Not sure which package needs updating, or if this is an interaction between packages. I'll leave that judgment to the experts. Maybe some additional debugging is needed (special kernel) to log the functionality and package interactions and help narrow down the problem? This problem has been around at least since Ubuntu 14 LTS and previous model Samsung Chromebooks, according to my web research.
** Package changed: pulseaudio (Ubuntu) => kernel-package (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1648644 Title: XE500C13-K02US Samsung Chromebook 3 Ubuntu 16.04.1 touchpad and keyboard not responsive, also no audio To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kernel-package/+bug/1648644/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs