Display Power Management Signaling — ArchWiki

Display Power Management Signaling — ArchWiki.

$ xset -dpms Energy Star features off
$ xset +dpms Energy Star features on
$ xset dpms [standby [suspend [off]]]     
$ xset dpms force standby 
$ xset dpms force suspend 
$ xset dpms force off 
$ xset dpms force on  (also implicitly enables DPMS features)