sony vaio - /etc/rc.local

rc.local

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
modprobe -r radeon

cpufreq-set -c 0 -g powersave
cpufreq-set -c 1 -g powersave
cpufreq-set -c 2 -g powersave
cpufreq-set -c 3 -g powersave

exit 0