[ltp] Volume buttons turn microphone on

[Phil]

Found the answer. The Gnome System..Preferences..Sound control (which 
I've never noticed before) has a panel "Select the device and tracks to 
control with the keyboard". On my system it was set to 'Microphone'.  
Setting it to 'Master' cures the problem.
Still don't know what's getting invoked via acpi though :-(

Cheers all
Phil

Richard Neill wrote:
>
>
> Phil wrote:
>> Hi
>>
>> I'm running Ubuntu 7.04 on a T60 2007-63G. Everything seems to work 
>> well (although suspend to ram failed today for the first time :-( but 
>> I have a problem with the keyboard volume buttons. Instead of 
>> raising/lowering Master volume they raise/lower the Playback 
>> Microphone volume. Looking in /etc/acpi it seems that the button 
>> presses fire the vol[up|down]btn.sh scripts, which use acpi_fakekey 
>> to insert a KEY_VOLUMEUP/DOWN keypress, but I can't work out what 
>> happens next.
>>
>> Incidentally initiating a call on skype also frigs with the 
>> microphone recording settings - reducing the level so that the other 
>> party can't hear what I'm saying, but I can't anywhere to configure 
>> this.
>
> amixer  is probably what you want here - you can use it to fix the 
> mixer as you want it - just discard existing scripts.
>
> As for skype, I think skype uses the OSS sound system, not ALSA. THat 
> means that it uses a different interface, and probably requires 
> exclusive access to the sound card. How about a wrapper script: 
> skypewrapper.sh
>
>
> #!/bin/bash
> alsactl -f levels.tmp store  #save mixer levels
> skype &
> skype_pid=$!        #pid of skype
> sleep 1
> amixer sset [SOMETHING]  #fix the Mic levels.
> wait $skype_pid        #wait for skype to close
> alsactl -f levels.tmp store  #restore mixer levels
>
>
> Or, you could try ekiga instead.
>
> HTH,
>
> Richard