This problem was discussed here: https://bugzilla.kernel.org/show_bug.cgi?id=74841.
It also affects Ubuntu 16.04. ** Bug watch added: Linux Kernel Bug Tracker #74841 http://bugzilla.kernel.org/show_bug.cgi?id=74841 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1500605 Title: [20251, IDT 92HD95, Black Headphone Out, Front] Background noise or low volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1500605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
