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logan@toshiba:~$ uname -a
Linux toshiba 4.8.0-1-amd64 #1 SMP Debian 4.8.7-1 (2016-11-13) x86_64 GNU/Linux

logan@toshiba:~$ dpkg -l | grep -e lightdm -e upower -e sysv -e systemd -e xfce -e consolekit 
ii  consolekit                            0.4.6-5                              amd64        framework for defining and tracking users, sessions and seats
ii  dbus-user-session                     1.10.14-1                            all          simple interprocess messaging system (systemd --user integration)
ii  gtk2-engines-xfce                     3.2.0-2                              amd64        GTK+-2.0 theme engine for Xfce
ii  liblightdm-gobject-1-0                1.18.3-1                             amd64        simple display manager (gobject library)
ii  libpam-systemd:amd64                  232-8                                amd64        system and service manager - PAM module
ii  libsystemd0:amd64                     232-8                                amd64        systemd utility library
ii  libupower-glib3:amd64                 0.99.4-4                             amd64        abstraction for power management - shared library
ii  libxfce4panel-2.0-4                   4.12.1-2                             amd64        Xfce4 panel libraries (GTK3 variant)
ii  libxfce4ui-1-0                        4.12.1-2                             amd64        widget library for Xfce - Gtk+2 variant
ii  libxfce4ui-2-0                        4.12.1-2                             amd64        widget library for Xfce - Gtk+3 variant
ii  libxfce4ui-common                     4.12.1-2                             all          common files for libxfce4ui
ii  libxfce4util-common                   4.12.1-3                             all          common files for libxfce4util
ii  libxfce4util7:amd64                   4.12.1-3                             amd64        Utility functions library for Xfce4
ii  libxfcegui4-4                         4.10.0-3+b1                          amd64        Basic GUI C functions for Xfce4
ii  lightdm                               1.18.3-1                             amd64        simple display manager
ii  lightdm-gtk-greeter                   2.0.2-1                              amd64        simple display manager (GTK+ greeter)
ii  systemd                               232-8                                amd64        system and service manager
ii  systemd-shim                          10-2                                 amd64        shim for systemd
ii  systemd-ui                            3-4                                  amd64        graphical frontend for systemd
ii  sysv-rc                               2.88dsf-59.8                         all          System-V-like runlevel change mechanism
ii  sysvinit                              2.88dsf-59.7                         amd64        System-V-like init utilities - transitional package
ii  sysvinit-core                         2.88dsf-59.8                         amd64        System-V-like init utilities
ii  sysvinit-utils                        2.88dsf-59.8                         amd64        System-V-like utilities
ii  upower                                0.99.4-4                             amd64        abstraction for power management
ii  xfce4-appfinder                       4.12.0-2                             amd64        Application finder for the Xfce4 Desktop Environment
ii  xfce4-battery-plugin                  1.1.0-1                              amd64        battery monitor plugin for the Xfce4 panel
ii  xfce4-mount-plugin                    0.6.7-1+b1                           amd64        mount plugin for the Xfce4 panel
ii  xfce4-notifyd                         0.3.4-1                              amd64        simple, visually-appealing notification daemon for Xfce
ii  xfce4-panel                           4.12.1-2                             amd64        panel for Xfce4 desktop environment
ii  xfce4-power-manager                   1.4.4-4                              amd64        power manager for Xfce desktop
ii  xfce4-power-manager-data              1.4.4-4                              all          power manager for Xfce desktop, arch-indep files
ii  xfce4-power-manager-plugins           1.4.4-4                              amd64        power manager plugins for Xfce panel
ii  xfce4-quicklauncher-plugin            1.9.4-11+b1                          amd64        rapid launcher plugin for the Xfce4 panel
ii  xfce4-screenshooter                   1.8.2-2                              amd64        screenshots utility for Xfce
ii  xfce4-session                         4.12.1-5                             amd64        Xfce4 Session Manager
ii  xfce4-settings                        4.12.1-1                             amd64        graphical application for managing Xfce settings
ii  xfce4-terminal                        0.8.1-1                              amd64        Xfce terminal emulator
ii  xfdesktop4                            4.12.3-3                             amd64        xfce desktop background, icons and root menu manager
ii  xfdesktop4-data                       4.12.3-3                             all          xfce desktop background, icons and root menu (common files)