My main laptop is a 2011 X220i, which has been upgraded to 8GB RAM, SSD, 5GHz wifi, USB 3.0 (ExpressCard) and a new 9-cell battery. I'm running KDE Neon on it

My main laptop is a 2011 X220i, which has been upgraded to 8GB RAM, SSD, 5GHz wifi, USB 3.0 (ExpressCard) and a new 9-cell battery. I'm running KDE Neon on it right now, and everything worked perfectly from a default install. Before that I was using Linux Mint, and that also worked fine. Sleep+wake and just work, and the sound switches correctly if I plug in a displayport cable or a stereo jack. I get 6-7 hours of battery life, which is expected with an i3 that needs to work a little harder these days. Both Neon and Mind are based on Ubuntu LTS. I had a newer T440 briefly, and that had no issues either.