#!/bin/bash

if lsmod | grep -q acpi_call; then
methods="
\_SB.PCI0.P0P1.VGA._OFF
\_SB.PCI0.P0P2.VGA._OFF
\_SB_.PCI0.OVGA.ATPX
\_SB_.PCI0.OVGA.XTPX
\_SB.PCI0.P0P3.PEGP._OFF
\_SB.PCI0.P0P2.PEGP._OFF
\_SB.PCI0.P0P1.PEGP._OFF
\_SB.PCI0.MXR0.MXM0._OFF
\_SB.PCI0.PEG1.GFX0._OFF
\_SB.PCI0.PEG0.GFX0.DOFF
\_SB.PCI0.PEG1.GFX0.DOFF
\_SB.PCI0.PEG0.PEGP._OFF
\_SB.PCI0.XVR0.Z01I.DGOF
\_SB.PCI0.PEGR.GFX0._OFF
\_SB.PCI0.PEG.VID._OFF
\_SB.PCI0.PEG0.VID._OFF
\_SB.PCI0.P0P2.DGPU._OFF
\_SB.PCI0.P0P4.DGPU.DOFF
\_SB.PCI0.IXVE.IGPU.DGOF
\_SB.PCI0.RP00.VGA._PS3
\_SB.PCI0.RP00.VGA.P3MO
\_SB.PCI0.GFX0.DSM._T_0
\_SB.PCI0.LPC.EC.PUBS._OFF
\_SB.PCI0.P0P2.NVID._OFF
\_SB.PCI0.P0P2.VGA.PX02
\_SB_.PCI0.PEGP.DGFX._OFF
\_SB_.PCI0.VGA.PX02
\_SB.PCI0.PEG0.PEGP.SGOF
\_SB.PCI0.AGP.VGA.PX02
"

for m in $methods; do
    echo -n "Trying $m: "
    echo $m > /proc/acpi/call
    result=$(cat /proc/acpi/call)
    case "$result" in
        Error*)
            echo "failed"
        ;;
        *)
            echo "works!"
            # break # try out outher methods too
        ;;
    esac
done

else
    echo "The acpi_call module is not loaded, try running 'modprobe acpi_call' or 'insmod acpi_call.ko' as root"
    exit 1
fi