Fix no sound / turn off auto mute in Ubuntu 12.10


If your new installation of Ubuntu 12.10 is has no sound or seems to be permanently muted the following may help.

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  1. Open Alsamixer by running this command in the terminal(Ctrl+Alt+t):


    Check to see if 'Auto-Mute Mode' is set to 'Enabled' as in the image below, if it is move on the next step to disable it.

  2. Navigate to 'Auto-Mute Mode' with the right arrow key.

    Set 'Auto-Mute Mode' to 'Disabled' with the down arrow key.

    Hopefully you will now have your sound working correctly.

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