VESA Display Power Management Signaling
VESA Display Power Management Signaling (or DPMS) is a standard from the VESA consortium for managing the power supply of video monitors for computers through the graphics card e.g.; shut off the monitor after the computer has been unused for some time (idle), to save power.
DPMS 1.0 was issued by VESA in 1993, and was based on the United States Environmental Protection Agency's (EPA) earlier Energy Star power management specifications. Subsequent revisions were rolled into future VESA BIOS Extensions.
DPMS defines four modes; normal, standby, suspended and off. When in the "off" state some power may still be drawn in order to power indicator lights.
The standard is:
|Stand-by||Off||On||< 80%||~1 Sec.|
|Suspend||On||Off||< 30W||~5 Sec.|
|Off||Off||Off||< 8W||~20 Sec.|
See also 
- PC User Guide: Chapter 8
- On a Targa TM 3820 PNLD Monitor
- VESA Display Power Management Signaling (DPMS) Standard (requires purchase of the specification)
- VESA Standards Listing
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