I’m having a very strange visual issue in Kubuntu 20.10 on my Lenovo Yoga 13″. I get visual artifacts which take the form of white and black lines about 0.1″ long strewn across the screen. They tend to appear near spots with a lot of visual updates. The artifacts only show up in Plasma, not in a tty or Windows, so I know this is a software issue.
Reinstalling my video driver (
sudo apt purge xserver-xorg-video-intel && sudo apt install xserver-xorg-video-intel followed by a restart) solves the problem for about a week or two before the artifacts start again. Once they start, they become more prevalent over the course of a few hours until the computer is pretty much unusable.
I have no idea why this is happening, any advice is appreciated.