#!/bin/bash

modprobe acpi_call

if ! lsmod | grep -q acpi_call; then
    echo "Error: acpi_call module not loaded"
    exit
fi

acpi_call () {
    echo "$*" > /proc/acpi/call
    cat /proc/acpi/call
}

echo ON $(acpi_call "\_SB.PCI0.PEG.VID._ON")
echo _PS0 $(acpi_call "\_SB.PCI0.PEG.VID._PS0")
modprobe nvidia-current