Since filing this bug I have determined that it is invalid. Here is what happens.
I install ubuntu-studio and it installs by default the rt kernel. Then the automatic updates install the generic kernel. Sound only works with the rt kernel. I don't know why. -- purging pulseaudio results in no sound at all https://bugs.launchpad.net/bugs/350411 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs