How to install and run pcsx2 in Ubuntu 15.10 x64

Unable to start pcsx2 on Ubuntu 15.10 64-bit

If you are affected by this bug reported three months ago, like me, you must be wondering how to run pcsx2 in Ubuntu 15.10 64-bit? When I tried to run it all I got was this ugly error:

Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine"   

Installation

Firstly, you have to install multiarch like this:

sudo dpkg --add-architecture i386 

sudo apt-get update

Then you need to add a Gregory's ppa:

sudo apt-add-repository ppa:gregory-hainaut/pcsx2.official.ppa 

sudo apt-get update

Now it's time to install it. And the trick is to install unstable 32-bit version:

sudo apt-get install pcsx2-unstable:i386

That's it. Happy playing!

*In Ubuntu 16.04 you don't have to install unstable 32-bit version.  Just add ppa and install pcsx2:

    sudo apt-add-repository ppa:gregory-hainaut/pcsx2.official.ppa

    sudo apt-get update

    sudo apt-get install pcsx2

**In Linux Mint 18 there is no need for extra settings,  just install pcsx2 with this command:

    sudo apt-get install pcsx2