Sebastien, Follow your advice, I report an bug to bgo. Thanks!
https://bugzilla.gnome.org/show_bug.cgi?id=726686 ** Bug watch added: GNOME Bug Tracker #726686 https://bugzilla.gnome.org/show_bug.cgi?id=726686 -- 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
