How To Install Linux Kernel 5.15 on Ubuntu 20.04 LTS

Install Linux Kernel 5.15 on Ubuntu 20.04

In this tutorial, we will show you how to install Linux Kernel 5.15 on Ubuntu 20.04 LTS. For those of you who didn’t know, Linux kernel 5.15 was released on October 31st, 2021, and it brings some interesting new features, such as a new NTFS file system implementation that doesn’t require you to rely on third-party software like NTFS-3G to fully manage your NTFS formatted external disk drives.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of Linux Kernel 5.15 on Ubuntu 20.04 (Focal Fossa). You can follow the same instructions for Ubuntu 18.04, 16.04, and any other Debian-based distribution like Linux Mint.


  • A server running one of the following operating systems: Ubuntu 20.04, 18.04, and any other Debian-based distribution like Linux Mint or elementary OS.
  • It’s recommended that you use a fresh OS install to prevent any potential issues.
  • A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install Linux Kernel 5.15 on Ubuntu 20.04

Step 1. First, make sure that all your system packages are up-to-date by running the following apt commands in the terminal.

sudo apt update
sudo apt upgrade

Step 2. Installing Linux Kernel 5.15 on Ubuntu 20.04.

  • Install Linux Kernel 5.15 using the PPA repository.

Run command in terminal to add the PPA to your Ubuntu system:

sudo add-apt-repository ppa:tuxinvader/lts-mainline

Once the Kernel 5.15 package is updated, use the command to install it:

sudo apt update
sudo apt install linux-generic-5.15
  • Install Linux Kernel 5.15 from the official page:

Now we open a terminal and run commands one by one to download and install the packages:

cd /tmp/
wget -c
wget -c
wget -c
wget -c

Next, install a new kernel using the following command below:

sudo dpkg -i *.deb

Once complete, you will need to reboot your system for the new kernel to be fully activated:


After logging back into your Ubuntu system, run the following command to check the kernel version running:

sudo uname -r



Congratulations! You have successfully installed Linux Kernel. Thanks for using this tutorial for installing the Linux Kernel 5.15 on Ubuntu 20.04 LTS Focal Fossa system. For additional help or useful information, we recommend you check the official Ubuntu website.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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