Custom kernel version is not correctly detected by Grub

[Olli]

[HowTo] Build your very first custom kernel

Difficulty: ★★★★☆ If you compile your own custom kernel, you’re basically creating your own distro, so before you post any support questions here on the forum, please revert back to the Manjaro kernel first! To start, grab the Linux kernel source. Go ahead and head to kernel.org, and choose the kernel you want to compile. I’ll use the mainline kernel as an example, which is 5.11-rc2 at the time of writing this post. You can grab it with git clone or wget the download link to it if…