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[Guide] Disabling discrete graphics in dual-GPU laptops

Joined
Nov 20, 2011
Messages
27
Motherboard
Dell Precision M4800 (Clover)
CPU
i7-4800mq / Chipset QM87
Graphics
nVidia Quadro K1100m 2GB
Mobile Phone
  1. iOS
Which bootloader?

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System: manufacturer/model + bootloader(Clover/Chameleon/Chimera)
CPU: detailed CPU model + motherboard chipset
Graphics: all graphics devices + laptop internal screen resolution

For example, typical Ivy laptop:
System: HP ProBook 4540s (Clover)
CPU: i5-3320m/HM76
Graphics: HD4000, 1366x768

Use CPU-Z on Windows to find CPU (Core iX-xxx) and motherboard chipset (HMxx), and graphics capabilities. For a laptop, these details are important and affect critical installation procedures.

My detailed informations have been added. Now I usualy use Clover bootloader, but Chameleon can be also.
Could you chceck this DSDT.aml? It is for similar laptop as I own, but I have it downloaded from web. I can boot OSX with it using nVidia Card, but often times I got kernel panic. There is much of bugs I think. So my goal is prepare my own DSDT.aml with correct patching and also with disabling nVidia graphic card.
 

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  • DSDT.zip
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RehabMan

Moderator
Joined
May 3, 2012
Messages
188,161
Motherboard
Intel DH67BL
CPU
i7-2600K
Graphics
HD 3000
Mac
  1. MacBook Air
Mobile Phone
  1. iOS
My detailed informations have been added. Now I usualy use Clover bootloader, but Chameleon can be also.
Could you chceck this DSDT.aml? It is for similar laptop as I own, but I have it downloaded from web. I can boot OSX with it using nVidia Card, but often times I got kernel panic. There is much of bugs I think. So my goal is prepare my own DSDT.aml with correct patching and also with disabling nVidia graphic card.

Never a good idea to use a DSDT from another computer.

Read guide for patching your own: http://www.tonymacx86.com/yosemite-laptop-support/152573-guide-patching-laptop-dsdt-ssdts.html
 
Joined
Nov 20, 2011
Messages
27
Motherboard
Dell Precision M4800 (Clover)
CPU
i7-4800mq / Chipset QM87
Graphics
nVidia Quadro K1100m 2GB
Mobile Phone
  1. iOS
Never a good idea to use a DSDT from another computer.

Read guide for patching your own: http://www.tonymacx86.com/yosemite-laptop-support/152573-guide-patching-laptop-dsdt-ssdts.html



I read this guide many times. I extracted ACPI tables using F4 Clover method and used some patched. But my system won´t boot with my new DSDT.aml and SSDT.aml.
When I try to boot with nVidia card, I got black screen after 5 second of booting, because I turned OFF this card in SSDT.
When I try to boot with Intel HD3000 card, I still got Kernel Panic and I don´t know, where is problem.

These are my extracted and prepared ACPI tables.
 

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  • m4600.zip
    36.4 KB · Views: 86

RehabMan

Moderator
Joined
May 3, 2012
Messages
188,161
Motherboard
Intel DH67BL
CPU
i7-2600K
Graphics
HD 3000
Mac
  1. MacBook Air
Mobile Phone
  1. iOS
I read this guide many times. I extracted ACPI tables using F4 Clover method and used some patched. But my system won´t boot with my new DSDT.aml and SSDT.aml.
When I try to boot with nVidia card, I got black screen after 5 second of booting, because I turned OFF this card in SSDT.
When I try to boot with Intel HD3000 card, I still got Kernel Panic and I don´t know, where is problem.

These are my extracted and prepared ACPI tables.

Open a separate thread. Basics of Yosemite installation are off-topic here.
 
Joined
Nov 20, 2011
Messages
27
Motherboard
Dell Precision M4800 (Clover)
CPU
i7-4800mq / Chipset QM87
Graphics
nVidia Quadro K1100m 2GB
Mobile Phone
  1. iOS
Open a separate thread. Basics of Yosemite installation are off-topic here.

I finaly can boot with Clover using Intel HD3000, but without DSDT.am!!!. Only SSDT for disabling nVidia and SSDT for CPU Pm are loaded in ACPI->Patched.

There are files of "Problems reporting"

com.apple.driver.AppleACPIPlatform (3.1) <12 11 7 6 5 4 3 1>

com.apple.driver.AppleIntelCPUPowerManagement (218.0.0) <7 6 5 4 3 1>
 

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  • m4600.ioreg.zip
    360.8 KB · Views: 99
  • RehabMan.zip
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RehabMan

Moderator
Joined
May 3, 2012
Messages
188,161
Motherboard
Intel DH67BL
CPU
i7-2600K
Graphics
HD 3000
Mac
  1. MacBook Air
Mobile Phone
  1. iOS
I finaly can boot with Clover using Intel HD3000, but without DSDT.am!!!. Only SSDT for disabling nVidia and SSDT for CPU Pm are loaded in ACPI->Patched.

There are files of "Problems reporting"

com.apple.driver.AppleACPIPlatform (3.1) <12 11 7 6 5 4 3 1>

com.apple.driver.AppleIntelCPUPowerManagement (218.0.0) <7 6 5 4 3 1>

I don't see a problem. The discrete card is disabled.
 
Joined
Nov 20, 2011
Messages
27
Motherboard
Dell Precision M4800 (Clover)
CPU
i7-4800mq / Chipset QM87
Graphics
nVidia Quadro K1100m 2GB
Mobile Phone
  1. iOS
I don't see a problem. The discrete card is disabled.

Yes, it is disabled. RehabMan, I realy thank you for your guides and tips.
Now, I'm going to patching DSDT to audio work, but for this, there are other topics.
 
Joined
May 13, 2015
Messages
365
Motherboard
Acer Aspire 5750G + Clover Legacy
CPU
Intel Core i3-2310M/HM65
Graphics
HD3000, 1366x768 + NVIDIA® GeForce® GT 520M
Mobile Phone
  1. Android
I extracted my ACPI tables with linux. and i dont have SSDT-0 and SSDT-12...
 
Joined
May 13, 2015
Messages
365
Motherboard
Acer Aspire 5750G + Clover Legacy
CPU
Intel Core i3-2310M/HM65
Graphics
HD3000, 1366x768 + NVIDIA® GeForce® GT 520M
Mobile Phone
  1. Android
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