I've had linux on every laptop I've owned for years, and I haven't really had a problem with any of them running linux, except for display port support on a dell xps.

Aside from that one dell laptop, though, I generally avoid HP and dell entirely, so perhaps that's why.

In 2013 I bought a laptop that I kept five years that had an Nvidia Optimus.

I never really figured out how to get the discrete card working consistently, and since then I haven't bought a laptop with an Nvidia card.

I've had issues with wifi cards and sound drivers and the like as well, though it's going a lot better now than it was a decade ago.