Here's what the old script did, for reference in implementing the gnome-
power-manager fix.
BRIGHTNESS=$(cat /sys/class/backlight/sony/brightness)
if [ "$BRIGHTNESS" -gt 7 ]; then
BRIGHTNESS=0
fi
if [ "x$1" = "xdown" ]; then
if [ "x$BRIGHTNESS" != "x0" ]; then
BRIGHTNESS=$(( $BRIGHTNESS - 1 ))
echo $BRIGHTNESS > /sys/class/backlight/sony/brightness
else
[ -x /usr/bin/spicctrl ] && /usr/bin/spicctrl -b 0
fi
# Recent nvidia Sonys have ACPI methods that do nothing. Thanks, Sony.
[ -x /usr/bin/smartdimmer ] && smartdimmer -d 2>/dev/null
elif [ "x$1" = "xup" ]; then
if [ "x$BRIGHTNESS" != "x7" ]; then
BRIGHTNESS=$(( $BRIGHTNESS + 1 ))
echo $BRIGHTNESS > /sys/class/backlight/sony/brightness
fi
[ -x /usr/bin/smartdimmer ] && smartdimmer -i 2>/dev/null
else
echo >&2 Unknown argument $1
fi
--
fn keys for backlight (brighness) not working : geforce 8 card on sony vaio
https://bugs.launchpad.net/bugs/345531
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