GNU/Linux Ubuntu 21.04 Installing Kernel 5.12 Guide
Hi! The linked Tutorial Shows You Step-by-step How to Update to Linux Kernel 5.12 in Ubuntu 21.04 GNU/Linux Desktop.
And Kernel 5.12 for Ubuntu 21.04 is easily installed by the Mainline Kernel Updater GUI Tool.
Moreover, the Mainline Features:
Fetches Kernel list from kernel.ubuntu.com
Optionally watches and displays notifications when a new kernel update is available
Downloads and installs packages automatically
Display available and installed kernels conveniently
Install/remove kernels from gui
For each kernel, the related packages (headers & modules) are installed or removed at the same time