the "USB Device 0x46d:0x821" device is probably a webcam or similar device, from which you cannot play back.
As for the USB speakers - I don't know what's causing it, but there was some refactoring in the 3.5 kernel of the usb-audio driver. It might be worth to try a later kernel, and if that does not help, reporting the issue upstream at the alsa-devel mailinglist. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1074783 Title: ArtDio NB-005B USB Speakers Stopped Working in Ubuntu 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1074783/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
