Random dark screen/shutdown on MacBook Pr…

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I have a MacBook Pro (Retina, 15-inch, Mid 2014) that was stably running Catalina for a couple of years until I updated to Big Sur, didn't like it and decided to fall back to Catalina. Following Apple's documented process, built a Catalina installation USB and followed the procedure to erase disk and reinstall Catalina. Used Time Machine to restore files. I am now encountering random black screen lock ups followed by machine powering off in about 5 seconds. I have repeated the process a couple of time, trying to restore from an older TM backup but no joy.

The typical event is that it will be working fine until the screen goes dark with no cursor, however keyboards are still lit, the fan speed increases until about 5 seconds later when the machine shuts off. Console shows no crash logs however there are log files in /Library/Logs/DiagnosticReports, such as

/Library/Logs/DiagnosticReports/shutdown_stall_2022-07-23-000259_Mac-3c15c2eb43c8.shutdownStall

/Library/Logs/DiagnosticReports/shutdown_stall_2022-07-23-100010_Mac-3c15c2eb43c8.shutdownStall

I have used spindump to dump the first file which gives me a textual dump but I'm not sure how to interpret it or attach it here. So I guess the first question is how to I attach the log file here so I can hopefully resolve this issue? If I have to, I can paste the entire text here but it's a large file.

Thanks much,

Nitin

Show more MacBook Pro (Retina, 15-inch, Late 2013) Processor 2 GHz Quad-Core Intel Core i7 Memory 8 GB 1600 MHz DDR3 Graphics Intel Iris Pro 1536 MB Serial Number C02MH0HUFD56 It's a great machine and I love it for every day use. I've been running Catalina since it came out and about a month ago I decided to wipe it, entirely and reinstall Catalina. Everything was running fine until a week or so ago when I started getting black screens, then a few seconds later it shuts down. These unexpected shutdowns are happening more and more frequently - that has me believing some hardware is failing. I'm not getting any error messages or kernel panic messages, either. No spinning beach ball, no hung or unresponsive apps. It just happens when I'm surfing the web or watching YouTube or pretty much anything. I did a little research and tried the Reset the System Management Controller method (Shift+Control+Option+Power while it's OFF). No change, I still get black screens and a shutdown. Next I tried the Reset the PRAM method (Command+Option+P+R keys). Same thing - black screen then a shutdown. No error messages, not hung apps, nothing. I contacted Apple support via chat and they suggested I create a new test profile, set to administrator. I did that, logged in to the new profile and a few minutes later it shuts down again. The last thing I installed that might be the culprit is Canon's EOS utility - I use it to shoot tethered from a DSLR. It's not even running at the time of these shutdowns. What do I do? Is there something to look for in System Information? I can drop it off at a local Apple Store for service, if I have to, but I'm afraid a repair might be cost prohibitive. Thanks! macbook pro 13 inch 2019 screen randomly shutting off
Please take note that it's only the screen that is shutting off, Its does not restart the whole system. I went over to reset the SMC, but it only worked for a few or maybe not. It's when there is a sudden movement of the machine or when the screen is closed and opened after a few that is doesn't respond right away and screen is black not until you reopen the screen 2-3 times and click on the trackpad and/or power button. This is the 2nd MacBook which does the same. I returned the 1st one after two weeks of experiencing that to which I upgraded to Mac OS Catalina. This one is a day old as of today, which is pretty much the replacement of the returned one but with a higher storage cap and is still doing the same problem. MacBook Pro (15-inch, 2018), macOS Catalina 10.15.7 (19H1419), never ever shuts down cleanly
I have searched google and bing for help on this but there are no definitive answers. My Microsoft managed and owned MacBook Pro (15-inch, 2018), macOS Catalina 10.15.7 (19H1419) lost the ability to shut down cleanly. Every time I shut it down the same thing happens: All UI except for the Catalina background image disappears. A spinner is spinning in the middle of the screen. If left in this state it will sit indefinitely. I press and hold the TouchId pad to force shutdown. The next boot, I must clear the "Your mac shut down because of a problem..." dialog. Prior to this problem, I was able to shut down the MacBook Pro cleanly. Please help.
Unfortunately nothing I have done appears to have helped, this is the current status:
- Installed Catalina from a USB using Apple suggested procedure
- Updated to latest Security/Safari updates
- Signed into my iCloud account which syncs passwords and a bunch of other things including Photos - I am suspicious of cloudphotod so turned it off
- Turned off Spotlight
Essentially, within a short while of booting up the screen will go dark and then about 10 seconds later the machine will shutdown. No reports in Crash or Spin in Console.

EtreCheck report attached

EtreCheck report

The system log shows various failures and kill messages but it isn't clear that any of them illuminate the underlying cause. Unfortunately, additional text has a limit of 250k characters and the log is significantly longer. FWIW, I have attached an edited version with 100 lines before each boot (grep -B100 BOOT_TIME system.log > system-truncated.log)

Truncated system.log (100 lines before each boot)

Reinstalling Catalina, will NOT apply updates or log into iCloud this time to see if failure exhibits itself.

Anyone?

Thanks much.
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Did run etreCheck and the only major issues it flagged were unsigned Java run time plugins which I deleted. I should mention that Apple hardware diagnostics reports no errors. The machine hung again while installing Security Update 2022-005 (10.15.7) and that rendered it unbootable even in safe mode. Sign! So rinse and repeat. Only installed Catalina and the two latest updates (the one above and Safari). Going to manually reinstall software and data. Already encountered one crash in SoftwareUpdateNotificationManager and this is all only Apple software, the faith is being tested! Crash log attached.

SoftwareUpdateNotificationManager crash

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RESOLVED!

TL:DR

I followed the instructions at rmbp-crash to remove the Thunderbolt Ethernet driver and my MBP has now been stable for 24 hours. I can't use ethernet over thunderbolt but that's a small price to pay for an usable system.

Many thanks to Audit13 over at at macrumors.com for pointing me in the right direction.

Longer version if it will help anyone:

Unmodified 15' Mid-2014 with Retina display and GeForce GT 750M (MacbookPro11,3) that had been stable for 8 years started failing after an attempt to roll back from Big Sur to Catalina by reformatting the disk and restoring from a Time Machine USB disk. The failure would occur anywhere from a few seconds after power on to a couple of hours and followed a pattern reported by many others - the screen will go dark while the keyboard lights stay lit. In about 3 seconds the fans will start to rev up and at around 5 or 5 seconds the machine will power down. Pressing the power button brings the machine back up with no indication of failure.

Built in hardware diagnostics and extended hardware diagnostics run by the Apple store indicated no problems except for high cycles on the battery.

The problem occurred with standard Catalina/Big Sur/Maverick and no third-party software. in Maverick, the original OS the machine shipped with, the screen would freeze and require a hard power cycle to recover.

PRAM/SMC reset did not help.

The logs showed the following (from one of the Catalina installs):

log show --predicate 'eventMessage contains "Previous shutdown cause"' --last 24h

Filtering the log data using "composedMessage CONTAINS "Previous shutdown cause""

Skipping info and debug messages, pass --info and/or --debug to include.

Timestamp Thread Type Activity PID TTL

2022-08-06 16:12:42.684066-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2022-08-06 16:18:18.683751-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2022-08-06 16:40:13.743765-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2022-08-06 18:22:33.683862-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2022-08-07 06:35:41.696445-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2022-08-07 11:40:19.690762-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -128

2022-08-07 13:37:31.722643-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -104

2022-08-07 13:52:19.681924-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -104

2022-08-07 14:25:11.718230-0400 0xb5 Default 0x0 0 0 kernel: (AppleSMC) Previous shutdown cause: -104

--------------------------------------------------------------------------------------------------------------------

Log - Default: 9, Info: 0, Debug: 0, Error: 0, Fault: 0

Activity - Create: 0, Transition: 0, Actions: 0

All the -128 errors are the spontaneous shutdown while using the machine. The -104 are when attempting to create a TimeMachine backup using an USB powered disk. All failures occurred while the machine was connected to the power adapter.

I thought my google foo was okay but I never stumbled upon this answer, wish I had before spending close to a month on this.

Cheers all,

Nitin

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