(note that I haven't checked that one thoroughly so be wary as kernels are dangerous beasts) None of the above answers satisfied my problem of manually update the kernel to the latest stable version.(My current laptop is very sensitive to RCs, Dell XPS 9365).Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Simply download the Ubuntu Mainline Kernel Updater script and run it from a terminal.
It will download the .deb's for you, install the new kernel, and optionally remove the old one (not recommended) then optionally reboot.
New kernels do have security and slight performance upgrade but also have tendency to break things like your VM.
Another option is to try customized and optimized builds, such as this i3/i5/i7 optimized 3.2.1 kernel for Ubuntu: Duo Petal Flower, My Experiments with Linux - 3.2.1 kernel He also has Intel atom optimized builds which can work quite well if you're trying to squeeze every last ounce of performance out of a netbook.
Thus I remove it's battery and rebooted and typed the command.
Also i don't suffer from my black screen issue any more.
I'm currently running the 3.3.3 precise kernel on oneiric and my machine works better than ever.
Performance & battery life increased, while temperatures dropped a few degrees.
I used it to fix my Wi Fi issue as sometimes some new hardware won't be detected by old kernel.
Other than hardware driver update I don't find the need to upgrade kernel.