[Solved] High CPU Frequency after wake from sleep

[CodeDJ]

Hi, all functions of my hackintosh are working fine except for high cpu frequency post wake from sleep. Before sleep, the CPU temp is around 35c and the frequency fluctuates between 0.8GHz and 3GHz on an i5 3.5GHz cpu. Post wakeup the temp is around 41c and the frequency remains at around 3.8GHz and stays there. The highest item in activity monitor is kernel_task.

Attached is the before and after screenshot of Intel Power Gadget showing the difference.

Motherboard: z97x ud7 th
CPU is i5 4690k (I think)

Thanks!

 

[CodeDJ]

I did not have an ssdt file in clover. Followed the tonymac guide to generate an ssdt file and placed it under patched folder. After reboot, when I opened the Intel Power Gadget, it showed the frequency at around 3.5 GHz which is what my CPU has, but after sleep, it still jumped to 3.9 GHz with a lot higher power usage, temperature.

https://www.tonymacx86.com/threads/quick-guide-to-generate-a-ssdt-for-cpu-power-management.177456/

 

[BreBo]

@CodeDJ, please update your profile (personal details) with your Motherboard or Make/Model, CPU and Graphics Card.

Profiles need to contain at least your primary system to assist others with helping you.

 

[CodeDJ]

Sorry, didn't realize that. Updated.

 

[CodeDJ]

I didn't navigate to the last page of the previous SSDT link. It links to a new page see link below. Will try and post an update. May be I should post these screenshots there.

https://www.tonymacx86.com/threads/macos-native-cpu-igpu-power-management.222982/

 

[CodeDJ]

Resolved!

The Power Management on my machine was not working. Thanks to toleda I was able to fix it - see the following link:
https://www.tonymacx86.com/threads/macos-native-cpu-igpu-power-management.222982/

Even with PM fixed, I continued to have high CPU after wake due to kernel_task. I was able to fix it by disabling the following items in BIOS - don't know which one fixed it - will have to try process of elimination to figure that out:

Changed XHCI from Smart Auto to Auto
Disabled VT-D - I used to have it disabled, but having it enabled didn't have an impact so had left it as default.
Disabled Wake On Lan - Even though this is disabled under Energy Saver, I disabled it in the BIOS.
Disabled Thunderbolt.

Not sure how to mark this post as resolved.