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iMac randomly restarting
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kieran
Tweeting @kierankelly
 
Join Date: Jan 2005
Location: New York City
 
2019-01-14, 09:52

I have a latest generation iMac running the latest beta of Mojave. It's on pretty much all of the time as it's my media server, but lately, it's been restarting randomly overnight. I'll wake up and it's clearly back at a restarted state with all of the windows open.

Is there a way to figure out why this keeps happening?
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turtle
Lord of the Rant.
Formerly turtle2472
 
Join Date: Mar 2005
Location: Tidewater Virginia
 
2019-01-14, 23:06

Have you looked through the Console logs to see what they show? Normally there would be something indicate in there. "system.log" is normally a good starting point though you might need to dig through more of them. Of course, it really helps to know about when it rebooted just to make the log searching easier.

If it does it frequently enough you should be able to find why before too long.

Louis L'Amour, “To make democracy work, we must be a notion of participants, not simply observers. One who does not vote has no right to complain.”
MineCraft? mc.applenova.com | Visit us! | Maybe someday I'll proof read, until then deal with it.
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kieran
Tweeting @kierankelly
 
Join Date: Jan 2005
Location: New York City
 
2019-01-15, 08:21

So what would that look like? In all fo the years I've been on a Mac, I know what the Console is, but I've never had to dig into it.
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turtle
Lord of the Rant.
Formerly turtle2472
 
Join Date: Mar 2005
Location: Tidewater Virginia
 
2019-01-16, 11:20

I was trying to find a good example for you but it's not been as easy as I would expect. The first real issue is that I use a Standard user for my day to day use on my Mac. There is an admin user that I have for times when I need to do things that require admin. Reading the logs is an admin function.

So once I logged into the admin account to look over the logs I soon remembered why I hate combing through logs on macOS/OS X. There is so much clutter and crap logged that finding what you're looking for is just like the needle in a haystack.

I can say that normally you would have a period where the logging during one specific minute is really high. Instead of 10-20 for the minute there might be 100 or more logged that minute. So before that you would see what has logged and what happened right before shutdown/reboot.

This article talks about tracing out after a kernel panic, which might be what's been happening on your Mac. That or running out of memory and crashing.

Louis L'Amour, “To make democracy work, we must be a notion of participants, not simply observers. One who does not vote has no right to complain.”
MineCraft? mc.applenova.com | Visit us! | Maybe someday I'll proof read, until then deal with it.
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kieran
Tweeting @kierankelly
 
Join Date: Jan 2005
Location: New York City
 
2019-02-04, 09:52

I completely forgot about coming back and posting to this.

Thanks for that turtle.

Definitely not a KP though, because it has happened while I've been sitting in the room and there's no KP screen. The computer just seems to freeze up adn than restart.

I guess I just need to see what's running when this happens and then slowly go through and add things back to see what the issue is.
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turtle
Lord of the Rant.
Formerly turtle2472
 
Join Date: Mar 2005
Location: Tidewater Virginia
 
2019-02-04, 10:01

Is it possible it is a thermal issue and rebooting because of that? CPU overheats and triggers a reboot? They used to be widgets you could use to monitor the CPU for temp. Maybe there is something that is spiking the temp like iFlicks2 or some of that type of CPU intensive application.

Louis L'Amour, “To make democracy work, we must be a notion of participants, not simply observers. One who does not vote has no right to complain.”
MineCraft? mc.applenova.com | Visit us! | Maybe someday I'll proof read, until then deal with it.
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kieran
Tweeting @kierankelly
 
Join Date: Jan 2005
Location: New York City
 
2019-02-04, 12:06

That's what I was thinking. It does seem to be when iFlicks is transcoding, but it's also mostly overnight, so I can't really tell.

Hopefully the new release of iFlicks can help somewhat.

I do have it going in for a screen issue this week, so maybe I can ask them to look at the random shutdowns as well
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turtle
Lord of the Rant.
Formerly turtle2472
 
Join Date: Mar 2005
Location: Tidewater Virginia
 
2019-02-04, 20:58

I would definitely ask about the shutdowns. They might take a look at the thermal paste if they are going to have it open. Totally worth the mention.
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1claire
Bot Member
 
Join Date: Feb 2019
 
2019-02-19, 20:05

In rare cases, your Mac might spontaneously restart, become unresponsive, turn off, display a message that your computer restarted because of a problem, or display a message that you shut down your computer because of a problem.

Have it check on Mac centers to find out the reason behind it.
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turtle
Lord of the Rant.
Formerly turtle2472
 
Join Date: Mar 2005
Location: Tidewater Virginia
 
2019-02-20, 09:50

Did they find anything out about the reboots when they looked at the screen?
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kieran
Tweeting @kierankelly
 
Join Date: Jan 2005
Location: New York City
 
2019-02-20, 19:27

No. They couldn't replicate the problem, but the screen was replaced and it's back to working again, but still with the random shutoffs.

I'm convinced it's something to do with iFlicks, but can't pin down what the combination is that causes it.
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turtle
Lord of the Rant.
Formerly turtle2472
 
Join Date: Mar 2005
Location: Tidewater Virginia
 
2019-02-25, 11:39

Try leaving iFlicks disabled from the watch folders. Then one evening when you're home and able to look manually run the conversions and watch what happens.
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kieran
Tweeting @kierankelly
 
Join Date: Jan 2005
Location: New York City
 
2019-02-25, 12:21

That's not a bad idea. Just wish it would just figure itself out and stop doing it, but we can't have everything

I'll have to go through and just manually do one at at time and see if iFlicks is causing it, but whenever it restarts, it does seem to always have something in the iFlicks queue.
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bickxo
New Member
 
Join Date: Feb 2019
 
2019-02-27, 04:03

As far i know new firmware update caused the power adapter to shutdown and you're probably also seeing the gray screen on reboot. For now the best is to wait new update...
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