Laptop starts with "Advanced power management level: 1"

Binary package hint: hdparm

after the boot of ubuntu i type
sudo hdparm -I /dev/sda | grep "Advanced power management level"
Advanced power management level: 1
(this is in Battery mode)
this is really bad because it will kill my hdd sometimes in 1 only year. i have tried many things like /dev/sda {
        apm = 254 # Netzbetrieb
 apm_battery = 128 # Batteriebetrieb
 spindown_time = 0 # kein Anhalten des Spindelmotors
}
in the /etc/hdparm.conf and all i cand find on the internet. but nothings works here. now i have in my /etc/rc.local
hdparm -B 128 /dev/sda

this works but after a suspend its back to 1 and it dont change (to 254) after i plugged in the power device
i know its some kind of bios bug but windows rund without that problem and i think ubuntu can do that to.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: hdparm 9.27-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
Date: Sat Sep 25 13:33:02 2010
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Alpha i386 (20100919)
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: hdparm