Plug In Phones, Speaker Does Not Mute.

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Hi all!

Using C6 on an Asus M5A99X EVO R2.0 motherboard with AMD six core FX6300. That board uses Realtek ALC892 audio chipset.

For the first time since I got that motherboard I tried plugging in headphones to the front panel speaker output. I was somewhat displeased to note that the speakers don’t mute when that happens.

I recall seeing info on that in Fedora, but not CentOS, and haven’t so far scared up how to troubleshoot it.

I can MANUALLY change the setting in sound preferences, which offers only two choices: “Analog Output” and “Analog Headphones”.

Suggestions will be welcomed!

Fred

2 thoughts on - Plug In Phones, Speaker Does Not Mute.

  • Fred Smith writes:

    Might have a look at amixer and see if you have an option you can alter similar to:

    Simple mixer control ‘Auto-Mute Mode’,0
    Capabilities: enum
    Items: ‘Disabled’ ‘Speaker Only’ ‘Line Out+Speaker’
    Item0: ‘Line Out+Speaker’

    And see if you can set it ala:

    /usr/bin/amixer -c0 set “Auto-Mute Mode” “Line Out+Speaker”

    -Matthew Gillespie

  • Matthew:

    thanks for the reply. so far, that isn’t working, and I’m still perusing the man page. here’s what I get:

    $ /usr/bin/amixer -c0 set “Auto-Mute Mode” “Line Out+Speaker”
    amixer: Unable to find simple control ‘Auto-Mute Mode’,0

    I also note that when I do amixer -c0 controls, the resulting list does NOT contain either “Auto-Mute Mode” or “Line Out+Speaker”
    as permissible controls:

    amixer -c0 controls numidB,iface