iM 4,1-14,4 2011 iMac Graphics Card Upgrade

[Fran Frin]

** NVIDIA GeForce GTX780M Mac Edition ROM **
Genuine Native Boot Screen & Brightness Control

View attachment 942195​

There are many members here that have this card now and have been using it with & without Opencore. The previous rom iterations did not initialize the “built-in” iMac LCD screen but instead spoofed it to use the Cinema Display as the internal screen which rendered brightness control non-functional, and forced the use of a bootloader to add the feature back via a kernel extension.


This ROM does not require a 3rd party bootloader like OpenCore.

ROM testing has already been underway for the past few weeks by @Ausdauersportler and @highvoltage12v.

There is an overclock present on the GTX780M from the base rom. I would suggest you to use a 3-pipe heatsink for this GPU. Apply proper thermal pads and appropriate heat dissipating grease like K5pro to the areas that are in contact with the heat sink. Keep mac fans up and running to achieve better control of cooling as well.

Brightness Control Stepping Modifcation

-Turn computer on, hold down Command(⌘)-R
-Choose Utilities > Terminal
-Enter:csrutil disable
-Reboot
-Download and open 'Kext Utility v2.6.6'

-Navigate to S/L/E (System/Library/Extensions)
-Copy "AppleBacklight.kext" to Desktop
-Edit: AppleBacklight.kext/Contents/Info.plist
-Scroll down to: IOKitPersonalities > AppleIntelPanelA > ApplePanels
-There you find several Apple LCD profiles.
-For the iMac 2011 27" machine locate:
<key>F10Ta007</key> <data> ABEABgALABQAHAAnADMAPwBOAFwAZwBzAIEAkQClAL8A 2wD/ </data>

-Change the <data> section to:
ABEAAgA3AF8AigCzAOsBJAFnAakB1AIJAlQCogL4A00DlgRpBGk=

-Drag your modded kext into Kext Utility, allow it correct permissions
-Applebacklight.kext.bak folder will be created
-Reboot

The above data pattern will allow for a wider span of steppings for the brightness control and utilizes more of the capacity of the HD3000. If you have a different machine, your panel ID can be found by going to System Preferences > Displays > Color > Open Profile > mmod

There will be a separate instruction for Windows 10 users to adjust the RMBrightness scaling accordingly.


Important Links:
USB Flashing for SSH @xanderon method <link>
@Curtis Gross – walkthrough video <link>
Heat Sink MOD to grind down the edges <link>
Heat Sink mounting @tgaillar <link>
Kexts for sleep/iGPU (Mojave/Catalina) <link>



More GPU Roms to come... Enjoy!

Great, Hope k610M native!!!

 

[Ausdauersportler]

I was so happy that I did it with the xanderon method and his ROM. Now I wanted to fix the brightness control & sleep mode problem with your ROM 780M_BR2...it worked nearly everything but unfortunately the max brightness of the 780M_BR2.Rom is not good. So tried to fix it with this Brightness Control Stepping Modifcation it worked until I should drag the modified kext in kext utility, I got the message "BackUp : "AppleBacklight.kext" to "AppleBacklight.kext.bak" ... Error."

I would appreciate help so much.

THX

You can got to the first post back to the table and following the link within the column brightness control or jumping directly there - install this extension as your did before with the sleep kexts...

 

[Ausdauersportler]

Great, Hope k610M native!!!

Please do not harass the BIOS developers to go faster, release a particular BIOS, etc. Please do not clog up the thread with useless posts asking if your specific card will get a new BIOS.

You just made it to my personal ignore list!

 

[rafa85]

You can got to the first post back to the table and following the link within the column brightness control or jumping directly there - install this extension as your did before with the sleep kexts...

Thanks for your fast respond...the Fixup.kext solved the problem.I don't know why I couldn't install it with disk utility but It worked with Hackintool. Now everything is working with the 780M and Catalina. This community and your work is amazing. VIELN VIELN DANK!

 

[m0bil]

Go to the ACPI section and uncheck the aml file selection.

I will later publish on the same post an update of the CL image containing some edited config.plist files.

It would be soooo great if you guys in the field owning all the different systems could do some research, too. You could probably fix some errors and report back! That would help a lot.

Thanks in advance!

Sure, anything I can test with my configuration I'll be glad to help.

 

[Ausdauersportler]

Big Sur on iMacs 2009 and 2010​

Last night the problem to install Big Sur on the 2009 and 2010 iMacs has been solved. I will add later some comments to the first post. You can take a look at this post to see the first successful installation.

To achieve this (Discord) users need an Open Core 0.6.2 with some adjustment documented here or they just download the latest Catalina Patchers image and replace the OC folder with this one from Discord.

I do not like copying digital data, but you may use the attached copy instead of joining Discord or editing the config.plist manually. As of now I could not change the existing config.plist files provided on the Catalina Loader to work with Big Sur.

You need to download the latest Big Sur Beta 11 , unpack it, create as usual a USB installer, download and apply the latest micro patcher 0.4.4 following exactly the online guide there step by step. On every reboot during the installation you need to boot the OC before, again. You can install the complete modded OC installation (EFI Folder) to the EFI partition of your boot disk, too. This makes it more convenient.

As of today there are no special iMac kexts for this systems applied automatically by the micro patcher (like BacklightFixup and Lilu and patched AppleGraphicsControl). I will add this later this weekend.

So you will get a running Big Sur lacking some features...

Have Fun!

Edit:
1. Beta 11 works on my 11,3 iMac 27 mid 2010, 11,2 21.5 iMac 2010 and 11,1 27 iMac 2009
2. To install you need this OS package. In case you use Catalina Loader just rename the existing OC folder to OCIMAC and copy the attached on into the EFI folder. Now try to start the Big Sur USB installer.
3. I made new config.plist files for NVIDIA and AMD to be used AFTER installation with your iMac bringing back brightness control for Nvidia and acceleration for AMD. Drop them into the OCIMAC folder, rename the OC to OC-BIGSUR-INSTALL and the OCIMAC back to OC - now you have a method to switch back and force for installation and normal use unless we are able go get a single plist file for both cases.

 

[Ausdauersportler]

Sure, anything I can test with my configuration I'll be glad to help.

Try the latest 0.6.2 upload with your machine

 

[m0bil]

Try the latest 0.6.2 upload with your machine

Ok, I've downloaded latest 0.6.2 from your post, used disk utility to restore it to a 4GB usb drive and used included config.NVIDIA.plist

Then I have booted into latest Catalina and High Sierra I have installed.

Everything seems to works fine, brightness works and brightness stepping levels are correct for my K610m.

Only difference I see with 0.6.0 is that it boots on verbose mode.

 

[m0bil]

Ok, I've downloaded latest 0.6.2 from your post, used disk utility to restore it to a 4GB usb drive and used included config.NVIDIA.plist

Then I have booted into latest Catalina and High Sierra I have installed.

Everything seems to works fine, brightness works and brightness stepping levels are correct for my K610m.

Only difference I see with 0.6.0 is that it boots on verbose mode (I mean the 0.6.0 I had adapted to my setup)

 

[Ausdauersportler]

Ok, I've downloaded latest 0.6.2 from your post, used disk utility to restore it to a 4GB usb drive and used included config.NVIDIA.plist

Then I have booted into latest Catalina and High Sierra I have installed.

Everything seems to works fine, brightness works and brightness stepping levels are correct for my K610m.

Only difference I see with 0.6.0 is that it boots on verbose mode.

Okay, it is the -v in the boot-args...
Please try this

 

[m0bil]

Okay, it is the -v in the boot-args...
Please try this

Yep, that works great, no longer verbose

 

[iPlasm]

Temperatur Monitoring (not controlling)​

Using the FakeSMC extensions coming with the Catalina Loader and the HWMonitor tool you can check in parallel both the GPU and GPU Sink temperature. Both should stay close even under load. Of course this is a steady state observation. If you switch on the load than the GPU will heat up faster but should transfer the heat fast to the sink and so both parts come closer in the temperature over time (some laws of thermo dynamics make this possible).

To have an optimal heat transfer of some flat GPU types (mainly AMD WX4130/WX4150/WX4170 and NVIDIA K610M) one should place a thin 0.5mm or 1mm copper plate between GPU and copper part of the heat sink. Use thermal paste on both contact surfaces of the plate! Without this plate you will only burn the GPU to death over a short time. Keep in mind these sinks have been constructed for different card types and need some adjustment!

Attached you will find a picture showing the small copper plate placed on the GPU and screen shot showing the same card in action with UNIGINE Valley benchmark and close temperatures or 46C on the sink and 48C on the GPU using the HWMonitor. Both temps are marked in red circles.

Controlling has to be done with Macs Fan Control or similar working software tools!

Dear, Could you show or write the model number of your green card AMD? I guess it's hidden under the white sticker....
Thanks

 

[dstd123]

Temperatur Monitoring (not controlling)​

Using the FakeSMC extensions coming with the Catalina Loader and the HWMonitor tool you can check in parallel both the GPU and GPU Sink temperature. Both should stay close even under load. Of course this is a steady state observation. If you switch on the load than the GPU will heat up faster but should transfer the heat fast to the sink and so both parts come closer in the temperature over time (some laws of thermo dynamics make this possible).

To have an optimal heat transfer of some flat GPU types (mainly AMD WX4130/WX4150/WX4170 and NVIDIA K610M) one should place a thin 0.5mm or 1mm copper plate between GPU and copper part of the heat sink. Use thermal paste on both contact surfaces of the plate! Without this plate you will only burn the GPU to death over a short time. Keep in mind these sinks have been constructed for different card types and need some adjustment!

Attached you will find a picture showing the small copper plate placed on the GPU and screen shot showing the same card in action with UNIGINE Valley benchmark and close temperatures or 46C on the sink and 48C on the GPU using the HWMonitor. Both temps are marked in red circles.

Controlling has to be done with Macs Fan Control or similar working software tools!

I have iMac 2011 i7 with GTX765m, my temp difference for the GPU Heatsink & Gpu Die is 3 to 5 degrees.
Should i install copper plate between GPU and copper part of the heat sink?
My graphics card works excellent in other-ways.

 

[Ausdauersportler]

I have iMac 2011 i7 with GTX765m, my temp difference for the GPU Heatsink & Gpu Die is 3 to 5 degrees.
Should i install copper plate between GPU and copper part of the heat sink?
My graphics card works excellent in other-ways.

No, you can use the HWMonitor to create graphs and analyse your real time data. If you do not experience under load after a long run bigger gaps than this 3-5C there is no need to reinstall.

My post was explicitly focused on the special smaller cards MXM A cards. Who ever may have bigger gaps with a card like yours may just have a "not good enough" installation.

If you face gaps of 10+ C/K/F it might by a problem...

 

[dstd123]

No, you can use the HWMonitor to create graphs and analyse your real time data. If you do not experience under load after a long run bigger gaps than this 3-5C there is no need to reinstall.

My post was explicitly focused on the special smaller cards MXM A cards. Who ever may have bigger gaps with a card like yours may just have a "not good enough" installation.

If you face gaps of 10+ C/K/F it might by a problem...

Great, usually the gap goes less after using my mac for some time.
Thankx for you info!

 

[rafa85]

Thanks for your fast respond...the Fixup.kext solved the problem.I don't know why I couldn't install it with disk utility but It worked with Hackintool. Now everything is working with the 780M and Catalina. This community and your work is amazing. VIELN VIELN DANK!

Oh damn, unfortunately I was too fast with my happiness. I had to recognize that after every wake up from the Sleep Mode a reboot is necessary. I only see my mouse on a black screen and I have to reboot via the power button.
Does someone know the problem?

My status:
- GTX 780M with xandor flash method and 780M_BR2.ROM
- Catalina

Folgender Fehler kommt:

Power button pressed during wake transition after 11167 ms.





Failure code:: 0x05d5100b 00000027

etc.





================================================================


Date/Time: 2020-10-30 17:47:12 +0100


OS Version: ??? ??? (Build ???)


Architecture: x86_64


Report Version: 29





Data Source: Stackshots


Shared Cache: 0x5d1f000 FDBC32F2-892B-323B-AFA1-3BAD45FD6E4A





Event: Sleep Wake Failure


Duration: 0.00s


Steps: 1





Boot args: -no_compat_check amfi_allow_any_signature=1





Time Awake Since Boot: 220s











Process: kernel_task [0]


UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD


Architecture: x86_64


Version: Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64


Footprint: 68 KB


Start time: 2020-10-30 17:47:12 +0100


End time: 2020-10-30 17:47:12 +0100


Num samples: 1 (1)

 

[herrdude]

Oh damn, unfortunately I was too fast with my happiness. I had to recognize that after every wake up from the Sleep Mode a reboot is necessary. I only see my mouse on a black screen and I have to reboot via the power button.
Does someone know the problem?

My status:
- GTX 780M with xandor flash method and 780M_BR2.ROM
- Catalina

Folgender Fehler kommt:

Power button pressed during wake transition after 11167 ms.





Failure code:: 0x05d5100b 00000027

etc.





================================================================


Date/Time: 2020-10-30 17:47:12 +0100


OS Version: ??? ??? (Build ???)


Architecture: x86_64


Report Version: 29





Data Source: Stackshots


Shared Cache: 0x5d1f000 FDBC32F2-892B-323B-AFA1-3BAD45FD6E4A





Event: Sleep Wake Failure


Duration: 0.00s


Steps: 1





Boot args: -no_compat_check amfi_allow_any_signature=1





Time Awake Since Boot: 220s











Process: kernel_task [0]


UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD


Architecture: x86_64


Version: Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64


Footprint: 68 KB


Start time: 2020-10-30 17:47:12 +0100


End time: 2020-10-30 17:47:12 +0100


Num samples: 1 (1)

I have this problem with my K4100m. It also knocks out my bluetooth (no mouse or keyboard). I have to reboot multiple times to get my bluetooth back. It is my secondary computer so I just turn it off when I finished with it.

I tried the card in a different machine and the result was the same. So, probably the card is dying...

 

[Ausdauersportler]

Oh damn, unfortunately I was too fast with my happiness. I had to recognize that after every wake up from the Sleep Mode a reboot is necessary. I only see my mouse on a black screen and I have to reboot via the power button.
Does someone know the problem?

My status:
- GTX 780M with xandor flash method and 780M_BR2.ROM
- Catalina

Folgender Fehler kommt:

Power button pressed during wake transition after 11167 ms.





Failure code:: 0x05d5100b 00000027

etc.





================================================================


Date/Time: 2020-10-30 17:47:12 +0100


OS Version: ??? ??? (Build ???)


Architecture: x86_64


Report Version: 29





Data Source: Stackshots


Shared Cache: 0x5d1f000 FDBC32F2-892B-323B-AFA1-3BAD45FD6E4A





Event: Sleep Wake Failure


Duration: 0.00s


Steps: 1





Boot args: -no_compat_check amfi_allow_any_signature=1





Time Awake Since Boot: 220s











Process: kernel_task [0]


UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD


Architecture: x86_64


Version: Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64


Footprint: 68 KB


Start time: 2020-10-30 17:47:12 +0100


End time: 2020-10-30 17:47:12 +0100


Num samples: 1 (1)

Go back to post #1, do not pass start, do not take €4000, but search for the sleep issue and get the extensions installed.
This is just like playing with Lego - follow the plan!

P.S.: Check for the Spoiler tag and hide the long error messages there.

 

[Dent_]

So you cannot get it to stay booted, at all?

If you can, I’d highly recommend this method: https://forums.macrumors.com/thread....1596614/page-175?post=28184981#post-28184981

Of course I missed the part about disconnecting all internal drives - much easier than fumbling blindly with the boot selector. My K1100M is running beautifully. THANKS to all who've helped with the post.

 

[Ausdauersportler]

For those about to use Big Sur: We salute you!

2009/2010 iMac Catalina Loader users, only!​

Attached you will find the (Nvidia) K1100M/K2100M/K610M config.list and two files to be saved into the ACPI folder and Kexts folder on your Catalina Loader. Only users of late 2009 and mid 2010 iMacs will need these mods. Users of Catalina Loader have an advantage, now.

I wrote some month ago that we will likely face OpenCore again when trying to get Big Sur support - here we are!

Plan:

1. put config.plist into your EFI/OC folder
2. put SSDT-CPBG.aml into the EFI/OC/ACPI folder
3. put telemetrap.kext into the EFI/OC/Kexts folder
4. download BS Beta 11 and prepare the USB boot stick
5. down the micro patcher and patch the USB boot stick
6. reboot using the Catalina Loader and start the USB installer
7. create a new 100GB partition to store Big Sur (no APFS container right now)
8. cross fingers!

Now you can try to install Big Sur. Please do not try this if you cannot use terminal commands.

The verbose flag is used, you will see pages of text running over your screen...you can safely ignore this if at the very and the boot progress bar comes up. Other wise something went wrong and you can take a picture for your living room.

EDIT:

Situation is a little bit more complex than expected. While I was perfectly able to install Big Sur on 2009/2010 systems using the OC.zip attached to the former post and starting an using the installed Big Sur with the config.plist attached and the modified Catalina Loader OC 0.6.2 I could not install with this file. So we have the situation where we will install using another OC.

This will likely remain like this because we will not use the AMD config.plist files to install or update. Other figured out the hard way that with a spoofed ID of a more modern supported Mac one can get unwanted firmware upgrades which may brick your system. So stay away from spoofing a iMacPro1,1 ID unless you are an expert.

 

[Banarne357]

I'm having an issue with an 880M in my 27" 2010 iMac. I flashed Nikeys BIOS and everything seemed fine, boot screen worked, no issues in macOS, everything seemed to work like it should.
But when I try and run Unigine Heaven or Valley, it runs for a few seconds and then crashes. Sometimes the app crashes and I get tossed back to the desktop, or I get completely logged out and need to login again. macOS itself does not kernel panic or exhibit any other issues so I can continue to use it immediately without problems.
I get the same result in both High sierra and Catalina. Tried it in Windows 10 as well, with a similar problem.

I tried playing a game, Civilization V, and it works fine for several hours, until it randomly crashes in the same way as Unigine.

If I use my 780M, everything works without any issues at all.

I googled like crazy for my symptoms and found that the logout issue I described could be attributed to a driver issue in macOS, or a faulty card. But no concrete evidence, people were mostly guessing, it seemed.

Am I SOL and got a hold of a bad card in some way, or is it possible there is something in Nikeys BIOS, or in 2010 iMacs that causes these types of issues?

 

[Ausdauersportler]

Catalina Package Installer
(Catalina iMac 2011 sleep/AGC/iGPU/backlightfixup installer)

-----> Download release from GitHub <-----
​

Attached you will find the a kernel extension package installer currently working on Catalina 10.15.4 and later. It will install all the packages listed in this post @highvoltage12v made years ago.

It will patch the current installed AppleGraphicsControl (AGC) as described in this post addressing the black screen issue and the AppleBacklightFixup needed for ++ type Nvidia cards.

After starting the Apple package installer (double click) you can choose the destination and select the packages to be installed according to your system and card type. For this reason I separated the complete sets in several subsets. You can use the installer to install AGC, BacklightFixup, FakeSMC, and WhateverGreen/Lilu on 2009 and 2010 systems, too.

Let the @dosdude1 installer finish it's installation and patching, if some patches have been overwritten apply them first and reboot. If you see no more messages from the @dosdude1 post install patcher you can start using this installer.

1. 2011 HD3000 sleep extensions (Mojave & Catalina)
2. 2011 sleep extensions (Catalina, only)
3. Nvidia AppleGraphicsControl AGC (all iMacs, Nvidia card users, only)
4. Nvidia BacklightFixup (all iMacs, Nvidia card users, only)
5. AMD HD3000 sleep (AppleIntelSNBGraphicsFB.kext, 2011 iMac AMD Polaris card users only)
6. Nvidia AppleGVA.framework (2011 only)
7. FakeSMC Package (all iMacs, all graphics cards)
8. vit9696 WhateverGreen and Lilu (all iMacs, all graphics cards)

How to use:

1. iMac 2011, Catalina, new AMD GPU (with Open Core)

2. iMac 2011, Catalina, new NVIDIA K610M, K1100M, K2100M GPU (with Open Core).

3. iMac 2011, Catalina, new NVIDIA GPU (all NVIDIA except K610M, K1100M, K2100M, no Open Core)

Notes:

- This installer currently will only install files on Catalina 10.15.4 and later versions of Catalina
- There are several pictures attached showing the correct settings for the three different cases 1. AMD, 2. Nvidia, and 3. Nvidia K610/K11000M/K2100 - you need to be able to identify the correct picture by the NAME of the picture...

Recipe:

If you are not willing to experiment on your current Catalina installation please create a new APFS Container your main SSD/HDD, install Catalina 10.15.7 into it (it will use barely 15GB on your disk), boot into this newly created MacOS, and use the installer package to do the final adjustments. Check success there and then apply to production system.

​

Have fun!

11/14/2020: upload a new version containing the plist patch working on all installed versions of the AppleGraphicsControl instead of replacing the file completely.
11/26/2020: upload a new version created on Catalina to address the iGPU problem
12/07/2020: Late Nikolaus gift, uploaded new version and fitting un-install package. you can use the un-install package only when used this new installer before!
12/09/2020: added installation instructions

 

[FlorisVN]

Seeking for Beta Test Users (Package Installer)
(Catalina iMac 2011 sleep/AGC/iGPU/backlightfixup installer)

​

Attached you will find the a kernel extension package installer currently working on Catalina 10.15.4 and later. It will install all the packages listed in this post @highvoltage12v made years ago.

It also contains the latest version of the patched AppleGraphicsControl (AGC) from this post addressing the black screen issue and the AppleBacklightFixup needed for ++ type Nvidia cards.

After starting the Apple package installer (double click) you can choose the destination and select the packages to be installed according to your system and card type. For this reason I separated the complete sets in several subsets. You can use the installer to install AGC, BacklightFixup, FakeSMC, and WhateverGreen/Lilu on 2009 and 2010 systems, too.

1. 2011 HD3000 sleep extensions (Mojave & Catalina)
2. 2011 sleep extensions (Catalina, only)
3. Nvidia AppleGraphicsControl AGC (all iMacs, Nvidia card users, only)
4. Nvidia BacklightFixup (all iMacs, Nvidia card users, only)
5. AMD HD3000 sleep (AppleIntelSNBGraphicsFB.kext, 2011 iMac AMD Polaris card users only)
6. Nvidia AppleGVA.framework (2011 only)
7. FakeSMC Package (all iMacs, all graphics cards)
8. vit9696 WhateverGreen and Lilu (all iMacs, all graphics cards)

Attached you will find some selections screen shots. You can use the installer to select a single package only. You can use the installer with 2009 and 2010 iMacs, too. I marked all 2011 specific packages.

Note: This installer currently only installed files on Catalina 10.15.4 and later!

Recipe:

If you are not willing to experiment on your current Catalina installation please create a new APFS Container, installer Catalina 10.15.7 into it (it will use barely 15GB on your disk), boot into this newly created MacOS, and use the installer package to do the final adjustments.

​

Have fun!

This looks awesome, if possible perhaps a mojave version can also be made someday..?

 

[rafa85]

Seeking for Beta Test Users (Package Installer)
(Catalina iMac 2011 sleep/AGC/iGPU/backlightfixup installer)

​

Attached you will find the a kernel extension package installer currently working on Catalina 10.15.4 and later. It will install all the packages listed in this post @highvoltage12v made years ago.

It also contains the latest version of the patched AppleGraphicsControl (AGC) from this post addressing the black screen issue and the AppleBacklightFixup needed for ++ type Nvidia cards.

After starting the Apple package installer (double click) you can choose the destination and select the packages to be installed according to your system and card type. For this reason I separated the complete sets in several subsets. You can use the installer to install AGC, BacklightFixup, FakeSMC, and WhateverGreen/Lilu on 2009 and 2010 systems, too.

1. 2011 HD3000 sleep extensions (Mojave & Catalina)
2. 2011 sleep extensions (Catalina, only)
3. Nvidia AppleGraphicsControl AGC (all iMacs, Nvidia card users, only)
4. Nvidia BacklightFixup (all iMacs, Nvidia card users, only)
5. AMD HD3000 sleep (AppleIntelSNBGraphicsFB.kext, 2011 iMac AMD Polaris card users only)
6. Nvidia AppleGVA.framework (2011 only)
7. FakeSMC Package (all iMacs, all graphics cards)
8. vit9696 WhateverGreen and Lilu (all iMacs, all graphics cards)

Attached you will find some selections screen shots. You can use the installer to select a single package only. You can use the installer with 2009 and 2010 iMacs, too. I marked all 2011 specific packages.

Note: This installer currently only installed files on Catalina 10.15.4 and later!

Recipe:

If you are not willing to experiment on your current Catalina installation please create a new APFS Container, installer Catalina 10.15.7 into it (it will use barely 15GB on your disk), boot into this newly created MacOS, and use the installer package to do the final adjustments.

​

Have fun!

Your respond to my last post solved my sleep problem but I still had the problem that my external monitor was not working.

So, I installed on top your new package...it is amazing, even the external monitor is working now. Until now no problems with the other things (fingers cross)!

Again, thank you very much!

(For all my config: 27'' iMac 2011/ GTX 780M/ xanderon flash method and 780_BR2.ROM, Catalina and now plus the package from @Ausdauersportler)

 

[TeyTey92]

Hi,

I using a iMac 2011 27" with WX7100, OpenCore and Windows only. I just wanted to extend my iMac with USB 3.0 and bought the Elgato Thunderbolt 2 Dock, to connect it to the unused Thunderbolt Port. But when I connect it, actual nothing happens (nothing shows up in the Device Manager). I also tried the other port but with the same result.

I know that only one port works for video output, but does the other port doesn't work at all? I downloaded the bootcamp driver with brigadier, but in the downloaded folders I cannot find any Thunderbolt driver at all. Can you help me?

Thanks,
Steffen

EDIT: It seems to be that at least on Windows the Thunderbolt port does not support hot plug, after a restart with connected dock its working