macos 15.8.1 will make macbook pro 2019 16 inc crash frequently

hello there, i just upgrade to macos 15.8.1 a few days ago, but i found my macbook pro 2019 will crash frequently. Once I plugged external monitor or use software like photoshop. the device will crash. And I checked the system log, it says error 408 for windowserver.

Posted on Oct 8, 2026 9:01 PM

Reply
Question marked as Top-ranking reply

Posted on Oct 9, 2026 6:46 PM

Please post several of those 30 Kernel Panic logs that are shown in the report. Kernel Panic logs are located in "/Library/Logs/DiagnosticReports" folder and possibly even the "Retired" subfolder. Kernel Panic log files usually contain "kernel" and/or "panic in their file names. Post several Kernel Panic logs here using the "Additional Text" icon which looks like a piece of paper on the forum editing toolbar.


13 replies
Question marked as Top-ranking reply

Oct 9, 2026 6:46 PM in response to douglasj88

Please post several of those 30 Kernel Panic logs that are shown in the report. Kernel Panic logs are located in "/Library/Logs/DiagnosticReports" folder and possibly even the "Retired" subfolder. Kernel Panic log files usually contain "kernel" and/or "panic in their file names. Post several Kernel Panic logs here using the "Additional Text" icon which looks like a piece of paper on the forum editing toolbar.


Oct 12, 2026 6:26 PM in response to douglasj88

douglasj88 wrote:
Any update?

Sorry about the delay. I had quickly looked at them on Friday, but didn't have any time to give them much thought.


Those are GPU Restart tailspin reports.....the third one is a bit different from the other two, but I've never seen this exact type of GPU Restart logs....I'm unable to gather anything useful from them.


Were there any logs in that folder or the Retired subfolder which had "kernel" and/or "panic" in their file names?


When you connect your external display.....are you connecting it directly to the laptop without using any adapters, hubs, or docks?


And are you using the USB port that is located near the center of the monitor between the two Display Port connectors? That is the only USB-C port on that display for transmitting video.


Apple has been changing how macOS communicates with external devices ever since Aug/Sept 2025 with the release of macOS 26.x Tahoe. However, it is possible Apple has backported some of those changes to later Sequoia releases. The change has resulted in needing to use higher grade cables for external devices.....especially for displays....and they should be less than one meter in length. Many times the cables which ship with a product are not high quality cables.


You can also try using another USB-C port....especially on the other side of the laptop to see if that makes any difference. Also try disconnecting all other external devices from the laptop & external display just in case one of them is causing a compatibility issue with that display.



As for your other software issues related to Adobe products, you should first follow @den.thed's excellent advice. If you still have issues with the Adobe software, then I do see a lot of other third party software listed in the report that could be a problem. I'm not familiar with many of those apps, so I don't know what they do or whether they could be a problem. Something unusual or unknown (to me) tends to flag it as a possible issue when someone is having a problem when nothing else seems to be the cause.


It is hard to say whether you have an actual hardware issue here (laptop or external display), or just a software issue, or perhaps a combination of the two. The easiest way to confirm whether their is a hardware issue is by testing the system with a clean installation of macOS without any third party software installed and without restoring from a backup. If you still get Kernel Panics under this very strict testing scenario, then you know that you have a hardware issue of some sort. This can be done either by using the "Erase All Content & Settings" option, or by installing macOS to an external USB3+ SSD & testing the laptop while booted from the external SSD.


With GPU related issues....this could be a hardware issue since the Adobe software is likely utilizing the GPU as is the external display. Unfortunately this MBPro 16" (2019) model laptop specifically does have a very high failure rate with the Logic Board for various issues including GPU related issues.

Oct 12, 2026 9:04 PM in response to douglasj88

If you do not currently have a backup to protect your data...?

Then I suggest that you make one ASAP using Time Machine, CarbonCopyCloner or SuperDuper.

Back up your Mac with Time Machine - Apple Support https://bombich.com/ https://www.shirt-pocket.com/



Your symptoms are starting to sound more like an overheating or burnt GPU, than a software problem.


You can clean out the dust and try replacing the thermal paste on the heat sync, but sadly that will not help if the GPU is burnt toast.


Unfortunately if the GPU is burnt and toasted, then that 2019 MacBook Pro 16" will require a very difficult to find replacement logic board.



This image came from > https://www.ifixit.com/Teardown/MacBook+Pro+16-Inch+2019+Teardown/128106


Oct 9, 2026 9:33 AM in response to douglasj88

1) The biggest problem, is that your internal storage drive is over full.

At least 10~20% of the drive space need to be free for smooth trouble free operation.

see > Free up storage space on Mac - Apple Support


2) The Gatekeeper Security is disabled.

see > Protect your Mac from malware - Apple Support

and > Safely open apps on your Mac - Apple Support


3) There is all sorts of junk-ware and other questionable app's installed on this Mac.

Uninstall Little Snitch, Mac Cleaner 4, Memory Cleaner as per the developers directions

Uninstall any other third-party software, that you are not using as per the developers directions.

see > Install and uninstall apps from the internet or a disc on Mac - Apple Support

and > Delete or uninstall apps on Mac - Apple Support

4) There is no Time Machine or other backup to fall back on.

see > Back up your Mac with Time Machine - Apple Support

and > https://bombich.com/ or > https://www.shirt-pocket.com/

Oct 12, 2026 7:22 PM in response to HWTech

Unfortunately, I tried all the ways except reinstalling because I have many data in that laptop. I'm a senior QA engineer, so I did a lot of test. If I don't connect external monitor, the laptop will also freeze once invoke the dedicated graphics card. Last night someone send me a location, I opened it,The screen will distorted. And if I lock the screen, the laptop will turn off. So I'm wondering the battery management and graphic card switching may damaged.

macos 15.8.1 will make macbook pro 2019 16 inc crash frequently

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.