That's a known issue and a design decision from upstream, see e.g https://unix.stackexchange.com/questions/242129/gnome-3-how-to-set- power-button-to-shutdown-instead-of-suspend
** Bug watch added: GNOME Bug Tracker #781108 https://bugzilla.gnome.org/show_bug.cgi?id=781108 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1707026 Title: powerswitch cannot be configured to shutdown Status in GNOME Settings Daemon: Unknown Status in gnome-settings-daemon package in Ubuntu: Triaged Bug description: Ubuntu 17.10 amd64 daily, encrypted home, German language In settings - power the powerswitch cannot be configured to shutdown the computer, there are only 2 options "nothing" and "hibernate" offered. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-settings-daemon/+bug/1707026/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
