CPU at 100% but no process uses the CPU

[fsflover]

@vog

Upgrading Coreboot while having only Qubes OS installed on the system is notoriously difficult but I’m working on it.

See also: How to update coreboot offline.

@FranklyFlawless

Use a live USB with PureOS 10.3 installed for handling low-level tasks like these. Follow the instructions below to update Coreboot.

This is very insecure, compared to what Qubes OS offers: you directly connect your BIOS to the Internet, while on Qubes you never go online in the Admin VM and never even run there anything.