switch_off_radeon

#!/bin/bash
#
# see http://mschoofs.blogspot.ch/2012/07/switch-off-ati-vga-in-hybrid-cards-with.html

help() {
  echo 'usage: switch_off_radeon'
  echo
  echo '    tries to switch off the heat producing Radeon VGA card'
  echo
  exit 1
}

[ "$1" == "--help" ] && help

sudo sh -c "echo OFF > /sys/kernel/debug/vgaswitcheroo/switch"
if lspci -vnnn | grep VGA | grep "Advanced Micro Devices" | grep -q "prog-if ff"; then
  echo "successfull switched off Radeon"
else
  echo "failed to switch off Radeon"
  exit 1
fi