Interesting problem, never heard of this type before. I suspect the hardware somehow isn't ready when Pulseaudio probes it. Could you do provide a PulseAudio log: http://wiki.ubuntu.com/PulseAudio/Log and plug it in while the log is running (and confirm the problem)? Thanks!
** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/841433 Title: Hotplug of USB 7.1 soundcard not detected properly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/841433/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs