Questions tagged [diagnostic]

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Why has the MacOs Diagnostic Log shown an asterisk in an application path?

SuperDuper! crashed recently, and when looking at the report I found /Applications/Tools/*/SuperDuper!.app/Contents/MacOS/SuperDuper! The surprising part is the *, which I've never seen before. ...
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1answer
27 views

Macbook restarts when logging in

My Macbook Pro (Mid-2015, Mojave) restarts after I type my password to log in. The progress bar fills to about three-quarters before this happens. I have tried: Resetting PRAM Resetting SMC ...
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27 views

Which application creates the .hang files?

I know that ReportCrash creates the .crash files in /Library/Logs/DiagnosticReports when an application crashes. There are also .hang files in the same directory. Apparently, they are created when an ...
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1answer
76 views

How to understand macOS wireless diagnostics?

I run wireless diagnostics: to see which channels are best for my WiFi. In log I see: # --- Wireless Environment 2.4 GHz Networks : 4 5 GHz Networks : 3 Current ...
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0answers
228 views

(AHT) Anatomy of the Apple Hardware Test error code

I have these error codes from a Apple Hardware Test. After some research I found this and this which enabled me to translate the most essential facts behind them. However, some questions still remain, ...
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1answer
69 views

Stress testing a hard drive with lots of random reads and writes

I would like to stress test a hard drive with a long series of random reads and writes for a specified length of time, but I'm not sure how I can do it on macOS. I'm specifically interested in random ...
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1answer
456 views

How to fix memory corruption on 2011 MacBook Air?

I got a 2011 MacBook Air 13”, the device was slowly dying. Now it only boots intermittently and crashes/freezes within 15 seconds of boot up. Many times it does not boot at all - just black screen and ...
2
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1answer
24 views

macbook pro 8,3 crashes

I have been having sporadic crashes for 2 weeks now; mouse simply disappears from screen while surfing the net and everything locks up; BUT, the restart causes the big problem: I get the pink screen ...
2
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1answer
1k views

Mac Pro 3,1 Boot fail diagnosis

I have an old Mac Pro 2008 3,1 which after running pretty much 24/7 for 10 years was left switched off for a two-week holiday. Now when powered up, the PSU & GPU fans spin up, but nothing else ...
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0answers
39 views

Wifi ack failure and retry count

How can I get WiFi ack failure count, retry count and multiple retry count for on Mac ?
4
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1answer
755 views

Where Exactly are Apple Diagnostics Results Stored on Disk

I know that on macOS you can access the last run Apple Diagnostics test in System Information, as seen in the image below. You can also access reference codes in the Terminal using system_profiler ...
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1answer
114 views

why apple hardware test doesn't see my network?

I would like to check if the new installed ram can have generated a kernel panic with AHT (Apple Hardware Test). Restarting by pressing the D key the dropdown appears for the selection of the network ...
3
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1answer
2k views

ASD OS v ASD EFI?

I’ve downloaded the Apple System Diagnostics disk image and when I mount it I see another two disk images. One is ASD OS 3S150 and the other is ASD EFI 3S150. What’s the difference between the OS and ...
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1answer
8k views

Good application for detecting state (health) of SSD disk?

On my MacBook, I want to see the health status of my SSD. How can I do this? Which app to use?
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1answer
100 views

How to trigger spinning wheel diagnostics report

I'm working on application that consume significant CPU time and memory under heavy load. my setup configuration is fusion VM that runs macOS Sierra 10.12.6. At some stage I get spinning wheel and ...
2
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1answer
584 views

How to diagnose the SMC?

This article from the Apple Knowledge Base: Reset the System Management Controller (SMC) on your Mac describes very well which kinds of events are symptoms which might be related to an SMC in need of ...
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1answer
68 views

Apple Store Diagnostics say my hard drive failed but my computer works fine - Should I replace it?

I had my MacBook Pro 17", late 2011, in for a replacement of the motherboard. The technician in the Apple Store told me that their diagnostics said that not only my mainboard had failed, but also both ...
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0answers
56 views

Is there available software for MacOS to test iPad functions through USB or other interface?

Is there any software for checking hardware in iOS? mentions a few things for iPhone, some of which may work on iPad. But I can't get them, because the iPad has no internet. With WiFi enabled, it ...
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1answer
36 views

Folder with sign question (no issues in hardware) - help

I got a macbook pro 13inchs (2011), Yosemite. One week ago a folder with a sign question appeared in the first screen and that's where all my problems started. I follow some links in order to ...
4
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1answer
353 views

Stop El Capitan from asking to report to Apple every time I force quit an application

Every time I force quit an application from Activity Monitor, I get a pop-up saying "You have forced to quit. Click Report to see from detailed information and sent a report to Apple.". It gives me ...
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1answer
51 views

Does a Diagnostics & Usage entry imply an app was installed?

If an app has an entry in Diagnostics & Usage on a particular day, does that imply that it was installed on that day?
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1answer
552 views

How to diagnose a frozen Mac

When I woke my MacBook this morning, it was frozen. The screen came on, but it didn't respond to keyboard, touchpad. I forced a shut down by holding the power button. Is there a log file or set of ...
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2answers
16k views

Someone unauthorized is checking my phone

What does Settings > Privacy > Diagnostic & Usage Data mean? I think there is a chance that I am being watched.
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1answer
2k views

Found in diagnostics on an iPhone 6s Plus. Any idea what it means?

{ "is_simulated":true, "app_name":"Google Maps", "timestamp":"2016-06-10 17:10:20.20 -0500", "app_version":"4.18.0", "slice_uuid":"5fc56151-7941-332f-afaa-3b7fd611e204", "...
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0answers
6k views

How to interpret Diagnostics and Data?

I am trying to understand what all this means. This is one of the many different files in Settings > Privacy > Diagnostics & Usage > Diagnostic & Usage Data that I have found on my ...
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1answer
766 views

How to bring a dead MacBook Pro back to life

I have inherited a Mid/Late 2007 MacBook Pro from a colleague (A1226) but it doesn't work. It won't start up at all. No boot, not even the SuperDrive sound. I've tried resetting the SMC but it didn't ...
4
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1answer
736 views

Tracking down hard shutdown cause—software? hardware? overheat?

I'm running Mac OS X 10.7.4 on a 15-inch, early 2011 MacBook Pro. I've had the Mac crash a few times in the last couple months, all attributable to letting it discharge (careless me!) except for the ...
32
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1answer
26k views

OS X El-Capitan - /cores directory taking up a lot of space?

Im using a program called Daisy Disk to see what is taking up space in my Mac and I find that the /cores directory is taking up 77gb. Is that a problem? Can I get rid of it to regain the space?
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1answer
43 views

MBP SSD impending failure

Configuration: Late 2014 MBPr - Loaded (1TB SSD, etc.) Mavericks Bootcamp with Win7 Paragon NTFS driver I think my SSD may be failing. Recently, some files have started to go missing. Specifically, ...
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0answers
76 views

Diagnosing why a mac needs safe mode to boot

"Fresh" install of snow leopard 10.6 needs safe mode to boot. It's a 2006 24" iMac and I can't upgrade the software to lion since it's not availiable on app store (I don't really want to shell out any ...
2
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1answer
395 views

How to diagnose a crash from system logs?

I know you can get to the system logs from the Console and/or from the command line. That said, I don't know how to read them very well. How can I tell which events are related to a crash and which ...
20
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1answer
23k views

How do I tell if a device is doing USB 3.0 and not downgraded to USB 2.0 for some reason?

For example, if I plug a USB 3.0 device and find that the I/O performance is rather slow, how do I check whether it's because the device is actually doing USB 2.0 (even though I'm using a USB 3.0 ...
2
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0answers
1k views

Why is this AirPort+TimeCapsule disappearing from the network?

All was well for months, then suddenly Time Machine reported it hadn't backed up for 20 days because the disk was unavailable. When I cycle the power the Time Capsule is green in AirPort Utility, for ...
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0answers
85 views

How to analyse an iOS 8.2 Messages misbehaviour?

Bug description In iOS 8.2 I just discovered a misbehaviour of Messages application within the function to delete SMS. When a given discussion is opened, I want to select and delete a set of SMS. To ...
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0answers
9k views

Single User Mode not starting

First of all, there's no firmware password or anything fancy. I'm trying to diagnose a late-2011 MacBook Pro 15", and I'm trying to get into the single user mode. I press and hold Cmd+S (the left Cmd, ...
1
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1answer
2k views

iOS diagnostics test gives you new problems?

Has anyone gotten software problems after performing the iOS diagnostics test offered by Apple? (where you get a test URL from Apple support) I can't connect to Gmail on Safari after the test... it ...
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1answer
438 views

How to diagnose repeated OS X hang / spinning ball of death?

I got this error with everyday tasks. I tried verifying disk, permission. fsck -fy - files has been modified, then disk is ok. I repaired keychain. Do you have any idea what causes this problems? ...
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2answers
543 views

Recover application after it becomes unresponsive

Is there any way to recover an application once it freezes aside from killing it? Context being, I have been working on a couple of files in TextMate 1.5 and TextMate has stopped responding, I have ...
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2answers
628 views

What to check first when buying second hand iPhone 4S?

I am going to choose and buy second hand iPhone 4S (GSM). I have owned and repaired few 3GS but none of 4S. I need few suggestions what to check with this particular model from people with experience ...
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0answers
975 views

top / htop for GPU?

I have been having some of the worst performance problems with my Mac Pro that I've ever seen. It seems to start at the darnedest times with no apparent provocation. I've poured through everything ...
7
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9answers
20k views

Error creating bootable USB

For two days my Mac has been "dead"; the hard drive crashed, so I reformatted (twice). I wanted to reinstall Mavericks via Recovery, but at the end of the process it shows nearly 1 million minutes ...
4
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1answer
32k views

Diagnosis or Hardware Test on a mid 2009 Macbook Pro with MacOS 10.9.2

I would like to test hardware on a mac book pro model from 2009 with Mac Os X 10.9.2 installed. Since it is running unreliably I would like to perform a diagnosis/hardware test. What is easy to find ...
1
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1answer
715 views

Macbook Pro (Mid 2010) replacement power supply issue

I have a multi macbook/macbook pro household, made up of a 2006 mb, mid 2008 mbp, and mid2010 mbp models. I recently purchased a new 85 watt power supply and immediately noticed that it would not ...
2
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1answer
4k views

AHT and Apple Diagnostics not working!

I've been trying to do an AHT/diagnostics on my pre-2013 macbook pro. Unfortunately I don't have the original DVDs and when I tried online diagnostics (Option+D after pressing the power button) I get ...
6
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3answers
73k views

Does anyone know any good Diagnostic tools? [closed]

Does anyone know any good diagnostic tools for Mac? something inline with Apple Hardware Test, Apple Service Diagnostics, tech tool pro, preferably more in depth perhaps something low level, pre-OS-...
7
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4answers
69k views

How to start Apple Hardware Test without Apple Software Disk (MBP13 mid-2010)?

My question is very simple. I have some trouble on my MBP13 mid-2010 (MC375LL/A) and I want to diagnose it using the Apple Hardware Test. I try to hold the D key down during restart of the MBP but ...
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1answer
237 views

Identify disk manufacturer in Macbook Air

I wonder how can I know which is the disk's manufacturer for my Macbook Air. Is there a way to know whether the disk is one of those faulty SSD disk that Apple has recalled.
2
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3answers
1k views

5 minute battery life

I have a Late 2011 Mac Book Pro 15" and recently the battery has very quickly gone from several hours of battery life to all of a sudden only apparently having 5-10 minutes and by quickly I mean ...
6
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2answers
16k views

What Information Is Gleaned From Conducting An Apple Hardware Test?

What information is gleaned from conducting an Apple Hardware Test ( or Apple Diagnostics for Macs purchased from June 2013), when trying to find out if something is wrong with my Mac ?
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1answer
9k views

ctrl key no longer working in OSX

The ctrl key on my Macbook pro has stopped working at once! I have tested "Show keyboard viewer" from the languages, all keys are shown to be working correctly but not the ctrl key. Could it be any ...