"BAD MAGIC! (flag set in iBoot panic header)" — Catalina freezing all the time!

I suggest you plug one or two usb-c or hdmi screens, plus an external drive, start some web streaming, put on sleep mode and wake up. Do that a couple of time. That should be enough to stress test your unit if you suffer from the Bad Magic instability.

On the last 20 pages a lot of people believed that reseting SMC and PRAM, changing the graphic card switching pref or reinstalling Catalina OS fresh was enough, they all came back after a few weeks.

In my case that issue started four days ago, after installing the last security update in a MacMini 2018 running macOS 10.14.6. I had a reboot warning popup after each start up of the computer, with no further problems, the computer just worked fine.

A NVRAM reset has solved this problem to me.

Thank you!

Same here: After I installed the security-update on my 2018-MacMini (running Mojave btw) the computer would panic/reboot with the BAD-MAGIC-error every time I put it to sleep.

VERY annoying.

I did an nvram -reset (CMD-OPT-P-R during boot) and now the computer behaves again as it should.

UPDATE:

apple has replaced my touchar bar and logic board under warranty.

i'm 2.5 days in without out a crash.

I suspect, for me, more related to the bad touchboard than the OS.

Ok, could you try and change your system language to german ? It‘s a long shot but worth the try.

Yes i can try, but its very sporadic issue for me. And after the latest 10.15.2 Update it never occurred again.

So I turned off all powersave auto functions and it seems to have stopped the kernel attacks. Saw another site that mentioned that.

How do you disable the graphic card switching ?

Reset SMC is Apple’s ”Have you tried turning your PC off and on again?”

PERMANENT FIX: GET IT REPLACED UNTIL THE SYMPTOMS GO AWAY.

If you tolerate this issue thinking Apple is going to help you, you will be apalled that they have no intention to do so.

It looks like the similarity in all the issues are two displays connected. I haven’t had the issues for a day or two now.

I have/had this problem as well. I was starting to think there was hardware issue, so i ran the hardware check.

getting 4 to 7 crashes per day for about 2 weeks since I started keeping track.

none of them showing up in the console app interestingly enough for crash report ..etc (dear apple, bug report on that).

I reinstalled OSX via the optoin+cmd+r during boot method ..etc and thus far haven't had a single crash post that. (only going on about 12 hours w/out a crash right now).

i've also set my touch bar to the "F1,F2,etc, Keys" since I was also at the same time seeing lots of crashes that appeared to be touchbar OS related .

yeah, 10.15.X is a disappointment with the number of bugs I'm hitting.

Same issue here. I'm noticing the issue AFTER I use my laptop not plugged in and then plug it into two LG Ultrafine 5K monitors. The 16" MacBook Pro freezes and the only way to get it unfrozen is to hard power off or pull the Thunderbolt cables for the monitors from the laptop and then the fans run super fast for a second before powering down. Then the computer restarts and I get the BAD MAGIC! prompt.

Interesting, hadn't considered that. I've found that if I just keep the machine in sleep mode (don't shut it down) it doesn't crash. Not an ideal solution, but hopefully Apple will resolve the issue soon.

Same issue here, got my first crash today. It happened when I connected a USB-C hub with a memory card in it. The laptop crashed, rebooted, and came back with the same error. My laptop is a Macbook Pro 16 inch 32GB ram, 1TB storage, 2.3 GHz core i9 processor, and 8GB GPU.

I will update here if I get more crashes, but I wanted to add to other posts here that mentioned that this happened when they connected external devices (like a monitor) or so.