Re: What To Do When Mint Crashes / Hangs / Freezes? The first thing you should try is ctrl-alt-esc. This will restart Cinnamon and Nemo without affecting the user session and you can continue to work after that. This will quit your user session.
How do I fix a frozen Linux Mint?
Holding down Alt & SysRq (which is the Print Screen key) while slowly typing REISUB will get you safely restarted.
How do you unfreeze a Linux computer?
Ctrl + Alt + PrtSc (SysRq) + reisub
This will restart your Linux safely. It’s possible that you’ll have problem to reach all the buttons you need to press. I’ve seen people type reisub with their nose So, here’s my suggestion: With your smallest finger on the left hand, press Ctrl.