Display off on idle

Hi everyone,

I have my KODI – libreelec build (x86 intel) linux build going into the TV via a HDMI switcher. In kodi I noticed that the software can and does stop the signal after a set period of time of inactivity. I was wondering if it was possible to completely disable the HDMI ie depower the cable and then renable when required. This is required so that the switcher switches over – the lack of a HDMI signal does not be sufficient but the absence or presence of the power (from other devices) seems to be trigger.

I am a relatively inexperienced in linux so any help would be appreciated.

thanks

casper88