E6520 Mobile: OpenCore help requested

[fspkwonx86]

So the only thing i think to fix this problem, i know clover drops CPU0IST CPUPM DMAR and MCFG (normalizes headers),

and (Patches AppleIntelCPUPowermanagement)... this combined with a simple DSDT that includes the DTGP Method

and changing your Preferred Graphics Card to GFX0 and disabling the IGPU renaming that also , working on that now,  is how to get it to work with the Installer.. and if more specific

you then have to inject device-id properties into the dsdt and dont rely on clover/opencore to do it....

With clover i had it quirkless... 

 

Would anyone suggest how to do this in OpenCore which SHOULD be the same as CLOVER i just never entered in those fields..  

i mean i dont know what its asking for in the patches section

right now it doesnt freeze anymore (by freezing it shows no apple logo just enters into a black screen if using Blackosx theme or Textmode no Verbose just Choosing the Operating System: OK) it flickers and restarts.. just like when trying to use CLOVER without patching first..

 

at first apfs drive detection is an issue but i just include apfsdriverloader.efi that someone shared and the 2021 build works.. in regards

to drive detection but wont do anything else without the driver... the debug log shows that it gets to which specific points before spewing out symbols

in this case is its patched the acpi and gotten volume detection and is a problem handing off control to XNU which is probably specifically power management

related and a combination of the gpu specific things that im working on right now

 

 

[Hervé]

It was a bit difficult to follow and understand your writing but, in a nutshell, it seems you want an OpenCore-equivalent of your Clover config.

You've not posted this Clover config and you've not stated what OS X/macOS version you're using or targeting.

 

One thing, though, is that you wrote about GFX0 and disabling IGPU which leads me to conclude that your Sandy Bridge E6520 is the nVidia model. If so, please that that it is fitted with a Fermi NVS 4200M dGPU chip that's very poorly supported to not supported since 2016 macOS Sierra 10.12. On the iGPU front, HD3000 was officially dropped in macOS Mojave 10.14 though patches do exit to extend support in subsequent macOS versions despite graphics bugs/gremlins.

 

Do clarify your situation so that people may try and give you some assistance.

 

This being said, with regards to an OpenCore config for a Sandy Bridge laptop, did you consult the Dortania documentation to begin with?

https://dortania.github.io/OpenCore-Install-Guide/config-laptop.plist/sandy-bridge.html

• to drop Cpu01st and CpuPm SSDT table, do so in the ACPI->Delete section of the config
• to rename ACPI devices, do so in the ACPI->Patch section
• to patch AICPUPM, do so the the kernel->Quirks section

All those are very easily done with a tool such as OpenCoreConfigurator if you're not familiar with the text editor method for creating/editing your OC config.