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Changing the default kernel in Ubuntu 20.04 can help resolve hardware or compatibility issues. Here are the steps to set a specific kernel version as the default.
1. Edit GRUB Configuration
Open the Terminal and edit the GRUB configuration file:
sudo vi /etc/default/grubChange GRUB_DEFAULT=0 to GRUB_DEFAULT=saved.
Add the line GRUB_SAVEDEFAULT=true.
Save and exit the file.
2. Update GRUB
Run the following command to update GRUB with the new settings:
sudo update-grub3. Select Kernel at Boot
Reboot your system and hold the Shift key to access the GRUB menu.
Choose the desired kernel version from the list. This will now be set as the default kernel.
Alternative Method: Specify Kernel Version Directly
Edit GRUB Configuration
Open the Terminal and edit the GRUB configuration file:
sudo vi /etc/default/grubFind GRUB_DEFAULT and specify the path to the desired kernel entry, e.g., GRUB_DEFAULT='Advanced options for Ubuntu>Ubuntu, with Linux 5.4.0-48-generic'.
Save and exit the file.
How to change default kernel in Ubuntu 22.04 | 20.04 LTS
Before changing the default kernel of Ubuntu Linux, let’s first check what version is running on our system. For that, open your command terminal. If you are using the GUI desktop version, you can open it using the keyboard shortcut Ctrl+Alt+T. See more
Let’s ensure everything on our system is up to date, and then we will move to the next step. Hence, first, run the apt update & upgrade command, plus also install wgettool as well. See more
Althoughthe user can directly download the Kernel Deb binary package from Ubuntu’s Linux repository to easily install, update, and … See more
We can update the default version or change it to any other available one we want, but first, we need to install it. Here is the command: To install the latest available: See more
Now that the script is in place, we can use it to check what versions are available to install in addition to the ones already on our system. To find … See more
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