https://bugs.freedesktop.org/show_bug.cgi?id=108585
--- Comment #3 from Dan Horák dan@danny.cz --- Ha, so it's the firmware stored in the initrds, what is different (lsinitrd lied). And the latest polaris11* ones provoke the crash. When I manually replaced them with the ones from the rc8 initrd, I've successfully booted into the 4.19 GA kernel.