Lenovo G570 Compatibil​ity with Ubuntu 12.04 LTS

Last time when I installated Ubuntu 11, I severly had power regression problems.
So, I heard that such bugs are fixed in 12.04 LTS ( fixed in Linux Kernel ). I would like to know from other G570 users about how Ubuntu 12.04 LTS is working??
1. How power management is working? Is it as good as in windows?
I do have another issue in handling hybrid graphics. My laptop has 1GB ATI Radeon HD 6370M graphics along with Intel in build. I am aware that Linux doesn't provide a seamless swithcing of graphics on run time but how well we can do that?
what's the best way to do that??

I use debian with single GPU does it count ? what are your kernel patch ?
http://rzr.online.fr/q/lenovo# g470 s103t (Please Contact me if your s10-3T is booting win7 or support bluetooth, 3g)
Lenovo S10-3t | Model Name : 0651 | Mfg Date: 2010/06/08
Lenovo G470 | Model Name : 20078 | M fg Date: 11/03/23 | BIOS: 40CN23WW(V2.09) 06/20/2011 | CPU: i5-2410M | Linux version 3.3.4lenovog470+ (root@lap) (gcc version 4.6.3 (Debian 4.6.3-4) ) #8 SMP Tue May 1 10:23:48 CEST 2012
OS:GNU/Linux/Debian

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