A tool for installing the latest Linux kernels on Ubuntu-based distributions.

• Fetches the list of available kernels from the Ubuntu Mainline PPA
• Optionally watches and displays notifications when a new kernel update is available
• Downloads and installs packages automatically
• Display available and installed kernels conveniently
• Install/Uninstall kernels from gui
• For each kernel, the related packages (headers & modules) are installed or uninstalled at the same time

Minimal .deb packages are in releases. (Usually just a single deb for any given release).

Better: cappelikan maintains a PPA

sudo add-apt-repository ppa:cappelikan/ppa
sudo apt update
sudo apt install mainline

sudo apt install libgee-0.8-dev libjson-glib-dev libvte-2.91-dev valac aria2 lsb-release aptitude make gettext dpkg-dev
git clone https://github.com/bkw777/mainline.git
cd mainline
make
sudo make install

Look for System -> Ubuntu Mainline Kernel Installer in your desktop's Applications/Start menu.

Otherwise:
CLI

mainline --help
mainline

GUI

mainline-gtk

• Secure Boot -> Possibly useful, I have not tried: https://github.com/M-P-P-C/Signing-a-Linux-Kernel-for-Secure-Boot

• Kernel versions 5.15.7+ and libssl3 -> Install libssl3

Written using Vala and GTK3.

mainline is a fork of ukuu
The original author stopped maintaining the original GPL version of ukuu and switched to a paid license for future versions.

• (from stevenpowerd) Options controlling the internet connection check
• (from cloyce) Option to include or hide pre-release kernels
• Changed name from "ukuu" to "mainline"
• Removed all GRUB options
• Removed all donate buttons, links, dialogs
• Remove source cruft
• Better temp and cache directory behavior
• Better desktop notification behavior

• Make the notification bg process detect when the user logs off and exit itself.
• Save & restore window dimensions.
• Move the notification/dbus code into the app and make an "applet mode"