Sequoia latest update wreaking havoc on system

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Level 1

19 points

Sequoia latest update wreaking havoc on system

I have just updated my otherwise trusty Mac computer to Sequoia 15.0.1, and am now dealing with a host of new problems right and left on my system. Can you help?

The most glaring symptom is that immediately after the 15.0.1 update, half of my computer's screen became "grayed over" — that is, covered with a block of horizontal lines that did not exist before the update. The block of lines move up and down slightly and flicker a bit.

Please see attached screenshot for details. (I did try taking a screenshot directly from my Mac internally, but this block of horizontal lines does not appear at all on the computer's own internal screenshots. Thus, my taking of this photo with my iPhone externally.)

The block of lines you see in the screenshot do not seem to be interfering with the actual functioning of the computer — I can still do tasks on my Mac computer "under" the block of horizontal lines. But this is definitely not normal and I need to resolve this major problem.

There are a host of other side issues I am trying to deal with as well, like plugging up leaks in a sinking boat: a noticeable lag in the computer's operation, network connection issues, Time Machine backup issues and even the inability to run Apple diagnostics or enter into safe mode online. They all started up right after updating to Sequoia 15.0.1.

What could be the problem here with the display/screen and how can I begin to fix this? Desperately in search of answers here.

iMac (M1, 2021)

Posted on Oct 4, 2024 6:56 AM

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Answer 1

Top-ranking reply

horacenalle

Level 1

9 points

Oct 7, 2024 12:46 PM in response to tonykaku

My MacBook has been rendered useless by Sequoia. Can I uninstall it?

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Answer 2

Oct 7, 2024 4:58 PM in response to tonykaku

My Macbook pro 2019(intel) stopped charging exactly after MacOs 15.1 and both the ports aren't working. Visited Apple store and they have mentioned its a hardware issue and parts need to be replaced. Personally I'm pretty sure it happened due to OS update but there's no way I can prove it and Apple isn't taking responsibility.

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Answer 3

Nov 3, 2024 7:42 PM in response to tonykaku

I upgraded my 16” MacBook Pro from macOS Sonoma to Sequoia a week ago (today is Nov 3, 2024). Immediately after the update, I couldn't log in because my keyboard stopped responding. I took it to the Apple Store, where I was told the keyboard is bad—a hardware issue—and that I’d need to pay $698 for a replacement. I pointed out that even the on-screen keyboard didn’t register key presses from the trackpad, but they seemed unsure how to respond and suggested the trackpad might also be faulty. It was alarming how they insisted it was a hardware issue, claiming the update had no connection to the problem and that my "S" key was damaged. ( it's not!!!) In reality, my MacBook was in perfect condition and functioning flawlessly before the Sequoia update, with no sign of any hardware issues.

After returning home, I contacted AppleCare to arrange for a repair. While troubleshooting, I discovered that pressing Option + Command + R at startup restored keyboard functionality temporarily, which was a relief. All the keys functioned perfectly, and the MacBook began running smoothly. It worked fine for about 3 hours, but then began experiencing keybord glitches and prompted me to upgrade to Sequoia 15.1. Unfortunately, after the update, my MacBook stopped recognizing the keyboard altogether and wouldn’t enter recovery mode, leaving it unusable. Pressing Option + Command + R at startup temporarily restores keyboard functionality. However, the fix only lasts for a short period before the issue reappears.

Also, since updating my Mac to Sequoia, it has started restarting on its own after shutting down.

My MacBook Pro is 2019 16" 16 GB RAM, 1TB. Never had any issues.

It feels as though Apple products are lasting shorter with each new purchase, seemingly reliable only as long as AppleCare is active. The balance between cost and reliability of Apple products has shifted so dramatically that staying with them no longer seems worthwhile.

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Answer 4

Oct 28, 2024 9:13 AM in response to tonykaku

Hi everyone,

My M2 MacBook Air 16 GB started lagging after this update. Scrolling, hovering, selecting stuff started to be a nightmare. Always have to reboot and then it works, but after not using it for a while it then starts lagging again and needs another restart. Is anyone experiencing similar problems? Any fixes coming? Hate that.

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Answer 5

HWTech

Level 9

60,560 points

Oct 4, 2024 10:26 PM in response to tonykaku

Usually if a screenshot does not show the graphical glitch, then it means the problem is a hardware issue with the LCD Panel. However, in this case with flickering video there is a chance a screenshot could possibly take a snapshot in between the flashes & capture a perfect image. Try a screen recording using QuickTime Player. View the Screen Recording on another device or display to see if it shows up there as well. If the issue is not shown by the screen recording, then you have confirmed a hardware issue with the LCD Panel (or possibly internal display cable).

How to record the screen on your Mac - Apple Support

If you have a 2021 iMac as shown in your signature profile, then you could try reinstalling macOS 14.x Sonoma (requires a clean install by first erasing the disk or rather deleting the "Volume Group" followed by installing Sonoma & restoring from a backup).

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Answer 6

PRP_53

Level 10

91,759 points

Oct 5, 2024 3:19 AM in response to tonykaku

There are reports Elsewhere regarding the Original M1 iMacs having this type Display issue

https://www.macrumors.com/2024/10/01/m1-imac-horizontal-lines-issue/

Solution are unknown at this time

To be constructive 🤞

Start now and open an Apple Support Ticket as they are PAID Apple Employees to deal will these types of issues .

Product Feedback - and make it known to Apple regarding this ongoing issue

Have the computer evaluated by the Professionals who have the Special Hardware Software and Expertise to diagnose the issue and offer possible solutions

Make an Appointment at the Apple Genius Bar or call 1 800 MyApple and have them evaluate the computer

Other location Call Centres

Contact Apple for support and service

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Answer 7

Nov 1, 2024 8:19 AM in response to tonykaku

My battery is suddenly not charging anymore through any port! It was working fine right before the update.

I am almost out of battery. While plugged in, it shows that I am plugged in to a power source but i see a message that says not charging.

At this rate, I can’t even revert back to anything

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Answer 8

Nov 20, 2024 12:17 PM in response to tonykaku

I bought a brand new Mac Mini Pro and Studio Display two weeks ago. The monitor arrived DOA and had to be replaced. The new one arrived, plugged in the Mini, restored a backup from my iMac. All was well, until I clicked on the waiting OS update. The Mini was totally borked--no boot, no recovery screen, nothing. I sent both of them back for a refund. Maybe I'll buy the set again in six months, after they have fixed some bugs. What. The. Heck.

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Answer 9

HWTech

Level 9

60,560 points

Oct 7, 2024 6:21 PM in response to horacenalle

horacenalle wrote:

My MacBook has been rendered useless by Sequoia. Can I uninstall it?

If your laptop had an older version of macOS before, then you can perform a clean install of macOS by erasing the disk (or rather deleting the "Volume Group") followed by reinstalling macOS & restoring from a backup. How you do this varies by the exact model of the Mac.

Use Disk Utility to erase an Intel-based Mac - Apple Support

Use Disk Utility to erase a Mac with Apple silicon - Apple Support

Creating & using a bootable macOS USB installer may be needed to reinstall a specific version of macOS (the OS must be compatible with your specific model Mac):

Create a bootable installer for macOS - Apple Support

With a 2018-2020 Intel Mac using the T2 security chip requires first modifying the system security settings using the Startup Security Utility to allow booting from USB:

About Startup Security Utility on a Mac with the Apple T2 Security Chip - Apple Support

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Answer 10

tonykaku Author

Level 1

19 points

Oct 12, 2024 2:57 AM in response to tonykaku

As promised, here is an update on the current situation with my Apple computer (macOS Sequoia 15.0.1) as described in my initial posting here of about a week ago, "Sequoia latest update wreaking havoc on system".

I originally thought the problem I was having with the horizontal lines covering the screen was an update-related issue. The two may be related, but as far as Apple itself is concerned, it was an LCD display issue — not an update issue.

I had sent my Mac off to Apple Japan a few days ago and my computer came back today fully repaired and functional. As of today, the horizontal lines are gone and everything seems to be working smoothly. The Apple invoice I received confirms the repair was of an LCD display issue — the very same kind, in fact, that many other owners of the same iMac M1 2021 model have been having in various countries two years after purchasing their computer.

If you are encountering these same kinds of horizontal lines on your Mac screen, as I was, have a look at this thread here on the Apple community forums from last year: "Persistent horizontal lines appear on iMac screen". This was very helpful for me and many other Mac users in understanding the cause of the problem and taking steps to deal with it. I hope it helps you too.

So, for now, consider this particular problem with my iMac resolved. Many thanks to all who shared their advice and guidance on my initial posting. It was very much appreciated.

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Answer 11

tonykaku Author

Level 1

19 points

Oct 7, 2024 6:19 AM in response to PRP_53

PRP_53 — Thanks very much for the follow-up. Your post was extremely helpful and confirms that I am not alone in having this particular problem with an iMac M1 2021 model, which I bought here in Japan three years ago. It seems many other people in various parts of the world having been experiencing the exact same problem with this exact same model of Mac computer.

You have pointed me in the right direction about seeking help from here, and I can only hope that Apple Japan will consider repairing this defect at little or no charge. Apple Japan does not have a very good past record of being helpful on matters like this, but I will pursue and persist just as others have done in getting this LCD Panel defect addressed.

I will post the eventual outcome of this case, either way, here in the near future.

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Answer 12

HWTech

Level 9

60,560 points

Oct 7, 2024 6:54 PM in response to Ree28Apple

Ree28Apple wrote:

My Macbook pro 2019(intel) stopped charging exactly after MacOs 15.1 and both the ports aren't working. Visited Apple store and they have mentioned its a hardware issue and parts need to be replaced. Personally I'm pretty sure it happened due to OS update but there's no way I can prove it and Apple isn't taking responsibility.

A macOS 15.1 update could not have caused any damage because there is no public release of macOS 15.1 yet. macOS is only at 15.0.1. Plus it is against Apple's rules to discuss any Apple beta software on this forum. If you have used a beta OS, then if anything breaks that is part of the agreement since beta software is still undergoing development & testing....use at your own risk.

Besides Apple's Diagnostics may be able to confirm a hardware failure (if the diagnostic finds a problem, then you have a hardware issue). Or if the charging issue occurs outside of macOS Sequoia, then it is not a Sequoia specific issue.

FYI, the 2019 model laptops (especially the 16" model) do have a much higher rate of Logic Board failures than any other model.

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Answer 13

Nov 12, 2024 1:13 AM in response to tonykaku

a host of websites are not accessibele anymore, prodcing messages like:Access Denied

You don't have permission to access "http://www.ziggogo.tv/nl.html" on this server.

Reference #18.4fc816c3.1731402566.3a27090a

https://errors.edgesuite.net/18.4fc816c3.1731402566.3a27090a

Also downloads from FTP servers seem to block: So my advise: DO NOT INSTALL this update!!!!

[Re-Titled By Moderator]

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Answer 14

Nov 18, 2024 1:16 AM in response to tonykaku

My macbook pro 2020 was running great before I downloaded Os 15.1 Sequoia. Now I cannot bin un-necessary applications, my mac does not recognise any bluetooth items nor hard plug of headphones ect.

I had a few issues n bugs with previous os dl / uploads. But nothing on this scale. If it is not sorted soon I will be buying a new Microsoft pc!

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Answer 15

Nov 18, 2024 10:11 AM in response to tonykaku

It's happening to me too. The hard drive was indexing for DAYS. The process was slowed because it would be delayed in Sleep Mode. I finally went into Battery > Options > "prevent automatic sleeping"

According to Activity Monitor, Indexing monopolized 90% of CPU.

I think the drive has calmed down, but with the advent of Apple Intelligence, 4.91GB is now held hostage. I consented to try it, then noticed serious lag, so turned it off but the data still lives on the drive.

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