This will allow a Raspberry pi to run software in Kiosk mode. This is most useful for software such as NoMachine.

• Create a new custom Xsession in /usr/share/xsessions. For example, the NoMachine conf.

[Desktop Entry]
Comment=Access NoMachine computers over the network
Path=/usr/NX/bin/
Exec=/usr/NX/bin/nxplayer
Icon=NoMachine-icon
StartupWMClass=nxplayer.bin
Type=Application

• Edit /etc/lightdm/lightdm.conf in the following places. This should be done in the [Seat:*] section.

#greeter-session=pi-greeter (ensure this is commented out)
autologin-user = pi
autologin-user-timeout=0
autologin-session=NoMachine

• Restart the machine and the application should run in kiosk mode