I eventually got them working, partly by reinstalling the kernel source,
partly by POWERING DOWN and restarting, rather than just restarting,
partly by reading this:
http://ubuntuforums.org/showthread.php?t=205449&highlight=2+sound+card+ubuntu+problem
The fact it did not work right from the start
After upgrading my kernel source and powering off and on my machine the
situation has improved. I can now see the speakers on the dropdown menu
in the Audio config window. But still no sound.
There are many other people with the same issue:
https://answers.launchpad.net/ubuntu/+question/5455
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** Changed in: alsa-lib (Ubuntu)
Sourcepackagename: None => alsa-lib
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USB speakers not detected (Feisty 64 Bit)
https://bugs.launchpad.net/bugs/127040
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Public bug reported:
I'm running Feisty 7.0.4 (64Bit) on AMD64. I have a set of Logitech v20
USB speakers that work fine with the 32Bit version, but are not picked
up by aplay or asoundconf on 64Bit. Everything I have read tells me they
should work plug-and-play style. If I boot with the x86 dist
