White Pixel (Snow) with "xset -display :0 dpms force on/off"

[Smolo]

Hello,

with a fresh standard installation of Magic Mirror, dpms off worked very well to turn the display on and off.

After setting up the individual modules and configuration I now have the problem that white pixels are distributed across the screen like in the wild snow.

It used to work on two different displays and both now have the same problem?

Does anyone have an idea where I should start to look with the xset settings I have already played a lot around unfortunately without success.

Thx