Wife got a "new" (refurbished) laptop. Thinkpad x280. CMOS battery seems to be dead, and that seems to be creating tons of weird effects. Replacement battery ordered.
@jbqueru where did she get it off of? I had an issue with my original laptop, got one off of Amazon and it was glitchy!! Now I got a new one and it works perfect.

@cybersecdancer We got it locally in Greece from an online shop called reuse-it. They confirmed over the phone that the variant they have has a 1080p screen, my wife doesn't want any less than that.

https://www.reuse-it.gr/shop/product/1-l-20kes4bt0z-a-i5-8350u-8gb-d4-2400-10p-256-m-2-12-integrated-laptop-lenovo-thinkpad-x280-g-b-grade-a-i5-8350u-8gb-win10-pro-256gb-12-3476

(The SSD and main battery are easily replaced, and we've already verified that all the hardware seems to work out of the box with Linux).

Laptop Lenovo Thinkpad X280 G-B Grade A i5-8350U 8Gb Win10 Pro 256Gb 12"

Xermes P. C.