Have a laptop running RHEL 8.4 without the gui. I would like to power off the display.
I use to run
vbetool dpms off on ubuntu but that doesn't work,
user@server# ls /sys/class/drm card0 card0-DP-1 card0-HDMI-A-1 card0-LVDS-1 card0-VGA-1 renderD128 version
[Update] I'm not using Wayland or X11, session type is shown as tty.
user@server$ loginctl show-session "$XDG_SESSION_ID" -p Type Type=tty
[Update] These commands complete successfully but have no affect
user@server$ setterm --blank force user@server$ setterm --powerdown 1