Missing firmware for amdgpu

You can find firmware at linux-firmware git

It looks like the missing firmware files are there.

You can clone git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git and copy the missing files to /lib/firmware/amdgpu.

To save time for new users, and people unfamiliar with the terminal -- the following commands can be copied and pasted directly for ease of use. Please make sure to have git installed, if it's not open a terminal (ctrl + alt + t in most cases) and enter the following command: sudo apt install git -y

If apt complains about updating, update and upgrade with: sudo apt update && sudo apt upgrade -y

then install git with the first command.

The firmware files needed for this can be found at https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware.git

if you've already got git installed, this can be done by typing cd ~/Documents && git clone https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware.git

After you've cloned the repository using the above command it's important to put the files in the right place so the program "update-initramfs" can find them and make use of them.

To do this simply enter in the terminal the following command (for ubuntu, as of 18.04)

sudo cp ~/Documents/linux-firmware/amdgpu/* /lib/firmware/amdgpu && sudo update-initramfs -k all -u -v

The above commands assumes you are updating your initramfs image and will use all kernel versions available on the system at the time.

With all this done, APT should no longer complain. :D