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Level 1

23 points

MBP UEFI WINDOWS SOUND FIXED!!!!

If anyone is still interested I have found the solution for audio on MBP 2011 Windows 10 UEFI installs - it has taken me 4 years to figure out. I was given the answer from a tutorial only adjacently related -here:

https://egpu.io/forums/pc-setup/fix-dsdt-override-to-correct-error-12/

essentially what we knew was that windows didn't 'see' the correct audio devices when booted in pure efi-

The part that was frustrating to me was that many users like myself have lots of UEFI installs on their 2011 MBP and those OS's have no problem 'seeing' the HD audio controller -

So what was windows doing different?

I had messed around with mm commands in a UEFI shell (The shell provided in the rEFIt package) to no avail*

I had tried to pass SETPCI commands from grub into Windows 10- no luck*

A quote from the link above got my brain spinning

"A Windows system's DSDT table root bridge definition (ACPI PNP0A08 or PNP0A03) is usually confined to a reserved 32-bit space (under 4GB) budgeted to be large enough to host the notebook's PCIe devices. A watermark TOLUD value is then set and locked in the system firmware. Windows OS honors the root bridge definition and will allocate PCIe devices within it. macOS ignores the root bridge constraints as too does Linux when booted with the 'pci=noCRS' parameter. Neither of those OS require a DSDT override and can allocate freely in the huge 64-bit PCIe address space"

So Windows 'honors' the root bridge and OSX and linux disregard it --hmmm interesting.

As someone who also deals in hackintoshes I am very aware of DSDT's and how editing them can help get OSX running on home brew PC hardware- I had played around with installing Clover (the UEFI bootloader almost synonymous with Hackintoshes) on USB thumb drives and putting the DSDT from my MBP 2011 in the /Clover/ACPI/Windows folder - still nothing-- I thought that pointing windows to a DSDT would be enough.......

A side note is that there are people who have 'bricked' their real Macs when using clover, I have never had that issue personally (a sub-link in the link above describes such a situation)*

If you follow the guide and make a modified DSDT (one that add 'qwords' to the dwords section) you can test it in two ways-

I used Maciasl to extract and edit my DSDT to add a 'Qword' section - I placed the DSDT in two locations /EFI/Clover/ACPI/Patched [not sure if that one matters] & /EFI/Clover/ACPI/Windows

holding ALT/option during bootup I selected "EFI Boot" from the USB clover and booted into Clover

for the exact Clover configuration send me a message

After booting into windows the sound card was immediately working (this was because I had installed the cirrus logic drivers from bootcamp 4) - the display audio driver in device manager had an exclamation point but I was able to install the display audio driver from intel's driver support for the i7 2470m CPU in this machine-

I also looked at device manager via 'by resources' and saw that a new entry 'Large memory with an address range appeared

And low and behold the address range for the 'large memory section' contained the range for the hd audio controller

I then wanted to see if the method described in the initial link posted above where you force that memory map into the registry and turn on 'test signing' worked --

it did, which allowed me to boot directly into windows without the help of clover --

*NOTE: when I tested the registry method I skipped the first few steps since I already had a modified DSDT- I did need to create the 'C:\dsdt folder and extract the windows binaries to that folder - but I did not use their acpi dump nor compiler (I check for errors and compiled my dsdt in Maciasl in OSX)

I would gladly go more in depth but I doubt there are many more who need this information- just glad to have figured it out without the BIOS emulation of bootcamp- going to test this method on other 'pre 2013' Macs with non complient UEFI bios'

MacBook Pro

Posted on Feb 3, 2019 11:57 AM

305 replies

itayemi

Level 1

4 points

Sep 12, 2019 4:03 AM in response to TGIK

Hi TGIK,

I am trying to do this on a MacBook Pro (Late 2011). I don't mind taking this offline if necessary if others are not interested in the details.

I have already installed Windows 8.1 with EFIboot on the MAC

I have extracted ("Save As") the DSDT using MaciASL. My intention is to use the Windows registry option without having to install any third party bootloader such as rEFIt or Clover - I assume this is possible? If yes, exactly what do I need to do now?

What modifications do I need to do to the DSDT and then what do I need to do in Windows. Basically I need a guide.

I don't mind having some sort of conference (Webex/Zoom etc) for you to put me through.

Thank you.

TGIK Author

Level 1

23 points

Sep 12, 2019 9:51 AM in response to itayemi

Everything is actually explained in my first post but it is an advanced technique that probably requires a prerequisite 'hacking skill set' so I will walk you through it -- my email is tacogenius@gmail.com --- perhaps we can do it over the phone --- I am making a video of the process but that likely is not going to get done until Monday

itayemi

Level 1

4 points

Sep 12, 2019 5:38 PM in response to TGIK

@TGIK - I thought I might as well give it a try after I posted my last message. To make things interesting, I am doing this remotely on a MAC (belong to a cousin) on which I had installed RealVNC server :-)

Thanks, I got audio to work. I was going to post my procedure (approx 5,800 xters) here but it appears the limit for a single post is 5,000 characters, thus giving me the opportunity for some shameless self-advertisement. I have put it on my website instead:

http://www.itayemi.com/blog/2019/09/12/dual-booting-mac-osx-and-windows-on-macbookpro/

If necessary, I can break it up into 2 messages and post the whole thing here as well.

Thanks again!

Sep 16, 2019 7:41 AM in response to Loner T

Thanks for letting me know but I know already LOL. If I can get TGIK's method to work then I can dual boot only in EFI which that matters to me, because I'm tired of dealing with the Hybrid MBR bull **** that apple came out with back in the day as a band aid. Now its 2019 lets ask apple if they can come out with a firmware update for the bootloader of the machines, wait hang on.... nope they won't do that because its "Unsupported" so lets finish the job that Apple failed to do. I don't believe in spending 2k in a computer that has T2 chip and (Secure boot) which to me is useless and a pain in my ***. I have a MacBook Pro that works perfectly and still handles my video editing projects as of today LOL. Handles Windows 10 1903 just fine, Linux Mint, and Android believe it or not.

Loner T

Level 9

59,477 points

Sep 16, 2019 8:10 AM in response to xAndrewH1993x

xAndrewH1993x wrote:

Now its 2019 lets ask apple if they can come out with a firmware update for the bootloader of the machines, wait hang on.... nope they won't do that because its "Unsupported" so lets finish the job that Apple failed to do.

👏👍

Sep 16, 2019 9:24 AM in response to TGIK

Yeah it would get to the Windows Logo on boot and then hang black screen restart over and over. After patching the file and following the instructions as closely as I could it didn't work. I used the Intel method instead of the Microsoft Method. Test-mode was enabled right before reboot and then it bootlooped over and over.

itayemi

Level 1

4 points

Sep 16, 2019 3:02 PM in response to xAndrewH1993x

I assumed you changed the partition scheme from Hybrid GPT/MBR to GTP with protected MBR using gdisk right?

You may want to take a look the documentation I made of my installing Windows 8.1 based on @TGIK's explanation.

http://www.itayemi.com/blog/2019/09/12/dual-booting-mac-osx-and-windows-on-macbookpro/

To be clear, you managed to install it using EFIBoot, booted successfully into Windows 10, then used the registry DSDT override to load your modified DSDT?

If you are interested we can have some sort of conference session to look at it together e.g., over RealVNC or Webex/Zoom.

itayemi

Level 1

4 points

Sep 16, 2019 11:55 PM in response to xAndrewH1993x

Sounds like your setup is correct and should work. My timezone is MST. Drop me a line at itababapch @ gmail .com and we can work out a time for the zoom/Webex session. I am more curious than skilled but we should be able to figure it out together :-)

Sep 18, 2019 7:29 PM in response to TGIK

Hey TGIK & itayemi quick question do you guys know Batch file scripting or Python Shell scripting? If not do you have any friends that are able to help me? I'm trying to build a installer or patch installer for windows.

TGIK Author

Level 1

23 points

Sep 20, 2019 11:18 AM in response to xAndrewH1993x

I got some homies who might be able to help on the front -- will let you know sir -- glad you got it working --- on the video I show people how to make custom booter partitions to trick apples firmware --

TGIK Author

Level 1

23 points

Oct 6, 2019 5:07 PM in response to Mr_DKB

I honestly have been trying to make a video for the last couple weeks but it is hard to find the several hours needed to shoot, process the audio and then edit - then upload --- I was doing it alone with a camera on a tripod -had three hours of footage -- then didn't like the slight 'out-of-focus' footage I got --yes -even for instructional videos I am pretty **** self critical --- maybe this week..............what do you mean you can't understand anything? Have you installed Windows 10 (or any windows for that matter) before?

If you have Windows installed already -- you are really close -- this 'mod' is not very difficult ---where are you in the process?

Oct 14, 2019 4:14 AM in response to TGIK

Hey TGIK for last several weeks I've been going hard core into this project and bumped into a major road block that will take time to debunk. I've made a automatic script so far that will install the files in the proper location but when using batch files to launch the asl.exe and bcdedit.exe I keep getting blocked by Windows stupid UAC (Secure Desktop) Prompts. So now I have to learn how to make a batch file or vbs script that will run some kind of command line that will bypass the UAC to then install DSDT files and patch up the BCD file as previously mention back with you and itayemi. I thought I was so close to being done, but found out I just opened a whole another book. I'm going to keep trying.

Mr_DKB

Level 1

9 points

Oct 17, 2019 8:02 AM in response to TGIK

you have typed lots of explanations and i got confused

could you please just write step by step solution for me ???(in minute detail)

im struggling with this ......... issue for several weeks ....!!!

TNX :)))))))

Oct 17, 2019 10:28 AM in response to Mr_DKB

Hello Mr_DKB hope you are doing well, I have a automated Windows Script that will help you with your issue. Please be patient in the next week or two as I'm finalizing it for beta release. This will already have the patched DSDT file that you need and all the commands automated for you. Please note that this will work best on Windows 10 version 1903. If you have not updated your version of Windows, I would recommend getting it updated as there will be a side along fix for the BSOD issue with Windows 10.

TGIK Author

Level 1

23 points

Oct 17, 2019 10:33 AM in response to Mr_DKB

Where are you in the process? Have you installed windows yet? That is the first step-

To do a UEFI install the disk has to be a GPT formatted disk not a GPT/MBR hybrid. I put all the information that is needed in many of these posts -- I will try to help you out--- I have provided my personal email in this forum ----I am trying to make a video but I do not really have the time unfortunately -- I have already had a client send me their computer --- I can do that for my normal IT rate but I really cannot write a step by step tutorial at the moment --- I can walk you through parts it -- I am sorry but this is a fairly advanced tutorial that requires some prerequisite knowledge of bootloaders, partition schemes, DSDT editing etc....I will try to help you

MBP UEFI WINDOWS SOUND FIXED!!!!