I can’t find an active thinkpad centric community on here I am just going to post here. My Thinkpad T480s, 16 GB RAM, 238 GB SSD is randomly shutting off while at like 50%. When I try to open it back up it always is dead and I have to connect charger to boot it up again. Why is this happening? Is it battery issue? It complains about not being able to read temp2_input while shutting down and sometimes say PM usage count underflow. Not sure what that is supposed to mean.
I use Fedora on my T470 with no issues. It might just be Arch. Have you tried other distros? I wish there was a ThinkPad community here.
I also use Fedora on a 2008 Mac Pro with no issues. I’m really surprised how good it is because I’ve been using Linux since the 90s and never had it just run smoothly on my older hardware.
Fedora and arch should run the same kernel.