MP 7,1 Mac Pro 2019 CPU Upgraded to 28 Cores, shut Down unexpectedly. [solved] with More Update

[zhpenn]

Got the Mac Pro 2019 Yesterday, then replace to 28cores CPU 3275M, and add 4 x 32 RAM

Then I was trying to test lightroom export speed, the task is to resize 8000 JPGs
When exporting, CPU 28 cores are fully loaded, but a few minutes later, the whole machine just shuts down.

I tried 4-5 times, the same issue, but the first time, the machine is unable to turn on until I unplug the power then replug, but next 3times it will reboot after shutdown


there are some logs
the first log only shows one line
BLACK MAGIC .....

but the next few time shows the following

Panic(CPU 0, time 626778456926):
xxxxxxxx
xxxxxxxx

=====
Updated:

Special Thanks to Snow Tiger post on #12

Reminds me that maybe the screws do not tighten enough. So that the heatsink is not tightened enough. (WHICH MAY BE VERY COMMON ISSUE)

I thought it was tight enough, but actually a gap!
these screws need really BIG force to tighten it up!!!

Until now it up and running 10+ hours not have any issue.

======
Running Stress Test for 10 Hours
28 degree(room temp) summertime in OZ
CPU Fully Loaded working at 260W
the average speed of 3.1 GHz
CPU temp 85 degree

And the machine is super quiet!!
======

Also good to see the speed improvement in Lightroom Export
I export 8000 JPG resizing
2013 Mac Pro 12 cores take 29 mins,
2019 28 cores take just 12mins!
a huge jump

 

[crjackson2134]

Did you comprehensively test the new machine before you started replacing parts?

 

[zhpenn]

Did you comprehensively test the new machine before you started replacing parts?

no

 

[TheRealAlex]

Did you comprehensively test the new machine before you started replacing parts?

wow this was gonna be my exact same comment he doesn’t know if he even has a good machine to start with. It’s like here’s my new car, let me swap out the engine.

honestly sounds like a poor quality Power Supply and or poor voltage regulation from you Wall main power try using a SineWave active line power back up from TrippLite. Sounds like your Mac Pro told the PSU need more voltage when the PSU pulled more voltage from the mains it didn’t like the wave pattern or inconsistencies in the voltage and shut down to save itself.


Get rid of that Mac Pro ASAP. Swap in the original components and return it, nothing is worse than trouble shooting power supply issues because they can be so spotty.

 

[LightBulbFun]

curiously your panic logs point to the panic being caused by the Graphics card sound driver

maybe its a combo bug in adobe software+the new hardware?

 

[Passingby]

Do you mean 'bad magic'? This is the same T2/BridgeOS crash that we get on the MacBook Pro for 18 months.

MacBook Pro 16" Bad magic crash

Hello! I just received my MacBook Pro 16" and working using them since yesterday. Today after short break when I back to work I have noticed that all computer is freeze. Few second later fans starts on full speed and computer was restarted. When I logged back I seen error: Does anyone faced...

forums.macrumors.com

2018 MacBook Pros crashing with "Bridge OS" error

Catalina 15.2 I guess?

forums.macrumors.com

How bad is the T2 chip crash issue with the new MBP 2019?

Just watched a video of somebody with this issue on his new machine. He returned it for a refund. How widespread and often is this issue?

forums.macrumors.com

 

[Passingby]

BTW you posted info unique to your Mac. If Apple sees your post they will void your warranty.

 

[defjam]

wow this was gonna be my exact same comment he doesn’t know if he even has a good machine to start with. It’s like here’s my new car, let me swap out the engine.

It's a brand new system, why should he need to test it?

honestly sounds like a poor quality Power Supply and or poor voltage regulation from you Wall main power try using a SineWave active line power back up from TrippLite. Sounds like your Mac Pro told the PSU need more voltage when the PSU pulled more voltage from the mains it didn’t like the wave pattern or inconsistencies in the voltage and shut down to save itself.


Get rid of that Mac Pro ASAP. Swap in the original components and return it, nothing is worse than trouble shooting power supply issues because they can be so spotty.

Maybe a ground loop issue? Unlikely but if power issues are suspect it's something to investigate.

 

[MarkC426]

It's a brand new system, why should he need to test it?

It would be helpful to know if it was working in the first place, so you know where to troubleshoot.
If all worked great on 8 core, chances are it’s the cpu for example...... ?

What’s the price for a 28 core cpu....10k?
I wouldn’t be a happy bunny.

surely you can’t save that much doing it yourself?

 

[defjam]

It would be helpful to know if it was working in the first place, so you know where to troubleshoot. If all worked great on 8 core, chances are it’s the cpu for example...... ?

Is there any reason to think it wasn't functioning? I suspect it was and the upgrades caused the problem. Ran into that myself with my PowerMac G5. I replaced the system board (which had bad memory slots) with a replacement. The system failed to power on so I swapped back in the original system board. Now the system is partially functional. Except for the bad memory slots the system was working fine. I did something to cause its current state of operation.

What’s the price for a 28 core cpu....10k?
I wouldn’t be a happy bunny.

Agreed. At these prices I'd just buy directly from Apple.

 

[MarkC426]

I assume you still need to do all the thermal paste etc, or is it a fancy new technology.
Another reason I wouldn’t want to mess with it, especially within a week of purchase, especially for such a large purchase.

Ram or gpu is a no brainer, plug out, plug in.

28 core is actually £6300 extra in UK Apple store
[automerge]1577209950[/automerge]

Get rid of that Mac Pro ASAP. Swap in the original components and return it, nothing is worse than trouble shooting power supply issues because they can be so spotty.

Yes, then I can buy it from the refurb store for 20% off..... ?

 

[Snow Tiger]

Got the Mac Pro 2019 Yesterday, then replace to 28cores CPU 3275M, and add 4 x 32 RAM

Then I was trying to test lightroom export speed, the task is to resize 8000 JPGs
When exporting, cpu 28 cores are fully loaded, but a few minutes later, the whole machine just shut down. and the screen just turn off

I tried 4-5 times, the same issue, but the first time, the machine is unable to turn on until I unplug the power then replug, but next 3times it will reboot after shutdown

I am trying to unplug the ram and test again, but the same issue, so that means not the extra ram problem

I will try to replace back to the original 8cores cpu and test again tomorrow to see if it is because of the cpu.

there are some logs, can anyone here can see the problem?


the first log only shows one line
BLACK MAGIC .....

but the next few time shows the following

Panic(CPU 0, time 626778456926):
xxxxxxxx
xxxxxxxx

because the full log is too long I make it as txt in the attachment.

Hey , zhpenn ... I've been following your progress for some time . There are some possible issues here .

Did you reset the NVRAM yet ?

Did you perform a basic CPU benchmark test before you used the System to verify your processor is acting normally ?

As a side note , your memory configuration is not going to provide maximum bandwidth , but that is another issue to be solved later .

You pulled in an used W-3275M from a seller from tao bao or Alibaba , I noticed . He might have sent you a damaged Xeon . If that's the case , troubleshooting here at MR would not be helpful .

If your Xeon is OK , then maybe the issue is under-tightening or over-tightening the two T15 fasteners of the processor heatsink . 10 1/2 rotations of each of the fasteners with my MP 7,1 works fine . Make certain you apply equal pressure on each fastener during the tightening . This is a Mac and historically this is the appropriate installation method . That is , tighten one fastener with three rotations of the driver and then remove the driver and tighten the other fastener with three rotations . Switch between the two fasteners with your driver until each has been tightened with 10 and 1/2 rotations . There should be a visual indication of any gap between one of the silver heatsink standoffs and one of the black heatsink fasteners . It looks like this :

You want there to be the tiniest gap between these two items , in order to prevent over-tightening the fastener . This is especially important if you ship or roughly move your Mac Pro in the future . Unfortunately , you can examine only one of the fasteners this way . Hence , you should carefully tighten each fastener with an equal number of turns of your T handle torx driver .

If all else fails , reinstall the factory processor and hope you did not damage your Mac during installation .

For the safest method a layman can use , remove both the heatsink standoff plates before you install or remove the processor .

 

[MarkC426]

Call me a snob......?
But why spend £xxxx (much more than any other mac ever) on a new system to then put a used and possibly damaged cpu in....?

 

[Snow Tiger]

Call me a snob......?
But why spend £xxxx (much more than any other mac ever) on a new system to then put a used and possibly damaged cpu in....?

Because some of those CPU sellers from Shenzhen will sell you this chip at a $2,500 discount to what Apple will charge . Best you don't ask any questions where the silicon came from . Maybe a dead T-3275M Terminator .
[automerge]1577212379[/automerge]

BTW you posted info unique to your Mac. If Apple sees your post they will void your warranty.

The Eye of Sauron has nothing on the Eye of Apple , Inc .

 

[MarkC426]

Because some of those CPU sellers from Shenzhen will sell you this chip at a $2,500 discount to what Apple will charge . Best you don't ask any questions where the silicon came from . Maybe a dead T-3275M Terminator .

yeah and try and get a refund
the chance you take to make a saving

 

[Snow Tiger]

yeah and try and get a refund
the chance you take to make a saving

Still , there is a very good purpose for adding to the 'ol knowledge base these installation methods today . When the silicon gets really cheap a lot of users one day will make these DIY upgrades . Just like they did with the Mac Pro 5,1's and the X5690 Xeons . Those chips when released cost $1700 . On eBay , they cost used around $100 now and still pack a serious punch . Xeons are hard to kill , BTW .

 

[Pro7913]

wow this was gonna be my exact same comment he doesn’t know if he even has a good machine to start with. It’s like here’s my new car, let me swap out the engine.

honestly sounds like a poor quality Power Supply and or poor voltage regulation from you Wall main power try using a SineWave active line power back up from TrippLite. Sounds like your Mac Pro told the PSU need more voltage when the PSU pulled more voltage from the mains it didn’t like the wave pattern or inconsistencies in the voltage and shut down to save itself.


Get rid of that Mac Pro ASAP. Swap in the original components and return it, nothing is worse than trouble shooting power supply issues because they can be so spotty.

I heard many people complaining about Mac Pro's power supply for a long time that they had to replace it so many times. Mac Pro 2019's PSU seems to be easy to replace it but where are we suppose to find a replacement part?

 

[TheRealAlex]

I heard many people complaining about Mac Pro's power supply for a long time that they had to replace it so many times. Mac Pro 2019's PSU seems to be easy to replace it but where are we suppose to find a replacement part?

That Mac Pro is a work of art. And really makes me want this for my Gaming PC if it wasn’t for the nest of Wires Gaming PC are I’d get this for my PC.

https://seasonic.com/prime-ultra-titanium?__cf_chl_jschl_tk__=7ad37d191fa313e09fd2d28dd6e4a7c3c0a76be0-1577217962-0-AVOPX1UGp5FE-iv3LHBDy0vAvxfJ92DtKsxXGU93cAgb8QxW9Orth2mpAlLEzU0FGkKOyx67dmEehGdNusvUVpiikl9jAFCuISZyXgW_lvqEJ5M2OGhhUKJl7WtrHw3q9boN1jtS5pAB_S2qWDi1OTUmGSKZFVEaqeqSFVc7RzwC4xJ6vT-UIC2U8P-LqnmFrXwz0lwXH8FL3W-cuc9y04OegFGVM4tUzB6GZ6FY8QyqbsuGibqXa_fyEq9K4ZyfH7ifA4SY8QLPN5ZSL127-3-63pfsj-DvwZ0uSJBd5wce#

 

[Snow Tiger]

I heard many people complaining about Mac Pro's power supply for a long time that they had to replace it so many times. Mac Pro 2019's PSU seems to be easy to replace it but where are we suppose to find a replacement part?

The Mac Pro 4,1 and 5,1 PSUs were nearly indestructible . All you had to do was prevent dust from building up in them or blowing it out with an air compressor , if it already had dust build up inside . So many people thought their Macs Bit The Dust when all along it was the dust .

 

[Pro7913]

The Mac Pro 4,1 and 5,1 PSUs were nearly indestructible . All you had to do was prevent dust from building up in them or blowing it out with an air compressor , if it already had dust build up inside . So many people thought their Macs Bit The Dust when all along it was the dust .

Are you sure? Base on youtube videos, a music producer? didn't buy Mac Pro 2019 because of PSU failure with old Mac Pros previously since he had to run Mac Pro for several weeks continuously.

 

[Snow Tiger]

Are you sure? Base on youtube videos, a music producer? didn't buy Mac Pro 2019 because of PSU failure with old Mac Pros previously since he had to run Mac Pro for several weeks continuously.

Yup . I used to rebuild these used Systems for pro editors . The first thing I did was tear down the Systems to their nuts and bolts and clean them completely free of dust . The dust will get into the gold teeth connectors and even sockets and there's at least one covered switch in the PSU that's sensitive to particulate contamination . Once I properly cleaned the machine and upgraded / replaced the factory cooling materials they stayed online for years .

 

[zhpenn]

Hey , zhpenn ... I've been following your progress for some time . There are some possible issues here .

Did you reset the NVRAM yet ?

Did you perform a basic CPU benchmark test before you used the System to verify your processor is acting normally ?

As a side note , your memory configuration is not going to provide maximum bandwidth , but that is another issue to be solved later .

You pulled in an used W-3275M from a seller from tao bao or Alibaba , I noticed . He might have sent you a damaged Xeon . If that's the case , troubleshooting here at MR would not be helpful .

If your Xeon is OK , then maybe the issue is under-tightening or over-tightening the two T15 fasteners of the processor heatsink . 10 1/2 rotations of each of the fasteners with my MP 7,1 works fine . Make certain you apply equal pressure on each fastener during the tightening . This is a Mac and historically this is the appropriate installation method . That is , tighten one fastener with three rotations of the driver and then remove the driver and tighten the other fastener with three rotations . Switch between the two fasteners with your driver until each has been tightened with 10 and 1/2 rotations . There should be a visual indication of any gap between one of the silver heatsink standoffs and one of the black heatsink fasteners . It looks like this : View attachment 884562

You want there to be the tiniest gap between these two items , in order to prevent over-tightening the fastener . This is especially important if you ship or roughly move your Mac Pro in the future . Unfortunately , you can examine only one of the fasteners this way . Hence , you should carefully tighten each fastener with an equal number of turns of your T handle torx driver .

If all else fails , reinstall the factory processor and hope you did not damage your Mac during installation .

For the safest method a layman can use , remove both the heatsink standoff plates before you install or remove the processor .
View attachment 884567

holy ****!!!! I saw the GAP, I thought it was tight enough, but actually a gap!
now I tighten it and run the process again until now, seems to work ok now, thanks loooooooooot!!

these screws needs really BIG force to tighten it up!!!

 

[bosozoku]

holy ****!!!! I saw the GAP, I thought it was tight enough, but actually a gap!
now I tighten it and run the process again until now, seems to work ok now, thanks loooooooooot!!

these screws needs really BIG force to tighten it up!!!

Good!
Be careful with this big puppies!

 

[ksec]

Because some of those CPU sellers from Shenzhen will sell you this chip at a $2,500 discount to what Apple will charge . Best you don't ask any questions where the silicon came from . Maybe a dead T-3275M Terminator .

Yes, but not buying from Apple upgrade doesn't mean you have to buy a 2nd hand from Shenzhen ?. Although a new one is going for $4500.

holy ****!!!! I saw the GAP, I thought it was tight enough, but actually a gap!
now I tighten it and run the process again until now, seems to work ok now, thanks loooooooooot!!

these screws needs really BIG force to tighten it up!!!

................

So you basically have been "burning" your CPU for the whole time? I am surprised it even worked for a few minutes.....

 

[Macsonic]

Good to know that your 2019 Mac Pro is up and running well. Like what crjackson2134 mentioned, test and enjoy your computer extensively for days or weeks before making replacements.