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I could try and guess the package name but it would only be a guess.
This behavior occurs in gnome when adjusting the sound volume for the
USB audio controller. The window title is "Volume Control: Logitech
Speaker (Alsa Mixer)". Help --> About says, "Volume Control 2.22.0 a
Gnome/Gstreamer-based volume control application (c) 2003-2004 Ronald
Bultje." The reason I'm reporting this as a bug is there are several
posts in the support forums with other having the same problem but no
solutions.
Basically, after I installed the Logitech USB speakers, I went to System
--> Preferences --> Sound and selected "USB Audio" for my audio output.
Sound does go through the speakers however the volume control on the
task bar has no effect on the audio. Nor does pushing the volume
control buttons on the laptop. The volume applet volume indicator bar
does move up and down but no volume changes are made. To adjust the
volume I have to use the PCM volume control in the package described
above. When trying to adjust the volume in this way the right channel
slider seems to work fine but the left channel slider is very erratic
and extremely difficult to get to the position desired. In addition,
most of the time the link button at the bottom will not work to link the
channels together. It will work intermittently but more often than not
it simply won't link the sliders.
Using Ubuntu 8.04
Hardware is a Dell Inspiron 1420 laptop
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: Fix Released
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PCM playback volume sliders extremely erratic
https://bugs.edge.launchpad.net/bugs/323732
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