I run Mint (now 19.3) on a T420 Thinkpad, and suspend/Resume has always just worked as expected. I don't recall having to jump through hoops when I originally

I run Mint (now 19.3) on a T420 Thinkpad, and suspend/Resume has always just worked as expected. I don't recall having to jump through hoops when I originally setup the machine about 3 years ago.