The weirdest thing. I lock KDE (no SDDM or anything, just using kscreenlocker). Screen turns off. Some time later, I wake up the screen with mouse/keyboard input, and it just starts blinking. I tried so many things to fix this. It seems to only happen when I lock the screen, and the screen is set to turn off on lock, and let it idle for some time (30 mins or so).
The only thing that helps fix this is if I switch to another VT and back to KDE, sometimes it only works if I also log in on the other VT.
I’m on Wayland, FreeBSD 14.4, KDE 6.6.6.