Appears to be a kernel problem. When I boot the new 15.10 system with the Vivid 3.19 kernel this bug doesn't exist.
** Also affects: linux-image-4.2.0-rc7 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1497675 Title: LightDM unity-greeter login sound has noisy distortion after 15.10 Wily upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-image-4.2.0-rc7/+bug/1497675/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs