A few weeks after being released the new version of Linux Kernel 4.14, we already have the second maintenance version among us, so this is an update that brings a lot of news, being a quite important update, since it is also a long-term support branch that will receive maintenance updates for the next few years
Kernel 4.14.2 is focused on improvement of the support for new hardware and many performance optimizations, making it the recommended version for all Linux PCs.
This version of the kernel Linux 4.14.2 it is noticeably better if you are using the cache from the BCache block layer, as there are known cases of Linux 4.14 causing data corruption. That problem has been resolved with Linux 4.14.2.
For those who are not familiar with BCache, is a means of pairing a higher capacity hard drive with an SSD smaller but faster to serve as a read / write cache for Linux.
How to install Kernel 4.14.2 in Ubuntu and derivatives?
In order to install this new maintenance version of the Linux Kernel on our system, we must download the packages already created by the Ubuntu team and install them, these commands can also be used in distributions derived from Ubuntu.
If you have a 32-bit computer, these commands are the ones you should apply, for this you must open a terminal and execute the following:
First we download the Linux Headers:
wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.2/linux-headers-4.14.2-041402_4.14.2-041402.201711240330_all.deb wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.2/linux-headers-4.14.2-041402-generic_4.14.2-041402.201711240330_i386.deb
And finally the kernel image with:
wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.2/linux-image-4.14.2-041402-generic_4.14.2-041402.201711240330_i386.deb
Now we only install them with this command:
sudo dpkg -i linux-headers-4.14.2*.deb linux-image-4.14.2*.deb
For installation in 64 Bit systems, we download the files with the following commands:
wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.2/linux-headers-4.14.2-041402_4.14.2-041402.201711240330_all.deb wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.2/linux-headers-4.14.2-041402-generic_4.14.2-041402.201711240330_amd64.deb wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.2/linux-image-4.14.2-041402-generic_4.14.2-041402.201711240330_amd64.deb
And we also install with this command:
sudo dpkg -i linux-headers-4.14.2*.deb linux-image-4.14.2*.deb
Finally we will only have to restart the computer for the changes to take effect and when we are in Grub, we must make sure that the system starts with the new kernel.
Now if you are a novice you can avoid doing it manually, you can use this tool that can help you do it for you, the link is this.