I'm having the same problem however increasing the 'front' volume
doesn't fix it entirely.

THe behaviour is the following:
- The default volume of the front channel is not the maximum. I'd say it was 
around 75%.
- With those settings, the 'master' volume controls the volume but the highest 
volume will be that set in the 'front' channel.
- If I set the front volume to the max while listening to something, and have 
the 'master' volume set to the max too, it will sound as loud as it should.
- If I now lower the 'master' volume, the volume drops a LOT, then when I set 
it back to the max it won't sound as loud as it used to, it will sound as loud 
as it sounded when 'front' was set to 75%. But now FRONT is set to the MAX. The 
only way to get the max volume now will be to manually set the 'front' volume 
to the max again.


So there is still a bug. If you people are fixing it by upping the 'front' 
volume, it either doesn't work for me or you just simply stay with both max and 
front set to the maximum without ever lowering the volume through ubuntu 
(perhaps you have an external volume control in your speakers?).

The only way I could fix this was to set the "headphone" to the maximum
too. I just discovered that the bug works both ways, the behavior I just
described works with the 'headphone' channel too.  So to sum up:

- Given a volume level of 'master', if either 'front' or 'headphone' are
changed using the alsa mixer, the maximum volume will change to that of
the channel we have just changed. If after that, we change the volume
level of 'master', the maximum volume will change again, to that of the
lowest value (meaning that if we set the front volume to the max to get
higher volume, but headphone was at a lower value, then when we modify
the 'master' volume, it will lower its maximum value to what is set in
the 'headphone' channel, and viceversa).

I hope that makes sense

-- 
[hardy] low sound volume for some applications 
https://bugs.launchpad.net/bugs/192040
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