@pavi "Thinkpad" is too broad - there are many different hardware configurations. E.g. the X1 Carbon that I have uses the open Intel graphics drivers, but X1 Extreme requires the proprietary Nvidia drivers (afaik). Currently I'm having some audio issues and trying to figure out what's the problem, which I didn't have with a previous gen of X1 Carbon.
I've used many ThinkPad models with various Linux distros and most work out of the box. They are not perfect but a lot better than most brands.
@jameshjacksonjr @cybette My major issue is the iwl intel wireless, they are propreitary drivers. Yes they work without any hassle if you install them seperately if you are on a "free" software distro.