I happily ran my Batch 4 DIY laptop with Debian from last fall to last Friday. When I attempted to restore from hibernation on Friday, I got the “Default Boot Device Missing or Boot Failed” error; I fixed by reinstalling GRUB from a liveusb.
Altogether the symptoms are very much like [Solved]"Default Boot Device Missing" after update to BIOS 3.07, but—and here’s the kicker—I’ve never updated the BIOS. dmidecode shows
Vendor: INSYDE Corp.
This is a little concerning. Anybody have any idea what happened? (Is there some way I could’ve unintentionally updated the BIOS, and dmidecode is giving me bad information? This doesn’t seem so likely…)