Binary package “libpam-systemd” in ubuntu-rtm 14.09
system and service manager - PAM module
systemd is a replacement for sysvinit. It is dependency-based and
able to read the LSB init script headers in addition to parsing rcN.d
links as hints.
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It also provides process supervision using cgroups and the ability to
not only depend on other init script being started, but also
availability of a given mount point or dbus service.
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This package contains the PAM module which registers user sessions in
the systemd control group hierarchy.
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If in doubt, do install this package.
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Packages that depend on logind functionality need to depend on libpam-systemd.