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macOS 15 Sequoia on Unsupported Macs Thread

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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
I've tried open core legacy patcher on a macbook pro 13" 2015" with 16gbs of ram, and while it's still usable the experience for me wasn't worth it: slow app startup, unusable system preferences (panels are really slow to load, slugginess on scroll), desktop wallpaper that takes several seconds to load, painfully slow notification/widgets center and fans almost always spinning. Are those issues Sequoia related or OCLP related?

FYI I've applied post install patches a couple of times and now I've reverted back to Monterey
 
Wickintime said:
I have a 2012 iMac 13.1 currently Open Core 2.1.2 and happily running Sequoia 15.1.1. Its has 16GB RAM and a 500GB ssd. However the SSD is nearly full and I need to extend my use of this machine for another couple of years. My plan is to clone the current SSD onto a 1TB one, open up the case and replace the internal one.

Is there software that would let me clone the SSD to make this substitution or has Open Core compromised that?
Click to expand...
My 2012 27 Imac 13.2 had a failed GPU, when I took it to the repair shop he said because the screen was glued to the case he did not want to try repairing. I bought a late 2015 27 inch 5k Imac for 300. and an external SSD for 60. I had been thinking about running the latest OCLP/SEQ combo on an external SSD and now I am happy with the internal HD being a TM backup and the External SSD running more smoothly and less headaches than I had in the past. I know they can be paired, but at what cost.
 
Mystere65 said:
With Sonoma you should have no problems, Sequoia is a leap in the dark and we don't know yet where it will take us (see Safari 18.2 AVX 2), my iMac 14,1 (2013) works well anyway.
With OCLP you have to find the best compromise based on the machine you have.
Click to expand...

sonoma failed me twice so i am here now. hopefully seq will be better as i assume most developers will be working on it as it is the most current version
 
SwiftUI/UIKit Framework Issue with Shapr3D on Mac Pro 5,1 under macOS Sonoma

I'm running into an interesting issue that might be related to modern UI frameworks on legacy hardware. Here are the details:

System:
- Mac Pro 5,1
- macOS Sonoma 15.1.1 via OCLP
- AMD RX 590 with confirmed Metal 2 support
- Clean system installation with latest OCLP patches

Issue:
I've discovered that Shapr3D v5.521.0 is the last version that works perfectly, while the current version (5.760.0) crashes immediately. Through debugging, I found that the crash is related to UIKit/SwiftUI framework compatibility:

Error message:
Symbol not found: \_$s10UIViewType7SwiftUI0A13RepresentablePTl
Referenced from: /Applications/Shapr3D.app/Contents/MacOS/Shapr3D
Expected in: /System/Library/Frameworks/SwiftUI.framework/Versions/A/SwiftUI

What I've tried:
1. Various Metal configurations (all confirmed working with other apps)
2. OpenGL compatibility mode (works with old version)
3. Different launch parameters and environment variables
4. Fresh system install

Key observations:
- Metal 2 support is working perfectly (verified through system profiler)
- Night Shift and other GPU-dependent features work fine
- The old version (5.521.0) works without issues on the latest System version
- The latest version of Shapr3D does not work on older system versions from the time it worked
- The main difference seems to be UIKit/SwiftUI implementation between versions

Question:
Is there a way to patch or enable modern UIKit/SwiftUI framework support for this hardware? The app itself works fine on the older version, suggesting it's not a hardware performance issue but rather a framework compatibility problem.

Any insights or suggestions would be greatly appreciated.
Thanks, Axel

p.s.: interestingly Shapr3D works on my other legacy Macs (configuration in signature)
 
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I initially had no issues with Sequoia on my iMac 14,1 (2013), but today, out of nowhere, the desktop icons began flickering. After a reboot, the wallpaper disappeared—along with all system settings. It was impossible to access any system settings whatsoever, and Disk Utility didn’t offer a solution either. Despite this, everything else seemed to work normally.
In the end, I had to reinstall Sequoia through recovery mode. Now, it’s a matter of waiting to see if the reinstallation resolves the issue or if I’ll need to downgrade back to Sonoma.
 
Alfilde said:
In the end, I had to reinstall Sequoia through recovery mode. Now, it’s a matter of waiting to see if the reinstallation resolves the issue
Click to expand...
And it didn't help..... the wallpaper is still missing as well as the systemsettings...
Screenshot 2024-12-05 at 18.28.54.png

Screenshot 2024-12-05 at 17.36.27.png
Screenshot 2024-12-05 at 18.21.34.png
Screenshot 2024-12-05 at 18.26.04.png


Any ideas?
 
ronton3 said:
My 2012 27 Imac 13.2 had a failed GPU, when I took it to the repair shop he said because the screen was glued to the case he did not want to try repairing. I bought a late 2015 27 inch 5k Imac for 300. and an external SSD for 60. I had been thinking about running the latest OCLP/SEQ combo on an external SSD and now I am happy with the internal HD being a TM backup and the External SSD running more smoothly and less headaches than I had in the past. I know they can be paired, but at what cost.
Click to expand...
Hello, it is very easy to open a 2012 Mac. Watch a tutorial on a the site ifixif or Youtub. We know the GPU problème on this IMAC. You have to raise the temperature of the welds with a soldering station but it is possible with an oven.(It is possible to find a GPU card on a Chinese site). I have been doing this for several years without any problems.
 
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TOM1211 said:
update to 15.2 (24C98) after reverting patches from previous beta came in at 1.02gb all went fine on my MacBook Pro 2014 no issues everything seems to function normally OCLP 2.1.2.
Click to expand...
May I ask if you see good speed over Wifi ? Does iCloud work 100%? Safari favourites? Thanks.
 
Is Wi-Fi speed a known issue with Sequoia and or OCLP? I have noticed on one machine a lot of variability and not due to network issues. It can go from 400 mbps down to 6 mbps in a few minutes. Only a restart fixes it, temporarily. This is on 15.1.1 and OCLP 2.1.2
 
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Thanks. I think it was fine on Sonoma. Since "upgrading", I have seen this variability. I guess we will see what 15.2, 15.3 or 15.4 brings... 6 Mbps down is totally unacceptable on a 1.2 gbps down internet connection.:(

Why did Apple have to mess with the Wi-Fi on Sequoia? Sonoma was fine.
 
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xlw108 said:
SwiftUI/UIKit Framework Issue with Shapr3D on Mac Pro 5,1 under macOS Sonoma

I'm running into an interesting issue that might be related to modern UI frameworks on legacy hardware. Here are the details:

System:
- Mac Pro 5,1
- macOS Sonoma 15.1.1 via OCLP
- AMD RX 590 with confirmed Metal 2 support
- Clean system installation with latest OCLP patches

Issue:
I've discovered that Shapr3D v5.521.0 is the last version that works perfectly, while the current version (5.760.0) crashes immediately. Through debugging, I found that the crash is related to UIKit/SwiftUI framework compatibility:

Error message:
Symbol not found: \_$s10UIViewType7SwiftUI0A13RepresentablePTl
Referenced from: /Applications/Shapr3D.app/Contents/MacOS/Shapr3D
Expected in: /System/Library/Frameworks/SwiftUI.framework/Versions/A/SwiftUI

What I've tried:
1. Various Metal configurations (all confirmed working with other apps)
2. OpenGL compatibility mode (works with old version)
3. Different launch parameters and environment variables
4. Fresh system install

Key observations:
- Metal 2 support is working perfectly (verified through system profiler)
- Night Shift and other GPU-dependent features work fine
- The old version (5.521.0) works without issues on the latest System version
- The latest version of Shapr3D does not work on older system versions from the time it worked
- The main difference seems to be UIKit/SwiftUI implementation between versions

Question:
Is there a way to patch or enable modern UIKit/SwiftUI framework support for this hardware? The app itself works fine on the older version, suggesting it's not a hardware performance issue but rather a framework compatibility problem.

Any insights or suggestions would be greatly appreciated.
Thanks, Axel

p.s.: interestingly Shapr3D works on my other legacy Macs (configuration in signature)
Click to expand...
Since it works on your other Macs, which are all on Haswell based CPUs, it may indicate a possiblity that the newer version is using AVX/AVX2. If that is the case, it is unfixable. Oldest CPUs with AVX are Sandy Bridge, Haswell for AVX2. I can't tell for sure but many old Macs (and PCs) are starting to age now with more and more applications moving to AVX2.

The GPU drivers for Polaris in fact require AVX2 since Ventura and that is the reason why downgraded drivers are needed for them to work on the Mac Pros, otherwise the GPUs would be fully native and wouldn't need root patching. Now it could of course also be an issue with these downgraded drivers, e.g. some incompatibility or a lacking feature.
 
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macamazing said:
Thanks. I think it was fine on Sonoma. Since "upgrading", I have seen this variability. I guess we will see what 15.2, 15.3 or 15.4 brings... 6 Mbps down is totally unacceptable on a 1.2 gbps down internet connection.:(

Why did Apple have to mess with the Wi-Fi on Sequoia? Sonoma was fine.
Click to expand...
Probably not an Apple issue. At least I have so far not seen such issues on supported non-OCLP Macs, but maybe there are.
 
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houser said:
May I ask if you see good speed over Wifi ? Does iCloud work 100%? Safari favourites? Thanks.
Click to expand...

Haven’t noticed any slow downs on wi-fi at all (but I don’t have the best broadband either so hasn’t been a issue for me could only dream of 70mb +) but it’s stable for me at my speed. iCloud might not sync bookmarks but iCloud Tabs works perfectly being the latest set of websites I’ve been to so could bookmark it from there also you could use a app like raindrop.io to bookmark and that works almost instantly between iPhone and Mac.
 
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TOM1211 said:
iCloud might not sync bookmarks but iCloud Tabs works perfectly being the latest set of websites
Click to expand...
Thanks for reply, appreciated. I saw the same issues last time I logged into the Sequoia partition and it is a no-go for me for various reasons and unstable network speed is the one that breaks it for me.
Sonoma has none of these issues FWIW so happy camper there but it would be nice if Seqouia can be tweaked also, for sure.
 
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hvds said:
Not the public release yet? but must be close
Click to expand...
BetaWiki says Release Candidate. Installed and running OK on a supported Mac mini 8,1 2018

I will wait until it goes final and Dortania have had time to test against it and issue a new public release of OCLP before installing it on an unsupported rMBP 10,1 2012. That seems to be the safest workflow, for me anyway.

I always get impatient though...
 
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