+* pam_systemd: try to get old session id from cgroup, if audit sessionid cannot be determined
+
+* logind: auto-suspend, auto-shutdown:
+ IdleAction=(none|suspend|hibernate|poweroff)
+ IdleActionDelay=...
+ SessionIdleMode=(explicit|ignore|login)
+ ForceShutdown=(yes|no)
+
+* logind: use "sleep" as generic term for "suspend", "hibernate", ...
+