Taking back my comment #9 from above. It just takes longer for the problem to appear.
So it must be an additional problem somewhere besides the entry in USB- Audio.conf. Symptom: - plugin usb headset - headset gets listed in lsubs and aplay -l - after a while (seconds or minutes) left mouse button stops working - unplug usb headset - mouse button works again -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1002952 Title: [meta-bug] Invalid extra "Digital output S/PDIF" device for USB cards To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/1002952/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs