Hi, you can follow the description on this homepage: https://kernelnewbies.org/FirstKernelPatch I learned from this document. That has some issues because it is not updated in all points but it works. I cannot update because I do not have the permission. Here the hints I wand to give you: Do not use: apt-get install python-ply python-git Use: apt-get install python3-ply python3-git When you use gmail with mutt: - activate dual factor authentication - use "app password" for mutt That is working fine. I also like to recommend the following youtube videos: "Write and Submit your first Linux kernel Patch" by Greg Kroah-Hartman - 12 years old but still very valid. Best entertainment about things went wrong with patches: LCA13: Keynote Greg Kroah-Hartman "I don't want your code" Bye Philipp