Hi!
I too have a DELL Inspiron 9400/E1705 with the STAC9200. I've solved this problem by making some changes in the file "/usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common". Try this:
Code:
sudo gedit /usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common
You will find those lines near the bottom of the file:
Code:
[Element PCM]
switch = mute
volume = merge
override-map.1 = all
override-map.2 = all-left,all-right
So, add theses lines BEFORE:
Code:
[Element Master]
switch = mute
volume = ignore
and these lines AFTER:
Code:
[Element LFE]
switch = mute
volume = ignore
You should finally have:
Code:
[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
Save and quit. Then restart (restarting Pulseaudio isn't enough).
Using Fn + PageUp / PageDown or the media buttons now only modifies the "PCM" channel (have a look on alsamixer).
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