Fwd: Adjusting volume with GUI app for USB audio?
jester at panix.com
Wed Jan 11 06:57:38 PST 2006
(Forwarded from freebsd-multimedia, where no one replied. Is
that list meant only for hard-core development work, or am I
asking badly? I can provide any system details necessary.)
----- Forwarded message from Jesse Sheidlower <jester at panix.com> -----
After assorted work, I've gotten USB audio to work on my
computers (FreeBSD 6.0 and 5.4); I select the USB speakers
with "sysctl hw.snd.unit="1"" to get the pcm1 device.
I find that _some_ graphical volume-control utilities don't
work with the USB speakers. These include the GNOME
volume-control applet, the volume slider in xmms, and the
GNOME volume control application (not the applet). However,
some _do_ work, including the volume control in gmplayer and
the volume control in Rhythmbox. Furthermore, the commandline
mixer(8) works fine--with the speakers plugged in and
selected, "mixer" reports on bass, treble, and speaker volume,
and I can adjust the volume with "mixer speaker 60" or
However (again), adjusting the output source in those apps that
allow it has no effect--in the GNOME volume-control applet, for
example, I only have the device choice of "OSS Mixer", and
whether I select "Volume", "PCM", "Speaker", or anything else,
this just won't control the speaker volume.
Any suggestions? It's not the end of the world to use mixer(8)
but it's often inconvenient.
----- End forwarded message -----
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