Ubuntu 22.04 Jammy Jellyfish Linux, the latest long term support release from Canonical, is due to come out on April 21, 2022. As with all new LTS versions of Ubuntu, it will have a newer kernel version from other past releases of Ubuntu.
In this tutorial, we will discuss the kernel of Ubuntu 22.04, and show you how to check the kernel version on your own system. You will also see how to upgrade or downgrade the kernel version in Ubuntu.
In this tutorial you will learn:
- What is the kernel version in Ubuntu 22.04 Jammy Jellyfish?
- How to check the kernel version with commands
- How to upgrade or downgrade kernel version
|Category||Requirements, Conventions or Software Version Used|
|System||Ubuntu 22.04 Jammy Jellyfish|
|Other||Privileged access to your Linux system as root or via the
# – requires given linux commands to be executed with root privileges either directly as a root user or by use of
$ – requires given linux commands to be executed as a regular non-privileged user
When people say “Linux,” what are they actually referring to? Linux isn’t technically an operating system itself, but a kernel that serves as the foundation for a fully packaged operating system.
Ubuntu 22.04 Jammy Jellyfish Kernel Version
At the time of this writing, the current version of the Linux kernel on Ubuntu 22.04 is 5.13.0-19. But it is important to remember that this is only in the developer preview of the distro.
Ubuntu 22.04 is not yet released, and Canonical has not yet indicated which version of the Linux kernel will be included with the operating system. It can be tough to speculate about the upcoming version because Canonical will make a choice knowing that the operating system needs to have long term support for the next few years.
With this in mind, it is important to use an ultra stable kernel so that users can rely on the operating system and have the performance they have come to expect from Ubuntu.
How to Check Kernel Version
We can use the uname Linux command to see our system’s kernel version. Open a terminal and execute the following command to see yours.
$ uname -srm Linux 5.13.0-19-generic x86_64
The output shows us that we are running kernel version
Here is what each of these numbers mean:
5– Kernel version.
13– Major revision.
0– Minor revision.
19– Patch number.
x86-64 indicates the CPU architecture that the kernel is compiled for.
To see more information about your particular kernel build, which gives us distribution-specific details, you can also add the
$ uname -srmv Linux 5.13.0-19-generic #19-Ubuntu SMP Thu Oct 7 21:58:00 UTC 2021 x86_64
You can also check the kernel version of Ubuntu 22.04 with the other following commands:
$ hostnamectl AND $ cat /proc/version
How to Upgrade Ubuntu Linux Kernel
The kernel on your Ubuntu 22.04 Linux system should get upgraded along with all the other software packages you have installed. You can either use the GUI Software Updater tool, or run the following commands in terminal to upgrade the system kernel to the latest version:
$ sudo apt update $ sudo apt full-upgrade
apt full-upgradeis necessary here, not simply
apt upgrade, as many users are in the habit of typing. The
full-upgradeportion of the command will instruct Ubuntu to also upgrade the system kernel. You will then need to reboot the system in order to utilize the new kernel.
How to Downgrade Ubuntu Linux Kernel
When your Ubuntu system upgrades the Linux kernel, it will also keep the old one available on the system. This is done in case you encounter problems with the recently upgraded kernel, and have need to downgrade to the older version.
You can use the following command in terminal to remove the current kernel from your system, which should automatically downgrade you to the next most recent version.
$ sudo apt remove linux-image-$(uname -r) linux-headers-$(uname -r)
You will need to reboot your system after the downgrade, in order to start utilizing the other kernel.
In this tutorial, we learned about the kernel version for Ubuntu 22.04 Jammy Jellyfish Linux. We also saw how to check the kernel version through various command line methods, and how to upgrade or downgrade to a different kernel version. The kernel is the central part of the operating system, and keeping it up to date is essential for the continued security of stability of Ubuntu.