On X200 with Libreboot 20220710 running Debian Bullseye I loose the battery icon (cannot see charge status), cannot adjust screen brightness with Fn keys, power management does not work and the system hangs on reboot or shutdown with ACPI error message AE_NOT_FOUND. Everything works well downgrading back to 20160907.
can you test this on latest coreboot?
i want to see if upstream has this bug or just us
I would like to help but I don't have any experience with coreboot and I don't know how to compile it for Thinkpad X200.
I will gladly follow instructions though.