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Linux Kernel 4.0 RC1 is out, you can install, update and upgrade on Ubuntu 15.04 vivid Vervet, ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr (LTS) and Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana

Linux kernel is the essential part of any Linux operating system. It is responsible for resource allocation, low-level hardware interfaces, security, simple communications, basic file system management, and more. Written from scratch by Linus Torvalds (with help from various developers), Linux is a clone of the UNIX operating system. It is geared towards POSIX and Single UNIX Specification compliances.

What's new in Linux Kernel 4.0 RC1:

• The live patching infrastructure made some news, but my personal favorite features are actually some vm cleanups, where this release is getting rid of the largely unused non-linear remapping code (replaced with just emulating it with lots of smaller mappings) and unifies the NUMA and PROTNONE handling for page tables.

Linux provides users with powerful features, such as true multitasking, multistack networking, shared copy-on-write executables, shared libraries, demand loading, virtual memory, and proper memory management.

Initially designed only for 386/486-based computers, now Linux supports a wide range of architectures, including 64-bit (IA64, AMD64), ARM, ARM64, DEC Alpha, MIPS, SUN Sparc, PowerPC, as well as Amiga and Atari machines.

The most essential component of a Linux-based operating system is the Linux kernel. Without it, the entire system (libraries, applications, etc.) is useless. When creating a Linux distribution, it is also very important to know how to correctly optimize the Linux kernel package, in order to make it support certain hardware components or recognize a specific device.

Install/Upgrade Linux Kernel 4.0 RC1 on Linux Mint and Ubuntu derivative System :

For Linux System 32 bit :

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/linux-headers-4.0.0-040000rc1_4.0.0-040000rc1.201502222235_all.deb \ http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/linux-headers-4.0.0-040000rc1-generic_4.0.0-040000rc1.201502222235_i386.deb \ http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/linux-image-4.0.0-040000rc1-generic_4.0.0-040000rc1.201502222235_i386.deb

For Linux System 64 bit :

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/linux-headers-4.0.0-040000rc1_4.0.0-040000rc1.201502222235_all.deb \ http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/linux-headers-4.0.0-040000rc1-generic_4.0.0-040000rc1.201502222235_amd64.deb \ http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/linux-image-4.0.0-040000rc1-generic_4.0.0-040000rc1.201502222235_amd64.deb

For Low Latency Kernel 4.0 RC1 you can download deb file in this page.

Install Linux Kernel 4.0 RC1 : 

sudo dpkg -i *.deb

Atfer install complete, update grub and reboot your computer and choose new kernel in grub :

sudo update-grub
sudo reboot

The source is available now. Binary packages are in the process of being built, and will appear soon at their respective download locations.

WARNING: Installing a new kernel may render your system unusable or unstable. If you proceed with the installation using the instructions below, make sure you back up any important data you have to an external hard drive.