Indeed. Master channel adjusts treble, while Front channel adjusts bass. BTW, when headphones are plugged in, Master has no effect, while Front simply adjusts the volume.
** Changed in: Ubuntu Status: Unconfirmed => Confirmed -- macbook volume control doesn't work https://bugs.launchpad.net/bugs/102818 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs