Vamos adicionar o repositório do Linux Libre pra instalação do Kernel Libre:

# rpm --import http://linux-libre.fsfla.org/pub/linux-libre/SIGNING-KEY.linux-libre
# rpm -i http://linux-libre.fsfla.org/pub/linux-libre/freed-ora/freed-ora-release.noarch.rpm

Agora remova os firmwares e microcode:

# dnf remove *-firmware microcode_ctl -y

Instale agora o kernel-libre:

# dnf install kernel-libre-core kernel-libre-cross-headers kernel-libre-devel kernel-libre-headers kernel-libre-modules kernel-libre-tools-libs
# dnf install perf-libre -y

Só reiniciar a máquina e pronto. Guia de referência: ::[FSFLA]:: GNU Linux-libre project