Ubuntu change default kernel. Aug 6, 2025 · A guide to the wsl.

Ubuntu change default kernel. 0-36 generic. We‘ll be covering topics like: What the kernel actually does […] Sep 28, 2015 · You will have to delete kernel the 3. 04. Learn how to install Grub Customizer on Ubuntu 24. 0-73-generic is the default kernel on 22. We know that old kernel can boot your system correctly and you want to test new kernel. wslconfig files used for configuring settings when running multiple Linux distributions on Windows Subsystem for Linux. Jul 7, 2023 · If you need to downgrade the Kernel version on Ubuntu Linux, here's how you can safely do this with the linux-image and related packages. I have installed kernel 4. Jul 30, 2025 · Assume that the desired default kernel to boot from is the third one. 04 LTS Focal Fossa or Ubuntu 22. On Red Hat Based Systems you can use grubby for this kind of configurations. Grub will remember your selection; and this kernel will remain the default kernel to be booted by Grub automatically, until you select a different one in your Grub boot menu. First, make sure that you can easily get to grub during boot time, so that you can select which kernel you want the system to boot with. It has been completely rewritten to provide the user significantly increased flexibility and You should have been redirected. The parameter value that needs to be updated is for GRUB_DEFAULT. As the computer starts, GRUB 2 either presents a menu and awaits user input or automatically transfers control to an operating system kernel. 04 installation with Grub Customizer! This easy-to-use tool lets you change the boot order, add custom entries, and more. This page describes the new file structure and details how to the user can change the default settings used to create the boot menu. Introduction These release notes for Ubuntu 24. Jun 24, 2022 · Want to boot into an older available Linux kernel version by default? Here's how to downgrade the Linux kernel. 14 as default kernel. 04 Default Version: 2 Windows Subsystem for Linux was last updated on 6/7/2022 WSL automatic updates are on. In general, how can I change the default entry line to match the kernel I want and not a seemingly random one picked by GRUB? I also tried putting the following lines in /etc/default/grub: Apr 1, 2022 · 4 Another useful technique is to have grub default to the last kernel booted. replacing where the Ubuntu OS in the menu points towards? Oct 31, 2022 · Does this answer your question? Set "older" kernel as default grub entry - This question has been asked and answered, you were just using the wrong terms. Jun 16, 2024 · How to switch from the default Ubuntu kernel to the HWE kernel for fun and profit. Also, is it possible to save the dump file by the name of the crashed May 29, 2025 · If you experience any issues running Linux kernel 6. Use a Bash terminal on your Windows machine run by your preferred Linux distribution - Ubuntu, Debian, SUSE, Kali, Fedora, Pengwin, Alpine, and more are available. Starting with Ubuntu 23 Because Ubuntu to keep all previous versions of the kernel. 3, it now has Kernel 6. First, we can set the default boot entry with the grub-set-default command: $ sudo grub-set-default 0 The command takes the zero-based index of the menu position. 10. Now I'm on a clean install of N37 and it doesn't work: Jun 7, 2022 · PS C:\Users\user> wsl --status Default Distribution: Ubuntu-22. Sep 18, 2021 · A while back my laptop running Ubuntu started hanging on boot after a kernel update, to make it work I had to revert to using an earlier kernel version from the boot screen. If you want to use a different kernel version, you need to: Verify that your Droplet uses internal kernel management. 9. 7-030407-generic' In all the docs I've found on google, it's suggested to: changed GRUB_DEFAULT in /etc/default/grub and update-grub but GRUB_DEFAULT doesn't effect submenu where my kernel is located. 04, Precise May 7, 2025 · Boot a specific installed Ubuntu kernel using grub-reboot and grub-set-default. Since both Notebook and Lab UIs essentially require the user to select a kernel (for new notebooks), it doesn't really come into play. 04 or above)? Feb 16, 2025 · To make it default during boot, you can use sudo update-grub command to update the grub bootloader configuration file and set the desired kernel as the default. 04? Sep 25, 2012 · The default kernel to boot is automatically changed to the new kernel if the /etc/default/grub GRUB_DEFAULT setting is 0 (the default setting) or the current default moves into the submenu. How do I change to the noop scheduler, and where do I make the change so that it is persistent ac Sep 14, 2020 · Since then the Azure-optimized kernel has been the default one for Ubuntu VMs on Azure installed by the official Azure Marketplace images. Open the /etc/default/grub file and change the value of GRUB_DEFAULT to "1>2", as shown in Figure 1. So, in this case, we’re going to find the topmost Ubuntu entry highlighted. Feb 2, 2022 · 0 I have been reading main questions on the form about changing the Ubuntu kernel by editing the GRUB_DEFAULT variable to point to your desired kernel version in submenu. On Ubuntu Core, when using the default GNU GRUB bootloader, kernel boot parameters can be configured either in the Gadget snap, or through system options. Maintaining a separate . Customize your boot menu effortlessly. I have always told people to put the non-Ubuntu OS which they would prefer to be default (eg. Jan 17, 2025 · I'd like this to be enabled by default/on boot. Also learn about easily installing mainline Linux kernel. My Google Fu must not be very good because I can't seem to find how to change the default boot kernel. This comprehensive guide will walk Ubuntu 22. 2 on Ubuntu 22. HTH, Karl Ok! Mar 20, 2015 · Is there a way to reboot with a different kernel version from the command line? I have Ubuntu PXE booted on a VM, and there is no graphical interface, but I need to downgrade the kernel (which is installed). 04 LTS Focal or 22. e. 16. Apr 28, 2016 · How to remove new kernel and make older default (16. 13. That stack can be enabled manually, but may also be pre-enabled with an Ubuntu LTS release. SET GRUB_DEFAULT=0 is for all intents and purposes an index number indicating the first entry. 10 (Karmic Koala). By rolling out Ubuntu 22. 04 (or above), how do I set the GRUB time and the default OS (that I see at boot time) as I'm dual-booting Windows (7/8) and Ubuntu (12. Is there also an option in Fedora 38 to boot with the last used kernel? And how do I do that? Sep 3, 2017 · Comments Warbo: How does this handle Ubuntu's adding of new kernels to the list? If I remember correctly any new kernels get added to the top of the list, so this would change the order of the entries and make any "default X" line point to the wrong entry. I installed N36 in late December and I seem to remember effectively changing the default kernel to boot into. 0-12-amd64" to change the default for one boot only. md Apr 4, 2024 · To fix it you might need to switch your Boot kernel from the latest (upgraded) to the previous (old) one, follow the steps below. Jun 7, 2023 · To get the latest Ubuntu Kernel, you need to download the recommended Kernel . To download the new Kernel . 2 one What y Dec 27, 2023 · Have you ever wondered what that Linux kernel thing is and why you need to update it? If so, you‘ve come to the right place! In this comprehensive 2500+ word guide, I‘ll be walking through everything involved with updating Ubuntu‘s kernel from the command line. The steps showcased in this blog can be followed for any version of Oracle Linux 7. 21, which is the 2nd one in the list: GRUB_DEFAULT=1 GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=0 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" After doing sudo update-grub, I rebooted the computer and the Sep 9, 2025 · After that, your Ubuntu will automatically boot with kernel 6. When advised to try using a particular kernel boot parameter, it is usually a good idea to first add the parameter temporarily for testing. Mar 18, 2024 · By default, GRUB loads the newest kernel on a Linux system. Steps to install the latest or change the default kernel version on Ubuntu 20. 14. 4 Jan 7, 2022 · After installing multiple Kernel versions on your system, you may find yourself in a situation where you need to modify your GRUB configurations. 8 by default If you want to keep your Ubuntu with multiple kernels, then you may tell Grub boot-loader to boot which kernel by default on every boot. Feb 12, 2009 · I just got the array. 0-43-generic) broke the backlight brightness adjustment setting of my laptop. Because a lot of the non-developers use Windows, I'd like to change the boot order to make it easier for them. May 4, 2023 · This article shows you how to upgrade to the latest Linux kernel in Ubuntu. In such situations, users may find it necessary to boot into an older Jun 20, 2022 · 1. 0-86-generic root=UUID=03a31723-1f61-4bae-ae5d-403cd35d0adc (and etc) and change the vmlinuz-x. 15 into 6. An update prevented my Amazon Elastic Compute Cloud (Amazon EC2) instance reboot. When I try it the suggested way with changing the Grub Config, it stops the machine. So, if we’re switching from our default kernel to an older LTS kernel, running update-grub alone won’t change the default. Jan 30, 2025 · Boot into an Older Kernel By Default in Ubuntu & Other Linux Ubuntu and various other Linux distributions often release kernel updates to offer better hardware support, improved security, and new features. 3 the deadline, cfq and noop I/O schedulers are deprecated. cfg) to include also that kernel version in the menu and put it as the default kernel (change the set default="0" to point to your 2. In this article we will review how to install a new kernel and make it bootable by default. Verify the Droplet’s Kernel Management Method Sep 23, 2021 · Using Ubuntu 20. 在下面的文件中 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" 中添加参数 Jul 19, 2025 · Want to boot with a different Linux kernel version by default? In this quick and clear tutorial, I’ll show you exactly how to select and set a different default kernel using GRUB on any Linux Could prove risky if something goes wrong but basically just change your grub (check /boot/grub/grub. The HWE stack can be used by desktop and server systems, as well as cloud or virtual images. 04 or 20. Follow these steps to customize and build the Ubuntu Linux kernel. It was basically stuck at the highest setting which is way too bright for me when working in the dark. Prevent Ubuntu from uninstalling an old kernel version If you have determined that you can successfully boot Ubuntu by using an older kernel version, the next thing to do is to prevent Ubuntu from automatically uninstalling that kernel version by following the instructions in this answer. So set the desired kernel by running: root@web01:~# grub-set-default 'Advanced options for Ubuntu>Ubuntu, with Linux 4. How to set permanently kernel boot parameters To permanently set a kernel boot parameter, we will edit the GRUB configuration file. This is an update about the transition of the forums to Ubuntu Discourse. . The first step is to identify the necessary packages that you need to install. This is because Jibri ( May 9, 2015 · I installed the latest kernel (4. 04 "Jammy Jellyfish" as example to upgrade the kernel version from its default 5. 05 kernel. 3 iso, the live boots with that kernel, but, in the installed system in hard disk it boots with the 6. 04 > Set default boot kernel for grub To set default boot kernel for grub in Ubuntu 22. Dec 30, 2010 · I need to add the boot parameter foo=bar to my kernel. Jan 15, 2012 · How can I change the default kernel to boot to be 2. Source: www. 0-48-generic # sudo apt-get install Mar 14, 2022 · If you want more flexibility, you might instead set GRUB_DEFAULT=saved, run update-grub, and then run grub-set-default "1>Debian GNU/Linux, with Linux 5. Installing a new kernel Display version of currently running Kernel: uname -r Example output: 4. in rc. 重启生效 Ubuntu 添加kernel启动参数 1. Now let's do it. Jun 10, 2025 · Modify kernel options ¶ When using the default GNU GRUB bootloader, kernel boot parameters can be customised without breaking the integrity of the TPM backed full disk encryption. How can I do this once for testing, and permanently if testing was a success? Sep 13, 2024 · Learn how to install Linux Kernel 6. In order for you to select which kernel to boot at boot time, you may have to hold the SHIFT button down right after your BIOS does its posting. Sep 30, 2021 · # How to Change the kernel in Ubuntu 20. Grub Customizer for Ubuntu 22. Sep 14, 2024 · In this tutorial, we learn the steps to install the latest kernel version on Ubuntu 24. 04 Linux using Mainline Kernel Script to get improvements on an existing system. Currently the boot or The most you can do is to change the default kernel version selecting from a list of predetermined and available amazon kernels that you want your instance to boot up with. May 29, 2025 · If you experience any issues running Linux kernel 6. Understand how to make changes persistent and load settings from files manually. 6. 0 and later. 5. Other methods are discussed here too. PS. Sep 23, 2021 · Using Ubuntu 20. 2. Recently I got a kernel update to version 5. 15 and you want to go back to Ubuntu’s default kernel or another kernel that’s installed on your system, press the Esc key when your computer boots to view the boot menu, then access the “Advanced options” boot entry and select a different kernel version from the list of available kernels. If you have not already done so, you can log into Ubuntu Discourse using the same Ubuntu The Ubuntu LTS enablement, or Hardware Enablement (HWE), stack provides newer kernel and X11 display support for existing Ubuntu LTS releases. After the update, the update GRUB configuration to launch the latest version, and can be manually selected when you start the previous version in the GRUB menu. La mayoría de los Linux actuales utilizan Grub2 para proporcionar un menú al inicio, lo que permite elegir qué sistema operativo, qué kernel o modo de recuperación arrancar. 04, Natty Narwhal and is the version installed with 12. Let’s emphasize that we need to set GRUB_DEFAULT=saved for the command to work. Learn about the Linux kernel at the core of the Ubuntu operating system. In this article, you will learn How to Upgrade Kernel on Ubuntu 20. Parameters can be modified either statically, by editing cmdline files, or dynamically, by specific system settings (by dynamically we mean that snapd API can be used to set them, but the parameters do survive across Jul 13, 2013 · So for our purpose, change the config file by changing the line for setting GRUB_DEFAULT to GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux 4. 16 series kernel for things to fall back to working by default. Linux distros provide the users with an extraordinary ability to keep multiple kernels About Kernel Boot Parameters This document provides simple instructions for adding a Linux kernel boot parameter to an Ubuntu system using GRUB 2. 4 version by default, so I don't need to enter Advanced options for Ubuntu, to choose a 5. Apr 15, 2024 · Some OS related issues could be fixed by installing a different Linux Kernel. 04 LTS, Oracle Enterprise Linux, or CentOS 5. It really only comes into play when a request is received to start a kernel and the kernel name is not specified in the request payload. It is normally used to make changes to the grub. In this article, we picked up Kubuntu 22. 15 kernel by default. 0 but I am failing to set it as the default. 0-39 to 5. Este es un tutorial paso a paso para principiantes que muestra cómo configurar el sistema operativo predeterminado o la entrada del kernel en el menú de inicio de Grub en Ubuntu, Linux Mint, Debian u otro Linux. Kernel version: 5. You can use something else if you prefer, and there are cases when doing so may be desirable; but if GRUB is working for you, sticking with it probably makes sense. 04 LTS? I need kernel 5. The reason why it has remained the same is because you had the hwe kernel installed on your 20. Dec 2, 2021 · 5. Grubby can be used to: Modify kernel boot entries Check and change May 20, 2020 · In this tab, you can either add an option from the " Add a kernel option " list, or click the " Edit GRUB configuration file " button then add/remove any option in the GRUB_CMDLINE_LINUX_DEFAULT line then save the file. Edit the /etc/default/grub file to contain the lines: GRUB_DEFAULT=saved GRUB_SAVEDEFAULT=true then run sudo update-grub This change will make the kernel you last booted the default, so until you boot another, that's what will be run. Mar 18, 2024 · We can interact with the GRUB menu from the command line. The GA Kernel is shipped by default in the first stable release of Ubuntu 22. 15, but now Fedora keeps booting with the 5. How can i do this on ubuntu 15. 04) Ask Question Asked 9 years, 4 months ago Modified 7 years, 5 months ago Nov 13, 2011 · I have an SSD in my laptop and I've been told that switching to the "noop" scheduler is preferred. 04 and Ubuntu 24. Dec 13, 2024 · This is a step by step beginner’s tutorial shows how to set the default OS or kernel entry in Grub boot-menu in Ubuntu, Linux Mint, Debian or other Linux. 04 with our step-by-step guide. What I have tried A) I However, you MUST prepend ‘Advanced options for Ubuntu’ to the kernel name as shown below since Ubuntu makes use of sub menus in the kernel listing. Update GRUB's default menu selection If you have more than one operating system on your computer, or if you prefer an older kernel to the latest one, you may want to choose your own default GRUB selection. 04 LTS (Noble Numbat) provide an overview of the release and document the known issues with Ubuntu and its flavours. sudo vi /etc/default/grub and, at the top, change GRUB_DEFAULT=0 to instead read GRUB_DEFAULT=your_kernel_name_from_grub. Oct 9, 2023 · Learn how to upgrade the kernel version in Ubuntu command line. 1. Sep 8, 2024 · To make this the default entry in the Grub boot menu; edit /etc/default/grub, find this line GRUB_DEFAULT=0, change it to GRUB_DEFAULT=Ubuntu k40, save the file, sudo update-grub, and reboot to test Apr 14, 2014 · I want to default boot an older Kernal of Ubuntu, what is the best way to do this? Feb 1, 2022 · Learn the steps to install the latest Linux kernel version on Ubuntu 20. 04 Get the best out of your Ubuntu 22. Suppose that the server has an old kernel and a new kernel available. 1 From the above message, I am assuming that I am using Linux kernel 5. cfg For selecting third option from "Advanced options for Ubuntu" submenu, edit /etc/default/grub file and set: Nov 27, 2023 · During the next reboot, you invoke the Grub boot menu, select the kernel which you want to start up, and boot it. kernel. It by default boots the first entry, while user can configure to automatically another menu Feb 22, 2023 · Steps to install the Linux kernel 5. Apr 15, 2025 · How to build an Ubuntu Linux kernel ¶ If you have patches you need to apply to the Ubuntu Linux kernel, or you want to change some kernel configs, you may need to build your kernel from source. 4. How to test this without crashing the server? I have read many articles and don't understand any of them. 2 as default (next should be 6. Jan 9, 2021 · I want to change the launch options of the Ubuntu option to launch a 5. 10 with Linux 5. 3 Kernel 5. GRUB 2 is a descendant of GRUB (GRand Unified Bootloader). Parameters can be modified either statically, by editing cmdline files, or dynamically, by specific system settings (by dynamically we mean that snapd API can be used to set them, but the parameters do survive Jan 31, 2022 · Linux Shout published a tutorial about changing the default kernel in Ubuntu Linux. org eee pc kernel. Oct 24, 2012 · GRUB is configured by the file /boot/grub/grub. Apr 2, 2022 · 2 I tried to change my grub file to select kernel 5. Dec 15, 2024 · By default your System will always boot with the latest installed kernel. 04 Jammy Jelly Fish to change the default one. Jun 10, 2025 · Kernel boot parameters ¶ Kernel boot parameters are used to enable, disable or configure kernel-specific features when the system boots. The approach used here is a common one: passing command line parameters via a bootloader. sudo update-grub. Please consider filing a bug report about the problem. Jun 8, 2012 · In Ubuntu 12. , I follow How to set default boot kernel in Ubuntu / Grub? and make a mistake. org. After removing the problematic kernel version, you should undo your bootloader change, or you'll forever be one step behind in kernel updates :-) So, either run sudo grub-set-default 0 or edit /etc/default/grub again to undo your change + run sudo update-grub, depending on which you originally did. GRUB 2's method of building the GRUB menu is vastly different from GRUB 0. Find and install the kernel version you want. We would like to show you a description here but the site won’t allow us. Mar 30, 2021 · Learn to use sysctl in Linux to modify kernel parameters. You can edit /etc/default/grub to change default boot options and As explained there: the default kernel name is rarely used. Jan 1, 2024 · In this tutorial I will share different examples on the usage of grubby command in Linux to modify kernel boot entries, check and change default kernel, list active installed kernel and many more. However, I was unable to find whether it would be possible to change the Ubuntu kernel in the main menu of grub i. Check current Configuration Nov 8, 2010 · To add a new kernel to grub2: Move your kernel to /boot/ Run sudo update-grub update-grub will scan your computer for kernels, and create a listing of available kernels at boot. How do Feb 15, 2015 · Press Esc to return to the previous menu. 04 will use 6. cfg, and save the change (you may like to keep a copy of the original file for safety). I could set the system to run this on boot (ie. 1) and want to boot into it instead of 3. Option 2: Configure Grub to boot Kernel 6. De Apr 16, 2013 · I want to change the default location of core dump files so that every time a core dump is generated ,it goes to that directory. You can update Kernel on Ubuntu like any other packages. 04 LTS Focal fossa or Ubuntu 22. 04 at this point. I updated my Ubuntu's kernel (Sputnik kernel for the Dell XPS 13) a couple of days ago but I quickly noticed that this new kernel (verson 3. How do I change the default kernel in GRUB that is loaded at startup? Apr 22, 2023 · GRUB 2 is the default boot loader for Ubuntu. 04 Linux and even older versions in case any existing newer version is causing issues using the Ubuntu Mainline Kernel Installer. You can use grubby also for changing the default boot entry, and for adding/removing arguments from a GRUB2 menu entry. 14 and you want to go back to Ubuntu’s default kernel or another kernel that’s installed on your system, press the Esc key when your computer boots to view the boot menu, then access the “Advanced options” boot entry and select a different kernel version from the list of available kernels. But when I run Ubuntu and use uname -a, I am getting a different I've installed Ubuntu PopOS on a Microsoft Surface Pro 4 and had to install a customized kernel to get much of the hardware to work. cfg file. Mastery of grubby leads to a more seamless and efficient computing experience within the realm of Linux-Unix systems. To switch from the default kernel to an older LTS kernel, we edit GRUB’s default configuration file. local) but I'm unsure if this is the "correct" way to do it. When using the default GNU GRUB bootloader, kernel boot parameters can be customised without breaking the integrity of the TPM backed full disk encryption (requires snapd 2. 16+ for some of my hardware to work well. 19. 04 Jammy Jelly Fish to change the default using the command terminal. Sep 1, 2024 · Learn the steps to install the latest Linux kernel version on Ubuntu 20. 102. config for each of these kernels would be extremely challenging, Kconfig options need to always match the desired value in order to have a kernel functional for the scope that it was designed for. menuentry 'Memory test (memtest86+, serial console 115200)' { I want to set the default kernel menuentry 'Ubuntu, with Linux 3. 04 users through installing or upgrading to the latest upstream kernel using the […] Jul 16, 2023 · Linux is a kernel. 6 entry). Most Linux today uses Grub2 to provide a menu on start-up, allowing to choose which operating system, which kernel, or recovery mode to boot. Apr 1, 2025 · Home > Ubuntu > Ubuntu 22. What you can do on 22. 4 version every time I boot. 04 | 22. 0. For Ubuntu 19. cfg, but on a modern Ubuntu, rather than editing this big and complex file directly, you edit a few settings in /etc/default/grub, and then run update-grub to rebuild it out of lots of separate bits. xx-x-xx-blahblah bit Nov 30, 2023 · There are so many tutorials teaching how to install the latest Kernel, while, this one is going to show you how to downgrade to the original GA (General Availability) Kernel 5. I want to revert to a stable kernel. It's the perfect way to personalize your Ubuntu experience. The Linux kernel supports a wide range of parameters, but only a few of them are relevant to real-time tuning. Its a bit inconvenient to have to do this manually every time you boot your machine, you can however change the default boot option that is used by grub. 09. It should be simple and easy to do. I didn't count the entry from 0 I want to set def Aug 8, 2025 · NOTE 2: The Kernel package works in Ubuntu 24. Maybe there is a bug or your software is not yet compatible. This allows you to pick what kernel you want to boot on next reboot, or set the default, without having to know much about how grub works or editing config files. 50+). 04 Jammy to change the default one using the terminal. I als Jan 6, 2022 · In order to change the default boot kernel, the grub configuration file /etc/default/grub needs to be edited. 04 release instead of the default one. 97. 15. Jan 31, 2024 · This tutorial will help you upgrade the Linux kernel on Ubuntu. The choices you are making are not the GRUB version, they are different kernel versions. 0 onwards, multiqueue is enabled by default providing the bfq, kyber, mq-deadline and none I/O schedulers. However, kernel updates can sometimes lead to unexpected issues or incompatibilities with certain hardware or software. Anyone needing support for Ubuntu or the official flavours should seek help at Ubuntu Discourse. For details of the changes applied since 24. x require a special "ec2" or "xen" kernel package, while newer distributions include the required drivers in the default kernel package. Jul 23, 2025 · Its efficacy in facilitating kernel updates, removals, and default configurations serves to simplify kernel management and augment system stability. The current version of GRUB is 1. 8. There are two methods discussed. So, I'm looking for a safe way to change 22. 04 on AWS (ec2), I wanted to change my kernel from AWS to a generic one. Older distributions such as Ubuntu 10. 3 with Linux 5. But first, let’s print its content out with cat: Oct 18, 2023 · GRUB 2 is the default boot loader and manager for Ubuntu since version 9. 4 days ago · How to modify kernel boot parameters ¶ The real-time performance-tuning features compiled into the kernel can be controlled by various means. Kernel boot parameters is good a reference Jul 17, 2019 · By default, your Droplet boots into the highest-versioned kernel. If not, click here to continue. 04 is install the hwe kernel again so that you can use kernel 5. 04 Linux Latest ###### tags: `Linux` `Kernel` `OS` Sohail Anjum Last update: 2021. Set which kernel the bootloader loads by default. 8 on next boot, as there’s no higher kernel series available. When I run sudo update-grub, the kernel I'm fiddling with Jun 24, 2022 · Reboot to see your change in effect. It manages and controls the hardware resources like I/O, memory and CPU for your device or computer. It works great! But it's not the default kernel. 04 use: Open /boot/grub/grub. If your intent is to modify an existing entry to use a different kernel you can edit /etc/boot/grub/grub. Hello, Unregistered. cfg to check which menuentry should be booted by default grep menuentry /boot/grub/grub. Upgrading to the newest Linux kernel on your Ubuntu system enables access to the latest performance improvements, hardware support, and security fixes. 2, and 22. K. 15 in Ubuntu 22. Aug 28, 2025 · Debian or Ubuntu kernel update or change- current kernel The currently available Linux kernel has the version: 6. Jun 29, 2020 · I am running ubuntu 20. 04 LTS. Possible Duplicate: How do I change the grub boot order? O. Although the custom kernel is installed it won't boot to that kernel. Ubuntu: Install Kernel and Set GRUB Default Kernel - ubuntu_update_booting_kernel. deb packages: Jul 23, 2017 · GRUB 2 is available for both, and is Ubuntu's default boot loader for both. This is because Jibri ( Aug 10, 2022 · With Oracle Linux offering customers a choice of two kernels, this technical blog describes how Oracle Linux customers can change the default kernel of an Oracle Linux system in a straightforward manner. 38-13? I know you can change the default OS in /etc/defults/grub, but this doesn't help me because I first need to select "Previous Linux Versions" to be able to boot the older kernel. 1, 22. One is manually installing a new kernel and the other uses a GUI tool providing even easier way. 04 LTS version, when I ran the "sudo apt update && sudo apt upgrade command" latest kernel has been downloaded but I don't know how to switch to the new kernel. 145 from ubuntu kernel ppa in my customized lubuntu 22. Aug 6, 2025 · A guide to the wsl. Dec 12, 2024 · This is a step by step beginner’s tutorial shows how to set the default OS or kernel entry in Grub boot-menu in Ubuntu, Linux Mint, Debian or other Linux. Grubby is a command-line tool used to display and update information for the lilo, elilo, zipl, yaboot, and grub bootloaders. conf and . However, Ubuntu LTS releases ship with older, stable kernels that lag behind upstream development. Can I uninstall the generic kernel and will it that the eee pc kernel the default? Dec 17, 2024 · The grub-set-default command is a utility used in Unix-like operating systems to configure GRUB (Grand Unified Bootloader), specifically to set which operating system or kernel version will load by default during the boot process. 8 and 3 would be the standard 4. Jun 28, 2022 · What is the best way to use the current stable kernel in ubuntu 22. You can either select a different kernel everytime you boot the system, or change the configured default kernel. 19 version on Ubuntu 20. Aug 27, 2017 · How can I roll back to the default (original) and correct kernel for my Ubuntu version? I installed a newer kernel and deleted all the other kernels from /boot. And do a reboot and hope it comes back! Dec 28, 2023 · Describe the question i i want to change kernel 6. Oct 21, 2023 · Hello everyone, After problems with the internet, I installed the LTS kernel 5. 0-12-amd64" to change the default until you change it back, or run grub-reboot "1>Debian GNU/Linux, with Linux 5. cfg and copy the full name of your old kernel. All the command samples below will be represented for Ubuntu linux distributive, it should not be a problem to find the relative commands for your specific Linux dist. 0 Once you have selected the one you want save the file (you will have to edit the file in root) and then use the command: sudo update-grub May 19, 2023 · Overview Ubuntu provides a wide variety of kernels for many different architectures and flavours, such as generic, lowlatency, cloud kernels, kvm, etc. 10, while Ubuntu 25. Aug 28, 2018 · In short: sudo view /boot/grub/grub. grubby is a utility for manipulating bootloader-specific configuration files. Now I am temporarily on kernel version 5. May 19, 2025 · Switch to a previous Linux kernel version and restore system stability by managing kernel selection and GRUB configuration. 4 (found: 2025-08-28). Aug 6, 2025 · Install Windows Subsystem for Linux with the command, wsl --install. 30 ### Check the available kernels: ```javascript= # sudo apt-cache search linux-image | grep generic ``` ### Install the kernel version you need from the list with correct version: ```javascript= # sudo apt-get install linux-image-5. Feb 1, 2022 · Now that you have the kernel installed, you need to change your boot configurations to select the older kernel as the default one. A help and support forum for Ubuntu Linux. 0-101-generic" Regenerate grub configuration file We now can generate the configuration file. Apr 28, 2016 · GRUB_DEFAULT=0 (or whatever your default is set too) Change that line to the kernel you want loaded looking at your list there it looks like 0 would be the standard 4. To see your current default kernel, use the --default-kernel option: $ sudo grubby --default-kernel I have both Windows 7 and Ubuntu installed on a shared machine. 04, please see the 24. Open a terminal and use nano or your preferred text editor to open the following configuration file with root privileges. May 29, 2024 · I know that you can make a specific kernel version/package default on grub but I don't want to be changing the default kernel every time a new patch update is installed. 04, and have a number of kernels installed ranging from the default ones to custom kernels I'm compiling locally. 0-47-generic' Now verify that the change got applied in the configs by A complete guide and tutorial on how to change the default ubuntu kernel. Problem summary I have an instance on AWS running Ubuntu 18. 0-76-generic Update current packages sudo apt update List available for installation kernels: sudo apt list linux-*image Jul 8, 2025 · Provides solutions to an issue in which a Linux virtual machine (VM) can't boot after applying kernel changes. 0-38 but then I was facing a lot of hardware issues. But sometimes you might not want that. The transition is complete and this forum is now closed to all new posts. The benefit of upgrading kernel is, among many others, to get faster and better hardware performance. The Linux distributions, as an example Debian or Ubuntu used new kernel versions only with some delay, accordingly the used kernel versions are usually somewhat older. deb files and install it using “apt install”. 5 in 22. There are variants to the default kernel for security, stability and performance. cfg find the appropriate line and adjust for example: linux /boot/vmlinuz-3. In a similar The kernel booted by default (using GRUB) is different from the one you would like to be automatically selected on startup. Jan 18, 2021 · My OS version is Ubuntu 20. Oct 17, 2022 · We need to change the kernel for some specific reason. Find the grub entry name with the following command: Aug 17, 2024 · I'm currently using ubuntu 22. 0-43 at this point. 2. 0 or Ubuntu 18. The kernel version is 5. 2 change summary. Mar 28, 2022 · As mentioned before, this change is only temporary and will reset for subsequent reboots. 99, which was introduced with Ubuntu 11. mbudf uobpdl vjoet fypmsc udvnq aax suvi jnxzk yqvgx bdxdf