Yeah, pretty much any modern X series Thinkpad runs any flavor of Ubuntu well in my experience. I run Ubuntu 14 LTS on a 6 year old X201. Goes like a champ. You

Yeah, pretty much any modern X series Thinkpad runs any flavor of Ubuntu well in my experience. I run Ubuntu 14 LTS on a 6 year old X201. Goes like a champ. You really can't go wrong with Thinkpads, unless you're concerned about that preinstalled malware thing on their newer machines, which... you probably should be.