[Sticky] [GUIDE] DSDT override eGPU error 12 fix  

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nu_ninja
(@nu_ninja)
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Joined: 11 months ago
Posts: 121
January 31, 2019 6:48 pm  

For a Mac, instead of using Clover you should try loading the DSDT override with the automate-eGPU EFI. Read the top post on that thread for more info.

Mid-2012 13" Macbook Pro (MacBookPro9,2) TB1 -> RX 460/560 (AKiTiO Node)
+ macOS 10.14.2+Win10
+ Linux Mint 19.1


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pasiamoon
(@pasiamoon)
Active Member
Joined: 2 months ago
Posts: 6
February 1, 2019 2:00 am  

@nu_ninja WOW thank you a lot for that tip!  Awesome, everything works now.

This post was modified 3 weeks ago

Macbook pro 2015 15" - Razer core X + ASUS GeForce GTX 1070 ROG Strix 8GB


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(@luca_parisi)
New Member
Joined: 1 week ago
Posts: 1
February 10, 2019 10:01 pm  

Hi, I'm trying using a GTX 750 Ti on a Lenovo T420 with the dock EXP GDC Beast.
The problem is: I can see the large memory only in test mode!! Test mode is very limited and I can't play lots of games. PLEASE, HELP ME!

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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OliverB
(@oliverb)
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Joined: 4 months ago
Posts: 609
February 16, 2019 12:14 am  
Posted by: veriestVarlet

Another potential Code 12 fix. For my uncooporative 2015 13" MBP, running "bcdedit.exe -set PCIEXPRESS FORCEDISABLE" (with the Graphics Card totally uninstalled) then installing the card fixed allocation (after a DSDT override.)

(Someone knowledgable should probably try this, discover pitfalls, explain why it works, all that.)

Hi @veriestvarlet! Could you please elaborate:  What exactly is "uncooperative" in the 2015 13"MBP? Thank you.

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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veriestVarlet
(@veriestvarlet)
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Joined: 2 years ago
Posts: 30
February 16, 2019 1:16 am  

Hey @OliverB, just that none of the other DSDT fixes would get the memory to show up in the right place and the device working properly. Only the forcedisable finally got the eGPU to show up and work (but after the first ding another dsdt override.) Otherwise it kept showing the error code 12 in the device manager. 

I don’t have the machine anymore but it did work with Sierra bootcamped into Windows 10 when last used.

Early 2015 13" MBP with Thunder2 RX 470 on Windows 10 and MacOS 10.1 (Formerly)

Lenovo Thinkpad X1 Tablet 3rd Gen and 2070 RTX Aorus Gaming Box (Custom)
Web development, Video Editing, 2D + 3D animation


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OliverB
(@oliverb)
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Posts: 609
February 16, 2019 1:32 am  
Posted by: veriestVarlet

Hey @OliverB, just that none of the other DSDT fixes would get the memory to show up in the right place and the device working properly. Only the forcedisable finally got the eGPU to show up and work (but after the first ding another dsdt override.) Otherwise it kept showing the error code 12 in the device manager. 

I don’t have the machine anymore but it did work with Sierra bootcamped into Windows 10 when last used.

Hi @veriestvarlet, This is strange. You have the Early 2015 MBP 13-inch, don't you? Because I have exactly this model and I never get Error 12. How is this possible?

(I am mostly using Bootcamp on this machine and never needed any fix like DSDT Override at all)

This post was modified 4 days ago

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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veriestVarlet
(@veriestvarlet)
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Joined: 2 years ago
Posts: 30
February 16, 2019 12:08 pm  

I don’t have them anymore no, sold and replaced with a TB3 setup. 

If you didn’t need the fix great! It might have been the card (RX 470) or enclosure (Node) I was using. Every setup is different. Even my current Gigabyte card to Gigabyte enclosure setup needed a patch so compatibility isn’t predictable.

Early 2015 13" MBP with Thunder2 RX 470 on Windows 10 and MacOS 10.1 (Formerly)

Lenovo Thinkpad X1 Tablet 3rd Gen and 2070 RTX Aorus Gaming Box (Custom)
Web development, Video Editing, 2D + 3D animation


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OliverB
(@oliverb)
Honorable Member
Joined: 4 months ago
Posts: 609
February 16, 2019 2:27 pm  
Posted by: veriestVarlet

I don’t have them anymore no, sold and replaced with a TB3 setup. 

If you didn’t need the fix great! It might have been the card (RX 470) or enclosure (Node) I was using. Every setup is different. Even my current Gigabyte card to Gigabyte enclosure setup needed a patch so compatibility isn’t predictable.

It's unlikely that it's the GPU or the enclosure, because they behave all the same in this matter and I tried quite a large number of different ones. At this moment I am running a RX 570 which doesn't make any trouble at all.

On theory of mine is that Windows has been improved in this matter since then. @itsage, what do you think?

This post was modified 5 hours ago

2018 15" MBP & 2015 13" MBP connected to RTX2080Ti GTX1080Ti GTX1080 Vega56 RX580 R9-290 GTX680


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elpadron
(@elpadron)
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Joined: 3 days ago
Posts: 1
February 17, 2019 12:12 am  

Hi Guys can anyone help me, i have a Acer Aspire 7750G with a i7 2670QM and 16GB RAM. eGPU is RX 580 connected with exp gdc beast v8.0, im getting the error code 12 so i decided to follow the instructions on the first page, but i am stuck at the Step iv. (using Intel method) i want to create the file named "dsdt-modified.dsl" but i get this error:

Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. Alle Rechte vorbehalten.

C:\Windows\system32>c: & cd \dsdt

C:\dsdt>iasl -ve dsdt-modified.dsl

Intel ACPI Component Architecture
ASL+ Optimizing Compiler version 20161222-32
Copyright (c) 2000 - 2016 Intel Corporation

dsdt-modified.dsl 7977: (Local0 + 0x02)
Error 6114 - ^ Result is not used, operator
has no effect

ASL Input: dsdt-modified.dsl - 10094 lines, 366868 bytes, 3835 keywords

Compilation complete. 1 Errors, 7 Warnings, 10 Remarks, 308 Optimizations

C:\dsdt>

CAN SOMEONE PLS HELP ? 

Acer Aspire 7750G i7-2670QM 16GB RAM | eGPU Amd Raedon RX580 Sapphire Nitro+ | Exp Gdc Beast v8.0


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