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FakeSMC Problem? CPUs run hotter, fans noiser, and kernel_task after 10.11


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I recently did a clean install of 10.11 on my Dell 435mt, which ran 10.8.5 just fine for several years. After jumping though the install hoops (mostly internal SATA problems with IOFamily.kext), and installing the bare minimum Kexts (FakeSMC)- I have a process in Activity Monitor called kernel_task that runs at ~100% constantly. CPU cores are at 66-67C, ambient is pushing 90C, fans running.

 

However, I booted back into my 10.8.5 clone- kernel_task runs at the 3-4% it should, all CPUs are at 49-51C.

 

How could I go about figuring out diagnosing this problem? I also tried 10.10- same issue. I assume this must be some kind of problem with the FakeSMC kext readout of MB sensors?

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I recently did a clean install of 10.11 on my Dell 435mt, which ran 10.8.5 just fine for several years. After jumping though the install hoops (mostly internal SATA problems with IOFamily.kext), and installing the bare minimum Kexts (FakeSMC)- I have a process in Activity Monitor called kernel_task that runs at ~100% constantly. CPU cores are at 66-67C, ambient is pushing 90C, fans running.

 

However, I booted back into my 10.8.5 clone- kernel_task runs at the 3-4% it should, all CPUs are at 49-51C.

 

How could I go about figuring out diagnosing this problem? I also tried 10.10- same issue. I assume this must be some kind of problem with the FakeSMC kext readout of MB sensors?

Is your Installation Image from the AppStore :)?
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Thanks for the help. Yes 1st gen 920 Core i7 (2.66ghz), X58, 1336. I tried installing the latest FakeSMC and modifying the SMBIOS- now kernel panic so I am trying a fresh re-install. The only extra kexts that I have installed are

 

FakeSMC (1394 - SDK 10.10)

AHCI_3rdParty_SATA (0.5)

AppleIntelIE100e (3.2.4)

IOATAFamily (2.5.1)

 

Just finished the reinstall and loading of kexts- still no go :( Might just have to purchase a new barebones system- using OEM hardware is troublesome.

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hello

 

sure is not a fakesmc problem .. if u have fakesmc problems .. u can´t boot .. boot verbose and post a photo from verbose boot

 

or a dmesg print from the boot ..

 

maybe from the extra kext installed

 

good hack

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No PS2 kexts. IOATAFamily.kext is what I needed to get the machine to recognize Internal SATA drives. Correct- there is no BIOS option for AHCI on the Dell

 

I do notice on verbose boot that it will not load AppleIntelPowerManagement kext due to AHCI or something- not sure that is related I will have to take a picture of the exact message once I get back from work.

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OK thank you for all of the help. I have found that on a fresh install, using FakeSMC AND AppleACPIPlatformRollback (10.9.5) will eliminate my kernel_task problems! However, once I install IOATAFamily.kext (I must do this as it is the only thing I have found which will recognize the internal SATA drives), I get this new problem below. It goes through the complete boot sequence, and then, nothing. Black screen. Tried GraphicsEnabler=Yes and GraphicsEnabler=No, and still nothing.

 

 

What about the combination of AppleACPIPlatformRollback and IOATAFamily.kext would affect the graphics in any way?

 

To be clear, due to my bios not supporting AHCI mode to install I must boot from USB installer and install to an external USB drive. I then boot from that drive using the USB installer (and rd=disk0s2), do all of the OSX setup, and install the kexts. It isn't until I install IOATAFamily.kext that I can get the machine to read any SATA devices at all.

 

This isn't my video btw, but it is an example of what is happening. It gets to the end of the normal verbose boot sequence, and then when it's ready to load, simply goes blank.

 

And one more thing- GFX card is a Nvidia GTX 660 2gb.

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