The primary source of information on building a custom kernel in fedora is here. This post will step you through that with an additional step to add the patches you may need.
🔗 Get the source
First, where-ever you feel like, clone the kernel packaging source, for example:
cd ~ && mkdir projects && cd ~/projects fedpkg clone -a kernel
Then cd in to the new directory and checkout the required branch matching the fedora release number you need:
cd ~/projects/kernel git checkout origin/f33
you can also checkout
f34 which will be the 5.11 kernel, and what the more recent patches will apply to.
To save work with git (not a compulsory step, but will help with updating), do:
git checkout -b patch-f33 git branch -u origin/f33
🔗 Prepare for build
🔗 Install deps
sudo dnf install fedpkg fedora-packager rpmdevtools ncurses-devel pesign grubby sudo dnf builddep kernel.spec
🔗 Edit kernel.spec
kernel.spec is where you will do most of the work, so open up that file in your
favourite text editor which is vim and search for this line:
# define buildid .local
and replace it with:
%define buildid .local
then a few hundred or so lines further down the file you will find lines like this one:
don't worry if that particular line doesn't exist, look for
This is where you will need to add patches, an example is adding the
patch required for ASUS laptops with the 0x1866 device (N-Key Keyboard). So below the
line above add:
# ROG Laptops Patch500: 0001-WMI-asus-Reduce-G14-and-G15-match-to-min-product-nam.patch Patch501: 0001-HID-asus-Filter-keyboard-EC-for-old-ROG-keyboard.patch Patch502: 0001-HID-asus-Add-support-for-2021-ASUS-N-Key-keyboard.patch
and lastly, grab the patches - they must be in the same directory as
and then build using
fedpkg --release f33 local (remember to replace f33 with the branch you checked out).
Update1: for whatever reason, the patches haven't been applying in the recent
builds so you may need to manaully add them before the
# END OF PATCH APPLICATIONS
ApplyOptionalPatch 0001-WMI-asus-Reduce-G14-and-G15-match-to-min-product-nam.patch ApplyOptionalPatch 0001-HID-asus-Filter-keyboard-EC-for-old-ROG-keyboard.patch ApplyOptionalPatch 0001-HID-asus-Add-support-for-2021-ASUS-N-Key-keyboard.patch
You can also build non-debug with:
make release fedpkg --release f33 local
make release is borked for the kernel builds for whatever reason. I'm looking in to it and will update instructions.
Update3: some laptops have touchpad issues, particularly Ryzen models. For these machines you need to edit
kernel-local so it contains
# This file is intentionally left empty in the stock kernel. Its a nicety # added for those wanting to do custom rebuilds with altered config opts. CONFIG_PINCTRL_AMD=y
All the rpm packages will be located in
~/projects/kernel/x86_64/, it's likely that
you will need to install all except the debug packages.
If you have any work to save,
git commit it, or
git stash pop if you stashed work.