TS3824 My iMac won't wake from sleep after installing the most recent OS update.

I'm having trouble with my iMac, the screen won't wake up after it goes to sleep. The one time it did the screen was all fuzzy and pink. This has only happened in the last few hours after installing the latest OS X Lion update. Is this normal? Can someone help?

Hello, not normal.
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partitiion & use Disk Utility from there to Repair the Disk, then Permissions.
Re-install if that doesn't work.

Similar Messages

MacBook Pro won't wake from sleep after installing Snow Leopard

If my MacBook Pro is running while closed with an external display and I unplug it from the display it goes to sleep - as indicated by the white light and the front pulsing. If I then open the MacBook the display remains blank and it is completely unresponsive to any keys or track pad input.
The only thing it responds to at that point is holding the power button down until it powers down and then restarting - loosing all work in progress at that point.
Before installing Snow Leopard the Mac would wake reliably when opened from this state.

Mike Doolin wrote:
I think I may have found the fix for this. My MacBook Pro was dying in its sleep every time (after installing Snow Leopard), whether it went to sleep automatically or I used a Hot Corner. I went into System Preferences>Desktop & Screen Saver and changed the screen saver to Flurry, and it works now. I had had it set to a folder containing a single .pct file that I had created.
Good advice Mike! When in doubt check the ScreenSaver settings.
Definitely seems that it has a problem with that pic... In my case, selecting any images instead of the default setting (no screensaver) seems to have cured my non waking issue on my early Macbook Pro in Snow Leopard.
My original problem was that no amount of trackpad input woke it, but the space bar did. The space bar seemed to wake it up with the previous Screen Saver setting. Now trackpad wakes it up (even from total sleep as well as screen saver), too. Might be nice to know about if this is an intended 'feature' as a security trick. Otherwise I consider this a bug.
My vote is that it's a bug.

My new imac won't operate youtube even after installing the latest flash

my new imac won't operate youtube even after installing the latest flash

Problem solved!
I had downloaded and then installed Flash, and restarted.
The problem? I was expecting Youtube to work as on my old PC, where you get a little pop-up menu at the bottom of the TV screen to play. pause etc. That won't happen on a Mac until you click on the oblong that says Flash in the middle - I didn't know that!
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IMac won't wake from sleep since Lion!

Since installing Lion my iMac (intel core 2Duo) won't wake from sleep properly using my wireless keyboard, trackpad or magic mouse! I haven't changed any settings and I have to hold down the power button to force shut down and then restart! Any help?? x

Hi all
Finally went to the Genius Bar to ask the question as nothing has worked. They said I needed to reset my PRAM. I did it (Following these instructions... http://support.apple.com/kb/ht1379 ) and it worked.
So relieved....it was really annoying me.
Hope this helps others with the same issue.
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IMac won't wake from sleep mode after latest update

Hello, I have a Late 2013 27-inch iMac that has started acting strange, lately. After installing update 10.10.3, my iMac almost will regularly not wake once it enters sleep mode, after being idle for a certain period of time.
Is anyone else having this problem, and/or have any solutions for this?
Thank you in advance!

Step 1
Take all the applicable steps in this support article. That's the starting point for any further efforts to solve the problem. Please read the whole article carefully and don't skip any of the steps, including the ones under the heading Additional troubleshooting. If you don't understand any of the steps, ask for guidance.
Also note that if you replaced the internal hard drive with an SSD, or if you're starting up from an external SSD, then that device may be causing the problem. Check the SSD manufacturer's website for a firmware update. The only solution may be to reinstall the original drive or avoid sleep altogether.
Step 2
If you're running OS X 10.8.5 or earlier, from the menu bar select
           ▹ System Preferences... ▹ Accessibility
If the checkbox at the bottom marked
          Enable access for assistive devices
is checked, uncheck it and test.
If you're running OS X 10.9 or later, select
           ▹ System Preferences... ▹ Security & Privacy ▹ Privacy ▹ Accessibility
If any applications are listed on the right and have a checked box next to them, uncheck all the boxes and test. You may first have to click the padlock icon in the lower left corner of the window and authenticate as an administrator to unlock the settings.
Step 3
In the Energy Saver pane of System Preferences, uncheck the box marked
          Put hard disks to sleep when possible
Step 4
If you don't already have a current backup, back up all data, then reinstall the OS.* You don't need to erase the startup volume, and you won't need the backup unless something goes wrong. If the system was upgraded from an older version of OS X, you may need the Apple ID and password you used.
If you installed the Java runtime distributed by Apple and still need it, you'll have to reinstall it. The same goes for Xcode. All other data will be preserved.
*The linked support article refers to OS X 10.10 ("Yosemite"), but the procedure is the same for OS X 10.7 ("Lion") and later.
Step 5
This and the next step must be taken as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
In the Console window, select
          DIAGNOSTIC AND USAGE INFORMATION ▹ Diagnostic and Usage Messages
In the search box in the window's toolbar, enter "powerd" (without the quotes.)
You may see one or more lines like this:
com.apple.message.signature: Platform Failure
If you do see that, and you did everything in the preceeding steps, then you're dealing with an internal hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
Step 6
In the Console window, select
          DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that heading, select
          View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down.
You may see one or more reports with a name that begins with "Sleep Wake Failure" followed by a date. Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
I know the report is long, maybe several hundred lines. Please post all of it anyway.

IMac won't wake from sleep

New iMac 27 purchased Feb 2014. If the computer is allowed to go to sleep, it won't wake up. Neither taping the keyboard or mouse has any effect. Pressing the power button whether momentarily or holding it for up to 30 seconds brings it back. The power cord must be unplugged for at least 15 seconds, plugged back in and the power button pressed to bring it back.
Setting the computer to never sleep seems to be the only thing that resolves the problem.
Allowing the display to sleep is OK.
Manually choosing sleep from the Apple logo is OK.
Base model iMac 27 with just one option, the Apple 256GB SSD
Performed all the updates after first turning on the machine yesterday
Two external WD 4TB USB3 hard drives, one for data and the other for TimeMachine
Canon Printer
Canon Scanner
OSX 10.9.1
Any ideas?
Thanks,
Bill

The warranty entitles you to complimentary phone support for the first 90 days of ownership.
If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

HT1338 Imac won't wake from sleep when a facetime call comes in

My Imac will not awake from sleep when a FaceTime call comes in.

I've had this problem several times now, and I do no own MobileMe. I don't use any bluetooth peripherals, but I've noticed that the precursor to the problem is that my bluetooth icon in the menubar goes from normal to "Bluetooth Unavailable." Then at some point later on, I put the iMac to sleep and it won't wake up.
I've read elsewhere that the bluetooth unavailable problem may be connected to the power management unit, which may in turn explain what is going on with it not rebooting. But I'm not sure.

My elderly iMac (about six years old) won't wake from sleep after an electrical failure today, and starts up with a black screen.

This Intel iMac is about six years old, has had the motherboard replaced by Apple. Today we had an electrical failure, and it was asleep at the time. It refused to wake from sleep, and it seems to start up, but the screen stays black. I tried zapping the PRAM, shutting it down and turning off the surge protector, etc. . . and still, nothing. Any thoughts?

If http://support.apple.com/kb/HT3964 Intel-based Macs: Resetting the System Management Controller (SMC) does not work and you are comfortable working in the Terminal, try the following:
Enter into the Terminal the following: sudo pmset autopoweroff 0 and sudo pmset standby 0
If you like the hibernation, you can switch it back on by re-entering the commands with 1's instead of 0's. You can even change the amount of time by adjusting "autopoweroffdelay" and "standbydelay".

IMac will not wake from sleep after 10.4.8 Update

Recently after a couple of software updates my IMac goes to sleep and the Bluetooth keyboard and mouse will not wake it. The option for wake with Bluetooth is checked. I zapped the PRAM and also checked the HD, Nothing has changed. NOTE: No new software or hardware installs were done except for 10.4.8 update and the other mac software updates. This did not happen in prior versions of the OS on my iMac. Is this a new bug?
iMac G5 1.8 (pre iSight) Mac OS X (10.4.8) Bluetooth, Wake from Sleep

I've been dealing with this same issue, have tried everything, but to no avail. After MANY sessions on the phone with Apple tech support, as well as an Apple product specialist, I was advised to erase my computer and do a fresh install. I did an archive an install, which didn't help, but am not thrilled about the prospect of erasing everything and starting over. This problem started after the August 2006 round of updates. I feel it's bluetooth related, because I used a usb keyboard and mouse for a week as a test, with no problem. The funny thing is, I unchecked "allow bluetooth device to wake computer" thinking it might help, but the bluetooth devices continue to wake the computer anyway (except when it refuses to wake, of course!)
Jerry

10.8.5 iMac Won't wake from sleep/screen saver with require password set

I have several iMacs 2009/2010/2011 that are set to require a password when waking from sleep just this week all of them started freezing when this happened and will not start back up if restarted - they go pasgt the Apple Logo w Spinning gear to the Apple Log & Mouse icon - but don't make it to the login screen
The only way to get past it is to safe boot and delete the loginwindow.plists and loginitem.plists - and in one case go in in target mode and delete it
They are all up to date - the last updates I did were the 10.8.5 Supplemental Last week - and ARD Client 3.7.1 - Monday.
None of them have done again this since I deleted the plists
Has anyone else run into this? If so does anyone know if it is related to the updates or do I need to keep digging?
Thanks
Robbie G

I am having this problem still, even after updating with the latest combo. I find that my Macbook Pro (using 10.8.5) will show the beach ball spinning with a black screen. I have to restart the laptop in order to clear this problem. Very annoying since this can happen two or three times a day.
You mention 'plists'. What are they? And if you delete them, are they recreated automatically upon restart?

Mac book pro won't wake from sleep after Yosemite update

Since updating my laptop to Yosemite my MacBook hasnt woken from sleep
i can hear it turn on but the screen and keyboard don't light up
mac book is only 3 years old retina display

Mike Doolin wrote:
I think I may have found the fix for this. My MacBook Pro was dying in its sleep every time (after installing Snow Leopard), whether it went to sleep automatically or I used a Hot Corner. I went into System Preferences>Desktop & Screen Saver and changed the screen saver to Flurry, and it works now. I had had it set to a folder containing a single .pct file that I had created.
Good advice Mike! When in doubt check the ScreenSaver settings.
Definitely seems that it has a problem with that pic... In my case, selecting any images instead of the default setting (no screensaver) seems to have cured my non waking issue on my early Macbook Pro in Snow Leopard.
My original problem was that no amount of trackpad input woke it, but the space bar did. The space bar seemed to wake it up with the previous Screen Saver setting. Now trackpad wakes it up (even from total sleep as well as screen saver), too. Might be nice to know about if this is an intended 'feature' as a security trick. Otherwise I consider this a bug.
My vote is that it's a bug.

Won't wake from sleep after listening to audiobook

If my ipod goes to sleep after I've been listening to an audiobook, I can't wake it again, and have to restart it. It always works again fine after I restart it, until it goes to sleep again. I only have this problem if I've played an audiobook since the last time I restarted, even if I then played music tracks after the audiobook. If I restart it and only listen to music, it will wake up just fine every time. As far as I can tell from playing around with it, this only happens if it goes to sleep on it's own, not if I put it to sleep. Everything else works just fine, but it's really annoying to have to restart everytime I let it sleep during a book! Also, if I have to restart it, when I go back to my audiobook it will no longer remember the track position. But if I go play some music, let it go to sleep, wake it up, and then go back to the audiobook, it will remember the position again! I am totally stumped on this, I have never had anything this weird happen with my ipod, and I've had it for around 2 1/2 years. I have the latest version of iTunes and the lastest version of the ipod software.
iPod with click wheel
iBook G4 Mac OS X (10.4.9)

Mike Doolin wrote:
I think I may have found the fix for this. My MacBook Pro was dying in its sleep every time (after installing Snow Leopard), whether it went to sleep automatically or I used a Hot Corner. I went into System Preferences>Desktop & Screen Saver and changed the screen saver to Flurry, and it works now. I had had it set to a folder containing a single .pct file that I had created.
Good advice Mike! When in doubt check the ScreenSaver settings.
Definitely seems that it has a problem with that pic... In my case, selecting any images instead of the default setting (no screensaver) seems to have cured my non waking issue on my early Macbook Pro in Snow Leopard.
My original problem was that no amount of trackpad input woke it, but the space bar did. The space bar seemed to wake it up with the previous Screen Saver setting. Now trackpad wakes it up (even from total sleep as well as screen saver), too. Might be nice to know about if this is an intended 'feature' as a security trick. Otherwise I consider this a bug.
My vote is that it's a bug.

IMac won't wake from sleep mode

Just wanted to share my experience in case anyone has this issue.
Computer would only start after sleep mode if I unplugged the power cord. The power button would not do anything, even if I held it for a long time.
Shut down and start up would work normally. Only effected sleep mode.
After much trouble shooting I found that I had a bad USB hub. Everything on the bad USB hub would work fine so I didn't suspect it.

Very interesting, thanks for sharing.

IMac won't boot if Firewire device is turned on/won't wake from sleep

I am sometimes having an issue where my iMac won't wake from sleep; after I restart the iMac wont reboot (grey screen) until I power off the LaCie 300GB Firewire drive. I just bought this iMac a couple of weeks ago but the Lacie was on a PPC G5 Tower before and always was OK. I have no other Firewire devices to test the port with so my resources are limited. Anyone heard of anything like this ?
Message was edited by: appleboyperry

I noticed there is a firmware updater for LaCie drives. I don't know if it applies to your product, but here it is
http://www.lacie.com/support/drivers/driver.htm?id=10053
Please note what it says about backing up data on the drive before applying, just in case.

Won't Wake From Sleep

I held off from posting this until I'd scoured the boards looking for ideas, but I'm totally out.
Every since I updated to 10.4.8, my MacBook Pro won't wake from sleep. I've tried resetting the SMU and PRAM, enabled and disabled bluetooth device wake from sleep, and installed the latest EFI Firmware update that was just released. I've now narrowed it down to the 10.4.8 and a change in how it handles Expresscards. If I have my NitroAV FW 800 card plugged in during a session, it seems to prevent the MacBook from going to sleep properly. According to various Console messages, the PCI device prevents the computer from going to sleep, and /or places the computer into System Doze instead, from which it won't wake. The sleep light stays fixed and steady, only disappearing if I press the power button (it only reacts to the power button). From there the screen remains dark and all plugged in device fail to respond. I can hear the drive spin back up.
It reacts the same whether or not I eject the card before putting the computer to sleep. This behavior was not present before installing 10.4.8 and having fallen back on a back up of my 10.4.7 install, can say it's not present in the older OS version. I was hoping last night's EFI firmware update would deal with this, but after having installed it and 10.4.8 anew, I'm having the same old results.
If anyone has any new ideas or can direct me toward how I can make sure the folks at Apple see this, I'd greatly appreciate it.
MacBook Pro 2.16 Ghz Core Duo Mac OS X (10.4.8) 2 GB Ram, 7200 rpm HD, NitroAV ExpressCard FW 800

This is a typical console output for these incidents:
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: PCI sleep prevented by AppleFWOHCI (5)
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: PCI sleep prevented by PXS3 (1)
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: hibernate image path: /var/vm/sleepimage
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: sizeof(IOHibernateImageHeader) == 512
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: Opened file /var/vm/sleepimage, size 2147483648, partition base 0xc805000, maxio 400000
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: hibernate image major 14, minor 2, blocksize 512, pollers 3
Nov 2 04:32:04 marlon-rubios-computer kernel[0]: hibernateallocpages flags 00000000, gobbling 0 pages
Nov 2 04:32:08 marlon-rubios-computer kernel[0]: IOBluetoothHCIController::terminateWL .. done
Nov 2 04:32:08 marlon-rubios-computer kernel[0]: System Doze
After that, nothing until I force a restart.

TS3824 My iMac won't wake from sleep after installing the most recent OS update.

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