#!/bin/bash
NUM2=`cat /sys/class/backlight/intel_backlight/brightness`
if [ 'up' = $1 ]; then
NUM2=`expr $NUM2 \+ 50`
else
NUM2=`expr $NUM2 \- 50`
fi
echo $NUM2 > /sys/class/backlight/intel_backlight/brightness
use with up or dn parameter to control brightness until resolved
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https://bugs.launchpad.net/bugs/1105604
Title:
Brightness control stopped working
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https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1105604/+subscriptions
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