Rock 2A - Turn off Display

Hi,
how can i turn off display until next reboot under linux ?

Every command below working as should,
but after a few minutes monitor (HDMI) is automatically turn on again.
In usb is nothing and after command no interaction.

I try:
Under CLI:

setterm --blank 1 --powerdown 2

Under X11:

xset dpms force off

or

xrandr --output HDMI-1 --off

P.S.:
Prefer solution for cli, because I using directly /dev/fb0,
but if exists any option under X11, which can by run by command, no problem .

THANX.