Re: [Alsa-user] USB sound card with no simple controls

[Greg E. <ge...@nc...>]

On Mon, 09 Nov 2009 12:38:16 +0100
Clemens Ladisch <cl...@la...> wrote:

> Greg Erwin wrote:
> > I have an M-Audio Jamlab usb sound card.  It works, but It doesn't
> > seem to have any simple controls:
> > 
> > $amixer -c1 controls
> > numid=1,iface=MIXER,name='PCM Playback Switch'
> > numid=2,iface=MIXER,name='PCM Playback Volume'
> > numid=3,iface=MIXER,name='Mic Capture Switch'
> > numid=4,iface=MIXER,name='Mic Capture Volume'
> > 
> > $amixer -c1 scontrols
> > amixer: Mixer hw:1 load error: Invalid argument
> 
> What is the output of "amixer -c1 contents"?
> 
> 
> Best regards,
> Clemens

$ amixer -c1 contents
numid=1,iface=MIXER,name='PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=2,iface=MIXER,name='PCM Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=319,step=0
  : values=158,158
  | dBscale-min=-127.50dB,step=0.39dB,mute=0
numid=3,iface=MIXER,name='Mic Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
amixer: Control hw:1 element read error: Invalid argument

numid=4,iface=MIXER,name='Mic Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=292,step=0
  : values=255,264
  | dBscale-min=-127.99dB,step=0.50dB,mute=0

Maybe I should have just done this in the first place:
http://www.alsa-project.org/db/?f=7abc9069166e8550fca77ccb7f3acd5d11cf6e19 
Amazing script.