Systemd seems hard to be purged cleanly. I followed this guide <http://without-systemd.org/wiki/index.php/How_to_remove_systemd_from_a_Debian_jessie/sid_installation> step by step, but finally I can't start X. I see the following error in my Xorg.0.log.
- - (EE) systemd-logind: failed to get session: The name org.freedesktop.login1 was not provided by any .service files -- 王晓林
