Sound too loud on a Dell Inspiron 9400

On a Dell Inspiron 9400/E1705, the sound is too loud and can not be managed using the Sound Manager with Ubuntu 10.X.

To solve the issue, follow the geopteryx's tips : edit the pulseaudio config file with

sudo gedit /usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common and change

[Element PCM]
switch = mute
volume = merge
override-map.1 = all
override-map.2 = all-left,all-right

into:

[Element Master]
switch = mute
volume = ignore

[Element PCM]
switch = mute
volume = merge
override-map.1 = all
override-map.2 = all-left,all-right

[Element LFE]
switch = mute
volume = ignore