According to comment #3, 3.19 cannot reproduce this bug, because Hui already upstreamed the fix in bug 1329580. Hui, can you see if the fix can be backported?
** Changed in: linux (Ubuntu) Assignee: (unassigned) => Hui Wang (hui.wang) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1410309 Title: [HP EliteBook 725 G2 Notebook PC] mute LED does not work. it always keeps the same color (white). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1410309/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs