How to Install / Upgrade to Linux Kernel 3.15

Linux Kernel 3.15 has finally been announced by Linus Torvalds and there's much more to offer from Linux. 

What's new in Linux Kernel 3.15

• USB: Avoid runtime suspend loops for HCDs that can't handle suspend/resume
• drm/radeon/dpm: resume fixes for some systems
• USB: serial: option: add support for Novatel E371 PCIe card
• x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
• usb: cdc-wdm: export cdc-wdm uapi header
• Btrfs: send, fix corrupted path strings for long paths 

You can read what Linus Torvalds has to say and all the things Linux Kernel 3.15 has to offer at https://lkml.org/lkml/2014/6/8/70

Install / Upgrade to Linux Kernel 3.15 

Run these commands in a terminal one-by-one to install / upgrade to Linux kernel 3.15.

For 32-bit system

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/linux-headers-3.15.0-031500-generic_3.15.0-031500.201406081435_i386.deb 

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/linux-headers-3.15.0-031500_3.15.0-031500.201406081435_all.deb 

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/linux-image-3.15.0-031500-generic_3.15.0-031500.201406081435_i386.deb 

sudo dpkg -i linux-headers-3.15.0-*.deb linux-image-3.15.0-*.deb

For 64-bit system

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/linux-headers-3.15.0-031500-generic_3.15.0-031500.201406081435_amd64.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/linux-headers-3.15.0-031500_3.15.0-031500.201406081435_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/linux-image-3.15.0-031500-generic_3.15.0-031500.201406081435_amd64.deb

sudo dpkg -i linux-headers-3.15.0-*.deb linux-image-3.15.0-*.deb

Once done, restart your computer to see the changes. 

If for some reason, the Linux Kernel 3.15 install / upgrade do not works properly, you can roll back to previous stable kernel by Navigating to Grub > Advanced > Select previous kernel and running this command to uninstall it

sudo apt-get remove linux-headers-3.15.0-* linux-image-3.15.0-*

and updating the grub menu

sudo update-grub