To activate the keyboard in RebornOS with the Cinnamon desktop and lightDM:
First, install the following:
sudo pacman -S onboard mousetweaks
Then from the terminal, execute the following (copy and paste one line at a time):
sudo echo "indicators=~a11y;~session;~power" >> /etc/lightdm/lightdm-gtk-greeter.conf
sudo echo "keyboard=onboard" >> /etc/lightdm/lightdm-gtk-greeter.conf
Restart the computer. When access the lightDM home screen, press F3 to access the on-screen keyboard.
The RebornOS Team