Network dies after sleep

Might do just that. I've had this for about two months now... What are all the stuff I could backup besides /home?
I hope that the BIOS update didn't nuke nmve linux support since this is a laptop where you really can't change the drive...

I doubt something that negative would be tolerated in a bios update (especially as Lenovo is a big Linux supporter). I never paid too much attention to the posts relating to the nmve drives, but usually it could be fixed. I just saw those type of posts often enough to want to steer clear for the time being anyways.

Backing up all your configuration files in /etc might be useful, especially if you've done a lot of customization.