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How to update Ubuntu’s Kernel only

Introduction

This article show you how to update Ubuntu’s kernel using ukuu(Ubuntu Kernel Update Utility).

About ukuu

The following is the repository of ukuu.

teejee2008/ukuu

Kernel Update Utility for Ubuntu-based distributions. Provides desktop notifications when new mainline kernel is available. Lists kernels from http://kernel.ubuntu.com/~kernel-ppa/mainline/ with options to install and remove.

As written in the official documents, ukuu has following features.

  • Fetches list of kernels from kernel.ubuntu.com
  • Displays notifications when a new kernel update is available.
  • Downloads and installs packages automatically

I have installed it and it was very easy to use. I used the article below as reference.

Upgrade Kernel on Ubuntu 18.04

On Ubuntu operating systems, Ubuntu Kernel Update Utility (UKUU) is used to manage and update kernels. UKUU has a graphical and a command line frontend. It is really easy to use.

Premise

The following is my environment and premises.

  • OS : Ubuntu18.04
  • Kenel ver: 4.15.0-43-generic
  • Laptop:Thinkpad X1 Carbon 2018 model

Check the kernel version

First, let’s check kernel version using uname command.

$ uname -r
4.15.0-43-generic

-r option show release number only.

Install ukuu on Ubuntu

We need to add the repository of ukuu first.

$ sudo add-apt-repository ppa:teejee2008/ppa

Then, just install ukuu by apt.

$ sudo apt-get install ukuu

By the way, apt update will be executed automatically after you execute add-apt-repository since Ubuntu 18.04.
So you don’t need to execute apt update after you add repository.
Now you are all set.

Update kernel using ukuu

From the aplication menu, you can search 「ukuu」and you can see ukuu’s icon like the following. please click the icon.

After ukuu started, it will start loading the list of kernel’s version which is available.

Then, ukuu show you the list.

Let’s try to install the kernel 4.20 which is on the top by clicking「Install」.

After you clicked 「Install」, you need to put the password of root user. Then, ukuu start to load the kernel image you chosed and install it. It takes a little bit of time.

Upon completion of the installation, you will see the following window. please click 「Close」.

Then, you will see the following notice. please click 「OK」.

Finally, you can see「Installed」next to the version of kernel you installed.

After you installed the kernel, you need to restart Ubuntu. You can check your new kernel version using uname command after your restart.

$ uname -r
4.20.0-042000-generic

Conclusion

I show you how to use ukuu for updating kernel. ukuu makes it easy to install specific kernel.

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