This was due to a change to use upstream udev rules in 1:0.25.0-0ubuntu1, first in 14.10 and then part of lts-utopic stack on 14.04.2.
This was due to a change to use upstream udev rules in 1:0.25.0-0ubuntu1, first in 14.10 and then part of lts-utopic stack on 14.04.2.