First, check your current kernel version:
uname -r
If you want to upgrade or manually install a new kernel, one safe method is using the official Ubuntu Mainline Kernel builds.
To download and install a newer kernel version manually:
-
Go to the Ubuntu Kernel PPA:
https://kernel.ubuntu.com/~kernel-ppa/mainline/
Pick the version you want (e.g., v6.8.x). Right-click the .deb links for your architecture (usually amd64) and copy the link. Now use wget to download the packages. For example:
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.8.2/amd64/linux-headers-6.8.2-060802-generic_6.8.2-060802.202404031234_amd64.deb wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.8.2/amd64/linux-image-6.8.2-060802-generic_6.8.2-060802.202404031234_amd64.deb wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.8.2/amd64/linux-modules-6.8.2-060802-generic_6.8.2-060802.202404031234_amd64.deb
Then install them all together:
sudo dpkg -i *.deb
Once installed, reboot your system:
sudo reboot
After reboot, verify the kernel version:
uname -r
If the new version is shown, the installation was successful.
To remove older kernels later (optional):
dpkg -l | grep linux-image
Then use sudo apt remove to delete unnecessary old versions carefully.
Alternatively, you can use the mainline tool to install new kernels more easily:
First, add the repository:
sudo add-apt-repository ppa:cappelikan/ppa sudo apt update sudo apt install mainline -y
Launch it:
mainline
