https://wiki.ubuntu.com/Kernel
    https://wiki.ubuntu.com/Kernel/FAQ
        cat /proc/version
        cat /proc/version_signature
            Ubuntu 5.15.0-37.39-generic 5.15.35
    https://wiki.ubuntu.com/Kernel/Debugging
    https://wiki.ubuntu.com/Kernel/KernelBisection
    https://wiki.ubuntu.com/Kernel/Dev
    https://wiki.ubuntu.com/Kernel/Handbook
    https://wiki.ubuntu.com/Kernel/Reference

https://wiki.ubuntu.com/Kernel/KernelBootParameters
    press e-key at grub
    go to the end
    after "quiet splash"
    or edit
        /etc/default/grub

to install latest
    sudo apt install --install-recommends linux-generic-hwe-22.04
    https://wiki.ubuntu.com/Kernel/RollingLTSEnablementStack
    https://ubuntu.com/kernel/lifecycle
        hwe-support-status --verbose
        https://ubuntu.com/about/release-cycle#ubuntu-kernel-release-cycle
to roll-back to base kernell
    sudo apt install --install-recommends linux-generic
    https://wiki.ubuntu.com/Kernel/LTSEnablementStack


2023
https://9to5linux.com/you-can-now-install-linux-kernel-6-6-on-ubuntu-heres-how
2022
https://9to5linux.com/how-to-install-linux-kernel-6-0-on-ubuntu-22-10
2021
https://9to5linux.com/how-to-install-linux-kernel-5-15-on-ubuntu-and-linux-mint
2018
https://www.linux.org/threads/kernel-updates.18152/#post-54550

current
    uname -r
    hostnamectl
    lsb_release -a
    cat /etc/*-release
    cat /proc/version
    cat /proc/version_signature
        Ubuntu 5.15.0-37.39-generic 5.15.35
list
    dpkg --list | grep linux-image
    apt list --installed | grep linux-image
    ls /boot/
        initrd.img -> initrd.img-6.2.0-26-generic
        initrd.img.old -> initrd.img-5.15.0-35-generic
        vmlinuz -> vmlinuz-6.2.0-26-generic
        vmlinuz.old -> vmlinuz-5.15.0-35-generic
remove old
    https://help.ubuntu.com/community/RemoveOldKernels
    sudo apt-get purge linux-image-<ver>-generic


Mainline GUI tool
https://www.linux.org/threads/ubuntu-mainline-kernel-installer.42421/
    sudo add-apt-repository ppa:cappelikan/ppa
    sudo apt update
    sudo apt install -y mainline
https://kernel.ubuntu.com/~kernel-ppa/mainline/
     However, even if they’re official, they are not signed, which means that you can’t install them
        on UEFI/Secure Boot systems if Secure Boot is enabled.
      As such, you will have to first disable Secure Boot to install Linux kernel 6.0.

1. sudo apt update && sudo apt full-upgrade
2. download
    MANDATORY:
    https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.0/amd64/linux-image-unsigned-6.0.0-060000-generic_6.0.0-060000.202210022231_amd64.deb
    https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.0/amd64/linux-modules-6.0.0-060000-generic_6.0.0-060000.202210022231_amd64.deb
    OPTIONAL:
    https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.0/amd64/linux-headers-6.0.0-060000-generic_6.0.0-060000.202210022231_amd64.deb
    https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.0/amd64/linux-headers-6.0.0-060000_6.0.0-060000.202210022231_all.deb
3. sudo dpkg -i *.deb