DPMS

Display Power Management Signaling

A VESA interface standard that defines four power management modes for monitors in idle state:

  1. on
  2. stand-by
  3. suspend
  4. off.

Using DPMS, the display controller (typically the video card or chip from which the monitor receives signals) sends a signal along two signal lines to the monitor, instructing it to enter into one of the four power management states. Those two lines are the horizontal sync (h-sync) and vertical sync (v-sync) lines.

Linux X11

As of Xorg 1.8 DPMS is auto detected and enabled if ACPI is also enabled at kernel runtime.

See Power Management Signaling

Last modified on 6 March 2014, at 12:07