[Guide] Disabling discrete graphics in dual-GPU laptops

[danielnguyen]

hi @RehabMan, i use GPU Nvidia Optimus on Hackintosh but Sleep/wake problem?, how to fix it ?, thank you

 

[RehabMan]

hi @RehabMan, i use GPU Nvidia Optimus on Hackintosh but Sleep/wake problem?, how to fix it ?, thank you

There is advice regarding sleep/wake problems in the FAQ.

http://www.tonymacx86.com/el-capita...faq-read-first-laptop-frequent-questions.html

 

[z1326]

You need to provide current files. Read post #1, "Problem Reporting".

This is the clover folder when auto shutdown happens.

 

[z1326]

And since the system will auto shutdown within short time it's hard to run ioreg and terminal when the AMD discrete graphics is disabled. So I run the ioreg and terminal with the AMD discrete graphics enabled instead.

ast login: Sat Sep 17 21:22:24 on console

Latitud450deMBP:~ Admin$ kextstat|grep -y acpiplat

13 2 0xffffff7f825ea000 0x60000 0x60000 com.apple.driver.AppleACPIPlatform (4.0) 295F7A91-2DF7-3FFE-9550-A0C1A6F9D575 <12 11 7 6 5 4 3 1>

Latitud450deMBP:~ Admin$ kextstat|grep -y appleintelcpu

Latitud450deMBP:~ Admin$

 

[z1326]

And according to the BIOS record the system get auto shut because the CPU has reached hot "T" but I used Intel Power Gadget to observe the power consumption and temperature and I found that when the auto shutdown happened the power consumption and temperature are normal. I think that's quite abnormal.

I found a SSDT aml file defines sensor hub or something like that. Is it possible that something is wrong with that SSDT?

 

[RehabMan]

This is the clover folder when auto shutdown happens.

Need all "Problem Reporting" files, not just the Clover folder. Please read carefully.

If you think the call to _OFF is causing the problem, verify by removing it. Also, as per guide, try _PS3 (if available).

 

[z1326]

Need all "Problem Reporting" files, not just the Clover folder. Please read carefully.

If you think the call to _OFF is causing the problem, verify by removing it. Also, as per guide, try _PS3 (if available).

If I remove _off then the auto shutdown stops.However the AMD discrete graphics cannot be disabled without _off.And I don't think _ps3 is available.

 

[z1326]

Need all "Problem Reporting" files, not just the Clover folder. Please read carefully.

If you think the call to _OFF is causing the problem, verify by removing it. Also, as per guide, try _PS3 (if available).

And the problem is,I think something is wrong with temperature sensor or cpu power management but I cannot find the exact reason.

 

[RehabMan]

If I remove _off then the auto shutdown stops.However the AMD discrete graphics cannot be disabled without _off.And I don't think _ps3 is available.

You should check for _PS3 ("I don't think" makes it sound as if you didn't check).

You should verify that _OFF (or _PS3, whichever you're using) is executing as you expect by tracing method entry and exit using ACPIDebug.kext. Also, make sure you're patched ACPI files are from a current extract. There were strange differences between ACPI/origin and ACPI/patched that cannot be explained by typical patches.

 

[z1326]

You should check for _PS3 ("I don't think" makes it sound as if you didn't check).

You should verify that _OFF (or _PS3, whichever you're using) is executing as you expect by tracing method entry and exit using ACPIDebug.kext. Also, make sure you're patched ACPI files are from a current extract. There were strange differences between ACPI/origin and ACPI/patched that cannot be explained by typical patches.

I didn't find _ps3 in ssdt-8 and dsdt-9(which are the two SSDTs related to discrete graphics ). And could you tell me if I find _ps3 in dsdt, how could I apply it?
BTW, I don't think it's about my patched dsdt and SSDTs because I get the same auto shutdown when I boot into Ubuntu 16.04 install disk. We all know that patched dsdt and SSDTs placed in clover folder cannot have any influence in Ubuntu install disk.