I purchased a Dell laptop with Ubuntu pre-installed on it. It's been a painful experience. The hardware is what I wanted, but Ubuntu is a constant problem. There are constant errors popping up alerts about various issues. Fully utilizing my keyboard is an issue (super key is not usable at the moment). But the biggest issue currently is not being able to use an external monitor with it because of DPI issues. The resolution of my laptop is 4k, but the monitors I want to attach don't have the same high DPI. This means the resolution gets all wanky bewteen the two, making it problematic to use.

I remember setting up a 3-head system back in the day custom coding my own XFree86 Config file by hand. That was about 15 years ago. Frankly, it doesn't feel like things have improved much. And I have less desire to hand code things that, frankly, should be sorted out by now for a desktop OS.