I recently built my Framework 13 AMD DIY edition, and everything was working fine until I shut it down for the first time. When I tried to turn it back on via the power button, nothing happened. I though maybe the keyboard wasn’t plugged in so I took it off and unplugged it. As soon as I disconnected and reconnected the keyboard, it booted and there were red flashing lights in the inside. I read that that means “both sides blinking red indicates that the mainboard is powered while the Input Cover is removed.” (Blinking red LED on side? - #6 by Nixingit). Sleeping and restarting works fine, I have no idea what’s going on.
I’m running Ubuntu 22.04 and I haven’t updated my bios from when I got it, but I don’t think that’s the issue.