--- - name: Check if lightdm is installed shell: dpkg-query -W -f='${Status}' lightdm | grep 'install ok installed' register: lightdm_installed failed_when: no changed_when: no - name: Adjusting lightdm settings template: src: 'lightdm.conf' dest: '/usr/share/lightdm/lightdm.conf.d/50-libreschool.conf' owner: 'root' group: 'root' mode: 0644 when: lightdm_installed.rc == 0 notify: restart lightdm