macOS 15 Sequoia on Unsupported Macs Thread

[OKonnel]

Have you tried resetting SMC<NVAM, restarting in safe mode, then reverting patches and installing the latest nightly, then installing 15.5, then repatching. My Imac is running better than ever before with n and 15.5, before that I had various problems with 15.4b's.

Hi @ronton3! What iMac do you have? If you have a Kepler series nVidia graphics card can you check for me, kindly, if the Histogram in Preview.app works with 15.5 and if the "Auto Levels" button is the two sliders at the ends of the Histogram make the open image disappear as soon as we touch them? Thanks

By now I am almost convinced to go back to Sonoma, but if Preview had started working well again with macOS 15.5 beta I might decide to stay with Sequoia.
It's not just of Histogram since today I discovered that in exporting eight photos in HEIC format to JPG format, Preview corrupted some JPGs (strangely, their preview icon did not appear) and Photoshop did not recognize them.

So I become more and more convinced that Sonoma will remain the last system best suited for our Intels. Especially since Sequoia, in exchange for instability, fans in action, etc., offers few more things than Sonoma, and the only ones I have in mind are the two ugly dynamic backgrounds that don't work with Kepler series cards and the Password app that is much-hyped but adds nothing to how it has worked so far, with the older macOSs, nor can it compete with the fabulous completeness of 1Password to which I have subscribed for many years.
And about the Categories in Mail... first I didn't understand where they were and then I didn't understand whether I can sort them into columns in my own way, whether I can rename them, and whether I can make other customizations. After that, this new feature neither adds nor detracts from Mail even if it is less dangerous than the delay in sending e-mail introduced with Sonoma... More than once, in fact, in my haste to get out, I have put my Mac to sleep after sending an e-mail and failed to remember to wait 30 seconds for the message to start...
In short... whistles and bells or, as they say in Italy, all smoke and no meat 😂

 

[oraculo666]

Finally decided to downgrade to Sonoma. Considerably better experience on my Mac. Things work faster, cooler and sometimes simply work. I'll be keeping an eye on Sequoia OCLP development.

 

[ronton3]

Hi @ronton3! What iMac do you have? If you have a Kepler series nVidia graphics card can you check for me, kindly, if the Histogram in Preview.app works with 15.5 and if the "Auto Levels" button is the two sliders at the ends of the Histogram make the open image disappear as soon as we touch them? Thanks

By now I am almost convinced to go back to Sonoma, but if Preview had started working well again with macOS 15.5 beta I might decide to stay with Sequoia.
It's not just of Histogram since today I discovered that in exporting eight photos in HEIC format to JPG format, Preview corrupted some JPGs (strangely, their preview icon did not appear) and Photoshop did not recognize them.

So I become more and more convinced that Sonoma will remain the last system best suited for our Intels. Especially since Sequoia, in exchange for instability, fans in action, etc., offers few more things than Sonoma, and the only ones I have in mind are the two ugly dynamic backgrounds that don't work with Kepler series cards and the Password app that is much-hyped but adds nothing to how it has worked so far, with the older macOSs, nor can it compete with the fabulous completeness of 1Password to which I have subscribed for many years.
And about the Categories in Mail... first I didn't understand where they were and then I didn't understand whether I can sort them into columns in my own way, whether I can rename them, and whether I can make other customizations. After that, this new feature neither adds nor detracts from Mail even if it is less dangerous than the delay in sending e-mail introduced with Sonoma... More than once, in fact, in my haste to get out, I have put my Mac to sleep after sending an e-mail and failed to remember to wait 30 seconds for the message to start...
In short... whistles and bells or, as they say in Italy, all smoke and no meat 😂

I have a Late 2015 K5, 27Imac. Preview takes several seconds to open, but then is quick, I rarely use it and am not familiar with how histogram or photoshop work. I believe the 2015 is beyond Kepler, also the backgrounds work just fine. I simply turned the mail categories off. Sorry I could not be more helpful.

 

[David403]

Have you tried resetting SMC<NVAM, restarting in safe mode, then reverting patches and installing the latest nightly, then installing 15.5, then repatching. My Imac is running better than ever before with n and 15.5, before that I had various problems with 15.4b's.

Thanks for the suggestions. I am trying a simple re-install over the top of the existing Sequoia 15.4 first and then will try what you suggested if it doesn't work, I will try going back to Sonoma.

 

[MacRumors3590]

Thanks for the suggestions. I am trying a simple re-install over the top of the existing Sequoia 15.4 first and then will try what you suggested if it doesn't work, I will try going back to Sonoma.

I have (5) 5,1 machines and they all work great with 15.4. See my sig.
I would simply Backup your data and do a clean fresh install after formatting the disk.
cheers

 

[xlw108]

Hi everyone,

I just downloaded the latest update of WhatsApp Desktop from the Mac App Store and was delighted to find that the program starts and works again on my MacPro3,1!


View attachment 2500458
This can mean two things: The program no longer needs AVX2 compatibility or it was simply another bug, now fixed, that was preventing the program from launching.

Anyone who had the same problems on their vintage Macs should give the update a try!

Yes I had the same issue and had to use the web version of WhatsApp for a while. Since the latest update of Whatsapp the desktop app now works again. If the reason is AVX2 or another bug I don't know. It did work on my MacBook Pro and Air (specs see signature) which hints towards AVX2 incompatability.

 

[Neon Ball]

Yes I had the same issue and had to use the web version of WhatsApp for a while. Since the latest update of Whatsapp the desktop app now works again. If the reason is AVX2 or another bug I don't know. It did work on my MacBook Pro and Air (specs see signature) which hints towards AVX2 incompatability.

It was AVX2, it seems they might've accidentally compiled on AVX2 and fixed it because they also broke it on Big Sur for native machines despite claiming they still support Big Sur. However it might be possible it happens again in the future.

 

[MacinMan]

I have a Late 2015 K5, 27Imac. Preview takes several seconds to open, but then is quick, I rarely use it and am not familiar with how histogram or photoshop work. I believe the 2015 is beyond Kepler, also the backgrounds work just fine. I simply turned the mail categories off. Sorry I could not be more helpful.

Preview remains the same as it was under Monterey for me on this iMac. I haven't tried the editing tools as I never used Preview for that on a supported OS. I have the top tier standard configuration for the iMac 17,1 Apple sold before going public. 2TB Fusion drive, I upgraded the machine with 32 GB RAM Crucial from amazon to save money on RAM. My GPU is the Radeon R9-M395 with 2 GB VRAM. In following these threads for a while, I've noticed some of the issues others with a lower specked late 2015 27" iMac have, I don't seem to, or they are far less.

I know for me, my two biggest limitations on an OCLP install over native are:
DRM content in safari and downloaded content from Apple TV, and 3D acceleration in VMWare (which after Broadcom bought it, it's really worth using now). Beyond those two main things. Everything works as it should. My other main reason for wanting to stick with Monterey as long as possible was mainly for support reasons, if I ever needed to call apple, or another vendor of software I use, I would much rather be on a supported config.

 

[amaze1499]

2.3.2 was released several days ago? How is it?
Is it worth the potential hassle to upgrade from 2.2? Everything on 2.2 works fine for me, so I was thinking about not updated for like at least 1 year.

In my cases, like with so many others it was a no brainer to use it.