iM 4,1-14,4 Problem: Nvidia Quadro K1100M by Nick[D]vB 2 GB - OCLP 2.0.2 and Sonoma 14.7

[fototronick]

Dear
I use a 27-inch iMac, Mid 2011- iMac12,2, which I keep working with great appreciation, because it is the invaluable piece, the last models of Steve Jobs era.
I have the Nvidia Quadro K1100M by Nick[D]vB 2 GB video card installed and it has worked correctly, except in these last updates up to OCLP 2.0.2 with Sonoma 14.7
I sincerely appreciate all the effort made and the incredible goals achieved by the OCLP team, as a Mac user since 1989 I never saw or dreamed what could be achieved.
But I have this problem with the video card in PhotoBooth, WhatsApp, Firefox and FaceTime.
In the case of FaceTime, WhatsApp and PhotoBooth the audio is completely corrupted and I have to restart the iMac.
I have also updated it to WiFi 802.11 a/b/g/n/ac Broadcom BCM43xx 1.0 (7.77.111.1 AirPortDriverBrcmNIC-1772.1)
and Bluetooth BCM_20702B0 v150 c9317
The rest is original except obviously the HD, replaced by a Crucial MX500 sata SSD.
If someone could tell me how to solve this problem I would really appreciate it.
Regards.

 

[ToniCH]

This could be totally unrelated to your problem but... 🧐

1. I have a 2011 27" iMac12,2. Its otherwise stock but added RAM + SSD.
2. I have been running OCLP 0.x - 1.5 with Monterey 12.7.6 for at least a year, probably more. No major problems whatsoever.

So, yesterday I was trying to get an AMD eGPU to work with the machine. It can be seen in the About this mac - more info. But it doesn't come active, so I need Kryptonite. I didn't want to mess with my OCLP EFI settings on the internal SSD so I made a new EFI partition to a USB -stick and installed OC to it. With the OCLP only it boots just fine but after adding Kryptonite it fails to boot and hangs mid boot.

So, I was thinking: my Root patches are still OCLP 1.50 -version. Maybe the OCLP 2.02 has added something relevant? So, I updated to the 2.02 and even updated the root patches to my machine. So, it's now running OCLP 2.02 +Monterey. Still no Kryptonite in the internal SSD. This is when everything went to crap. The machine boots, I can log in but then its pretty much unresponsive. Dock appears, top menus and icons appear after awhile, nothing appears on the desktop. Menus are responsive and I can even open top menu items like MacFansControl etc. with no problem. But, if I try to start any program from the dock or apps-folder they bounce for a while and then indicate they are running but nothing appears on the screen. I can even cmd+tab and switch programs but no program windows open on screen.

I fought with this for the most of the day trying many things. I installed Monterey on top of the old one, I repaired disk, booted in safe more, then even formatted the drive and reinstalled the OS. Same result every time.

Then I started to suspect the OCLP 2.02 root patches. I again reinstalled the OS but this time with OCLP 1.50 and voilà!, I got my working iMac 2011 back.

I am now in belief that the 2.02 was somehow non compatible with my iMac 2011. Cannot explain it but...just maybe?! 🤨

 

[fototronick]

This could be totally unrelated to your problem but... 🧐

1. I have a 2011 27" iMac12,2. Its otherwise stock but added RAM + SSD.
2. I have been running OCLP 0.x - 1.5 with Monterey 12.7.6 for at least a year, probably more. No major problems whatsoever.

So, yesterday I was trying to get an AMD eGPU to work with the machine. It can be seen in the About this mac - more info. But it doesn't come active, so I need Kryptonite. I didn't want to mess with my OCLP EFI settings on the internal SSD so I made a new EFI partition to a USB -stick and installed OC to it. With the OCLP only it boots just fine but after adding Kryptonite it fails to boot and hangs mid boot.

So, I was thinking: my Root patches are still OCLP 1.50 -version. Maybe the OCLP 2.02 has added something relevant? So, I updated to the 2.02 and even updated the root patches to my machine. So, it's now running OCLP 2.02 +Monterey. Still no Kryptonite in the internal SSD. This is when everything went to crap. The machine boots, I can log in but then its pretty much unresponsive. Dock appears, top menus and icons appear after awhile, nothing appears on the desktop. Menus are responsive and I can even open top menu items like MacFansControl etc. with no problem. But, if I try to start any program from the dock or apps-folder they bounce for a while and then indicate they are running but nothing appears on the screen. I can even cmd+tab and switch programs but no program windows open on screen.

I fought with this for the most of the day trying many things. I installed Monterey on top of the old one, I repaired disk, booted in safe more, then even formatted the drive and reinstalled the OS. Same result every time.

Then I started to suspect the OCLP 2.02 root patches. I again reinstalled the OS but this time with OCLP 1.50 and voilà!, I got my working iMac 2011 back.

I am now in belief that the 2.02 was somehow non compatible with my iMac 2011. Cannot explain it but...just maybe?! 🤨

Super...!!!
Thank you very much for your reply.
Your comments suggest lines of evidence and research.
I will continue trying to solve the problem, and as soon as I have any news, I will post it.
Regards

 

[fototronick]

Your comments suggest lines of evidence and research.
I will continue trying to solve the problem, and as soon as I have any news, I will post it.

@ToniCH
Ok, I've done the whole procedure.
I've reinstalled everything from scratch, with the SSD all formatted, without EFI. Clean installation.
But this time with Sequoia 15.1 (24B83) and OCLP 2.1.0.
The difference is that I've done a "Build and Install OpenCore" in the pendrive installer from "Host Model" and I've given 15 seconds to the "Boot Picker Timeout" for the bluetooth mouse and keyboard (although during the installation I've used them wired).
And everything works very well, it boots with the Apple logo, brightness control, camera, video, sound, microphone, wifi, Ethernet, Bluetooth, SD reader... etc.
I'm very grateful to the Dortania team for allowing this old 2011 iMac 12.2 to be resurrected from the dead... Miracle.
I'm sure Steve Jobs is smiling and applauding from beyond the grave.
Thanks...!!!