This issue fixed by the commit below. Please help to backport the patch to xenial.
commit 3574f9876634c290944441655733a8f07ab5c242 Author: Tomas Smetana <tsmet...@redhat.com> Date: Wed Oct 12 09:47:03 2016 +0200 Don't add new drive object on "change" uevent -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824073 Title: USB stick isn't mounted automatically To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1824073/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs