ACPI_SMC_CtrlLoop::loadStepperContext - pmCPUControl (pmioctlPStateContext_t) failed, result = 0x16
[AGPM Controller] unknownPlatform
Try another Mac Model, I'm using iMac 12,2 with a Core i7 2600k, I sent you a private msg.
About AGPM Controller error I founded some info in a Korean post that I guy suggested this:Open AppleGraphicsPowerManagement.kextLook in Info.plist if the file have the ID for you video card.For example my video card is a ATI 6850 ID=6739 and I'm using iMac 12,2 in SMBios, the <key> for my video card don't appear for iMac 12,2 see the original code below:Original<key>iMac12,2</key>
<dict>
<key>Vendor1002Device6720</key>
<dict>...
<key>Vendor1002Device6722</key>
<dict>...
<key>Vendor1002Device6740</key>
<dict>...
</dict>
So I just copied the code from 6740 (ATI 6770) and renamed to 6739, I know that isn't the perfect solution but I didn't find the codes to 6739 in any place and the cards are similar.EDITED<key>iMac12,2</key>
<dict>
<key>Vendor1002Device6720</key>
<dict>...
<key>Vendor1002Device6722</key>
<dict>...
<key>Vendor1002Device6740</key>
<dict>...
<key>Vendor1002Device6739</key>
<dict>...
</dict>
After that the AGPM error gone, now I see the msg [AGPM Controller] build GPUDict by Vendor1002Device6739 in log file.Sorry about the bad english and all credits to the Korean Guy,
I don't know the name cause was writing in Korean.