UPDATE: Perhaps an unhelpful 'solution'. I have found that after shutting down and rebooting with the device plugged in that I can successfully switch the output in the Sound Settings. The device works properly now.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990776 Title: USB audio device (Audioengine AW1) detected but when selected does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/990776/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
