auto shutdown

TofSanity

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Original poster
Oct 29, 2010
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Does anyone know what this error is:
*** MCA Error Report ***
CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz, CPUID: 0x506E3)
CATERR detected! No MCA data found.


It was happening twice a day. I reinstalled the OS and now it's about once every four days. I am not really doing anything. I have good notes open, plugged into charger and have my iPhone charging in one of the ports. all on the right side.

it happens when charging the MacBook Pro and the iPhone. Also I have reset SMC an NVRAM/PRAM several times
 
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CoastalOR

macrumors 68030
Jan 19, 2015
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I assume you are talking about your 2016 15" MBP in your sig. It is such a new model, with some people on the forum having hardware issues. Why not use your warranty and talk to Apple? It may need repair or replacement.
 

TofSanity

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Oct 29, 2010
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Does it only happen when your phone is charging?
yes, Apple didn't think that was a problem, yet they were concerned about whether or not I had an external hard drive or monitor attached.


[doublepost=1488499692][/doublepost]
I assume you are talking about your 2016 15" MBP in your sig. It is such a new model, with some people on the forum having hardware issues. Why not use your warranty and talk to Apple? It may need repair or replacement.
I would and will if need be. I have a case open with them. I just sent them all my files. I am hoping it's software. this is the 3rd I have had since November. SO, I am hoping I don't need to return for repair or replacement.
 
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Sanpete

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Nov 17, 2016
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What connectors (including brand) go from your computer to your iPhone when charging?
 

Sanpete

macrumors 68030
Nov 17, 2016
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I don't recall hearing about any issues like this with that combination, but there have been issues like this with other things hooked up, especially monitors, even with Apple cables. I'm guessing it's some kind of software issue, or that Apple thinks it is, given the way they've handled these things. Hope they figure it out.
 

Calby

macrumors 6502
Dec 30, 2015
332
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Sweden, Gävle
Does anyone know what this error is:
*** MCA Error Report ***
CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz, CPUID: 0x506E3)
CATERR detected! No MCA data found.


It was happening twice a day. I reinstalled the OS and now it's about once every four days. I am not really doing anything. I have good notes open, plugged into charger and have my iPhone charging in one of the ports. all on the right side.

it happens when charging the MacBook Pro and the iPhone. Also I have reset SMC an NVRAM/PRAM several times

It could be some issue with the USB controller, did my self replace a machine for that.

Can you look if you have any crash or kernel panic log.
 

peraspera

macrumors member
Dec 17, 2016
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38
Are you running 10.12.2 or 10.12.3. The 10.12.2 update seemed to fix the issue for many that were seeing the "No MCA data found" error. If you are running either of those versions you may want to try installing the 10.2.3 Combo update after backing up. the https://support.apple.com/kb/DL1905?locale=en_US.

The error message you received wasn't particularly uncommon and seemed to have been related to USB rather than iPhone charging specifically. Adam Engst is a reliable source of information and posted about the issue in December when the "No MCA data found" error message was first widely reported. http://tidbits.com/article/16933
"The Apple Geniuses speculated that it might be related to USB power draw, and suggested that a future firmware update may be needed. This theory is supported by the fact that, on my replacement MacBook Pro, plugging in my Nexus 5X generates a “USB Accessories Disabled” error notification due to too much power draw, but still reports a 500 mA draw. When I reseat the cable in the same port, I get the same power draw without an error; if I try a different port, the error appears again."

"...I've talked with Dave Nanian of Shirt Pocket (Super Duper), and he's positive that the problem lies with the MacBook Pro's USB controller or firmware..."- one of Adam's comments below his post
 
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TofSanity

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Original poster
Oct 29, 2010
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Are you running 10.12.2 or 10.12.3. The 10.12.2 update seemed to fix the issue for many that were seeing the "No MCA data found" error. If you are running either of those versions you may want to try installing the 10.2.3 Combo update after backing up. the https://support.apple.com/kb/DL1905?locale=en_US.

The error message you received wasn't particularly uncommon and seemed to have been related to USB rather than iPhone charging specifically. Adam Engst is a reliable source of information and posted about the issue in December when the "No MCA data found" error message was first widely reported. http://tidbits.com/article/16933
"The Apple Geniuses speculated that it might be related to USB power draw, and suggested that a future firmware update may be needed. This theory is supported by the fact that, on my replacement MacBook Pro, plugging in my Nexus 5X generates a “USB Accessories Disabled” error notification due to too much power draw, but still reports a 500 mA draw. When I reseat the cable in the same port, I get the same power draw without an error; if I try a different port, the error appears again."

"...I've talked with Dave Nanian of Shirt Pocket (Super Duper), and he's positive that the problem lies with the MacBook Pro's USB controller or firmware..."- one of Adam's comments below his post

I am running 10.12.3. I am pretty sure I installed the combo update after I did a fresh install this past weekend. How would you recommend the install? Thanks
 

peraspera

macrumors member
Dec 17, 2016
67
38
I am running 10.12.3. I am pretty sure I installed the combo update after I did a fresh install this past weekend. How would you recommend the install? Thanks
If you aren't seeing this issue with USB drives or any other USB devices you might want to try a different cable to charge your iPhone.

If you have a lot of spare time you could back up then put a small partition on your hard drive and just install the OS on it with nothing else. Pass along the results you get from using the naked OS partition to the Apple engineers and ask them what they advise.

IF no answers from Apple are forthcoming very soon I think it would be more than fair to tell them that that power management misbehavior doesn't give you the warm fuzzies about using the computer and press them about offering a solution. That said, if you don't mind being patient about answers from Apple, it does seem that the issue is much more likely to be a false positive rather than your MBP ignoring a serious power issue.
 

TofSanity

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Original poster
Oct 29, 2010
685
91
If you aren't seeing this issue with USB drives or any other USB devices you might want to try a different cable to charge your iPhone.

If you have a lot of spare time you could back up then put a small partition on your hard drive and just install the OS on it with nothing else. Pass along the results you get from using the naked OS partition to the Apple engineers and ask them what they advise.

IF no answers from Apple are forthcoming very soon I think it would be more than fair to tell them that that power management misbehavior doesn't give you the warm fuzzies about using the computer and press them about offering a solution. That said, if you don't mind being patient about answers from Apple, it does seem that the issue is much more likely to be a false positive rather than your MBP ignoring a serious power issue.

Thanks. I have a case open with them. I have sent them all the files per their request. I was told Wednesday was the earliest they'd get back to me. Its not like I can't use it in the meantime. I have been charging both again this morning and haven't had a shutdown yet... thanks for your advice
 

DeltaMac

macrumors G4
Jul 30, 2003
10,343
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Delaware
No one has mentioned that if the problem only happens when you are charging your iPhone, then you may want to consider not using your MBPro to charge your iPhone.
 

Sanpete

macrumors 68030
Nov 17, 2016
2,596
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Utah
No one has mentioned that if the problem only happens when you are charging your iPhone, then you may want to consider not using your MBPro to charge your iPhone.
That's because it's supposed to be able to charge the phone. It's not like he's using it wrong.
 
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TofSanity

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Oct 29, 2010
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quick update. I had the same kernel panics today, there were two. The update is, I think it might be the Apple USB-C to Lightning cable. I moved the phone, both times, which extended the cable. The panic occurred at that moment each time. There may be a short in the cable, since I haven't another cable at the moment I cannot test the theory. What I did test was using an USB-C thumb drive in that port. I didn't have any shutdowns during the usage. Going to purchase a cable tomorrow.
 
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peraspera

macrumors member
Dec 17, 2016
67
38
I hope the issue turns out to be something as easy to fix as a bad cable even though it would be disappointing if it turns out that an Apple branded cable which carries power for charging lithium ion batteries turns out to have been wonky. If the cable is bad I would assume that your MPB is responding as designed by shutting down when it detects a USB power error condition.
 

TofSanity

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Original poster
Oct 29, 2010
685
91
I hope the issue turns out to be something as easy to fix as a bad cable even though it would be disappointing if it turns out that an Apple branded cable which carries power for charging lithium ion batteries turns out to have been wonky. If the cable is bad I would assume that your MPB is responding as designed by shutting down when it detects a USB power error condition.
I am leaning toward the cable. I have had the USB-C thumb drive in for threes tonight and haven't had a shut down. Used it about the same amount of time earlier today with no shut downs. With charging the iPhone I would have a had shut down within hour and half.
 

TofSanity

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Original poster
Oct 29, 2010
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91
Not going to post as "resolved" just yet, but after buying a new Apple USB-C to Lightning cable I haven't had any shutdowns. I talked with Apple yesterday to inform them of this update to my case.
 
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