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Macbook Pro M3 Max with Dell u4025QW - Frequent Kernel Panics

I recently purchased a new 14" MacBook Pro M3 Max and simultaneously purchased a Dell U4025QW monitor. My Mac is powered by the monitor's Thunderbolt cable.


My Mac periodically restarts when left alone for long enough to go into sleep mode. I cannot figure out a pattern to it, and this happens both when no applications are open and also when many apps are left open in the background. The restart appears random ... some days, the Mac will restart each time when left alone for long periods. Other time, the Mac will run for a few days without any issue. The only thing I think (and I say "think" because I'm not 100% certain) I've determined is that the kernel panic-related restarts are associated with my Dell monitor. I believe in this correlation because over a few day period where I unplugged the Mac from the monitor whenever I would leave it long enough for the Mac to sleep, the Mac experienced no kernel panics. The absence of a restart strongly suggests that the Dell monitor is causing the kernel panics.


I contacted Dell about this issue, which began after I updated the new monitor with the latest firmware (M3T103). Dell told me that they discovered a bug in this latest firmware, and promptly sent me a replacement monitor, which has M3T102 installed. While I applaud Dell's customer service, I'm a little skeptical that they were telling me the truth since M3T103 is still posted on their website for download. Further, now with a replacement monitor running M3T102, the Kernel panics have continued.


I ran an EtreCheck Pro report, but unfortunately, the report tells me nothing other than this is likely a hardware related problem, and that the test I've already done (removing the USB-C Thunderbolt cable when the Mac is going to sleep) does appear to confirm this is a problem stemming from the connection between my Mac and the Dell.


I love this monitor ... perfect size for me. But this frequent restarting isn't sustainable. I've only had the computer and monitor for about six weeks and I'd say I've experienced this issue more than a dozen times already.


Anything someone can suggest?


Much appreciated.


- David

MacBook Pro 14″

Posted on Nov 16, 2024 1:48 PM

Reply
16 replies

Nov 21, 2024 5:24 AM in response to David Kohl

A few updates:


  1. I ran a four night test with my Macbook Air M2 (my second laptop). The Macbook Air did not have any restart issues.
  2. I ran a two night test with my MBP M3 Max (the problem laptop) where I plugged in power using the original Mac Magsafe power cable and ran an HDMI cable to the Dell monitor. The laptop did not restart.
  3. I am now going to attempt to run the MBP with the Thunderbolt cable + the Magsafe cable. I'm not sure exactly what I'm trying to prove on this last test, but I figured it'll at least help isolate.



In addition to these tests, I contacted support. They provided two requirements before they would consider my MBP for a swap.


1. Determine if the issue is account-specific:

    • Log out of the current user account and create a new test user profile.
    • Replicate the issue under the test profile. If the problem persists, it can likely be ruled out as an account-specific issue.

2. Check if the issue is system-wide:

    • Restore the MacBook to factory settings, reinstall the operating system, and set it up without using a backup.
    • If the issue persists after this clean setup, it effectively rules out hardware as the cause.


Test #1 is easy. After a few more nights on the Magsafe + Thunderbolt setup, pending outcome I'll create a new account and swap to that account each night before leaving the Mac to sleep.


Test #2, however, I find problematic for two reasons.

  1. It is just incredibly time consuming. I have dozens of applications on my MBP, many of which have custom settings and all sorts of data files. I currently have 1.3 TB of applications and data on my Mac. I already back up using iDrive, but the manual re-creation of my Mac will take days.
  2. I would need to leave the computer clean (without restoring) for at least a week or two to truly isolate this as the issue. The restart problem is intermittent. It happened almost nightly on the first Dell monitor. But after Dell sent me the second monitor (which remains on the older firmware), I used the monitor for two weeks before the first restart.



I already know the Mac does NOT restart when NOT connected to the Dell. Thus, this is definitely an issue with the Mac and the Dell. The problem is, I don't know whether its a Dell issue (e.g., firmware incompatibility) or a Mac issue (a hardware issue that only occurs when connected to an external monitor with Thunderbolt power).


Appreciate any additional input.


- David

Nov 17, 2024 8:01 AM in response to David Kohl

Your situation is very complicated.


Data abort says that when data was being read or written (and every read or write is through the cache) a Hardware error occurred. The saved instances all point back to windowserver.


What you would LIKE to do, is take you Mac to Apple and tell them it has a Hardware error. But to get the Genius Bar to listen, it has to:

• fail the diagnostic or

•. cause an unmistakable hardware problem on demand. They are nit trained to read reports and logs.


that leaves you talking to Apple support. when the first responders look at this, they have two responses:

first, it must be third-party software.

second: they are not trained to read reposts and log either, so ONLY a specialist can help. You have to push to get them to have a specialist contact you.


Along the way, you still have to deflect their first complaint, that it must be third-paty software that did this. There are two ways to accomplish that, and it may eventually take BOTH to convince them.


Before you proceed, you need to go get a full panic report, and post the first part of it on the forums to have a permeant record that everyone (including support) can refer to. I will post the procedure in next post.


continuing on with the main process, the two ways are


First, to restart and run in Safe Mode, where almost NO third-party add-on are loaded. if you can get the problem to occur in safe mode, you are almost home.


Second, (which should only be required in extreme cases) is to re-install ONLY MacOS, and no third part packages or add-ons whatsoever. Typically this means ERASING the MacOS Volume before you re-install. This process may wipe out your stored panic reports, so before you do that extreme step, use the procedure in the next post to set aside a panic report, and save it to the forum.



Nov 17, 2024 7:53 AM in response to David Kohl

Kernel Panic Reports are stored in the Folder at:

/Library/Logs/DiagnosticReports


If you copy and paste that string into:

Finder > Go menu > Go to Folder


it will take you to the Folder where those reports are stored.


Kernel panic reports are named with Date&Time and start or end in ‘panic’

If you find one, please post as much as you can here, by using the “additional text” Icon in the reply footer (looks like a paper with writing). (Once the report devolves into incessant software-names or incessant Base-64 dumps with lots of AAAAAA lines, you are done.)


Please don’t post more about 20 lines of any other types of reports — they are interminable, and any information useful for this purpose is on the first screenful.


If you post your kernel panic here in its entirety, using the additional text icon in the reply footer, we do have some Readers (typically with developer background) who can attempt to interpret those panic reports. Even if no clear symptom emerges, this can still save a step if you DO need to contact Apple support later, because Apple Support specialists can read the panic reports you posted here, if you tell them what discussion or what Avatar.


Nov 17, 2024 1:17 PM in response to a brody

Mr. Brody -


The first panic was actually in late October shortly after upgrading the Dell Firmware on the first of the two monitors. After I received the replacement monitor on about Nov 7, I experienced no panic restarts again until 11/15 ... thus seven days without an issue. Very strange indeed.


Regarding iMovie, the app store automatically updated that software on 11/15. Prior to 11/15, the software was also up-to-date with whatever the prior version was.

Nov 17, 2024 3:48 PM in response to David Kohl

Does the kernel panic ever happen when the Dell is not connected?

Have you tried connecting different cables to the Dell?

Have you tried connecting the Dell to different ports on the Mac?

Have you made sure the Dell has its own source of power?

Does the panic happen when the Finder is the only apparent running application?

Is put drives to sleep unchecked in System Settings for Power management/Energy Saver?


Do you have enough room on your hard drive to see if an copy of Sonoma can be put on a separate partition with no added plugins, drivers, or added software, to see if it is specific to how Sonoma reacts to the Dell's firmware?


Is there a reproducible set of steps to get the panic to happen?

Nov 18, 2024 8:00 AM in response to Grant Bennet-Alder

For the record, I disconnected the Thunderbolt connection between the Macbook and Dell monitor and instead connected via HDMI. At least last night, I did not experience a restart. I plan to use the Mac this way for a few days.


If the Mac does not experience any more panic restarts, does this suggest a problem with my Macbook or a problem with the Dell monitor's compatibility with the Macbook? And do you suspect a detailed read of the reports will get us to this conclusion? I ask because I don't want to go through the lengthy hassle of replacing my Macbook Pro only to find the same issue once I've re-connected it to the Dell monitor.

Nov 18, 2024 8:29 AM in response to David Kohl

The problem listed in your panic reports suggests a hardware problem inside your Mac, NOT a software issue, NOT a "compatibility problem", not some sort of performance problem.


The HDMI interface is comparable to the other display interfaces, and my expectation is that this connection will be no better, and likely no different.

Nov 21, 2024 7:28 AM in response to David Kohl

I suggest you do the best you can reasonably do to comply, and try to convince your apple specialists what a burden this is, just as you have quitter above.


You now have a terse, well organized statement about why it is so hard for you to comply.


[in my opinion] the panics you showed could not have been caused by any ordinary software issues.


Have they provided a specialist who has read your reports? If not, try to insist on a specialist who can read those reports.

Macbook Pro M3 Max with Dell u4025QW - Frequent Kernel Panics

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