It already does this. Please provide more information on when this doesn't work for you. Is the "Mute" menu item in the sound menu checked when sound is on mute, but the icon in the panel shows that volume is above 0? How about the "Mute" checkbox in System Settings > Sound?
** Changed in: indicator-sound (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1332858 Title: Speaker icon should change to indicate that sound is muted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-sound/+bug/1332858/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs