nvidia-disabler.bash

#!/bin/bash

# Disable the nvidia card (Optimus) on Dell XPS 15z (and maybe other computers)
# Author: Nicolas Cognaux alias Gp2mv3 (nicolascognaux [at] gmail.com)
# Opensource code, you can do whatever you want with my code.

verbose=0

if [ $# -gt 0 ] && [ $1 = "-v" ]
then
    verbose=1
fi


if [ $verbose = 1 ]
then
    grep rate /proc/acpi/battery/BAT0/state
fi

modprobe acpi_call

echo "\_SB.PCI0.PEG0.PEGP._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x1A {0x1,0x0,0x0,0x3}" > /proc/acpi/call
echo "\_SB.PCI0.PEG0.PEGP._PS3" > /proc/acpi/call

if [ $verbose = 1 ]
then
    echo "Sleep 5 seconds to show the new rate"
    sleep 5
    echo "New rate: "
    grep rate /proc/acpi/battery/BAT0/state
fi