Installing on Ubuntu 22 and newer
Before installing the StaffCounter Agent on Ubuntu 22, you must switch the display server from Wayland to X11.
Wayland is enabled by default in Ubuntu 22.04 (Jammy Jellyfish), but it can be disabled.
Disabling Wayland
Edit the GDM3 configuration file:
sudo nano /etc/gdm3/custom.conf
Find the line:
#WaylandEnable=false
Uncomment it and set to:
WaylandEnable=false
Save the file and reboot your system for changes to take effect.