Step-by-step – Downgrade Kernel GUI Ubuntu 20.04 Guide

Dowgrading Kernel

2. 2. Installing Mainline

   How to Install Mainline GUI for Ubuntu GNU/Linux

   Mainline Ubuntu Installation Guide

   Mainline Tool Ubuntu Setup Tutorial

3. 3. Launching Mainline

   Then to Downgrade Kernel with Mainline Utility
   Simply run it from Shell:

   mainline

   Or use the Desktop Launcher:

   

4. 4. Installing Kernel

   Now to Install New Kernel on Ubuntu with Mainline
   After the Kernel List is fetched simply choose the Release and then “Install”:

   

   And in a little while the Kernel should be successfully setup:

   

   To Load it then Reboot, from Command Line with:

   sudo reboot

   And possibly on the Grub Splash Screen Choose the New Entry.

5. 5. Removing Kernel

   Possibly to Remove Kernel on Ubuntu with Mainline
   Again choose the Release and then “Remove”:

   

So Now I’m truly Happy if My Guide could Help you to Downgrade Kernel on Ubuntu 20.04 Focal!