==What's DPMS==
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.

==Turn off DPMS and Disable auto blank==
Use the commands below:
xset -dpms
xset s off