According to my research, "systemd doesn't work with 14.04".
However, on all my Ubuntu 14.04 "Trusty" machines, systemd is running:
jay@host:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
So if it doesn't work with Trusty, why on earth is systemd installed and running?
jay@host:~$ dpkg -l | grep systemd
ii libpam-systemd:amd64 204-5ubuntu20.11 amd64 system and service manager - PAM module
ii libsystemd-daemon0:amd64 204-5ubuntu20.11 amd64 systemd utility library
ii libsystemd-login0:amd64 204-5ubuntu20.11 amd64 systemd login utility library
ii systemd-services 204-5ubuntu20.11 amd64 systemd runtime services
ii systemd-shim 6-2bzr1 amd64 shim for systemd
.
jay@host:~$ ps -ef | grep systemd
root 408 1 0 Jun17 ? 00:00:00 /lib/systemd/systemd-udevd --daemon
root 808 1 0 Jun17 ? 00:00:00 /lib/systemd/systemd-logind
jay 13544 13242 0 12:07 pts/2 00:00:00 grep --color=auto systemd