Hi all I let you know that after upgrading to kernel 3.2.65-1+deb7u1 x86_64 my Debian 7.8 system can hibernate if uswsusp get installed.
Command "uname -a" shows: Linux PC-Giuseppe 3.2.0-4-amd64 #1 SMP Debian 3.2.65-1+deb7u1 x86_64 GNU/Linux Kind Regards Giuseppe