How can I upgrade kernel to 3.1?

The Ubuntu kernel PPA doesn't have kernel 3.1. Is there any other guaranteed way to upgrade because I don't want to reinstall Ubuntu again.

Solution 1:

Apart from waiting for the kernel to appear in the PPA (it's been released what, a day ago?), another option is to download a tarball and to compile it from sources.

Waiting for a PPA is safe, compiling from sources is fun. You choose :)

Solution 2:

Kernels

A bit earlier there was a question: How to downgrade the Kernel on 11.10. Upgrading the kernel is not harder.

You could download the kernel binaries from the old or new Ubuntu releases¹. The Precise² has the 3.1. Also the Kernel Mainline build³ has the 3.1.

Donwloading from the Mainline the linux-image-3.1.0-030100rc10-generic. Installing it. Rebooting with it and the (K)ubuntu 11.10 is running with the 3.1.

Links

2. http://packages.ubuntu.com/precise/linux-image
3. https://wiki.ubuntu.com/Kernel/MainlineBuilds

Solution 3:

I think kernel team have uploaded the 3.1 kernel here http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.1-oneiric/