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Frequently Asked Questions

Why doesn't my monitor turn off automatically?

Display Power Management Signaling (DPMS) has been disabled by another application. This can be confirmed and resolved using the xset command. To check if DPMS is disabled, run the below command.

$ xset -q
DPMS (Energy Star):
  Standby: 1200    Suspend: 0    Off: 3600
  DPMS is Disabled

If DPMS is disabled, it can be turned back on with xset +dpms

$ xset +dpms
$ xset -q
DPMS (Energy Star):
  Standby: 1200    Suspend: 0    Off: 3600
  DPMS is Enabled
  Monitor is On

Why doesn't my screensaver activate automatically?

Possibility A

The screensaver daemon is not currently running. You can check this by looking at the running processes, or just run xfce4-screensaver to start it up.

Possibility B

Another application has disabled the X11 screensaver. This can be determined by running xdg-screensaver status.

$ xdg-screensaver status
disabled

If this command outputs “disabled”, try running the following commands to enable the screensaver.

$ xset s blank # Sets the X11 screensaver mode to "blank"
$ xset s 300   # Sets the X11 screensaver timeout to 5 minutes
$ xdg-screensaver status
enabled