Mac Mini crashing on sleep

Sorry, I haven’t read this whole thread, but it seems, these are the issues that are also discussed in this thread:

https://discussions.apple.com/thread/251244094?page=1

I’d like to sum up the results, we had collected so far:

• Troubles began with the installation of the Security Update 2020-002 and Safari 13.1
• Affected hardware: Mac mini 2018, iMac Pro and recent Mac Book Pro (hardware with Apple’s T2 Security Chip).
• Affected OS: High Sierra, Mojave, partly Catalina

Possible issues:

• no power supply on at least 1 Thunderbolt port (i.e. Mac mini ’18: TB-Bus 1, port next to HDMI)
• Kernel Panic through sleep or shut down commands, related to BridgeOS
• macOS crash when disconnecting an eGPU by the Disconnect command in the top bar eGPU menu
• some experience seemingly random restarts of their Macs with upcoming BridgeOS Kernel Panic Reports afterwards

The Security Update installed a Firmware Update for the T2 chip. This seems the reason, why the actual problems cannot be fixed by a re-installation of macOS: the new T2 firmware (build: 17P4263), located in a protected memory area of the T2 chip itself, will not be replaced with an older version during a fresh macOS installation.

The T2 chip holds the SMC, which is related to sleep and shut down.

The Security Update 2020-002 also installed changes to IOThunderboltFamily and Kernel, which might be the cause for the troubles with eGPU and failing power supply on 1 TB port.

Found solutions so far:

• To avoid the sleep and shut down BridgeOS Kernel Panics, it seems that not using (not even launching) Safari 13.1 is a reliable workaround. This new Safari version seems to trigger a bug which results in the aforementioned problems. Using a different browser, such as Firefox or Chrome does not trigger the bug.
• Failing power supply for TB port can be restored by a SMC reset (some had also success with NVRAM/PRAM reset).
• No solutions were found so far for the macOS crash while using the Disconnect command for an eGPU. Disconnecting without macOS crash can only be done when Mac is shut down.

We have send in lots of Kernel Panic Report and bug reports (via Apple Product Feedback).

So far nobody got any response by Apple. We’re actually waiting for a fix with upcoming updates, as this is clearly a software problem.

Expected solution:

Apple must release bug fixed versions of BridgeOS and Safari for High Sierra, Mojave and probably Catalina. (Catalina users encounter some other issues since the SecUpd that need to be addressed).

You might also want to have a look at:

https://apple.stackexchange.com/questions/386761/mac-mini-2018-kernel-panic-bug-type-210-after-security-update-2020-002

https://forums.macrumors.com/threads/mac-mini-2018-kernel-panic-bug_type-210-after-security-update-2020-002.2228812/

German: https://www.macgadget.de/Forum/T2-BridgeOS-crashes-durch-Security-Update-2020-002

Hope, this might help a bit.

It seems the new Safari 13.1 triggers those crashes:

Reboot, login, open & close the current Safari 13.1 in 10.14.6. Then put the Mac mini 2018 to sleep. It crashes and reboots after about 2 minutes.

If I don't open Safari, the Mac sleeps OK. Also a cold boot does not issue a crash report then. If I have used Safari and shutdown, then after a cold boot there is a crash report.

I could repeat that many times on many user accounts and also on an external disk.

Hi all,

another (hopefully) former victim of Security Update 2020-002 here. I was struggling with frequent crashes during sleep since the end of March (Mac mini 2018 with Mojave 10.14.6), ended with Amphetamine set to indefinite awake session. Two days ago I tried the Big Sur route. Signed up to the Apple beta software program, downloaded Big Sur public beta (12GB), installed it on my external USB drive... and then put it back to the drawer. During the Big Sur system installation T2 firmware was upgraded from 17P6065 to 18P50347c and Boot ROM version from 1037.147.1.0.0 (iBridge 17.16.16065.0.0,0) to 1554.0.0.141.1 (iBridge: 18.16.10347.5.3,0).

Anyway, after booting back from Mojave, it's been two days of fine sleep without any problem now. It looks to me that it also resolved two additional annoying issues I had:

1/ my Wacom tablet was unusable for about 10 seconds after every wake-up (frozen pointer), and

2/ I had frequent spontaneous wake-ups of the computer during the sleep (even with Power Nap, Wake for network access, Find My Mac and other suspected processes turned off).

Now both above issues seems to be gone as well. Let's hope that my long-term report will remain unchanged. Thanks to all trying to solve this frustrating problem.

After giving up on a solution by Apple for the issues SecUpd 2020-002 introduced to me under Mojave, I now updated to macOS Catalina {T2-firmware 17P6610 / macOS 10.15.6 (19G2021)} one week ago and have to state that this did fix all issues for me (BridgeOS crash with sleep or shut down after at least opening Safari once before, macOS crash when disconnecting the eGPU by top bar menu command or turning it on while Mac is running).

Downside of this path: lost one application, needed to buy an alternative and now have to pay subscription for another.

No system crashes with Catalina.

I was a slow adapter, and after seeing the crash reports I refused to install Mojave 2019-002 security update or newer until I was ready for Catalina.

2018 Mac Mini + eGPU + 10.14.6 (2019-001) = mostly stable. ~10% crash on wake-from-sleep.

2018 Mac Mini + eGPU + 10.14.6 (2020-004) = Unusable. ~90% crash on sleep. Just as bad as reports suggested.

2018 Mac Mini + eGPU + 10.15.6 = Stable! Zero system crashes seen after two weeks of use*.

*A small number of applications like H&R block 'unexpectedly quit' on sleep, but the system stays up.

You would be wrong as MacOS 10.15.4 (19E287) has this issue in the wild. Very annoying. I’ve resorted to leaving iTerm running, this prevents the sleep reset.

Just a little follow-up:

Unplugging external USB C drives (I had two) but keeping the monitor plugged in to one of the USB C ports on the left side (I forgot which one) still resulted in crashes.

Unplugging external USB C drives and moving the monitor to a USB C port on the right side (close to power cord) has not resulted in any crashes either a) waking from sleep b) cold boot

I have not added in the external drives back in to see which USB C port might resume crashing yet. I wanted to make sure the 'solution' above was repeatable for a few days.

Thanks for all the work you people have done to ID the problem.

I too have been getting the same Bridge OS crash after upgrading to the latest Mojave Security Update and Safari.

I updated my 2012 MacBook Pro a couple of weeks ago and had no issues. I always wait before updating anything from Apple anymore.

Feeling confident, I updated my 2018 Mac Mini over the weekend and have been getting the same message as you all when I wake from sleep in the morning.

This morning's error message said it happened around 7:30 am, about an hour before I woke the Mini.

From reading your notes, it seems the crash is usually happening for many when first putting the Mac to sleep either by clicking sleep under the Apple icon or via the Energy Saver schedule. I always put my Mini to sleep via the icon and it does not crash at that point.

I have no idea if that makes any difference or if it actually does crash at the start and then again in the morning (and only the later crash is reported).

**So I gather from all your work that the consensus for now is to not use sleep mode at all. Perhaps a fix will come but I'm not holding my breath.

I'm so wary of Apple's updates and always wait (up to 8-12 months for a major upgrade), but in this case the T2 chip (which my 2012 MBP does not have) was part of the problem.

I chatted with Apple for a while yesterday.

First, I personally am sure this only affects two machines, one of the new laptops and the Mini 8, which have identical T2s and motherboards as far as I can tell.

Second, they are definitely aware of the problem.

Third, they still refuse to do data-gathering without Catalina on the internal drive.

Fourth, they will be issuing an update when they can.

My guess is that the update will be issued as a firmware update for both Mojave and Catalina. If it's issued for Catalina only, I would install Catalina on an external drive, then update that and hope the firmware update is the only issue.

I believe based on what I have heard so far that this is T2 related.

The support guy was unable to confirm any of what I just said, but he did say that there are other people with this issue who they have been able to get data from. Also, he looked briefly at the crash report and verified that the issue is not third party software.

I have tried booting in safe mode and on an untouched external drive system, and I have tried having all USB devices disconnected before sleep, including keyboard, and with different mice.

I am positive this is a Mini-8-and-one-laptop-affecting firmware/T2 issue and that the only solution for the moment is not to sleep.

The sleep and shutdown/cold-boot crash has persisted in Mojave (especially if Safari is used in the previous session) after the following five Mojave and Catalina firmware updates (that crash does not seem to happen in Catalina):

Security Update 2020-002 Mojave & macOS 10.15.4 update

Boot ROM Version: 1037.100.359.0.0 (iBridge: 17.16.14263.0.0,0)

macOS 10.15.4 Supplemental update

Boot ROM Version: 1037.100.362.0.0 (iBridge: 17.16.14281.0.0,0)

Security Update 2020-003 Mojave

Boot ROM Version: 1037.120.87.0.0 (iBridge: 17.16.15290.0.0,0)

macOS 10.15.5 update

Boot ROM Version: 1037.120.87.0.0 (iBridge: 17.16.15300.0.0,0)

Security Update 2020-004 Mojave and macOS 10.15.6 update

Boot ROM Version: 1037.147.1.0.0 (iBridge: 17.16.16065.0.0,0)

macOS 10.15.6 Supplemental update

Boot ROM Version: 1037.147.4.0.0 (iBridge: 17.16.16610.0.0,0)

A message a little earlier in this thread claims that Big Sur public beta 9.8.2020 might correct that Mojave sleep/shutdown crash. But I don't want to test beta software on my main Mac.

Boot ROM Version: 1554.0.0.141.1 (iBridge: 18.16.10347.5.3,0)

https://discussions.apple.com/thread/251226783?answerId=253212464022#253212464022

Hello,

Try running the following tests:

How to reset the System Management Controller (SMC) on your Mac - Apple Support

Reset NVRAM or PRAM on your Mac - Apple Support

How to use Apple Hardware Test on your Mac - Apple Support

My last steps were once again resetting SMC (because that's what the error message claims is wrong) in case I didn't do it right the first time — there is no indication you've successfully reset the SMC because, well, why would there be with today’s Apple, that has no sleep or battery indicator on laptops, the “on” light for Minis on the end most people don't see, etc?

BUT I also went into a folder I hadn't seen before, a system folder containing various software helpers, and got rid of a bunch of those. And used csrutil disable to trash the old Migration Folder which had old software including kernel extensions in it, then rebooted with csrutil enable.

I haven't seen crash reports. As you saw, I did post the reasons for the reboot. I got those by going into terminal and using:

sudo log show --predicate 'eventMessage contains "Previous shutdown cause"' --last 24h

For the first time since the security update, the system slept through the night. So I have some success, which hopefully will continue.

I would therefore advise anyone with this problem to redo the SMC reset.

With my setup it is only Safari that always seems to trigger the crash in Mojave:

I shutdown, do a cold-boot, shutdown and do another cold-boot (I don't know if doing this twice is needed but I want to reduce any workflow variations to the minimum).

Then I log-in, open www.apple.com etc in Chrome. Put the Mac mini to sleep (without logging out) for at least 3 minutes. No crash. Then do the same with some network-touching apps like Dropbox, Spotify, Calendar, iTunes, AppStore, Software Update. The Mac always sleeps OK. Then I finally open www.apple.com in Safari, quit it and put the Mac mini to sleep and YES: after about 2 minutes it crashes.

I can repeat this also on an external disk with cleanly installed Mojave 10.14.6 with Safari 12.1.2 (without the recent Security Update 2020-002 Mojave or Safari 13.1 updates (13.0.5 is today no longer listed in Software update)).

I guess Catalina 10.15.4 updated the firmware to Boot ROM Version: 1037.100.359.0.0 (iBridge: 17.16.14263.0.0,0), and I suspect this new firmware is the culprit for the Mojave sleep crashes. Catalina does not seem to crash in sleep.

What firmware do you have? Did Security Update 2020-002 Mojave update the firmware?

I updated Catalina on my external HD with the new "macOS Catalina 10.15.4 Combo Update" (*) hoping the updated firmware would fix the Mojave sleep crashes (it was updated to Boot ROM Version: 1037.100.362.0.0 (iBridge: 17.16.14281.0.0,0)). The new "macOS Catalina 10.15.4 Supplemental Update" should do the same firmware update.

But no: if I use Safari in Mojave and put the Mac to sleep, it still crashes after about 2 minutes.

I switch to Chrome until this is fixed.

(*) That update took about 40 minutes, and at the end booted to a seemingly stalled blank screen -- I let it sit there for 30 minutes and was prepared to do a forced shutdown but to my surprise at that point touching the mouse woke the display to a login prompt.