Investigate what Radeon extra firmware needs to be added both to initramfs and rootfs There is a [meta-amd][yocto] layer for Yocto, and Debian has [a package][debian] just for Radeon firmware. [yocto]: http://git.yoctoproject.org/cgit/cgit.cgi/meta-amd/tree/meta-amdfalconx86/recipes-kernel/linux-firmware/amdgpu-firmware.bb?h=master [debian]: https://packages.debian.org/buster/firmware-amd-graphics
