--- - name: Check if gdm3 is installed shell: dpkg-query -W -f='${Status}' gdm3 | grep 'install ok installed' register: gdm3_installed failed_when: no changed_when: no - name: Adjust gdm3 settings ini_file: path: /etc/gdm3/greeter.dconf-defaults section: org/gnome/login-screen option: disable-user-list value: "true" no_extra_spaces: yes when: gdm3_installed.rc == 0 notify: restart gdm3