How to upgrade Ubuntu kernel

Step 1

Check the existing kernel of your Ubuntu Linux:

uname -a

Step 2

Ubuntu maintains a website for all the versions of kernel that have been released. At the time of this writing, the latest stable release of Ubuntu kernel is 4.15. If you go to this link: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/, you will see several links for download.

Step 3

Download the appropriate files based on the type of OS you have. For 64 bit, I would download the following deb files:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500_4.15.0-041500.201802011154_all.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500-generic_4.15.0-041500.201802011154_amd64.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-image-4.15.0-041500-generic_4.15.0-041500.201802011154_amd64.deb

Step 4

Install all the downloaded deb files:

sudo dpkg -i *.deb

Step 5

Reboot your machine and check if the kernel has been updated by:

uname -a

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