How to disable the internal speaker in Lucid

Karl Larsen klarsen1 at
Tue Jun 1 20:23:00 UTC 2010

On 06/01/2010 02:03 AM, Amichai Rotman wrote:
> Hi,
> I recently installed Ubuntu Lucid after using Kubuntu Hardy LTS for a 
> long while (KDE 3.5.10).
> I am trying to disable sound output to my internal speaker.
> I have an HP DX2300 Mini Tower machine which has a full speaker on 
> board. There isn't a way to disable it in the BIOS without disabling 
> the entire on-board audio device, which I use.
> In Hardy I found a way to tick all output devices in Kmix and then 
> dable the internal speaker.
> I can't find the same in the Gnome Sound Preferences. When I turn off 
> the external speakers connected to the line out (green) plug of the 
> on-board card, the internal speaker continues to output sound, 
> actually it does all the time, but the external speakers mask it while 
> on....
> This is really annoying. I am no stranger to the CLI, but I am not 
> sure which .conf to change and where to look - I don't know PulseAudio 
> that well. I tried to use alsamixer under CLI, but when I turned off 
> all volume to PCM, the master volume was also affected....
> Help!
> Thanks!
> .:====================================================:.
> Amichai Rotman
> Registered Linux User#: 201192 []
> Registered Ubuntu User #12851 []
> ------------------------------------------------------------------------------------------------------------
> .:====================================================:.
         The best way to disable an internal speaker is to unplug it 
from where it plugs in. Just follow the two wires to where they plug in 
and unplug.

73 Karl


	Karl F. Larsen, AKA K5DI
	Linux User
         Key ID = 3951B48D

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