It is related to the Samsung screen. There‘s a kde bug since Plasma 6.2 where this is happening. Long story short: disable ddc (look up your plasma-powerdevil.service file (mine was in /usr/lib/systemd/user) and add Environment=“POWERDEVIL_NO_DDCUTIL=1” to it. Save, restart powerdevil (or reboot) and it shouldn‘t happen anymore.)
No idea if it will help you here, but everytime someone mentions to me they are having display output issues and they’re using Wayland and an Nvidia GPU, I recommend trying X to see if problem persists or not. If it doesn’t, I would suspect the GPU driver, but that is a VERY uninformed guess. Lol
It is related to the Samsung screen. There‘s a kde bug since Plasma 6.2 where this is happening. Long story short: disable ddc (look up your plasma-powerdevil.service file (mine was in /usr/lib/systemd/user) and add Environment=“POWERDEVIL_NO_DDCUTIL=1” to it. Save, restart powerdevil (or reboot) and it shouldn‘t happen anymore.)
See https://bugs.kde.org/show_bug.cgi?id=494522 for reference. Hope it works
No idea if it will help you here, but everytime someone mentions to me they are having display output issues and they’re using Wayland and an Nvidia GPU, I recommend trying X to see if problem persists or not. If it doesn’t, I would suspect the GPU driver, but that is a VERY uninformed guess. Lol