#!/bin/bash
# This script should contain the command(s) necessary to switch on the
# nVidia card on Asus K42Jc, K52Jc, N53Jf, N53Jg, N71Jv, N73Jf, P52Jc,
# PL80Jt, U30Jc, U33Jc, U35Jc, U36Jc and UL80Jt.
#
# Please note that the acpi_call module is need for these operations:
# http://linux-hybrid-graphics.blogspot.com/2010/07/using-acpicall-module-to-switch-onoff.html

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

acpi_call () {
    echo "$*" > /proc/acpi/call
    result=$(cat /proc/acpi/call)
    case "$result" in
     Error*)
      echo "Enabling nVidia card failed ($result)."
      ;;
     *)
      echo "Enabling nVidia card succeeded."
     ;;
    esac
}

echo DON $(acpi_call "\_SB.PCI0.P0P2.DGPU._ON")

modprobe nvidia-current