DPMSEnable - enables DPMS on the specified display

display
              Specifies the connection to the X server

       The DPMSEnable function enables Display Power Management Signaling (DPMS) on the specified display.  When
       DPMS  is  enabled, DPMS will use the currently saved timeout values. It will trigger the appropriate DPMS
       power level based on the timeout values. Refer to DPMSSetTimeouts.  All physical screens are affected  by
       DPMSEnable at the same time.

       If  DPMSEnable  is  invoked  on  a display which has DPMS already enabled, or on a display which does not
       support DPMS, no change is made and no error is returned.

       DPMSEnable - enables DPMS on the specified display

       TRUE           The DPMSEnable function always returns TRUE.

DPMSCapable(3), DPMSDisable(3), DPMSGetTimeouts(3), DPMSSetTimeouts(3)

X Version 11                                      libXext 1.3.4                                    DPMSEnable(3)

cc [ flag ... ] file ... -lXext [ library ... ]
       #include <X11/extensions/dpms.h>

       StatusDPMSEnable ( Display *display );