[alsa-devel] Question about "control names"

Juergen Beisert jbe at pengutronix.de
Fri May 23 10:28:21 CEST 2008


I'm playing with the control names of my "snd_kcontrol_new" controls. When I'm 
using "PCM Playback Switch" and "PCM Playback Volume" alsamixer shows me a 
slider with a switch at its bottom. That's what I expected.
But when I'm using a second set ("line in" to "line out" bypass), with "Line 
Bypass Capture Switch" and "Line Bypass Capture Volume" control names, its 
confusing (BTW: "Line Bypass Capture Volume" is of type 

The "Line Bypass Capture Volume" control is shown on the [Playback] page with 
the name "Line Byp" and the default value. I can walk through the enumerated 
values. But the "Line Bypass Capture Switch" is shown on the [Capture] page 
in alsamixer as:

  L    R

<Line Byp>

What does it mean? Problem of alsamixer or the name of this set?

Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
 Pengutronix - Linux Solutions for Science and Industry
    Handelsregister: Amtsgericht Hildesheim, HRA 2686
         Vertretung Sued/Muenchen, Germany
   Phone: +49-8766-939 228 |  Fax: +49-5121-206917-9

More information about the Alsa-devel mailing list