A tool to control the display manager
dm-tool [OPTIONS]
COMMAND
[ARGS]
dm-tool is a tool to communicate with the LightDM display manager.
-h, --help
Show help options
--version
Show release version
--session-bus
Attempt to connect to the display manager using the session bus. This is useful if you are running a display manager in a test mode. If this option is not present dm-tool will connect using the system bus.
switch-to-greeterSwitch to the greeter suitable for logging into a new session.
Switch to a user session. If this user is already logged in then the display manager will switch to that session, otherwise a new session is started. If authentication is required a greeter will start to collect this. If the session option is provided then this session type will be used, otherwise the default for this user is used.
Switch to a guest session. If the guest session is already active the display manager will switch to that session, otherwise the guest session is started. If the session option is provided then this session type will be used, otherwise the default for the guest user is used.
lockLock the current seat. This will switch to a greeter with a hint that the screen is locked. You can return to this session by authenticating in the greeter.
list-seatsList the active seats and sessions that are running.
add-nested-seatStart an X server inside a session and connect it to a display manager.
Connect an existing X server to the display manager.
Add a dynamic seat.
XDG_SEAT_PATH
Used by dm-tool to determine in which display manager session it's running. When executing dm-tool outside of a display-manager use its list-seats command to show active sessions and set the session to connect to with: export XDG_SEAT_PATH=/org/freedesktop/DisplayManager/SeatX where SeatX is one of the listed sessions.
7 releases since Debian 8 (Jessie); the text changed 2 times.