Mac Mini 2018 Kernel panic bug_type 210 after Security Update 2020-002

I sent the following message to https://www.apple.com/feedback/macos.html

"Previously a very stable Mac mini 2018 has now started to crash after going to sleep. Also after a cold boot there is a crash report. This started to happen after Security Update 2020-002 (Mojave). Resetting SMC or PRAM or safe-boot or checking with Disk First Aid does not help."

...I noticed that my recent tests with Catalina 10.15.3 -> 10.15.4 also updated the firmware (from Boot ROM Version: 1037.80.53.0.0 (iBridge: 17.16.13050.0.0,0) -> to Boot ROM Version: 1037.100.359.0.0 (iBridge: 17.16.14263.0.0,0)). Do you still have some older firmware? If yes, then the culprit seems to be the Security Update 2020-002.

Does this happen on other Macs?

See a very full discussion at https://discussions.apple.com/thread/251226783?answerId=252375172022

I would try resetting SMC again. A trick I saw later, to make sure it actually reset, is to disconnect all Internet access, and then see if the time is wrong when you reboot. If the time is wrong, you reset the SMC. (I can't vouch for that being true.)

what does it say when you go to terminal and type

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

?

Things I tried that did NOT work:

1) Reinstall Mojave

2) Safe Boot

3) Reset PRAM

4) Around two dozen other tricks

Also see https://discussions.apple.com/thread/251226783?

And yes, it's a crash on sleep, very common apparently on Mini 8,1

Add it to the “monitor won't wake” bug and the “disconnect Thunderbolt when Bluetooth goes on” bugs

JacekiREM, I'm not sure if Safari crash is directly related to T2 issue. I have had severe Safari crashing symptom, but it's gone now. It was memory or cache issue, at least for my case. T2 may have caused this issue, though.

Try following after reboot MacMini.

1 Check warmd is running or not with activity monitor. If it runs, temporary kill it with following command.

sudo launchctl kill -9 system/com.apple.warmd

1. Clean memory with MemoryClean 2 or such free program.

I too have so many panics because of this.

This morning I've tried to upgrade the T2 chip via initial part of a Big Sur beta installation on an external drive. Thanks for the tip. At least now I have the chime back and, more importantly, the white Apple at boot :D

I have a Sonnet BB 350W with a Sapphire Pulse RX580, plus a dummy HDMI plug in the HDMI port of the Mini.

I just want to add something I discovered a few months ago.

I can reproduce the freeze/panic 100% of the times by doing this:

• Open Safari
• Open a YouTube tab
• Start the video, then pause it after a seconds or minutes (shouldn't matter)
• Put the Mac on sleep (I usually do via Opt+Cmd+Eject)
• [...]
• Resume the Mac (I usually do by clicking on my Unifying-paired Logi mouse
• Reopen Safari
• Play the video

Effects:

For a few seconds the video plays, then just the sound, then after a few seconds also the mouse pointer stops moving. The system is not responsive anymore.

Workarounds:

• Stop using Safari (which I used to love) in favor of... Firefox for example
• Remember to activate the option to reopen closed tabs in Safari and close Safari before putting the Mac to sleep

YES, YES!!! When I don't use Safari - my mini is OK!!!

When I open Safari Ap. – after restart – kernel panic. Always!!!

Do this:

1. After working on Safari You must reseting SMC.
2. Don't use Safari.
3. For example Brave Browser is good alterantive.

Yesterday I noticed repeated very new crashes with my Mac mini 2018 with all latest Mojave updates:

I put it to sleep, after 1-2 minutes it spontaneously reboots and then displays an alert that the system had crashed. This happened four times in a row.

Previously the Mac mini has been very stable. Earlier that day I had done some tests with Catalina partitions (and finally could update them 10.15.3->10.15.4 but my problems there could be explained by having Catalina on a USB stick because on a SATA disk the update succeeded) and suspected that might have a some role. But maybe the recent Mojave updates explain this? I plan to do my normal troubleshooting today (reset SMC, PRAM, safe-boot, Disk First Aid).

> clean install does NOT solve the issue. As soon as I install Security Update 2020-002 the the annoying crash report still shows up

So a clean install works without those cold-boot (or sleep?) crashes _until_ the Security Update 2020-002 is applied, right?

I found the respite to be very temporary. Since then I have reinstalled mojave, created a separate clean install, safe-booted, and updated my external clean install of Mojave to Catalina, and talked a lot to Apple. It won't sleep in Catalina. The supposed solution is install on the boot drive. Not happening...

Hello,

having the same problem, on a iMac pro-mojave, since the security-update. the only solution, which lasted for just one day, it was resetting the SMC. But after shutting down...it came back at the reboot. This is the D-report:

build" : "Bridge OS 4.4 (17P4263)",

  "product" : "iBridge2,1",

  "kernel" : "Darwin Kernel Version 19.4.0: Mon Mar  2 20:38:56 PST 2020; root:xnu-6153.101.6~2\/RELEASE_ARM64_T8010",

  "incident" : "37088D82-F5C5-42CD-91BB-C2F20BC3CD3A",

  "crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001",

Would you say is it a real crash(so we should be worried about hardware) or just a bug that gives this message (so we all should not be worried until next update)...?

When I put the Mac mini 2018 to sleep (either while logged in or after logging out), its light on the front goes OFF and it reboots. So that looks like a real crash, right?

If I then do not log in, but put the Mac to sleep at its log-in screen, there is no crash. It seems to crash when going to sleep only after a logged-in session. AFAIR this happens on other accounts as well.

After a cold-boot there is a crash report although _then_ there doesn't seem to be a crash involved.

And only a few random times I have been able to provoke a sleep-related crash when booted from an identical cloned _external_ USB disk. The internal disk always crashes after a logged-in session when putting the Mac to sleep.

I hope there is a system update that fixes this soon because repeated crashes might corrupt the system.

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.