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

[junley4]

An update to my jump from Patched Sur to OCLP (latest) in my 12,2 iMac that has a K3100M GPU. I did a clean install and everything went well except that when I set the brightness to around 75% or higher, the screen flickers. Below that brightness level, the display is alright. I didn't encounter this with Patched Sur, maybe because the max brightness was only around 50 or 60%. Still I am satisfied with this result because 70% brightness is better than that of Patched Sur and now I am downloading the 11.3 update.

But anyone experienced this flickering on high brightness level with OCLP?

 

[motorm3]

What is the best big sur patcher I don't like the opencore legacy patcher everytime you boot you have to hold the option key.

 

[Jem47180]

Excuse me my computer translated my answer before I sent it ...
So I read well but my English is not perfect and I am using the google translator and I have to miss some important steps I think.
I have two hard drives, one with SnowLeopard and another with Windows 10.
With my old graphics card I open all but when I insert the new K4100 none start. Opencore must be installed before graphics card replacement?

 

[Ausdauersportler]

What is the best big sur patcher I don't like the opencore legacy patcher everytime you boot you have to hold the option key.

Please add a signature to your account so we can see what hardware you are using. The best option is by far OCLP. If you installed it correctly there is no need to hold an option key on boot. If you really believe there is a bug open an issue on the GitHub page.

 

[dksp]

Excuse me my computer translated my answer before I sent it ...
So I read well but my English is not perfect and I am using the google translator and I have to miss some important steps I think.
I have two hard drives, one with SnowLeopard and another with Windows 10.
With my old graphics card I open all but when I insert the new K4100 none start. Opencore must be installed before graphics card replacement?

You must flash your card with a Mac compatible firmware in order to use it.

2011 iMac Graphics Card Upgrade

** NVIDIA Quadro K4100M Mac Edition ROM ** Genuine Native Boot Screen & Brightness Control After much testing and research, I've put together a ROM for the NVIDIA Quadro K4100M which will allow: Genuine native brightness control Genuine ‘gray’ early-boot screen Genuine macOS bootloader...

forums.macrumors.com

 

[Ausdauersportler]

Excuse me my computer translated my answer before I sent it ...
So I read well but my English is not perfect and I am using the google translator and I have to miss some important steps I think.
I have two hard drives, one with SnowLeopard and another with Windows 10.
With my old graphics card I open all but when I insert the new K4100 none start. Opencore must be installed before graphics card replacement?

Having a total black screen with an NVIDIA card in an Late 2009 is the top issue and I put it on the first post, a link to a solution, too. This happen after a PRAM reset - each time again.

There is even a complete plan what to do, including the flashing of the video card. If you cannot use USB devices there might be another problem.

The best way to work with a Late 2009 is having an external display connected during the upgrade.

 

[motorm3]

Please add a signature to your account so we can see what hardware you are using. The best option is by far OCLP. If you installed it correctly there is no need to hold an option key on boot. If you really believe there is a bug open an issue on the GitHub page.

I have a IMac mid 2011 i7 2600 NVidia quadro k3100m and on boot if I don't hold option key to get boot selection drives it has a crossed circle no os. But if I go to boot menu and select efi and then my drive it boots as normal. I have to do this everytime

 

[Jem47180]

Super thank you for your answers! I am trying this today and I will keep you posted

 

[herrdude]

I have a IMac mid 2011 i7 2600 NVidia quadro k3100m and on boot if I don't hold option key to get boot selection drives it has a crossed circle no os. But if I go to boot menu and select efi and then my drive it boots as normal. I have to do this everytime

The answer is in the first post. Just like so many other answers that people need. I am convinced that this thread would only be 200 pages if people took the time to read carefully the first post.

OCLP is the best option out there. Next time you boot hold down the option key to get the boot picker, then hold down the CTRL key while selecting the OCLP. This will tell the iMac to remember this as the default choice. You can do the same when you choose your boot drive. Then your iMac will boot seamlessly.

PS If you reset your PRAM, you will have to do this again.

 

[Ausdauersportler]

I have a IMac mid 2011 i7 2600 NVidia quadro k3100m and on boot if I don't hold option key to get boot selection drives it has a crossed circle no os. But if I go to boot menu and select efi and then my drive it boots as normal. I have to do this everytime

Add it to your signature - add it to your signature, please create a signature to your account!

Using the CRTL key to make boot choice the default is standard Apple knowledge and not special to iMac, OpenCore, OCLP or this thread.

 

[motorm3]

Please add a signature to your account so we can see what hardware you are using. The best option is by far OCLP. If you installed it correctly there is no need to hold an option key on boot. If you really believe there is a bug open an issue on the GitHub page.

It's very strange installed opencore legacy patcher 2 times and everytime i had to boot i had to press option key to choose the drive. Now I just done a time machine backup and everything is working perfectly no more option key. It boots it's self. To me it looks like the fresh opencore legacy patcher install has missing files because before as well I could not use camera and microphone in privacy for apps now its all back to normal. Very strange.

 

[motorm3]

The answer is in the first post. Just like so many other answers that people need. I am convinced that this thread would only be 200 pages if people took the time to read carefully the first post.

OCLP is the best option out there. Next time you boot hold down the option key to get the boot picker, then hold down the CTRL key while selecting the OCLP. This will tell the iMac to remember this as the default choice. You can do the same when you choose your boot drive. Then your iMac will boot seamlessly.

PS If you reset your PRAM, you will have to do this again.

 

[motorm3]

The answer is in the first post. Just like so many other answers that people need. I am convinced that this thread would only be 200 pages if people took the time to read carefully the first post.

OCLP is the best option out there. Next time you boot hold down the option key to get the boot picker, then hold down the CTRL key while selecting the OCLP. This will tell the iMac to remember this as the default choice. You can do the same when you choose your boot drive. Then your iMac will boot seamlessly.

PS If you reset your PRAM, you will have to do this again.

OK thanks for your help. One more thing I've just done a time machine back up and everything is back to normal it boots it's self again before as well when I install fresh copy of open core legacy patcher 11.2.3 I had problems with apps using camera and microphone thy would not work or show up in privacy now after time machine backup everything back to normal. To me it looks like the opencore legacy patcher has missing files or something. Thanks for your help appreciate it.

 

[herrdude]

I just upgraded OCLP to 0.1.1 then I let the iMac update OTA to 11.3 and it worked flawlessly.

Unquestionably, the easiest upgrade ever!

PS It will reboot 3-4 times, this is normal.

 

[motorm3]

I just upgraded OCLP to 0.1.1 then I let the iMac update OTA to 11.3 and it worked flawlessly.

Unquestionably, the easiest upgrade ever!

PS It will reboot 3-4 times, this is normal.

I've done the same works very nice best patcher so far.

 

[ChrizLoud]

Ciao se risolvi il problema della retroilluminazione fammelo sapere....anche io ho provato tutto ma non ci sono riuscito, grazie Diego

Could we try that in English please?

 

[ChrizLoud]

Regarding the K4100M bug:

Caveats post-install/Bugs:
-16bit resolution glitch of UGA_DRAW_PROTOCOL - temporary solution: activate a sleep cycle and return, this should now clear the issue.

Is there any fix for this yet? Not a big problem but still at bit annoying.

 

[randallvfx]

@ChrizLoud OR we can try Google Translate and be globally inclusive. It takes the same amount of time to translate as your reply did to write:

"Hello if you solve the backlight problem let me know .... I also tried everything but I couldn't, thanks Diego"

 

[Ausdauersportler]

@ChrizLoud OR we can try Google Translate and be globally inclusive. It takes the same amount of time to translate as your reply did to write:

"Hello if you solve the backlight problem let me know .... I also tried everything but I couldn't, thanks Diego"

This is not really the focal point:

If everybody writes in his mother tongue all N potential readers would have to go the translate way while only the single (1) writer would have to do it before posting. We would have a N:1 waste of time, effort, energy, fossile foot print etc..

From this perspective I would say we stick with english language postings and replies.

 

[motorm3]

How can I get the brightness control in boot camp windows 10 the screen is always at 58C because it's at maximum brightness

 

[Ausdauersportler]

How can I get the brightness control in boot camp windows 10 the screen is always at 58C because it's at maximum brightness

Somewhere on the first post ... try to find it.

EDIT:
Have you ever tried to use the search button on top of the page (right hand side). You can limit the results of the search to this thread only. This is how I find things here...

 

[ChrizLoud]

@ChrizLoud OR we can try Google Translate and be globally inclusive. It takes the same amount of time to translate as your reply did to write:

"Hello if you solve the backlight problem let me know .... I also tried everything but I couldn't, thanks Diego"

Okej då skriver jag på Svenska istället för Engelska om du tycker det är en bra lösning för att alla ska förstå, det är ju bara att du och alla andra som inte kan svenska använder google translate... Så nu har jag slösat 5000 personer eller fleras tid till att översätta detta... Ganska onödigt enligt mig. 🇸🇪

As you can see it probably would be easier for everyone reading this thread if we keep it in English.

Ciao se risolvi il problema della retroilluminazione fammelo sapere....anche io ho provato tutto ma non ci sono riuscito, grazie Diego

To answer Diegos question... for Big Sur, no i did not solve the backlight issue. For High Sierra the work around fix worked great but not in Big Sur.

 

[Ausdauersportler]

To answer Diegos question... for Big Sur, no i did not solve the backlight issue. For High Sierra the work around fix worked great but not in Big Sur.

There is no backlight issue with Big Sur and never has been since it has been included to the micropatcher and later to OCLP. But what do I know?

 

[vep]

imac 21.5 2011 with k2100m flashed using Linux USB method
successfully installed OCLP on the USB drive
and Catalina on internal SSD using EFI on USB.
have Win 10 on separated SSD
everything was running ok for a couple of days, but today built in microphone just stopped working both in MacOS and Win10
PRAM reset didn't help
might it be just kind of software issue? anybody faced with it?

 

[junley4]

News of another successful update via OCLP.
iMac 12,2 with Quadro K3100M.
From 11.2.3 to 11.3 update went smoothly just like what supported macs do - this is insanely great!

Screen flickering on max brightness still persists but screen is great with upto 75% brightness and it is way better than what I have with Patched Sur which was I think only arounf 50% or 60% max brightness.

Another thing I noticed in disk utility is the presence of another container (com.apple.os.update...) inside my boot partition. It shows as a system snapshot. Is it normal?