Overview

sessiond is a daemon for systemd-based Linux systems that interfaces with systemd-logind to provide session management features to X11 window managers.

Its primary responsibility is to monitor keyboard and mouse activity to determine when a session has become idle, and to then act accordingly.

It also provides a DBus service with interfaces to backlights and audio sinks.

• automatic screen locking on session idle and before sleeping
• automatic backlight dimming on session idle
• automatic muting of audio while session is locked
• systemd targets activated by systemd-logind’s lock, unlock, sleep, and shutdown signals
• hooks triggered by inactivity or signals
• a DBus service
  • backlight interaction
  • audio sink interaction
• (optional) management of DPMS settings