USB sound device not recognized

Posted by David E. Anderson on Ask Ubuntu See other posts from Ask Ubuntu or by David E. Anderson
Published on 2010-10-14T16:53:27Z Indexed on 2011/01/11 21:58 UTC
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10.10

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sound

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usb

I have a USB sound device that used to work back when I ran other versions of Ubuntu. Now I can only partially see the device. I have tried many things I saw in Google searches, but none solve my problem.

cat /proc/asound/cards sees the device as card 0

aplay -l shows C-Media USB Audio as card 0
alsamixer sees the device
asoundconf list does not show the device
sound preferences shows no hardware
asoundconf-gtk set the device to pulseaudio, but fails with python errors ending in ValueError: too many values to unpack in the function set_default_card. I think this is the cause of my problem.

The device is a Sony virtual phones wireless headphone amplifier.

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