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amixer - controls value for capture

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Sebastien
2018-07-26
2018-08-01
  • Sebastien

    Sebastien - 2018-07-26

    Hi!

    Havins a strange issue here on a old centos 5/Alsa config for a Sound Blaster Audigy SE card using the CA0106 driver. I'm unable to toggle or to unmute the capture in the mixer, he never get activated so I'm streaming only one song, the sound of silence.. ;-)

    I think the issue is here, the Capabilites seems to be wrong, I think I sould see cvolume as the capture volume and note the pvolume as the playback one :

    Simple mixer control 'CAPTURE feedback',0
    Capabilities: pvolume
    Playback channels: Front Left - Front Right
    Limits: Playback 0 - 255
    Mono:
    Front Left: Playback 165 [65%] [-10.50dB]
    Front Right: Playback 165 [65%] [-10.50dB]

    Any idea how to change it back to cvolume, other mixers working well have, at least a cvolume value and other all name starting with a c.

    Any trick of your's appreciated, thanks!!

    Seb

     
  • Sebastien

    Sebastien - 2018-08-01

    Hi,

    Anybody have an idea or a suggestion ?

    Thanks !

    Seb

     
  • Sebastien

    Sebastien - 2018-08-01

    Hi,

    I've found the "same issue" in a report, the driver and teh card are the same as mine, only the linux flavor differ, mine is CentOS.

    http://www.alsa-project.org/db/?f=31f5faf68bc25689441d585204868cb57016df31

    Is there a known bug fort this card/driver combination, the results are that teh capture could not be toggle on (un mute), neither using alsamixer interface or amixer commands.

    Thanks

     
  • Sebastien

    Sebastien - 2018-08-01

    Hi,

    Finaly seems that all the channel are muted on, specially the cpature one :

    [root@localhost ~]# amixer -c 0 cset iface=MIXER,name='CAPTURE feedback Playback Volume' unmute
    numid=9,iface=MIXER,name='CAPTURE feedback Playback Volume'
    ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
    : values=0,0
    | dBscale-min=42949621.21dB,step=0.25dB,mute=1

    All the channel have the "mute=1" tag but I'm still unable to unmute all the channels as you can notice the command used.

    Anybody have an idea how to fix this?

    Thanks !

     

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