Hello Linux Geeksters. As you may know, Kernel 3.15 RC1 has been released a while ago, coming with support for new hardware, including: the NVIDIA Maxwell GPU and AMD VCE, enhanced support for Intel Broadwell and EFI mixed mode support. For information about this release, see the mailing lists.

In this article I will show you how to install Kernel 3.15 RC1 on Ubuntu, Linux Mint and their derivative systems.
Because the needed deb packages are available via kernel.ubuntu.com, installing Kernel 3.15 RC1 on Ubuntu, Linux Mint and derivative systems is easy. Follow the instructions for your architecture exactly, in order to get a successful installation.
How to install Kernel 3.15 RC1 on 32 bit Ubuntu, Linux Mint and Elementary OS systems:
Download the needed packages:
$ wget kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/linux-headers-3.15.0-031500rc1_3.15.0-031500rc1.201404131835_all.deb
$ wget kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/linux-headers-3.15.0-031500rc1-generic_3.15.0-031500rc1.201404131835_i386.deb
$ wget kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/linux-image-3.15.0-031500rc1-generic_3.15.0-031500rc1.201404131835_i386.deb
Install Kernel 3.15 RC1:
$ sudo dpkg -i linux-image-3.15*.deb linux-headers-3.15*.deb
How to install Kernel 3.15 RC1 on 64 bit Ubuntu, Linux Mint and Elementary OS systems:
Download the needed packages:
$ wget kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/linux-headers-3.15.0-031500rc1_3.15.0-031500rc1.201404131835_all.deb
$ wget kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/linux-headers-3.15.0-031500rc1-generic_3.15.0-031500rc1.201404131835_amd64.deb
$ wget kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/linux-image-3.15.0-031500rc1-generic_3.15.0-031500rc1.201404131835_amd64.deb
Install Kernel 3.15 RC1:
$ sudo dpkg -i linux-image-3.15*.deb linux-headers-3.15*.deb
To uninstall the kernel, do:
$ sudo apt-get remove linux-image-3.15* linux-headers-3.15*