Comment 3 for bug 1417784

It should also be noted that several other xserver-xorg-input packages are missing:
xserver-xorg-input-all-lts-utopic 1:7.7+7ubuntu2~trusty1
xserver-xorg-input-mouse-lts-utopic 1:1.9.0-1build2~trusty1
xserver-xorg-input-synaptics-lts-utopic 1.8.1-1ubuntu1~trusty1
xserver-xorg-input-vmmouse-lts-utopic 1:13.0.0-1build2~trusty1
xserver-xorg-input-wacom-lts-utopic 1:0.25.0-0ubuntu1~trusty1

All of the above are present in Lubuntu 14.04.1:
http://cdimage.ubuntu.com/lubuntu/releases/14.04.1/release/lubuntu-14.04.1-desktop-i386.manifest