Firstly, thank you for this fantastic creation. I am definitely a rookie in the linux space, but after trying 4 different distros and learning a little along the way, I've managed to get an almost fully working solution using an old x64 Celeron PC and a 14"touch screen using Debian 13 KDE Plasma (installed from minimum via CLI).

The last issue I have to solve is utilising MQTT to turn off the display. All other MQTT sensors and switches are working - in fact, this was also working on another distro (Lubuntu), but I had far more problems on that occasion.

The issue in my very unexperienced view might be caused by me using Wayland this time around, rather than X11. I've checked and there is no DPMS extension, which seems to support this. I think you've referenced a few times that Wayland is the better solution - but as it stands, does this mean that HDMI monitors will not be able to be power cycled? That would be a deal breaker unfortunately for me, and I'd assume a lot of PC users.

If there's a way around this I'd love to know. Thanks.