WHITE SCREEN issue without any log running Ubuntu 14.04 and PHP 5.6 FPM [SOLVED]

I installed a new Ubuntu 14.04 server to be used as a Web Server.  My favorite web server is Nginx + PHP + PHP 5.6 using FPM at this time. I have done this many times in 12.04 without issue. However in Ubuntu 14.04 this issue stumped me for days, until I found the solution.  So I want to write this article to hopefully help somebody.

The ISSUE:
Since there is no error message and no log being written anywhere I can not show anything here.
The Nginx and PHP-FPM services started without issue. And I have tested Nginx to be working (it can serve static files like images and html files). However anything PHP can NOT be executed via Nginx. Once again... NO ERROR nor LOG was ever written (insane!!!).


The SOLUTION:
I totally missed the fact that the default fastcgi_params located in /etc/nginx did not have the following line:

fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;

Which is required and since my Nginx location block did not include the line above... nothing happens (I guess).

Here is the content of my PHP location block:

location ~ \.php$ {
# Prevent Zero-day exploit
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
# NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
# With php5-cgi alone:
fastcgi_pass 127.0.0.1:9000;
# With php5-fpm:
# fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
}

Here is the content of my /etc/nginx/fastcgi_params file:

fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;
fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  HTTPS              $https if_not_empty;
fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;
fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;
# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;

So that was it, the secret / culprit was just a single line (below), just make sure you have that included in your Nginx location block and it will work.

fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;