What is your hardware setup running your Linux system.

[BBFG#]

Only interested in knowing from others that are currently running a Linux system successfully. If you're reading this just to post why no one should, please move on.
I've been running an older Ubuntu version on two different laptops in live session USB boots for awhile now. Decided to take the next step of installing the updated version to a dedicated SSD and dual booting on my desktop xeons and have tried Ubuntu Studio and Mint with no success. I currently believe there are some hardware conflicts causing kernel syncing panic. From what I read, the video card is most suspect. Don't want to upgrade that just for this though.
So I'm thinking of buying a dedicated system to run Linux only and since I generally build my own systems want to ask what's working best for you that have it running without issue.
Again, if you're just waiting to post about issues and why anyone using Linux is a fool, move on.
If you have ideas of things you would like to do to improve your hardware system more, please share.

Specs most interested in are models/brands of MB/CPU, Video card or if you're using a preconfigured laptop brand/model and its specs. And any b other considerations you've come across. And of course, what distro you're using with it.

And secondarily, your interface and input controller(s), etc.