The main line of Linux Kernel 3.12.7 has been released, and this short tutorial will show you how to upgrade in Ubuntu. If you are running Ubuntu 13.10 or a later version, it also happens that your system is not installed with the latest kernel. Read it.
Linux Kernel is the core of the linux operating system, including Ubuntu. The kernel enables Ubuntu to communicate with system hardware (memory, CPU, devices, and so on. The kernel manages resources and manages all the important parts of your machine.
Without Linux Kernel, Ubuntu is just a fantasy application that cannot connect to hardware or all the important parts of your machine. This is why Linux Kernel is so important.
Why upgrade your Ubuntu Kernel?
Before upgrading your system kernel, the first thing you need to know is that the upgrade may damage your system and make it unusable. In fact, you are not recommended to upgrade the kernel yourself. Ubuntu's head office Canonical has done a good job in Ubuntu kernel upgrade.
Before the new version is released, they test and confirm that the kernel installation is compatible. Therefore, if your device works well and there is no problem, you should keep the existing kernel and do not upgrade it.
On the other hand, upgrading Linux kernel may be helpful if Ubuntu cannot identify all system components or your device functions are incorrect.
This is because the new kernel adds new drivers and features to your new machine. If the installed kernel does not support some features on the machine, upgrade it.