Screen locker

PhoshLockscreen
The lockscreen of Phosh is not a separate package but part of Phosh itself. It consists of three parts:
 * lockscreen-manager: The singleton that manages screen locking (source)
 * lockscreen: The main lock screen (source)
 * lockshield: Lock shield for non primary screens (source)

kscreenlocker
Plasma mobile comes with KDE screen locker. Package name is kscreenlocker.

xfce4-screensaver
Default implementation on Xfce4. It can be configured in the screensaver preferences (documentation page).

The virtual keyboard for the unlocking screen is configured in the preferences by command. This uses the "Phone" layout, it could be changed to another onboard layout. It could also be changed to another virtual keyboard, however, it needs to be one that offers embedded mode (windowed mode doesn't work in xfce4-screensaver). An alternative would be matchbox-keyboard with option for embedded mode:.

Changes on the locking state can be monitored via dbus by:  However, the unlock signal is issued after entering the password at the unlocking screen – it monitors the state of lock, not the state of the screen. The lock state can also be checked by.

An example draft script to use dbus-monitor to disable inputs and LEDs when locked can be found here: Screen_locker:Disable_inputs.

The command xflock4 is not a locker itself. It's a wrapper using either xfce4-screensaver, xscreensaver, gnome-screensaver, xlock or slock (source).

mate-screensaver
Similar to xfce4-screensaver. However, the settings doesn't offer virtual keyboard options. It can be done by gsettings, though.

For more options setting up the virtual keyboard, see MATE.

xscreensaver
XScreenSaver seems not be able to embed a virtual keyboard.

swaylock
Package description: Screen locker for Wayland.

i3lock
Locker of the i3wm user interface.

xautolock
Package description: An automatic X screen-locker/screen-saver.

slock
Package description: A simple screen locker for X.

boinc-screensaver
Package description: Open-source software for volunteer computing and grid computing. (screensaver)

gnome-screensaver
Not available at Alpine Linux or postmarketOS.

light-locker
Not available at Alpine Linux or postmarketOS.

Disable inputs
Some of the screen lockers don't disable inputs. Possible solutions can be colleted at: Screen_locker:Disable_inputs