Package: linux-image-4.17.0-1-amd64 Additional information: I found below issue with recent Debian's official kernel package:
When building initramfs, for Debian's recent official kernel package located firmwares to /usr/lib/firmware and symlink /usr/lib to /lib. But, kernel wants to read firmwares from /lib , *and initial phase of kernel (maybe vmlinuz) don't understand symlink*. So, amdgpu kernel module fails to read firmwares. But,with homebrew kernel package (from vanilla and did "make deb-pkg"), building initramfs, firmwares are located /lib/firmware directly. I strange to understand why /lib/firmware moved to /usr/lib/firmware :-( PLEASE FIX ASAP. BEST REGARDS, Ohta.