Comment 224 for bug 1776563

I don't know if it is the same problem, but the Lenovo notebooks Lenovo E585 and Lenovo E485 with Ryzen 5 2500U or Ryzen 7 2700U also do not boot on Linux. This is very frustrating, because you have to add command lines to GRUB make them even able to boot on Linux:

ivrs_ioapic[32]=00:14.0 ivrs_ioapic[33]=00:00.1
and
spec_store_bypass_disable=on or spec_store_bypass_disable=seccomp

Otherwise Linux does not boot.

Thanks to evilazrael who found that workaround, otherwise still no-one would be able to boot a Linux distribution on the laptop.

The initial analysis from him you find here:
https://evilazrael.de/node/401

An ongoing discussion of the case you find here:
https://forums.lenovo.com/t5/ThinkPad-11e-Windows-13-E-and/ThinkPad-E485-E585-Firmware-bug-ACPI-IVRS-table/m-p/4191484

It would be nice if it would be fixed, because many user will relinquish using Linux if it does not boot on the first time, and also all others users need a fix, because the workaround may reduces performance and increases power use.