[Bug 109206] Kernel 4.20 amdgpu fails to load firmware on Ryzen 2500U

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109206

--- Comment #52 from Talha Khan <evo8800 at gmail.com> ---
(In reply to Ondrej Lang from comment #50)
> I tested this yesterday with kernel 5.1.8 and if the file raven_dmcu.bin is
> present in the /lib/firmware/amdgpu/ folder when you are updating the kernel
> (or manually rebuilding the initramfs), the computer will boot with a blank
> screen next time.
> 
> There are 2 pieces to this. The linux-firmware package provides the binary
> files (i.e. the raven_dmcu.bin) so every time this package gets updated, you
> should rename/move the file and rebuild the initramfs. The linux-firmware
> updates are not as frequent as the kernel updates so if you do the
> workaround, you might go through several kernel updates without issues, but
> once linux-firmware updates, you have to repeat the workaround...
> 
> All the patch in the kernel will do is to ignore the raven_dmcu.bin file
> automatically (for raven 1 cpus) when building the initramfs so you don't
> have to rename/move it every time linux-firmware updates.

You're right, I had updated to 5.1.15 and it seemed the firmware files were
updated as well. I then had to perform the workaround in order to boot into the
system.

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