So if you haven’t used your Ubuntu/Pop!_OS machine (Dell XPS? others?) for a while and it gives you an error on launch that it cannot find your encrypted disk (cryptsetup: Waiting for encrypted source device… etc.) see this:

https://askubuntu.com/questions/1367468/cryptsetup-waiting-for-encrypted-source-device-after-the-motherboard-has-been-r

(In my case, I hadn’t changed the motherboard or anything but I guess the BIOS reverts back to Raid when it runs out of juice or something… it had lost the date setting too.)

#fun