You can also set the values via the command line, if you are having trouble with xfce4-settings-editor:
$ xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/dpms-enabled -s true $ xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/lock-screen-suspend-hibernate -s true $ xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/logind-handle-lid-switch -s false
You can also set the values via the command line, if you are having trouble with xfce4-settings- editor:
$ xfconf-query -c xfce4-power-manager -p /xfce4- power-manager/ dpms-enabled -s true power-manager/ lock-screen- suspend- hibernate -s true power-manager/ logind- handle- lid-switch -s false
$ xfconf-query -c xfce4-power-manager -p /xfce4-
$ xfconf-query -c xfce4-power-manager -p /xfce4-