Ubuntu updating kernel
This method helps you to manually download and install the latest available Linux kernel from kernel.website.If you want to install most recent version (either stable or release candidate), this method will help.Before updating Linux Kernel, it is highly recommended to backup your important data!
It seems there is no monthly subscription for Ubuntu servers and desktops. Good thing is monthly subscriptions are also available.
The following two methods doesn’t require system reboot and useful for updating Linux Kernel on production and mission-critical Ubuntu servers.
Canonical Livepatch Service applies Kernel updates, patches and security hotfixes automatically without rebooting the Ubuntu systems.
If you’re running a Linux operating system (like Ubuntu), it’s a good idea to check and update the kernel regularly.
The first two digits (in this case, 4.4) are the overall kernel package.