#!/bin/bash

# lsmod | grep '^nouveau ' >/dev/null && modprobe -rf nouveau &>/dev/null

# Trying bbswitch method
if [ -f /proc/acpi/bbswitch ]; then
	echo 'ON' > /proc/acpi/bbswitch
	a=`cat /proc/acpi/bbswitch`
	[ ON == ${a##* } ] && echo "nVidia chip powered ON using bbswitch" && exit 0

	echo "Cann't power on nVidia chip using bbswitch"
	exit -1
fi

# Trying acpi_call method
if [ -f /proc/acpi/call ]; then
	model=`dmidecode -s system-product-name`
	case "$model" in
		M11XR2)
			echo '\_SB.PCI0.P0P2.PEGP._PS0' > /proc/acpi/call
		;;
		1015PN)
			echo '\_SB.PCI0.P0P4.DGPU.DON' > /proc/acpi/call
		;;
		1215N)
			echo '\_SB.PCI0.P0P4.GFX0._PS0' > /proc/acpi/call
		;;
		K42Jc|K52Jc|N53Jf|N53Jg|N71Jv|N73Jf|P52Jc|PL80Jt|U30Jc|U33Jc|U35Jc|U36Jc|UL80Jt)
			echo '\_SB.PCI0.PEG1.GFX0.DON' > /proc/acpi/call
		;;
		N53Sn|U41Sv|N53Sv)
			echo '\_SB.PCI0.PEG0.GFX0.DON' > /proc/acpi/call
		;;
		N61Jv|N73Sv)
			echo '\_SB.PCI0.PEGR.GFX0.DON' > /proc/acpi/call
		;;
		P31Jg)
			echo '\_SB.PCI0.PEG1.GFX0._PS0' > /proc/acpi/call
		;;
		U43Jc)
			echo '\_SB.PCI0.RP00.VGA._PS0' > /proc/acpi/call
		;;
		UL30Vt)
			echo '\_SB.PCI0.P0P1.VGA._ON' > /proc/acpi/call
		;;
		E6420)
			echo '\_SB.PCI0.PEG0.VID._ON' > /proc/acpi/call
		;;
		InspironN5110|XPSL702X)
			echo '\_SB.PCI0.PEG0.PEGP._PS0' > /proc/acpi/call
		;;
		Vostro3300|Vostro3500)
			echo '\_SB.PCI0.P0P1.PEGP._ON' > /proc/acpi/call
		;;
		XPS15)
			echo '\_SB.PCI0.PEG0.PEGP._ON' > /proc/acpi/call
		;;
		ThinkPadT410)
			echo '\_SB.PCI0.PEG.VID._ON' > /proc/acpi/call \
			&& echo '\_SB.PCI0.PEG.VID._PS0' > /proc/acpi/call
		;;
		ThinkPadT420|41786VU)
			echo '\_SB.PCI0.PEG.VID._PS0' > /proc/acpi/call
		;;
		*) echo "Snail (acpi_call method): unknown Notebook model: $model"; exit -1
		;;
	esac

	echo "acpi_call used to power ON nVidia chip"
	exit 0
fi

# Trying vgaswitcheroo method
if [ -f /sys/kernel/debug/vgaswitcheroo/switch ]; then
	echo 'ON' > /sys/kernel/debug/vgaswitcheroo/switch \
	&& echo "nVidia chip powered ON using vgaswitcheroo" \
	&& exit 0

	echo "Cann't power on nVidia chip using vgaswitcheroo"
	exit -1
fi