Kernel

This is valid on Ubuntu based distributions only.

Manually install a kernel

  1. Download the kernel you want using this link: https://kernel.ubuntu.com/~kernel-ppa/mainline/

    Make sure to download all the packages corresponding to your architecture (“amd64” in most case)

  2. Install the packages using:

    sudo dpkg -i *.deb

List installed Kernels

dpkg --list | grep linux-image
# or
find /boot/vmli*

Uninstall/Remove a kernel

Source: https://askubuntu.com/questions/1253347/how-to-easily-remove-old-kernels-in-ubuntu-20-04-lts

List install kernel(s) module(s):

dpkg --list | egrep -i --color 'linux-image|linux-headers|linux-modules' | awk '{ print $2 }'

Uninstall kernel you don’t need with sudo apt purge:

sudo apt purge linux-headers-5.6.11-050611  linux-headers-5.6.11-050611-lowlatency linux-image-unsigned-5.6.11-050611-lowlatency linux-modules-5.6.11-050611-lowlatency

Warning

Of course, do not uninstall the kernel you are currently using, you can check which kernel you’re running with the command uname -a.

Sources: