mkdir /home/user/.disable-backlight

#!/bin/sh
#Saving user's current choice of display blanking mode
gconftool -g /system/osso/dsm/display/inhibit_blank_mode > /home/user/.disable-backlight/dim

#Let's disable screen blanking, so it won't get "dimmed", resulting in backlight getting enabled again...
#Disabling dimming and keeping blanking would be better, but settings allow only the opposite situation :(
gconftool -s --type int /system/osso/dsm/display/inhibit_blank_mode 3

#Disabling ambient light sensor's influence on screen brightness, for a while...
sed -ie 's/brightness-als/brightness-simple/' /etc/mce/mce.ini
stop mce || exit 1
sleep 1
start mce || exit 1
sleep 2

#Saving current backlight value, and disable backlight completely
cat /sys/class/backlight/acx565akm/brightness > /home/user/.disable-backlight/brightness
echo 0 > /sys/class/backlight/acx565akm/brightness

#bye bye
exit 0

#!/bin/sh
# Setting user's choice for dimming
DIM=$(cat /home/user/.disable-backlight/dim)
gconftool -s --type int /system/osso/dsm/display/inhibit_blank_mode $DIM

#Enabling ambient light sensor's influence on screen brightness, again...
sed -ie 's/brightness-simple/brightness-als/' /etc/mce/mce.ini
stop mce
sleep 1
start mce
sleep 2

#...and enabling initial backlight
BCL=$(cat /home/user/.disable-backlight/brightness)
echo $BCL > /sys/class/backlight/acx565akm/brightness

#bye bye
exit 0