How to enable Real-time Ubuntu

The approach to enable and install Real-time Ubuntu differs according to your Ubuntu edition. Follow the instructions that match your edition to ensure a correct installation.

Ubuntu Server / Desktop

Ubuntu 26.04 LTS (Resolute Raccoon) or newerUbuntu 24.04 LTS (Noble Numbat) or earlier

Real-time Ubuntu can be installed from the main archive:

sudo apt update
sudo apt install ubuntu-realtime

Note

On Raspberry Pi, install linux-raspi-realtime instead:

sudo apt update
sudo apt install linux-raspi-realtime

Refer to Real-time Ubuntu releases and Ubuntu release documentation for more information about Ubuntu releases and which support real-time.

Ubuntu Core

To install the real-time kernel on an instance of Ubuntu Core, refer to How to install the real-time kernel on Ubuntu Core.

To create an Ubuntu Core image with the real-time kernel, refer to How to install the real-time kernel on Ubuntu Core.