Kernel panic on 2018 Mac mini

Hey all, I was able to solve the crash on sleep issue, although my solution probably isn't ideal.

After creating a new partition and installing Catalina on it, I found I had the same issue still, so I tried to restore my device to a time machine backup pre-security update. This restore failed and left my computer essentially bricked.

To even be able to access internet recovery I had to restore the firmware on my Mac mini by connecting a 2019 MBP via USB-C and running Apple Configurator on the laptop. Apple has instructions detailing the process here https://support.apple.com/sq-al/guide/apple-configurator-2/apdebea5be51/mac

The restore process will wipe your HD, which was fine for me since it was inoperable anyway. Once restored, I was able to access internet recovery and download Mac OS, although, by default, it downloaded Catalina. I just took the plunge and stuck with the upgrade, however perhaps its possible to install 10.14 at this stage as well with a boot-drive, or downloading and partitioning your drive later, I just haven't tested it.

It seems the shutdown problems stemmed from a bug or corrupt line of code in the Bridge OS (since the T2 controls sleep and shutdown, its possible that trying to communicate these features from the T2 Bridge OS to the x86 processor created fatal errors.) From what I understand, Apple Configurator is the only way to reset the firmware of your device, which I have a feeling may involve reinstalling the Bridge OS as well.

Anyway, this is my solution, my Mac mini has operated as intended for the past 3 weeks now. Hope this helps!

Hello,

Macintosh models with a T2 chip (such as the Mac mini 2018) also run a secondary operating system called Bridge OS. This exclusively runs on the T2 chip and communicates with macOS to perform various tasks that the T2 chip is responsible for. It appears that Bridge OS has crashed. Is this problem persistent or was this a one time occurrence?

Muito brigada. eu Ja tente todo. a apple support tambem. So me falarao que e a placa.

I only get the Bridge Kernel Panic notice after a cold boot. I don't always get it after restarting the computer. I got the panic message this morning even though I haven't been using Safari. I rarely get the panic message since switching to Firefox.

I am having the same issue as well.

https://discussions.apple.com/thread/251226783?page=1

The may update (2020-003) didn't help for me, I'm still experiencing the same issues (Mac mini 2018 10.14.6). In addition, I just added a volume to my drive and created a secondary install of 10.15.5 to see if Catalina would have the solution, and again I'm still dealing with the kernel panic after falling asleep bug.

At about 8 AM this morning (Fri. July 17) I installed the latest Security Update 2020-004 on my Mac Mini 2018. I shut it down and went to get groceries. I started it up about 1 hour later, AND THE BUG AND KERNEL MESSAGE GREETED ME.

It is not fixed.

Is Apple now prioritizing bug fixes based on product sales statistics? Are the products with small markets not even important enough to fix bugs? Bugs the Apple has installed into our Macs? I'm so disheartened that Apple has treated us like this.

I’m experiencing same with Mojave after installing March2020 security update.

Same here

On Tuesday, May 26, Apple released a security update for Mojave. I have not used it extensively, but some think it might resolve the sleep and crash issue.

Jcmusik08,

Thanks for sharing the troubleshooting info. There was a Safari update pushed out separately yesterday. VERY unlikely to make a different, but it is out there.

Unfortunately, these updates did NOT fix the crashing upon sleep/shutdown after all. Too bad.