Installing kernel 6.8-test on Ubuntu 22.04 LTS

Install kernel-6.8-test with original Ubuntu patches on 22.04 LTS:

1. Advised: update system first

sudo apt update && sudo apt upgrade -y

2. Download and install kernel packages from the Ubuntu kernel page:

wget -c https://kernel.ubuntu.com/mainline/v6.8/amd64/linux-headers-6.8.0-060800_6.8.0-060800.202403131158_all.deb
wget -c https://kernel.ubuntu.com/mainline/v6.8/amd64/linux-headers-6.8.0-060800-generic_6.8.0-060800.202403131158_amd64.deb
wget -c https://kernel.ubuntu.com/mainline/v6.8/amd64/linux-modules-6.8.0-060800-generic_6.8.0-060800.202403131158_amd64.deb
wget -c https://kernel.ubuntu.com/mainline/v6.8/amd64/linux-image-unsigned-6.8.0-060800-generic_6.8.0-060800.202403131158_amd64.deb

sudo dpkg -i *.deb

3. Update grub

sudo update-grub

4. Reboot