IMac won't wake up in the morning

iMac put to sleep around midnight, won't wake up at 7.00am . i have to hold the power button for approx.15 seconds then it restarts.
The machine is only 1 year old and has had been trouble free until upgrade to Yosemite. No mail is really slow - but works OK, and safari regularly crashes or I get the 'beach ball' when moving to a new page.
Within the last 2 weeks, now have this refusing to wake problem.
What's going on at Apple?

If your Mac happily goes to sleep but won't wake up--Hold down the power switch to force-reboot your machine and get it running again.
Don't worry-your Mac isn't narcoleptic. Its Open Firmware system or NVRAM (nonvolatile RAM) is likely corrupt, and your Mac can't remember how to wake up.
Restart your Mac and immediately hold down the Command-Option-O-F key combo until you see a somewhat intimidating command-line display that ends with the Open Fimware prompt. Type the following lines:
reset-nvram
press Return on keyboard
set-defaults
press Return
reset-all
press Return
Your Mac will reboot. Once it's running, put it back to sleep to test. If the problem recurs your Energy Saver preferences may be the culprit. Delete the com.apple.PowerManagement.plist file (go to Finder/Hard drive/Library/Preferences/SystemConfiguration)--don't worry, your Mac will regenerate a new one--and then restart to see if that rights the wrong.
Still did'nt work? Might be time to call AppleCare or see an Apple Genius or a technician.
Cheers!
DALE

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I have recently upgraded and am finding my iMac won't wake from a sleep state 80% of the time. What do I need to change or do to prevent this?

have recently upgraded and am finding my iMac won't wake from a sleep state 80% of the time. What do I need to change or do to prevent this?

Hi 02SilverSport,
Try using the power button to wake the iMac.
OS X Mavericks: Using the power button
http://support.apple.com/kb/HT5869
If you are using a wireless keyboard or mouse, check out this article:
OS X Mavericks: Wake your computer with a wireless mouse or keyboard
http://support.apple.com/kb/PH13997
And for more generic troubleshooting, try this one:
OS X: When your Mac doesn't sleep or wake
http://support.apple.com/kb/TS5357
where there's a section for "Your computer cannot wake from sleep" and "Your computer is slow to wake from sleep".
Best Regards,
Nubz

My iMac won't wake up when it's been asleep for awhile

Each morning now, (since the last update of ML) my iMac won't wake up from sleep when I try from either
my bluetooth keyboard or mouse. Seems like it would be a bluetooth connection issue but how do
I make sure it will not interfer with waking up my computer.
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it.

This sounds like the intermitent problem that has been around for a few users since some point during 10.6 Snow Leopard. I had the problem off and on and found the only 'fix' that worked 100% was to set: System Preferences>Energy Saver and set 'computer sleep' to 'never'.

My imac won't wake up from sleep

My iMac is about 6 months old and if it goes to sleep it won't wake up.
The screen is dark, I press on the space bar, click the mouse but nothing happens. (at least on the old iMacs there was a light to see whether it was on or not).
Then I have to hold the start button in for 15 seconds, let go, and then hold it in briefly and it restarts.
I'm running Lion. I have the screen saver set to 5 minutes and the energy saver 1) computer sleep and 2) display sleep both for 10 minutes

I'm having this same issue. Try this advice
http://www.maclife.com/article/howtos/how_fix_mac_won%E2%80%99t_wake

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Many have had success using the following. If you don't understand the text then watch the YouTube video.
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My iMac won't stay connected to the internet, even though all other computers in my house stay connected

My iMac won't stay connected to the internet, even though all other computers in my house stay connected, and its connection is set up the same way my fiance's macbook is (his macbook is about three years older than my iMac). Every time my computer goes into sleep mode and I come back (even if it's mere seconds after giving the black screen) I have no internet connection. I discovered a workaround for it some time ago, but now that is working less and less, and now my computer randomly disconnects WHILE I'm actively using the internet. Just a few minutes ago, the connection refused to come back until I restarted my computer, even though once again all other computers in the house were connected. The workaround I discovered before and which doesn't work as reliably now, is to click opne Airport at the top right of the screen, click "Open Network Preferences," then click "Assist me," then click "Diagnostics," and wait for everything to turn green again, signalling a connection.

Let's check the quality of your connection since signal strength alone does not insure a good connection. The "bars" that you see at the top of the iMac screen are there pretty much for show.
Hold down the option key on the iMac while you click on the Apple icon at the upper left corner of your screen and select System Profiler
Look down the list of items at the left of the window until you find the setting for Network, then click on AirPort.
In the window to the right, look for any listings of your wireless network name. You may possibly see two listings for the wireless network name.
We need for you to list the information that you see for Signal / Noise. These will be negative numbers. Post back with your findings and we will continue.
In the meantime, please move any cordless phones that you have or any other electronic devices that are near the iMac as far away as possible from the iMac.
If the iMac is located in a corner or an enclosed area, give it as much room as possible since the wireless antenna is on the back of the iMac and it needs to be able to "see" the room.
Anything that you can do to minimize the number of obstructions like walls or furniture etc between the iMac and the wireless router will help the cause as well.

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Hi I've been following this thread (along with a different one on the same topic). I've been having the same problem with my ibook. I can add that I have no problem with startup. It's just that the screen "goes to sleep" unexpectedly and may operate normally for a few minutes or a few hours at most. Opening and closing the lid or restarting seems to cause it to awaken but then usually for just a few seconds or minutes. If it is connected to another video display that display continues functioning fine even though the computer screen is blank. In addition the desktop is there and visible faintly or if totally blank can be backlit through the apple logo and can be read. I've had my logic board replaced twice under the extended warranty and assumed it was that but now I'm thinking of the reed switch. Apple refuses to consider any further work under warranty as the last repair was in Jan, 06 and they claim only a 90 parts warranty and the machine is from 03. Any thoughts before I cut the wires? I have reset the pmu, run cocktail and disk utility. Other than the sleep issue the machine works fine. thanks Ronda or anyone else who has any ideas... Dave

IMac won't wake with touch of mouse or allow remote connection when sleeping

My iMac will not wake with just the touch of the mouse any longer now that I have Mavericks. It did with Snow Leopard, but not with Mavericks. Now I have to hit a key on the keyboard or hit the mouse.
Also, when the computer does wake now, it take a while for the internet to connect again, the clock to update and my email to come into Outlook. When the mail does come in, the receipt time is wrong, of course.
In addition, I used to be able to connect from my windows laptop to the iMac through Filezilla even when the iMac was sleeping. I cannot do this with Mavericks. I have to physically go to the iMac and wake it up and then I can connect to it remotely. Kinda ruins the whole point.
I’ve made sure “Wake for network access” is checked in System Preferences > Energy Saver and I’ve made sure “Wake on Wireless: Supported” in there in System Information when accessed by Option + Apple icon.
How can I get my computer back to where it was- waking with only a touch of the mouse (not pressing keys) and accessing it remotely while sleeping?
I’m not a computer expert, obviously, so please explain any acronyms or jargon you might use when answering.
Thank you in advance for your help!

Thank you for your swift suggestion! I think it has worked I will monitor it for a couple of days

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.

IMac won't wake up

Hi,
I’ve been having a series of problems, which may or may not be related. Here is the sequence.
A couple of weeks ago, after putting computer to sleep the fan would run very loud for a minute or two .
Then, that stopped but computer would no longer wake from sleep. It was unresponsive to anything including pushing the power button to restart. For the last several days I've had to unplug the power cord and restart. I tried the following, but it continued not waking:
Reset PRAM on startup
reset-nvram manually
reset-defaults manually
reset-all manually
Then today I reset the SMU. After that Safari, Adobe Reader and ZipMacFiles4PC utility wouldn’t open (and there may be others). The crash report for each says essentially the same thing. Here is the report for a Safari crash:
OS Version: 10.4.11 (Build 8S165)
Report Version: 4
Command: Safari
Path: /Applications/Safari.app/Contents/MacOS/Safari
Parent: WindowServer [67]
Version: 4.1 (4533.16)
PID: 229
Thread: Unknown
Link (dyld) error:
Symbol not found: _ZN3JSC6JSCell14toThisJSStringEPNS9ExecStateE
Referenced from: /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.frame work/Versions/A/WebCore
Expected in: /System/Library/Frameworks/JavaScriptCore.framework/Versions/A/JavaScriptCore
This computer is an iMac G5 running OS 10.4.11. All system software is updated to the latest version of Tiger except Safari, which won’t install because of the installer crashing for the same reason as above.
NOTE: I have the original 80mb hard drive with about 4GB of space remaining...could this nearly full hard drive be part of the problem?
Any insight into the problem and solution would be much appreciated.
Craig

Hi Craig, and a warm welcome to the forums!
I have the original 80mb hard drive with about 4GB of space remaining...could this nearly full hard drive be part of the problem?
That's certainly cutting it close, my G5 with 10GB of RAM is still using 23.52GB of free space on the HÎ for Virtual Memory!
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
Have you blown the dust out oof it lately?
If you can get it running & clear some more free spac, Get Temperature Monitor - 4.51 to see if it's heat related...
http://www.versiontracker.com/dyn/moreinfo/macosx/19994
And/or iStat Pro...
http://www.islayer.com/apps/istatpro/
If you have any temps in the 70°C/160°F range, that's likely it.

Imac won't wake up since 10.4.7 update

Hello! I have a 17" imac g5 (purchased in 12/05) that will NOT wake up from sleep now since I have done the OS X 10.4.7 update. I have to hold the on/off button for at least 5 seconds and by the 2nd or 3rd time it will finally come on. Any ideas?? The only peripheal I have is a card reader. It does it with that unplugged. I also fixed disk permissions, still won't wake up. Since I am still relatively new to Mac, I need detailed instructions. Thank you so much in advance!!

Hello,
At this point, it would seem that you are down to two last options:
1) Re-install OS X from your original Restore disks.
2) take it in for repair and see if it's a hardware problem.
I think you have the last version of the iMac G5 (the one with the iSight). If so, you are still under warranty since those came out around November or December. So, you should still be in your first year (a 3 or 4 months left).
I think at this point, it would be best to do two things:
1) Run the hardware test that came with your computer. See if that finds a problem.
If it does, we'll stop there, and let you take it in for servicing.
This should be on one of your restore disks. It will say Apple Hardware Test on the disk somewhere (smaller print). And, provide directions for starting the test on your particular system.
Now, once you are in the test, run both the standard and extended tests. See if either finds a problem. This could take a couple of hours.
Let me know what it says.
2) Now, if it doesn't find any problems, then I would propose that you re-install OS X from scratch.
I would first copy any important information to an external drive or disk.
If you have an external hard drive, you could make a full backup of your entire hard drive using a program such as Carbon Copy Cloner:
http://www.bombich.com/software/ccc.html
This program can be used to create an exact clone of your main hard drive.
So, it is a bootable backup that can be used to put your entire system back exactly as it was at the time of the backup.
This means that if something happens, you can boot from your external drive, and resume normal work. Or, you can boot from the external drive and run the program again to restore your computer to match the backup.
This backup is an exact clone of your entire installation, so it is readable by another machine.
It works great, and I've never had a problem with it.
But, I use the "Clone" feature.
This has the advantage of being able to restore quickly, and return back to the exact point you were at when you backed-up.
In your situation, we would use this backup for two purposes. First, it ensures that all your important information is backed-up. Second, it means that if your new installation doesn't fix the problem, you could just revert back to this installation and everything would be like it was.
Now, if you don't have an external drive, then just backup your important files (e-mails, documents, downloads, anything of importance to you) to another disk (CD-R or DVD-R, etc.).
Make sure you get the 10.4.7 Combo Update stored somewhere so you can update again without downloading it.
Once you have verified that everything you want is safely stored on another disk or drive, then you could proceed with the re-install.
Make sure you disconnect any external drives (FireWire, USB) and other accessories before re-installing. Just keep your keyboard and mouse connected.
You can install OS X by booting from your Restore disks. Insert the disk, and restart while holding down the letter C on your keyboard until it finishes booting from the restore disk.
Once started-up, I would personally recommend using the "Erase and Install" option. This will give you a completely fresh installation without any of your old bugs getting carried-over.
The "Archive and Install" will basically install a fresh copy of your OS X while preserving your settings and installed software.
Here's a good article summarizing your options and how each works:
http://docs.info.apple.com/article.html?artnum=301270
The problem with Archive and Install is that sometimes problematic settings will survive using this method.
So, for best results, use the Erase and Install. Since you already have everything copied to another disk, this shouldn't be a problem.
Once the fresh installation is done, then see how your system behaves.
If everything is fine, then immediately install the 10.4.7 Combo Update.
Now, repair permissions.
See how things are now.
If everything is fine, then go ahead and setup your e-mail, programs etc.
Copy your data and files back, and resume operations
3) Now, if things still don't work right, then call your service shop and arrange for warranty repair.
It is a pain to go through all these steps. But, the service shop will blame software first unless the hardware test reveals a problem.
So, by doing a fresh install, you beat them to it. You can tell them you have already done that, and know the problem is hardware related.
Anyway, I hope that the re-install isn't needed. But, if it is, then the steps are listed above.
Start with the hardware test and other ideas above first. But, if those don't work or reveal something, then go ahead and re-install and let me know what you find.
Keep me posted on your progress, and let me know what does or doesn't work for you.
I hope this helps.

IMac won't "wake-up" after installing latest security update

I have a fairly new iMac G5 2GHz, and just installed the latest security update yesterday(4/1/06). Since that update, everytime my computer goes to sleep, I can't wake it up.
The power light is on and I hear the computer running... I can even hear the error "bonk" when I try and hit a bunch of keys, but still won't wake up. Was NEVER a problem until yesterday and I haven't installed anything else.
Thanks in advance

I have a fairly new iMac G5 2GHz, and just installed the latest security update yesterday(4/1/06). Since that update, everytime my computer goes to sleep, I can't wake it up.
The power light is on and I hear the computer running... I can even hear the error "bonk" when I try and hit a bunch of keys, but still won't wake up. Was NEVER a problem until yesterday and I haven't installed anything else.
Thanks in advance

IMac won't wake after sleep

Hi
I have a brand new iMac 21.5" with Hybrid drive.
Its OS and apps are fully update to date.
Strange thing is that it won't wake from sleep.
To reboot, I have to turn the power off at the wall and back on again. Neither of the usual
wake/reboot processes work (holding the power button briefly or holding the power button for
> 10 seconds). No combination of opt/ctrl/cmd/power work either. I have to turn it off at the wall
and back on again, after which it immediately boots.
I've reset the SMC and NVRAM/PRAM.
I've checked the power options - which are set to defaults (sleep after 15 IIRC).
I've also checked the console log at the time of sleep - and there is no indication of anything
going wrong (an example is below).
Does anyone have any other ideas as to what I can try before going through the painful process
of sending it into the shop?
Many thanks.
Paul.
Console log below. You can see the machine went to sleep after 12:05pm, and I woke it up and 8:20pm. There seem to be no unusual messages in the middle.
(The SASL failure is email... still working on that).
29/04/15 12:05:33.391 pm identityservicesd[265]: <IMMacNotificationCenterManager: 0x7fde94947690>:   DND Enabled: YES
29/04/15 12:05:33.392 pm identityservicesd[265]: <IMMacNotificationCenterManager: 0x7fde94947690>: Updating enabled: NO   (Topics: (
29/04/15 12:05:36.577 pm Mail[241]: Failed to start the SASL connection
SASL(-1): generic failure: XOAUTH2 requires user
29/04/15 12:05:44.142 pm Mail[241]: Failed to start the SASL connection
SASL(-1): generic failure: XOAUTH2 requires user
29/04/15 8:20:11.406 pm distnoted[232]: # distnote server agent absolute time: 6.328668630   civil time: Wed Apr 29 20:20:11 2015   pid: 232 uid: 506 root: no
29/04/15 8:20:11.592 pm otherbsd[231]: Could not get containing identifier from bundle: CFBundle 0x7fa663c16190 </Applications/Utilities/HP Utility> (not loaded)
29/04/15 8:20:11.592 pm otherbsd[231]: Could not obtain containing identifier for LoginItem. This LoginItem will not be bootstrapped: LoginItems/HP%20Device%20Monitor.app/ -- file:///Applications/Utilities/HP%20Utility/Contents/Library/LoginItems/HP%20De vice%20Monitor.app/Contents/Library/

I have gone to the apple support team - and they took me to the standard apple "what happens if your mac won't turn on" page
(If your Mac won't turn on - Apple Support) and walked me through the standard checks (which I'd already done).
The support guy thought it was a bad driver - I'm not so sure as I haven't installed anything new (just updates).
Anyway - I was just hoping/wondering someone in the wider community had seen this issue before I take the machine
in for servicing.

IMac won't wake up... but technically it's not sleeping

I leave my computer on all the time. For the last couple of days, when I first get to it in the morning, the screen is dark, but the light is on and not pulsing. The only way I can get it to respond is to power it off and back on. Of course then I get a message that it has unexpectedly restarted and would I like to report it to Apple. When I click on Report, nothing happens. I haven't done anything new except regular updates.

Hi Lisa6352
Welcome to Apple Discussions
When the LED light is on steady, the Computer is awake and only the Display is sleeping! First check your Energy Saver Preference to make sure "Put the computer to sleep when it is inactive for" is set to a desired time. Then also in the Energy Saver Preference, select Options and uncheck the box "Wake for Ethernet network administrator access" There are a number of running processes and connected USB devices that will keep the Computer from sleeping.
Some examples would be:
If any programs like iTunes are left running, then only the Display will auto sleep!
If an iPod, External HD, Flashdrive, Camera or cardreader w/card is left mounted.
If your printer/scanner is left on!
If sharing is setup for network access.
If any USB devices are connected to an incompatible hub.
Question:
With no applications open, your USB devices ejected/disconnected and internet sharing off, do both the Computer and Display sleep it you select sleep from the drop down menu? If not then reset the iMac's SMC carefully following the "How to reset the System Management Controller" in the following link.
http://docs.info.apple.com/article.html?artnum=303446-en
Dennis

IMac won't wake up in the morning

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