I was able to reproduce this on a newly installed Maverick AMD64 system
with a "Logitech Premium Stereo USB Headset 350". I plugged in the
headset after booting the system, and it showed up in the hardware tab
of gnome-volume-control, but not on the input or output tabs.
If I tried to use the test button on the hardware tab, gnome-volume-
control would crash with the following printed to stderr:
**
ERROR:gvc-speaker-test.c:390:get_channel_map_for_card: assertion failed:
(stream)
Aborted
I was able to play audio to the headset with aplay by sending it
directly to the appropriate plughw device instead of to pulse.
After restarting pulseaudio, the headset worked as expected.
--
Logitech USB headsets work as output devices only after once restarting
pulseaudio
https://bugs.launchpad.net/bugs/546948
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