There is a workaround on https://help.ubuntu.com/community/MacBook#head-
d374bb9e1b7183c133759a8c6877a34c50c4ba7d

The main idea is to use sofware volume control.

-- 
Muting Master channel doesn't mute sound
https://bugs.launchpad.net/bugs/93600
You received this bug notification because you are a member of Ubuntu
Bugs, which is the bug contact for Ubuntu.

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to