Chapter 11. Changing system power settings

Procedure

1. Edit the /etc/systemd/logind.conf configuration file to set the HandlePowerKey variable.

2. To reboot the system when you press the power button, set the reboot value:

   HandlePowerKey=reboot

   Use one of the following options:

   • poweroff: Shut down the computer.
   • reboot: Reboot the system.
   • halt: Initiate a system halt.
   • kexec: Initiate a kexec reboot.
   • suspend: Suspend the system.
   • hibernate: Initiate system hibernation.
   • ignore: Do nothing.

3. Restart the systemd-logind service to apply the changes:

   # systemctl reload systemd-logind

Procedure

1. Create a local database for system-wide settings in the /etc/dconf/db/local.d/01-power file:

   [org/gnome/settings-daemon/plugins/power]
   power-button-action=<value>

   Replace <value> with one of the following power button actions:

   • nothing: Does nothing.
   • suspend: Suspends the system.
   • hibernate: Hibernates the system.

   • interactive: Shows a pop-up query asking the user what to do.

     In the interactive mode, when you press the power button, the system automatically powers off after 60 seconds. You can select a different behavior from the pop-up query.

2. Optional: To override existing settings and prevent other users from changing it, edit configuration in the /etc/dconf/db/local.d/locks/01-power file:

   /org/gnome/settings-daemon/plugins/power/power-button-action

3. Update the system databases:

   # dconf update

4. Log out and log in again for the system-wide settings to take effect.