Quote from Aintnogeek

I think lot of users would like to turn libreelec in of state that only turns HDMI off but keep Libreelec running for samba and ssh.

If you only want to use samba/ssh why not just unplug the HDMI cable? Or add the vcgencmd command to autostart.sh. Are you even using Kodi at all?

You can probably map a script to a Kodi remote button if this is what you want - it's a little hard to understand from your post.

You can also use Asavah's pidisplaypower screensaver Kodi addon which will automatically turn off the HDMI after the configured idle period, and any button/input will turn the display back on: GitHub - asavah/script.pidisplaypower: Screensaver for Kodi running on raspberry pi that turns display power off by using vcgencmd display_power command.