My imac display will not sleep

I set it to one minute and wait and the display will not sleep

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Display will not sleep any more after waking from sleep

My Macbook has recently started misbehaving after waking from sleep. Started putting the entire MB to sleep each night by closing the lid. When I wake it in the morning everything seems normal, no error messages. However from that point forward the display will not dim or sleep. I've tried re-applying my settings in System Preferences -> Energy Saver. Pretty much the only fix has been to reboot, which is annoying and Windows-like.
In the interest of full disclosure, I have "fast sleep" enabled (aka hibernation mode disabled) but I've had that since I bought my MB with 10.5.1 on it. So I don't think it's related. In fact I changed to the default Energy Saver profile to see if that fixed the problem (it didn't), which re-enabled hibernation mode and I then had to re-disable hibernation.
I want to say this started happening after the 10.5.4 update, but that may have been a coincidence as to when I started sleeping it each night... I don't exactly remember.
I downloaded Cocktail to run all the cron jobs, etc, that don't get run when sleeping at night, and that didn't help either.
Any suggestions? Anyone else ever see this? Seeing it now?
Thanks!

This is still an issue for me.
I sleep my Macbook every night by closing the lid. After doing this a few times, the display either stops sleeping, or stops locking. I have the lock menu in the Apple menu bar, and even selecting "Lock screen" will not work.
Sometimes a reboot fixes it, sometimes I have to reset the SMC.
Any info out there?

IMac 600mhz will not sleep, nor allow dbl-click open

I've got a stubborn little slot-loading iMac 600mhz here, running OS 9.2.1. It arrived from my friend with what seemed to be a dead PRAM battery and these two issues:
1. it will not go to sleep automatically, no matter how the energy saver control panel is set. It WILL go to sleep when manually told to do so (thru menu or power button)
2. It often will not allow opening anything with a double-click. You can only open files, the HD, apps, etc by using the "open" command in the menus.
3. Oddly, it completely ignores a PRAM-reset keyboard startup command, just starts up normally.
These symptoms have survived all of the following:
1. replaced PRAM battery
2. ran Tech Tool Pro (nothing found wrong)
3. Tech Tool Pro's PRAM "zap" command.
4. rebuilt desktop
5. Installed clean copy of OS 9.2.1
6. Reset PMU (via logic board button)
7. optimized the HD and swapped RAM modules(these were being done anyway as part of upgrade)
I'm trying to get this iMac ready to update the firmware and install OS X, but these pesky little symptoms worry me. what could be causing them?
PowerBook G4

Unplug, then replug the keyboard. Try the mouse in one of the machine's USB slots. Try a different keyboard, or buy a replacement. It never hurts to have a spare in case you get a coffee spill or the like.
'Kinda' sounds like a fritzed keyboard.
David ...

IMac Suddenly will not Sleep

I have an iMac with i5 quad core purchased in Feb 2011 running OSX 10.7.3 that has suddenly stopped going into sleep mode. This is a recent development, it worked fine before. I can manually put it into sleep mode and it stays asleep until woken. I have repaired permissions, ran Onyx, booted in safe mode, turned off WiFi, desconnected all preferials, but nothing fixes the problem. System log doesn't seem to give any clues but I am not sure what I am looking for. Does anyone know if this is a problem related to the most recent OSX update? Does anyone have any additional suggestions on how I might track down and solve the problem? TIA

It was also the same problem for me. Finally simply have removed the Printer from the Print & Scan properties and did reinstall it. The printer was in orange and was marked as used. I did remember having print something few days before while the printer was not open.
I think this is the main problem most of people are experiencing when the computer do not sleep. I've read another tread about this and it solve the problem for most of the commenters.
So fixed.

Photosmart C8180 Touch display will not sleep when networked using Devolo Homeplug

The printer operates perfectly when networked via Devolo Homeplug system except that the touch screen will not enter sleep mode after 30 minutes of inactivity.
However, if the Devolo system is unplugged then the touch screen will enter sleep mode correctly.
Can anyone help.

I'm seeing similar behavior when I disconnect my TBD. My Retina MBP doesn't go to sleep. I get to work an hour later and it is very hot to the touch.
I'm not seeing lots of people complaining, so I wonder if it's something weird I do. Do you have VMWare Fusion or XQuartz running when you try and sleep?

My imac HD will not sleep

Hi,
I have an IMac and I can not get HD to go to sleep, I thought that I have tried all settings, but it does not help! Is there anyone who can help me.

I would first reset the SMC:
Shut down and unplug the Mac.
Keep the Mac unplugged for at least fifteen seconds.
Plug the Mac back in and do not turn it back on for at least five seconds.
Press the power button to turn the Mac back on.
Then I would reset the PRAM by rebooting the iMac while simultaneously holding the Command-Option-P-R keys until the machine restarts a second time.
Hope this helps

Sleep iMac display but not iMac system?

Hello,
I have a few new iMacs on our network and I'm not sure how to "turn off" the monitor, but leave the machine running? I would like the users to be able to turn of the display, but leave the machine running so nightly backups can take place. I've only been able to "sleep" the entire system + display, but not sure on how to just "sleep" the display?
Thanks,
Kristin.

Unless someone has come up with a hack of which I'm not yet aware we don't have access to manually sleep only the display.
In System Prefs/Energy Saver you can adjust the auto sleep settings to your liking. For example you can set the Mac to never sleep, but set the display to auto sleep after a period of inactivity.
In System Prefs/Desktop & Screensaver you can set a Hot Corner that activates the Screensaver on demand by parking the pointer in the hot corner. After the elasped time of inactivity set in Energy Saver the display will auto sleep.
If you are concerned about security you can set the Mac to require a password when deactivating the Screensaver or waking the display. You set this with a check box in the System Prefs/Security pane.

My iMac running lion will not sleep if an external HDD is connected.

My Imac will not sleep if the external HDD is connected. This just began to occur. If I unplug the drive it goes to sleep. This doesn't happen with any oter USB pereferals.
Thanks in advance.

From the menu bar, select
 ▹ System Preferences... ▹ Network
Click the Assist me button and select Assistant. Follow the prompts. How far do you get?

My mac mac book pro w retina display will not go to sleep when I close the lid or put it to sleep.

My mac mac book pro w retina display will not stay asleep when I close the lid or put it to sleep.
I put the computer in my bag and when I open it again the machine is so hot I can almost not touch it.
I am affraid that the hardware is allready fried.
Also when I press a key to restart after it has been idle for a few minutes it often takes up to a minute to wake back up.
This machine is bran new..
What should I do?

Try a SMC reset:
http://support.apple.com/kb/ht3964
If no success, then use your warranty and bring it in to the nearest Apple repair facility for rectifying this problem.
Ciao.

MacBook Pro will not sleep when charging and display is closed.

Hi,
My Mac will not sleep when it is charging. When I close my display, it will not sleep.
When I unplug the power cable, it sleeps...
I've tried to reset the SMC, and I think i did, the charger went from green to red etc different colours..
Does anybody know what this might be?
thanks

AIGHT GUYS!
This is how to fix it, and i guarantee u its 90% the cause.!
first of all, if you are a lion user (most likely all of you with this problem) go to system preferences, and then to sharing. turn all sharing OFF. especially printers....
open a terminal, and type in :
pmset -g assertions
This will show u if somehting is preventing ur mac from sleeping. on the left colomn, it should say "PreventSystemSleep" and on the right colomn a number. mine was one, which is probably the same for you guys.
Go to system preferences > Print & Scan > Open Print Queue. Make sure all the printing queues are empty and nothing is in there. You do not need to pause any or anything like that just make sure nothing is in the queue.
Close your macbook lid and look at ur light it should be sleeping. HOPE THIS WORKS FOR U
took me long enough to find out.
dont hesitate to ask me any questions

Brand new 27" iMac will not sleep

I have a brand new iMac 27" and it will not sleep. It just turns itself back on again.
I have the same hardware peripherals as I did on my 20" iMac.
I tried the energy settings, shutting off the wireless mouse, and I still can't get it to sleep.
I have read I can shut down "processes" but I'm afraid to as I don't know which ones to shut down and I don't want to mess up the system.
27" iMac
Processor: 3.4 GHz Intel Quad Core i7
Memory: 4 GB 1333 MHz DDR3
Graphics: AMD Radeon HD 6970M 2048 MB
1 TB HD
Lion 10.7.1
EDIT: I just tried to make it sleep by using a schedule and it worked. It stayed asleep. So what do you think?
Anyone?
I would really appreciate any help with this.
Thanks
Message was edited by: Paul131313

Try holding down command-option-P-R at boot time. Let it chime. Keep holding the keys down until it chimes again, and then release them, and see if it boots OK.
If that doesn't work, then power it off again, unplug it from the wall, wait 30 seconds, plug it in and try.
If that doesn't work, then reboot it, hold down command-R at boot, and try to get to the recovery partition. If you do, launch Disk Utility and try and verify the disk.

My iMac 27 medio 2011 will not sleep after upgrade

My iMac 27 medio 2011 will not sleep after upgrading to Yosemite. No problems before upgrading.
And yes, I have disabled wakeup via bluetooth.
Anyone else having this issue after upgrading?

No one else having this issue?

My iMac will not sleep when not in use.

The screen will go dark, but the disk will not sleep when not being used. I have restored defaults and set energy settings to do so and still no luck. Any thoughts? Was this part of a current update? It just started to not sleep a few weeks ago.

Thanks for your help regarding my computers sleep disorder. I wanted you to know that after many hours of searching, I found that I had downloaded a program called Growl with my Belkin router when I installed it. I removed this Growl program and finally my computer will sleep on it's own. I wanted to give you this info just in case you come across this problem again.
Thanks again!

New iMac display won't sleep?

Hi, new iMac 24", 10.5.7, set screen saver at 5 minutes, and display to sleep at 10 minutes. Screen saver works, but it will not sleep. I've changed the setting, and rebooted, still no luck.
I tried everything from suggestions, with no help. I found that if I turn off "screen sharing" in system preferences, it will sleep the display for whatever minutes I set. I have to leave "screen sharing" on because I have flat screen tv hooked up to watch video files on, and I use iPhone app to control screen, to hit play and pause, etc. It is set up with a password, and only my iPhone is used when I am watching something. Why should screen sharing stop display from sleeping? I've left screen sharing on since I got this, so I can remotely log in with "back to my mac" from the road, and it never stopped the display from sleeping before? I shouldn't have to turn off screen sharing just to sleep the display? Am I missing something?

This is for a Mac that won't sleep.
Here is KB article HT1776 with their tips.
Mine follow;
USB devices and hubs often cause Macs to not sleep or wake quickly from sleep (notably HP printers and scanners, HP all in ones, and Cannon scanners). Disconnect all USB except for keyboard and mouse and try. If it sleeps, add one back at a time testing after each one to find the culprit.
If you've set your Mac to receive faxes, it may not be able to sleep. It might also have a damaged preferences file.
If you use your Mac for faxing, open System Preferences. click Print & Fax, click the Faxing tab, and uncheck the Receive Faxes On This Computer box.If that doesn't work or you've never faxed on your Mac, go to Finder/Hard Drive /Library/Preferences/SystemConfiguration and delete the com.apple.PowerManagement.plist and com..apple.AutoWake.plist files (if your Mac asks, type your admin. password).
If the latter file isn't present in the folder, go to user name(probably your name)/Library/Preferences, delete the com.apple.systemuiserver.plist file, and reboot your Mac.
Hope this helps!
P.S. One member here reported this (Michael Gleason);
"I have had this problem with my IMac G5. It is surprisingly irritating. LaCie's Silverkeeper backup software was the cause. By default it gave itself permission to wake up the computer to check if a backup was needed. Do you have this or a similar program installed which has scheduled activities including wake-up permissions as an option?"
Dave Hamilton provided this link, xlr8yourmac.com, to a member, which addresses failure of deep sleep with some users that updated and added new FireWire and USB card.
Also, here is Apple KB article TA2469 about PCI cards and sleep.
tomhorvat adds this; After few days of messing around I found out that I had desktop background (wallpaper) set to change every 1 minute.
After unchecking "Change picture..." in system preferences (under Desktop/Screen saver), my powerbook went to sleep all by itself.
Tristan Currier noticed this; "I have a Canon printer(shared) and my imac would not sleep. I opened up printer/fax in system prefs and noticed it said the printer was in use when it was off. Opened up the printer queue and noticed about 7 pending documents. Deleted them all and now it sleeps.
Check the printer queue!"
Allan Jones says "sometimes there is Network activity: launch System Preferences > Energy Saver > "Options" tab and uncheck "Wake for Ethernet network administrator access."
Good Luck!  DALE

My display will not wake when I remote in

I have an imac early 2009. I have recently updated various software from Apple. I have the engery prefrence at : 1hour Computer sleep and 15 mins Display sleep. I use Gotomypc to login to my home computer. Prior to the new updates i did not have an issue with with the computer not waking from sleep. But since the updates my display will not wake? They hardrive wake but the screen just does not. I do have a screen saver, however, this was not an issue prior to the new updates. Any help would greatly appreciated.
Thank you in advance,

After a lot of research it seems to be an issue with the last update. It appears to be an issue with several application and the developers are aware of the issue. Unfortunately the only fix to the issue currently is to keep your monitor on. I have adjusted my screen to only be on at various time to prevent burn out. I hope this helps.

My imac display will not sleep

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