Running new hardware is always fun. The problems are endless. The solutions not so much.
So I've got a brand new ThinkPad X13 AMD. It features an AMD Ryzen 5 PRO 4650U, 16GB of RAM and a 256GB NVME SSD. The internal type identifier is 20UF. It runs the latest firmware as of today with version 1.09.
So far I found two problems with it:
The system silently fails to boot a signed shim and grub from an USB thumb drive. I used on of the Debian Cloud images, which should properly work in this setup and do on my other systems.
The only fix I found was to disable Secure Boot alltogether.
Running a Linux 5.8 with default firmware setting produces ACPI errors on each key press.
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP3], AE_NOT_FOUND (20200528/psargs-330) ACPI Error: Aborting method \_SB.GPIO._EVT due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
This can be "fixed" by setting a strategic setting inside the firmware:
Sleep State to