emachine G725, screen backlight problem in OS

[harp]

I have laptop emachine G725, which suffer from some backlight issue or feature.
On hdd is installed linux, winxp and win7 with grub menu...

Everytime when booting, laptop start up with full brightness, which is iritating.
In stage where wait in grub menu, backlight can be manualy adjusted throu keyboard Fn+left, right... no problem, but whatever is choosen in this stage stay permanently locked when operating system boots up, so no more fn+left, right not working anymore in OS session. This behaveour is for linux and winxp, for win7 always boots with full brightness whatsoever is choosen in grub menu before.

Is anybody know how to overcome this, so that hardware function do what supose to do... to OS not hijacks hw functions anymore? Or at least, to save my prefered configuration when I shutdown system, and next time to boot from it?

[harp]

Re: emachine G725, screen backlight problem in OS

I have a "fix" for linux, manually change brightness... at least something
Hotkey offcourse not working.

nano backlight.sh

#! /bin/sh
echo "831200" > /sys/class/backlight/intel_backlight/brightness
exit 0

chmod u+x backlight.sh
cp backlight.sh /etc/init.d
cd /etc/rc2.d
ln -s /etc/init.d/backlight.sh
mv backlight.sh S01backlight.sh

reboot


With this, computer boots with full brightness, but change brightness within boot sequence.