Comment 816 for bug 752542

Laptop MSI GS70 6QE, https://www.msi.com/Laptop/support/GS70-6QE-Stealth-Pro.html.

$ grep CPU /proc/cpuinfo | head -1
model name : Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
$ lspci | grep -E -i 'vga|nvidia'
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
01:00.0 3D controller: NVIDIA Corporation GM204M [GeForce GTX 970M] (rev a1)
$ lshw | grep -A4 BIOS
          description: BIOS
          vendor: American Megatrends Inc.
          physical id: 1
          version: E1775IMS.10E
          date: 12/02/2015
$

It always produces the following warnings during startup

ACPI Warning: \_SB.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20160831/nsarguments-95)
ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20160831/nsarguments-95)
ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20160831/nsarguments-95)

for all the kernel versions I have used/tested

4.8.15-300.fc25.x86_64
4.9.0+
4.9.0-rc4+
4.9.0-rc5+
4.9.0-rc8+
4.9.11-200.fc25.x86_64
4.9.13-200.fc25.x86_64
4.9.13-201.fc25.x86_64
4.9.14
4.9.14-200.fc25.x86_64
4.9.5-200.fc25.x86_64
4.9.6-200.fc25.x86_64
4.9.8-201.fc25.x86_64
4.9.9-200.fc25.x86_64
4.10.0-rc5+
4.10.5-200.fc25.x86_64
4.10.6-200.fc25.x86_64

The "examples/turn_off_gpu.sh" script (previously test_off.sh) from https://github.com/mkottman/acpi_call returns "failed" for all cases, but the kernel logs "kernel: acpi_call: Cannot get handle: Error: AE_NOT_FOUND" for all cases, so probably the acpi_call kernel module is outdated (not updated since 2013).