Mac crashes when waking from sleep

Good luck! I had this problem today on my iMac 27 I7. Suddenly started blacking out the screen on a regular basis. I first reset the power save options to default just in case one was corrupted and causing issues making the computer go to sleep on a very short timescale. No joy. I rebooted, turned off and restarted, etc.

I also noticed that my NAS drive was regularly saying that folders were not available in Lightroom. I thought it was overheating, so turned it off. Same problem within a couple of minutes. LR kept telling me the folder on the NAS was not available and the screen would regularly go black, every few minutes. If I got 5 mins use before the black screen, I was doing well!

Then I had to repeatedly press the power button to wake it up again. I then started looking at other things running. Things that automatically started at login. I quit MacUpdate Desktop and hey presto, problem solved. Unscrewing the back and removing the battery 2. SSH this is beyond me. VNC is also beyond me. I tried the following and only got a black screen in response: 1.

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Turning on and off 3. Waiting patiently Anything else, anybody might suggest? I tried a lot of things to wake mine up, but realized that typing in the password was so obvious, I was overlooking it. After any period of inactivity, the length of which you can set, a password is required to reactivate a Mac.

The simplest way I have found on my late iMac iCore5 running the latest MacOS software is to just type in the password. I have a MBP and occasionally have this issue and have tried all of the usual suspects. Yet it still seems to be intermittent. After a forced shutdown to get it back, the fans howl for a bit on a restart, and I have had a kernel panic as a result of the heat. My stupid guess..

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Thanks again. Plus every port has something connected to it and that can cause the problem too.

macOS - How To Change Computer Sleep Settings

What a cable nightmare. I never put my Mac Pros to sleep. I bump up the speed of all the fans when I step away and shut down most nights other nights are for maintenance. My iMac was doing this from both wake and start up and there is another solution under Fixing Black screen on iMac start up. I tried everything else but only this one worked.

Why does my computer freeze waking up from hibernation?

This usually happens if a software update is installed while the mac is sleeping, usually I just hard restart the computer and it proceeds to finish installing the update which usually takes min. It is a bit annoying though. It checks the file system, mounts the drive, removes a preference file, removes an upgrade cache file, then reboots. Install a VNC client on your mobile device.

Running First Aid Disk Utility

Log into your Mac. The screen usually comes back. This happened to my sister in law. I pulled the bottom cover, disconnected the battery for 15 sec. Then I reset the SMC. Her macbook was back to life. I tried holding down Command and R at start-up which took me to Utilities window. That causes their previous maybe defective settings to be overwritten. I also agree with Ted.

Why Doesn’t My Mac Wake From Sleep? [Ask MacRx]

I got mine in I used some windows and quite a bit linux before that. I gave up windows completely now and use linux almost exclusively. Not only it is free.

Why my Mac can´t wake up from sleep mode after installing JetDrive ? - Support & Download

It is most robust. I need to dig up something back from my mac today after a year not using it. Just found that I spent a whole morning just to get it out of this black screen. It is ridiculous.

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  5. I tried resetting the pram, using the stated procedure. It immediately booted normally…. No idea what I did wrong. MacBooks not up to snuff in ? The last time I saw a non-Apple laptop on TV, it was a boxy black thing, with a floppy disc slot on the side. Doug, simplest solution is to leave it open all the time.

    Hi John, I just want to know how long have you been leaving your Mac on? I am trying to fix the problem by letting it on for a while now, however, I always worry that I am over stressing my mac. I find that if I wait anything from 5 — 20 seconds it comes on automatically. Maybe some are too impatient? I also noted a few times that when it came on that my Mac was doing an automatic backup, and so maybe that is one of the causes.

    Apple releases macOS 10.14.6 Supplemental Update to fix sleeping Macs

    This started happening to me when I switched from using an Nvidia-based vpu MacBook to an Intel-based vpu Macbook Air sometime around Please visit the AppleSeed home page for more information on the seed program and joining seeding projects. How did you know? I had a black screen, for the first time ever, this morning when I woke my MacBook Pro.

    It was before reading this article! A forced reboot resolved it. No idea what caused it. I have been experiencing lockups that require SMC resets. I took my Air to the Apple store today. I suspect that you, and not he, are correct. I too have experienced this before throughout the years with MacBook Pro, often just closing the lid and waiting about 30 seconds or a minute then opening it again fixes it for me.

    I think what that does is force the Mac into a sleep state to create a new sleep image, then wakes it up again, and all is usually well.

    • Why Doesn't My Mac Wake From Sleep? [Ask MacRx] | Cult of Mac.
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    • Wake-From-Sleep Freezes.

    Like you, I seem to encounter this after or soon after updating system software. Name required. Mail will not be published required.