I recently installed KDE Manjaro on my old system and it used to work like a breeze, until today. I started my laptop only to see a very scaled up version of it. Immediately I thought of resolution but it wasn't changed a bit. Neither was the scale. Both were at their original. I tried a lot of other things like rebooting, reinstalling the gpu drivers, (I use AMD, not NVidia), and a whole lot of other things. None of them worked unfortunately.

Finally I decided to just clean install the whole thing again. And now it has happened again. I'll attach a couple of images to show how it looks like.

https://imgur.com/a/aUftpJe

I have no idea what to do anymore. The only thing I can try is Kubuntu.

What did you change before this happened? Did you modify something in the DPI settings, or anything new in the display settings, like Global Scale modification?