Fix error linux Possible missing firmware /lib/firmware/amdgpu with latest kernel

Fix error linux Possible missing firmware /lib/firmware/amdgpu

Setup kernel linux 5.10

cd /tmp
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc3/amd64/linux-headers-5.10.0-051000rc3_5.10.0-051000rc3.202011082030_all.deb
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc3/amd64/linux-headers-5.10.0-051000rc3-generic_5.10.0-051000rc3.202011082030_amd64.deb
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc3/amd64/linux-image-unsigned-5.10.0-051000rc3-generic_5.10.0-051000rc3.202011082030_amd64.deb
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc3/amd64/linux-modules-5.10.0-051000rc3-generic_5.10.0-051000rc3.202011082030_amd64.deb
sudo dpkg -i linux*.deb

Run this script for install firmware for all install kernels

#!/bin/bash
cd /tmp
git clone https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware.git
sudo rsync -a linux-firmware/amdgpu/* /lib/firmware/amdgpu/
sudo update-initramfs -k all -u -v

PROFIT!