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Thread: Headphones won't mute laptop speakers - 12.04

  1. #1
    Join Date
    Mar 2011
    Location
    Herts, UK
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    14
    Distro
    Ubuntu 11.04 Natty Narwhal

    Headphones won't mute laptop speakers - 12.04

    Hi all,

    Running 12.04 and loving it. Only issue to date is that since this install my laptop speakers will not mute when I plug in a headphone jack.

    Laptop is Acer Aspire 5920. Sound is identified as Realtek ALC1200.

    I tried ALSA Mixer, but that can't get the phones working without the speakers either.

    I'd be grateful for assistance - the simpler the better, as I'm pretty simple...

    Thanks.

  2. #2
    Join Date
    Mar 2011
    Location
    Herts, UK
    Beans
    14
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Headphones won't mute laptop speakers - 12.04

    No ideas?

  3. #3
    Join Date
    Mar 2010
    Location
    Greece
    Beans
    60
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Headphones won't mute laptop speakers - 12.04

    i have the exact same problem!

    There are some solutions suggested here:

    http://askubuntu.com/questions/12809...n-ubuntu-12-04

    I have not tried them all, only the first one but it did not work.

    Edit: just found this: it is a bug.
    https://bugs.launchpad.net/ubuntu/+s...er/+bug/994953

  4. #4
    Join Date
    Oct 2010
    Location
    Finland
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    252
    Distro
    Ubuntu

    Re: Headphones won't mute laptop speakers - 12.04

    Alsamixer didn't work? What exactly did you do with alsamixer? Did you try to simply decrease the volume of the "speaker" channel using the arrow keys (in alsamixer)?

  5. #5
    Join Date
    Mar 2011
    Location
    Herts, UK
    Beans
    14
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Headphones won't mute laptop speakers - 12.04

    Quote Originally Posted by forestG View Post
    [...]

    just found this: it is a bug.
    https://bugs.launchpad.net/ubuntu/+s...er/+bug/994953
    Ah yeah, that's the one. Thanks, forestG.

    Guess I have to wait for a fix.

  6. #6
    Join Date
    Mar 2010
    Location
    Greece
    Beans
    60
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Headphones won't mute laptop speakers - 12.04

    Quote Originally Posted by na5h View Post
    Alsamixer didn't work? What exactly did you do with alsamixer? Did you try to simply decrease the volume of the "speaker" channel using the arrow keys (in alsamixer)?
    In my case the problem is that alsamixer does not recognize the existence of the headphones. It considers the two outputs to be one. So headphones appear to be non-existent (volume to 0 without being able to change it) and the speakers control controls both speakers and headphones

  7. #7
    Join Date
    Jan 2011
    Location
    Sweden
    Beans
    3
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: Headphones won't mute laptop speakers - 12.04

    Quote Originally Posted by forestG View Post
    In my case the problem is that alsamixer does not recognize the existence of the headphones. It considers the two outputs to be one. So headphones appear to be non-existent (volume to 0 without being able to change it) and the speakers control controls both speakers and headphones
    I'm having the same problem, so I guess I'm waiting for a fix too

  8. #8

    Re: Headphones won't mute laptop speakers - 12.04

    Hi. I had the same problem with ubuntu 11.10 on a friend's laptop. Unfortunately I don't remember how we fixed it ...

    We can start viewing the output of this:

    Code:
    aplay -l
    and this:

    Code:
    cat /proc/asound/modules
    Last edited by CrocoDuck; June 2nd, 2012 at 12:17 PM.

  9. #9
    Join Date
    Jun 2012
    Beans
    1

    Re: Headphones won't mute laptop speakers - 12.04

    ho risolto il problema così:

    Code:
    $ sudo gedit /etc/modprobe.d/alsa-base.conf
    e aggiungere la seguente opzione

    Code:
    options snd-hda-intel model=auto
    ciao

  10. #10
    Join Date
    Jan 2012
    Beans
    8

    Re: Headphones won't mute laptop speakers - 12.04

    Hi, I had the same problem after upgrading to 12.04.
    In my case I solved installing the Realtek codecs from this site:

    http://www.realtek.com.tw/downloads/...&GetDown=false

    as suggested in this website (in Italian, with instructions):

    http://www.supernerd.it/2012/05/29/u...chede-realtek/

    Hope this helps

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