problem with Bumblebee and Asus

[Giacomo Fontanelli]

Hi folks,
my name is Giacomo

I use Lubuntu 13.04.

My cmdline is BOOT_IMAGE=/boot/vmlinuz-3.8.0-31-generic
root=UUID=ebc56b7d-e979-4a24-9921-de2792253562 ro quiet splash vt.handoff=7
My hardware is

ASUSTeK Computer Inc.
baseboard-product-name: K73SV
baseboard-version     : 1.0
system-manufacturer   : ASUSTeK Computer Inc.
system-product-name   : K73SV
system-version        : 1.0
bios-vendor           : American Megatrends Inc.
bios-version          : K73SV.207
bios-release-date     : 07/01/2011

My kernel is

Linux Asus-K73SV 3.8.0-31-generic #46-Ubuntu SMP Tue Sep 10 20:03:44 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux

My bumblebee version is 3.2.1

my GPU is
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation
Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09)
(prog-if 00 [VGA controller])
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M
[GeForce GT 540M] [10de:0df4] (rev a1) (prog-if 00 [VGA controller]).

The problem is that I don't get any power saving.

I Found this problem upgrading the system from Lubuntu 12.10 to 13.04.

Today I tryed to Install the new Bumblebee 3.2.1, but the problem still
remain.

Could you help me?

Thank you
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