asus-ul30 team mailing list archive

[Bill Broadley <bill@xxxxxxxxxxxx>]

I recently realized that the LCD brightness used with the setpci command 
isn't 0-99, but instead 0-FF.

Strangely for every time I hit the dim/bright key the 
/etc/acpi/asus-brn-down/up.sh is called 3 times.  Alas the proper step 
(16) isn't divisible by 3.  Instead of messing with floating point I 
just made the value bounce off the upper/lower limits cleanly.

Is it expected that the up/down scripts would be called 3 times per 
keypress of Fn-f5 and Fn-f6?

I'm using the 2.6.34 PPA kernel and 
GRUB_CMDLINE_LINUX="acpi_backlight=vendor"

The new improved script should allow control over the full range of the 
LCD and be rather close to the scale shown by the brightness dialog:


#!/bin/bash
export SEED=6
if [ ! -f ~/.brightness ]; then
	echo 99 > ~/.brightness;
fi
export BRIGHTNESS=`cat ~/.brightness`
case "$1" in
        "up")
                export BRIGHTNESS=$[$BRIGHTNESS+$SEED];
        ;;
        "down")
                export BRIGHTNESS=$[$BRIGHTNESS-$SEED];
        ;;
        *)
                export BRIGHTNESS=1;
        ;;
esac
if [ "$BRIGHTNESS" -gt "255" ]; then
	export BRIGHTNESS=255;
fi
if [ "$BRIGHTNESS" -lt "0" ]; then
	export BRIGHTNESS=0;
fi
echo $BRIGHTNESS > ~/.brightness
export hexbright=`/usr/bin/printf "%X" $BRIGHTNESS`
sudo setpci -s 00:02.0 F4.B=$hexbright