A utility that retrieves a specified file from each node of a cluster and places it into the specified target directory.

Once you get the amixer.state from each member of the cluster, you'll still have to grind it for the data you want.