Brian, Sorry for late, I've updated the package to gnome-control-center 1:3.4.2-0ubuntu0.13.2, and it works fine. Thanks!
** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1291862 Title: [soundnua]mic volume adjust bar is gray if you open sound-nua input tab earlier than plugging micphone To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1291862/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs