Kernel Panic after upgrading to 10.14.4

I have swapped my 64GBs of aftermarket RAM with the same amount of OEM Apple RAM borrowed from another Mac Pro. So far so good after 24 hours.

I have also upgraded to 10.4.6, but I am more inclined to believe that it is the OEM RAM that is making things more stable. It would make sense that Apple tests their OS with mostly stock hardware, and some odd bug fell through the cracks and is hitting systems with aftermarket RAM/SSD.

I will circle back if anything changes. By the way, the donor Mac Pro is currently running El Capitan with my original aftermarket RAM, no issues to report.

If you have multiple Mac Pros, and move disks around, are you certain you have installed the correct firmware on each and every one of your Mac Pros?

Two firmware updates surrounding Mojave have enabled APFS Volume format and NVME drives.

You can safely download and install 10.14.5 (18F118d) / Boot Rom 130.0.0.0.0. I installed it the other day on

my MacPro6,1, and since then I have had no CPU Panics. I hadn't rebooted for a few days, but last night I did, and I have done so today as well. I usually could not get into OSX and do anything, before a CPU Panic appeared, unless I logged in "slowly" - by waiting about 10 min. at the login screen, but since yesterday I have not had any issues. I logged in immediately and put some pressure on the system, and still no problems.

Of course they may still appear, but Boot Rom 130.0.0.0.0 seems to have done the trick.

So I have had some level of success.

I enrolled in the beta testing and installed the Beta 1 for 10.14.6 (listed as 18G29g once installed). I ran that and found it crashed still.

I referenced some comments in this thread about "OnyX". To be honest I was not exactly sure what the reference was, but I downloaded a free program called OnyX and run the maintenance procedure there. There are three sections there. Rebuilding, Cleaning, and Misc.Options. I ran the default options on this program.

After running the default OnyX options I shutdown and unplugged the Mac Pro 2013 for 15 Seconds.

After which I have had no crashes. It has only been 48 hours, but at the very least it is WAY better than before. I can now work again!

Thanks to people here who have messed around and posted!

I can confirm that after replacing my RAM with 4 16gb hynix rdimm I have not had a problem since Friday. I bought mine second hand and it had a mixture of two types of RAM. 8gb and 16gb.

It is great to have it working again.

Quick update on my end. So far still no crashes after swapping the RAM with OEM, even under some fairly processor intensive tasks.

Now, I have been monitoring the system that is currently running the aftermarket RAM on El Capitan and it does show some ECC correctable errors with one of the modules. I probably could not see it before because the computer running 10.14.4 was rebooting so often.

I am ready to put a hypothesis out there: 10.14.4 + Aftermarket memory + ECC correctable error = Kernel panic

When I have a chance I will try swapping back the aftermarket memory minus the module that is showing the ECC errors. If this assumption is correct the system should not crash.

I'm glad I found this thread...was almost going to ship my Mac to Apple...serious waste of time & money I guess. After upgrading my Mac Pro 2013 to 10.14.5 it started to crash frequently. (kernel panics) I work a lot on FCPX and the crashes even damaged the library I was working in. I did a lot to pinpoint the issue: disconnect external disks, boot in diagnostics mode, reset NVRAM...I even reinstalled Mojave. Nothing helped. Whenever I started to render an edit in FCPX for sharing, the Mac crashed. So I thought the video card was dying, or even the processor. Until I read all your posts: Mac Pro 2013 users sharing the same problem in 10.14.4 or 10.14.5. First thing I want to do now is going back to 10.14.3 or even High Sierra to check if the Mac gets stable again. One thing though: I think the problem is temperature related. I installed the app 'Macs Fan Control'. If I force the fan of my Mac to a constant max value of 1900, I have no crashes when rendering in FCPX. At least, for now... Maybe it's something you want to try out too? It would be interesting to see that it is indeed a temperature issue. (you will have to get used to the noise of the fan though...)

I can confirm the same thing. Clean it all out and and thought for a short time I had fixed it. Definitely appeared to last longer before crash, but perhaps it was just a confirmation bias. Because next day it was crashing more than ever.

Only fix was a roll back to Mac OS 10.14.3 - (after roll back it is rock solid). I have not tested the latest releases as I kind of need the time and system to work. Would be great if an apple person could chime in and acknowledge the issue, and advise when a fix is around the corner.

Note: Kind of a seperate discussion here. All the dud ram, and second hand systems is definitely not my problem. Had the system since new. Literally never crashed since 2013. (almost.. ;) and after 10.4.4. Crash 10 times a day. More with heavy loads. Crash while not working at all... ie while not at the desk and the computer screens black.

Roll back to 10.4.3 fixes all the problems.

Just so we keep the pressure on the right issue:

This crash is entirely software related. There is a kext that Apple updated in 14.4 that causes these kernel panics. I've been keeping up-to-date with all 10 pages of this thread so far.

Apple offers the 2013 Mac Pro with removable/upgradable RAM as a "pro" feature. Any case of it working with aftermarket/OEM RAM on <14.3 and not working with >14.4 is entirely Apple's fault. Nothing has changed in the hardware. If they break compatibility with certain hardware, Apple's testing didn't do their job.

If after over two months of issues being reported by "pro" customers, Apple does not acknowledge the issue, then their entire business is disappointing to say the least.

It's got nothing to do with heat/thermals. It has nothing to do with load/idle. Nothing to do with the kind of apps you're running. Nothing to do with network disks.

It's purely a software issue. Downgrading to 14.3 makes it work just as it did before the update to >14.4. If people want to know how to do this downgrade, PM me. I have the original install disks etc.

Now we have to wait for Apple to release a proper fix for this issue. Until then, don't waste time doing anything other than the downgrade. I wasted a week's worth of productivity in all the various "solutions" people have reported as working here. Nothing works, apart from the downgrade.

Stop f...... about with 10.14.3 for a fix. There are now several people in here telling you that the issues are resolved in 10.14.6 B2. With the latest update the Boot ROM is updated to 131.0.0.0.0, and since that update people are not experiencing panics anymore.

I have 64GB OWC RAM in my 3.5GHz/6C Mac Pro with D700s, 1TB Flash Storage, and several Thunderbolt devices. Believe me I had crashes, and the only way I got through the last months, was by waiting for about 5 min. when the boot sequence got to login, and then again 5-10 min. until everything was loaded. Then it was bearable, and somewhat stable.

I can confirm that after installing beta 2 of 10.14.6 I had no crashes anymore. After having disconnected one by one all external devices, getting rid of 3rd party applications, reinstalling Mojave, run diagnostics etcera...this was the only thing that really did the trick. I'm working exactly as before: editing in FCPX with 3 external disks attached and I reinstalled the 3rd part apps. No crashes. Thanks a lot to all the users on this forum for their support.

The boot ROM will only update if you have the OEM Apple SSD installed. So, if you want to run a third-party SSD, you have to first install your original Apple SSD, install the lastest beta version of macOS to that SSD (which will also install the updated boot ROM), then reinstall your third-party SSD, and install the macOS beta (if you actually want the beta).

What gets the updated boot ROM installed is installing the beta on the OEM SSD, so you could install the beta there just to get the latest boot ROM and then remove and reinstall your third-party SSD and leave it as it was before.

My computer only crashes while idle (usually in the middle of the night) once every week or so. I did a bunch of upgrades all at once (CPU, RAM, SSD) so I'm glad these kernel panics are looking more and more like they're software-driven.

So after avoiding upgrading my OS like the plague I finally decided it was time... installed 10.14.6 and hoped for the best. Lo and behold, the issue seems fixed. I re-ran the application that caused a Kernel panic within the first 5 minutes after launching it and no crashes so far. Fingers crossed, but this looks like it's a wrap. ROM is now 132.0.0.0.0 on my machine as well.

I was running 10.14.3 for past couple months, never had any issues. Updated to 10.14.4, nightmare started. After brought to apple for fix some none exist issues, replaced SSD, Logic board as what apple told me. still the same. tried 10.14.5 beta 5, unresolved. downgraded to high sierra, running for like a week, no crashed no panic. Definitely apple software issues. CONFIRMED!!

I would encourage you all to file a bug report with Apple (just as I did) so they can look into it: https://bugreport.apple.com. It seems to be a problem with an Apple Kernel extension that causes a panic when the machine is under a lot of CPU load.