OpenCore Legacy Patcher - Ventura 13.2 iMac 11,3 Nvidia 770M - Boot Issues

[hawkman507]

I have an iMac 11,3 upgraded with SSD, a Core i7, 16 GB of RAM and a Nvidia 770M graphics card. Great machine, and an excellent daily driver. My only complaint is that the Xcode simulator no longer works but it's not my development machine so that's fine.

I had previously installed OpenCore Legacy Patcher with Ventura 13.1 on it and had an issue where it would get stuck during boot at what I believe to be the "second stage kernel extensions" (see here) with the boot progress bar about halfway across. Booting with the USB prepared by OCLP worked so I previously solved the issue by copying the files from the USB EFI partition over to my Mac. Crude, but effective.

I'm now attempting to upgrade to 13.2. I ran into the same problem after installing Ventura 13.2 via OCLP. Thinking that I'd solve it the same way, I tried booting from the USB to macOS (as opposed to the installer/recovery boot on the USB that OCLP creates) but it gets stuck in the same place as booting from the SSD directly.

Weirdly, taking a different OCLP USB prepared for my 2009 Mac Mini (which works just fine) gets me to the Finder - with most things working including Metal but no sound - however OCLP complains bitterly that I'm running the wrong version and asks me to rebuild and install. I've done this and it leaves me in the same situation as I was before.

My suspicion is that this is something to do with my upgraded 770M video card and its drivers. I see two ways to approach this: try to fix the video drivers with the "supported" configuration or to fix the sound with the Mac Mini configuration.

Can anyone point me in the direction of how I might debug / fix this?

Thanks

 

[MikeG17901]

I am not an expert on OC, but I believe the OCLP as distributed is only compatible with the OEM graphics (Radeon HD 5750).

 

[hawkman507]

Possibly so, but how do I modify it to boot with the 770M? The macmini3,1 EFI is working *almost* fine, minus the sound.

Alternatively, how do I add the sound to the macmini3,1 EFI?

Thanks!

 

[hawkman507]

I just installed again with Verbose mode on, and it gets stuck at

DK: AppleUserHIDEventDriver-0x1000004a3:force close (IOHIDInterface-0x10000004a0)

There's also a line just above which says "force close" as well.

I wouldn't think that the HID drivers would be an issue - that hardware is obviously original in this iMac. And I believe the macmini3,1 EFI gets past this so something funky is going on.

Anyone have any thoughts?

 

[early2008macbookpro]

Any work around for this issue that I'm suffering on my Fully loaded Late 2013 MBP 11,3?

 

[hawkman507]

The solution for me was to re-flash the Nvidia 770M card with the latest firmware but that would not apply for a MacBook Pro.

 

[early2008macbookpro]

The solution for me was to re-flash the Nvidia 770M card with the latest firmware but that would not apply for a MacBook Pro.

It's a Simple Fix Boot into safe mode then install Opencore.

 

[fabio8v]

Hi
I reopen this discussion, I got a 770m, 3gb, by nick[D]vB, I have the same problem, Monterey, Ventura and Sonoma stack on the second boot, can someone confirm the solution at the post before? Or someone has a firmware compatible for this video card? My machine, iMac 12,2, i7, 24 Gb, 1Tb ssd
Thank in advance

 

[fabio8v]

correction..on the 4° boot it stacks, the solution is not a solution, I mean, if I choose recovery mode from the boot, it goes in the installation and nothing else

 

[Terrapater]

The solution for me was to re-flash the Nvidia 770M card with the latest firmware but that would not apply for a MacBook Pro.

I now habe the same problem with the same machine but with a GTX 765m card. So re-flashing solved all problems?