Nginx 1.6.3 to 1.8 upgrade

I'm on Linux Mint LMDE. I just receive a upgrade of nginx from 1.6.3 to 1.8.0 with aptitude and now, I got blank page on all my websites

Here my configuration :

    server {
        listen 80;

        root /var/www/phpmyadmin;
        index index.php;

        server_name phpmyadmin.loc;

        location / {
                try_files $uri $uri/ =404;
        }

        location ~ \.php$ {
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_pass unix:/var/run/php5-fpm.sock;
                include fastcgi_params;
        }

        location ~ /\.ht {
                deny all;
        }
}

It's a basic configuration for phpmyadmin...

I got access log when I go to my index.

127.0.0.1 - - [07/May/2015:11:53:51 +0200] "GET / HTTP/1.1" 200 31 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36"

But no error log, and blank page

Anyone could help me ?

I was having the same issue. It turned out the the problem was caused by SCRIPT_FILENAME fcgi param. When I added it to virtual host config everything started working:

location ~ \.php$ {
    include fastcgi_params;
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}

replace

include fastcgi_params;

with

include fastcgi.conf;

and remove fastcgi_param SCRIPT_FILENAME ... in nginx.conf