ACPI errors on Dell Precision 7730

[Jake Strieter]

Hello, 

I was wondering if someone could help me resolve some ACPI errors I get
on my laptop under FreeBSD 12 RELEASE. The main ones I notice on boot
are: 

"Firmware Error (ACPI): Failure creating..." and 

"ACPI Error: AE_ALREADY_EXISTS" 

Suspend won't work. All the fn keys don't work either so I can't change
the screen brightness anytime after the BSD loader. Lid close does
nothing and for some reason power management in Plasma 5 shows two
batteries when, to knowledge I only have one. I have Gentoo and Windows
10 on separate drives and they're both fully functional aside from
Bluetooth in Gentoo. I have observed when booting from an Ubuntu live
USB that there were some "ACPI Error: AE_ALREADY_EXISTS" errors but once
Gnome loads everything works. 

This machine came preinstalled with Ubuntu 16.04 although it's Dell's
own image with some extra firmware and drivers. I've linked my ACPI
dump, dmesg -v, etc. as well as the disassembled DSDT I extracted under
Windows.  Maybe there's other system information I can gather under
Windows or Linux. In the meantime I'm not sure what to look for in
comparison to Linux's implementation of ACPI-CA. This is my first time
on FreeBSD and I like it quite a bit more than Linux so it'd be nice if
it could be my daily driver. 

ASL: https://gist.github.com/jstrieter/b330d48e68dfb42a6a4aaa1e4ef2fb55 

dmesg -v:
https://gist.github.com/jstrieter/dd9d9f0b1c9575bff0479b3db3526c2b 

sysctl hw.acpi:
https://gist.github.com/jstrieter/1cb962b1c0eaa243edb749783ab32df8 

DSDT from Windows:
https://gist.github.com/jstrieter/1a3a2017379cff3d525be759b5923193 

Let me know If I can provide any thing else. Thanks! 

Jake