Public bug reported: These laptops all have the codec of alc285.
reproduced by: 1. Hookup a set of headphones that you can separately place in/on your ears. (ie. ear buds) 2. Put only the right headphone in/on your ear. 3. Go to the Gnome sound settings and bring up the "Test Speakers" function 4. Play the left speaker test You would expect to hear nothing in the right ear, but instead you hear a "pop" at the start of each word spoken. ("pop" Front "pop" left). You can repeat with the left headphone and see similar results. I even tried shifting the balance all the way to the left/right and get the same results. So one problem appears to be when the headphone jack is initially sent audio, it causes a "pop" in the headphone jack. ** Affects: linux (Ubuntu) Importance: Critical Assignee: Hui Wang (hui.wang) Status: New ** Changed in: linux (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1805079 Title: click/pop noise in the headphone on several lenovo laptops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805079/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs