How to Update Kernel on Debian Testing – Step-by-step

How to Update Linux Kernel on Debian Testing – QuickStart Guide

Hi! This tutorial will guide you step-by-step on How to Update/Upgrade Linux Kernel in Debian Unstable Testing GNU/Linux.

With the latest Kernel, Debian gains improved hardware support, performance enhancements, and the latest filesystem updates, making it ideal for modern desktops and servers.

This guide shows you how to update the Kernel on Debian Testing using official and secure sources, ensuring full compatibility with your current system.

Upgrading the Kernel can resolve driver issues, improve power management on laptops, and unlock features needed by newer CPUs and GPUs.

Alternatively, if you need a truly cutting-edge Kernel or want full control over features and modules, you can build your own Custom Kernel from Source. See this complete step-by-step guide: How to Build a Custom Kernel in GNU/Linux Distros.

Finally, this guide includes detailed instructions about to Updating Linux Firmware

1. 1. Terminal Getting-Started Guide

   How to Quick-Start with Command Line on Debian GNU/Linux

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   Console Debian Linux QuickStart Guide

   Getting-Started with Command Line on Debian Linux.

   First Update the Apt Repo Sources with:

   sudo apt update

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.

2. 2. Updating System

   Now it’s recommended to Update System
   With:

   sudo apt upgrade

   And in case of a New Kernel setup then to Reboot:

   sudo reboot

   You can confirm the Kernel version after reboot with:

   uname -r

   If it’s not the setup you need, see How to Build a Custom Kernel in GNU/Linux Distros .