This is a collection of systemd service files and programs which enable a user to automatically let systemd lock its X session when it goes to sleep.
To use it one just has to activate two simple systemd services.
-
The system service which is activated by the sleep target and sends a lock message to all active sessions.
systemctl enable screenlock.service -
The user service waiting for the lock message and actually locking the screen.
systemctl --user enable lock-forward@slimlock.serviceTherefore it is necessary that your systemd user session knowns the XDG_SESSION_ID and the DISPLAY environment variables.
Alternatively, one could also simply start the lock-forward tool directly when the user logs in.
lock-forward slimlock
Some screen locker are not able to properly determine that the screen is already locked. Hence, if you already locked your screen manually and later put your computer to sleep, it will be locked twice. To prevent such an annoyance, it is also possible to use the lock-forward program to manually lock the screen. By using the following command, lock-forward will properly lock your screen if it is not yet locked, as well as make sure that it is not locked later when the computer goes to sleep.
lock-now