On a fresh install of ubuntu 12.04 my Bose USB weren't working at all.
I read through a large number of posts here and elsewehre on Bose or USB speakers. I tried many things (modifying a number of different files, etc.).
This worked... sort of: USB Audio on 0 volume on startup
The AlsaMixer works after I turn up the volume, but the sound crackles a lot. Also, having to use a term mixer to change sound isn't ideal.
Any other ideas?