Mac OS 10.15.4: Random restarts due to panic(cpu 1 caller

I want to confirm that after the upgrade to 10.15.6 i haven't had a single kernel panic, it has been a month an a half crash free, so i believe it got solved, even if nothing hints at the possibility in the Release Notes of 10.15.6.

My crashes were "void AppleEmbeddedPCIeUpLinkMgmt" and "x86 CPU CATERR detected".

Just an update on this issue from my perspective and final fix.

16" MacBook Pro with latest OS. Many reboots per week as others have noted.

I tried many of the suggestions here with reseting components, reinstalling the OS, etc, etc. None of which had a lasting effect. Finally got a ticket open with Apple through my company. Laptop spent 4 days at a local Apple authorized shop. They ran hardware diagnostics for 4 days and found nothing. Returned to me still randomly rebooting.

Then I had to ship the laptop back to my company IT group where they forwarded it to the local Apple repair facility in St Louis. After a week or so it appears that Apple replaced the system board and returned the laptop. Two weeks since and no reboots.

This definitely seems like an issue with the hardware on the 16" MacBook Pro anyway. Getting someone to do something about it seems to be the hardest part of the repair process.

MacBook Pro (16-inch, 2019)

2.3 GHz 8-core i9

16 GB

AMD Radeon Pro 5500M 4 GB

1TB

With the 10.15.4, my Macbook retarts everyday 3 or 4 times.

After I have disabled the "Automatic graphics switching", my Macbook runs perfectly in the past 40 Hours, without any annoying retarts! Hope this helps.

Finally decided to just call Apple and see what they would do for me. After sending it to them for repair, they replaced the logic board and touch ID. I’m not sure if it’s completely fixed yet so I will update after a few days of using it. I do have to say though… Apple customer service was really really good this time around. I had it back after only 3 days at no cost. If you’re having this problem and can still buy AppleCare, do it before your warranty runs out!

Ok, I I have deduced mine down to the following: I bought a Laci 2Big 8TB backup drive / dock from the Apple Store prior to upgrading to 10.15.4. My machine was able to remained docked via Thunderbolt 3, the Lacie 2Big all has a Displayport out for video. My CPU panic issue happens when the machine / macOS goes to sleep. There is something triggering this in 10.15.4 that was not there in 10.15.3. I left my machine plugged in all weekend, overnight and such, UNPLUGGED from the Lacie 2Big dock (Thunderbolt 3/Displayport video), and my machine is still up and running as I left it Friday 5/8. I am upset that items purchased from the Apple store cause these driver issues, I am torn between sending the Lacie 2Big dock back or waiting for Lacie AND Apple to get their sh*t together and fix the driver issues that macOS 10.15.4 is clearly having across a number of fronts from the replies here. There has been a pattern emerging with Apple, their hw and sw are no longer the gold standard of stability. Current Apple devices may very well be my last if these do not improve over their lifecycle.

I want to cautiously note that since the upgrade to 10.15.6 i no longer have any of the crashes:

• panic(cpu 0 caller 0xfffffff00c237b8c): "void AppleEmbeddedPCIeUpLinkMgmt::_linkInterruptAction(IOInterruptEventSource *, int): " "A link timeout has been seen after 650000 microseconds and 49999 iterations."
• panic(cpu 1 caller 0xfffffff00eb353dc): x86 CPU CATERR detected

I've upgraded ~10 days ago, but last week i used the macbook lightly as i was on vacation so i will definitely monitor it more, let's see.

Still working non-stop flawlessly after SMC reset for more than a month now.

That's not the whole panic log. Open the file, copy the text, and paste it into the Additional Text area (document icon).

You should be able to find the panic logs in /Library/Logs/DiagnosticReports/

The name will start with Kernel.

There should be a section titled "loaded kexts"

If there isn't a section like that, then no point in posting the log.

Do what louis suggested: download and run Etrecheck. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support  to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.

Copy the report

and use the Add Text button to include the report in your reply. How to use the Add Text Feature When Posting Large Amounts of Text, i.e. an Etrecheck Report

IMPORTANT:

Before running Etrecheck assign Full Disk Access to Etrecheck in the app's Privacy preference pane so that it can get additional information from the Console and log files for the report:

ALSO IMPORTANT:

Then we can examine the report and see if we can determine the root of the problem.

You could try some of these things. Since I did these, no more restarts:

• Disk utility: First aid on all disks.
• Restart in safe mode (hold shift key while booting up)
• Diagnostics: hold D key while booting.

Another suspected culprit might be external displays. Try using you notebook without them.

I turned off Auto adjust brightness on both external and internal displays.

Just to confirm, My freeze times have nothing to do with sleeping, I got it when I was working with the macbook pro. I have an external display though.

BUT what seems to be working so far, I did an SMC reset 2 days ago. No more restarts. Hopefully it sticks.

My view is to wait for an OS fix; This all started after 10.15.4 update and things just seemingly are random but for me it is always a kernel panic in the bridgeaudiod always the same where there is no watchdog checkin.

It is useless to bring it in for repair or try things with setting x or y. All you can do is wait. Just every time submit your crash report so the frequency is known and so raises the criticality. Other than that nothing you can do and wait for a fix. I have a brand new MacBook pro 2019 16" and after the 10.15.4 it is a total disaster with kernel panics. It is clearly an OS problem.

I have had the same error with my Macbook Air 2019 before this happens because your logic board in your macbook is faulty and your cpu is failing so send it to apple it costs nothing with warranty but otherwise it is 1,111 US or it is 1700 AUD dollars to repair. The name of this error is a Kernel Panic