Trying to recovery home - Lost passphrase

Hi all,

I'm trying to recovery the home of 14.04 on laptop with live USB 15.10. I followed this:

http://ubuntuforums.org/showthread.php?t=2215496

I tryed:

ubuntu-gnome@ubuntu-gnome:~$ sudo ecryptfs-recover-private
INFO: Searching for encrypted private directories (this might take a while)...
find: File system loop detected; `/sys/keel/debug/pinctrl' is part of the same file system loop as `/sys/keel/debug'.
ubuntu-gnome@ubuntu-gnome:~$

Furthermore, I don't have the passphrase, but only the login pw; I saw this:

"Recovering Your Mount Passphrase

In the event that you did not write down your mount passphrase, you may be able to recover it by decrypting the file /home/useame/.ecryptfs/wrapped-passphrase using your login passphrase.

ecryptfs-unwrap-passphrase /home/useame/.ecryptfs/wrapped-passphrase
Type your login passphrase to reveal the mount passphrase

If your login passphrase matches the passphrase used to encrypt the wrapped-passphrase file, your mount passphrase will be written to screen. Record and protect this data accordingly.

If you have lost your wrapped-passphrase file, and you did not record your mount passphrase, it is impossible to access your encrypted data."

So I insert the login pw:

ubuntu-gnome@ubuntu-gnome:~$ ecryptfs-unwrap-passphrase /home/useame/.ecryptfs/wrapped-passphrase
Passphrase: 
Error: Unwrapping passphrase failed [-2]
Info: Check the system log for more information from libecryptfs
ubuntu-gnome@ubuntu-gnome:~$

Many thanks