[Guide] Disabling discrete graphics in dual-GPU laptops

[playashu]

_INI method is in SSDT-6 and _OFF method is in DSDT-8
GPU still getting listed under Display/Graphics in System Information

 

[RehabMan]

_INI method is in SSDT-6 and _OFF method is in DSDT-8
GPU still getting listed under Display/Graphics in System Information

Read post #1, "Problem Reporting".

 

[simpleindays]

Hi, Rehabman. It failed to disable the discrete graphic on my laptop since the os updated from 10.12.1 to 10.12.4. The dsdt and ssdts which I used worked well before. But now the AMDSupport.kext is loaded in Extensions showed in System Info. It makes my laptop very hot. Please help me disable the discrete graphic to make my laptop cool down.
Thanks.

 

[RehabMan]

Hi, Rehabman. It failed to disable the discrete graphic on my laptop since the os updated from 10.12.1 to 10.12.4. The dsdt and ssdts which I used worked well before. But now the AMDSupport.kext is loaded in Extensions showed in System Info. It makes my laptop very hot. Please help me disable the discrete graphic to make my laptop cool down.
Thanks.

You forgot to press F4 to collect new ACPI/origin.
Please read post #1, "Problem Reporting" again. Carefully.

 

[simpleindays]

You forgot to press F4 to collect new ACPI/origin.
Please read post #1, "Problem Reporting" again. Carefully.

Ah, I found the DSDT and SSDT extracted by clover not available for my laptop. I don't know why. So I collected them by AIDA64 in Windows. I will upload them this time.

I have tried patch "Disable from _INI (SSDT)" and "Disable from _REG (DSDT)" in MaciASL, but it did not any change.

Thanks.

 

[RehabMan]

Ah, I found the DSDT and SSDT extracted by clover not available for my laptop.

No idea what you're referring to.
Your EFI/Clover has ACPI/origin files.
ACPI is not patched correctly.
Based on ACPI/origin you should have in ACPI/patched:
DSDT.aml
SSDT.aml (ssdtPRgen.sh)
SSDT-0.aml
SSDT-1.aml
SSDT-2.aml
SSDT-7.aml
SSDT-8.aml

 

[Jonesm]

Hello RehabMan. Really need your help on this. It's my sixth attempt to disable discreet card and enable brightness control, but every time I rename GFX0 to IGPU my computer fails to start (it hangs with an "Prohibited" symbol). Here are the files for problem solving. The patched.zip file contains my patched SSDT, since I had to remove them from Clover to be able to boot. Thanks in advance!

 

[RehabMan]

Hello RehabMan. Really need your help on this. It's my sixth attempt to disable discreet card and enable brightness control, but every time I rename GFX0 to IGPU my computer fails to start (it hangs with an "Prohibited" symbol). Here are the files for problem solving. The patched.zip file contains my patched SSDT, since I had to remove them from Clover to be able to boot. Thanks in advance!

You probably forgot to set DropOem=true and SortedOrder to specify SSDT load order.

 

[Jonesm]

You probably forgot to set DropOem=true and SortedOrder to specify SSDT load order.

No luck. DropOem was set to true. Tried different load orders, and it always stops with the "prohibited" symbol. When patching the SSDTs, I noticed some "x" SSDTs with references to GFX0, buti I simple ignored them because they wouldn't load from the patched folder.

 

[RehabMan]

No luck. DropOem was set to true. Tried different load orders, and it always stops with the "prohibited" symbol. When patching the SSDTs, I noticed some "x" SSDTs with references to GFX0, buti I simple ignored them because they wouldn't load from the patched folder.

No ideas without "Problem Reporting" files as per FAQ.
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/