Shutting down instead of sleeping..

For some reason, my Mac keeps shutting down instead of going to sleep. I've checked all the settings and nothing I can find is set to shut down. Any idea what is going on? Possibly related... my Dashboard stuff keeps disappearing (see post in Finder,Dock discussions) Hope someone can help!

Any time you have problems with power management or sleep/wake or shutdown/boot there are a few basic steps to try. These apply both to Tiger (10.4.x) and Leopard (10.5.x) versions of the Mac OS.
First, reset the low level controller in your computer that handles power management and sleep/wake functions (including scheduled events). In an intel-based Mac that is the SMC. In a powePC-based Mac that is the PMU. To do this, go to the main Support page here and search for "reset SMC" or "reset PMU" as is appropriate in the search field at the top LEFT of that page. In the list of Knowledge Base articles returned, find the instructions specific to your model of Mac. It is not tough to do, but you do have to find the instructions for your specific Mac. Note that resetting a PMU may require you to manually adjust the date and time (System Preferences / Date & Time) the next time you log in.
Next, reset the Parameter memory (PRAM). PRAM holds copies of various system settings for rapid access and if it gets out of whack all sorts of odd things can happen. The instructions for resetting PRAM are the same for all Macs. Shut Down the computer. Locate the 4 keys Apple-Option-P-R. Press and hold those 4 keys, and while doing so, press and release the power button. Keep those 4 keys held down until you hear the SECOND startup chime, then release them. Your computer will continue to boot up normally.
Finally, perform a Safe Mode boot. A Safe Mode boot does some maintenance tasks in the background such as repairing critical system file permissions and deleting some cache files, etc. To do a Safe Mode boot, hold the "shift" key while booting until you see the spinning gear on the gray Apple screen. Be patient, this will take a while. Eventually you will get to a log in window that includes a notation that you are booted in Safe Mode. No need to log in as the maintenance stuff has already happened. So just Shut Down from there and reboot normally.
If your Sleep problem persists after these three steps, take a look in the Console to see if any helpful error messages are being thrown (Applications / Utilities / Console -- select "All Messages" in the column on the left). Now even during a NORMAL boot and log in, there are a lot of Console messages generated, some of which can look pretty scary if you are not used to them. But a normal Sleep or Shut Down should generate very few messages, so scroll back in the list to the time where you tried to put the computer to Sleep and see what you find.
--Bob

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I am currently facing a rather strange issue. My old MacBook pro (about 2 years old) shuts down instead of sleeping but only when it is connected to the power adapter. I mean it goes to sleep mode perfectly well when it works only with the battery. Is it a know issue ? I'm running 10.5.6 and this problem is quite new to me (happened the first time some weeks ago).
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You might try resetting the SMC and see if this helps:
http://support.apple.com/kb/HT1411?viewlocale=en_US
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Macbook shuts down instead of sleeps

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Having never shutdown my laptop, I was guessing on its reaction to closing the lid. So, I shutdown my MBP and closed the lid. It did continue the shutdown, so there seems to be a problem with yours.
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IMac shuts down instead of sleeping

Hi everybody. Forum newbie here. I'm having a bit of trouble with my iMac. First of all, it's a G5 with 2.0 GB of facory installed RAM, and running OSX 10.4. I bought it barely used from a friend and when I first got it in the spring it shut down instead of going to sleep a couple of times. It wasn't a big deal, since it was overnight and not in use at the time. From then on it was fine. Over the past few days however, it has started doing this again, and much more aggressively.
It seems that it doesn't go to sleep at all anymore. It just shuts down. If you put it to sleep it will shut down. If it goes to sleep on its own, it shuts down. I went into the preferences panel and set it so it never goes to sleep and the monitor shuts down after 2 hours. I left it and went back to it after about 20 minutes and it had shut down. This happened repeatedly last night, causing me to waste 6 or 7 DVD-R, as I was attempting to burn one and it would shut down during the burning process. I had a pretty bad case of computer-induced Tourrette's syndrome I've gotta say.
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Welcome to Discussions. Which model do you have? If it's a Rev A (not ambient light and no iSight), then you might qualify for the Repair Extension Program. In any case, try and reset your PMU/SMU. PLease post back,
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MBP unib. 17" shut down instead of sleeping (also when plugging magsafe)

Hi All!
I've this problem.
When i get the system message that the battery is running out and i wait for it to discharge sometimes the MPB just shut down without apparently sleep, but when i turn it on the screen shows it went in hibernation.
Other times it goes and still in safe sleep but when i plug the magsafe it shut down immediately and i have to reboot it from hibernation every time.
Is there any way to fix this myself or i have to send it to support?
ty
jw

eww wrote:
Calibrate your battery and see whether that makes a difference:
http://support.apple.com/kb/HT1490
I tried but apparently nothing happened.
the calibration steps are:
_Plug in the power adapter and fully charge your PowerBook's battery until the light ring or LED on the power adapter plug changes to green and the onscreen meter in the menu bar indicates that the battery is fully charged._
_Allow the battery to rest in the fully charged state for at least two hours. You may use your computer during this time as long as the adapter is plugged in._
_Disconnect the power adapter while the computer still on and start running the computer off battery power. You may use your computer during this time. When your battery gets low, the low battery warning dialog appears on the screen._
_At this point, save your work. Continue to use your computer; when the battery gets very low, the computer will automatically go to sleep._
*At this point my macbook saves ram on disk for hibernation and shuts down itself imediatly after. Or in best cases it stays in a "can't wake" sleep for an hour or two and if i plug magsafe while in this state it shuts down...*
*Anyway i also did the last 2 steps:*
_Turn off the computer or allow it to sleep for five hours or more._
_Connect the power adapter and leave it connected until the battery is fully charged again._
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Can't figure out why my battery seems not to handle the 5 hour forced sleep it should.

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New 27" i7 shuts down instead of sleeping

Well, my brand new (just out of the box) 27" i7 iMac doesn't want to sleep: it shuts down immediately instead. Not a normal shut down, but it LOOKS like it's going to sleep, but it won't wake. It's not simply that she screen remains black, but it's shut down: one quick press of the power button and it restarts (no forced-shutdown needed). All applicable updates are installed.
Did some trouble shooting with AppleCare, and the following didn't work:
reset the PRAM, SMC (more on that later), set up a test account, reinstalled the OS. Nada.
On the SMC: the rep insisted that doing so involved just unplugging everything for 15 seconds. I've read things that say you need to press the power button (when all is unplugged) for 5 seconds; he said that's not for this machine. Haven't done it the other way yet: was he right?
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I had the same issue.....Jan 2010 27" iMac with 8gb ram. It started out where my computer would go into sleep mode and wouldn't come out of it even when i would press any keys or move the mouse. The only way to get it to come out of it is to hold the power button down for 5 seconds and force a shutdown. It would only happen after a prolonged sleep time, maybe a day or two. I tried everything I read over the web that could help like reset the SMC PRAM, unplugged all peripherals, used no surge protecter, adjusted bluetooth settings..etc..I stopped short of re-installling the OS........
Than the issue got worse to the point that the computer would just randomly shutdown and I couldn't even get my computer to power back up without unplugging for 15 secs and letting it reset. Apple care recommended that I take it to a genius bar so I did and luckily for me the computer randomly shutdown in front of him and would not turn back on. Just got it back today and Apple has replaced the logic board and the power supply. Hopefully that fixed the issue. Just 10 months ago I had to take my last 27" iMac back for the screen flickering issue. Not sure about Mac quality nowadays, in fact I compare them to Toyota and everyone knows what is going on with them. I will definitely be buying the applecare extended warranty and even though I'm a devout Mac fan owning every product you can think of I'll think twice about buying another Mac.

My Mac mini shuts down instead of sleeping.

I've been leaving my brand-new Mac mini on, assuming it would go to sleep like my macBook or dear, departed iMac would. I'm running OS 10.8.4, and I have the Energy Saver settings so the display goes to sleep after 15 minutes and the CPU sleeps after 1 hour. Instead, I return to find it shut down, hard: no white LED (blinking or steady), it won't respond to keyboard, mouse clicks, or even the power button. The only way I can get it back is to unplug the power cord, then do a full-up start. I have a Belkin powered USB hub attached and a Firewire external HD for Time Machine.
I need to know before the warranty expires--is this a hardware issue?
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1. Reset the SMC, as per > Resetting the System Management Controller
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
2. Click Schedule.. on the Energy Saver pane and make sure that you haven't accidently set it to Shut down at a given time.

G5 iMac sometimes shuts down instead of sleeping

I’ve recently started having a problem with my G5 iMac whereby it shuts down by itself after a while instead of sleeping.
Basically, I start up a task that might take awhile, such as burning photos to a DVD for backups, or updating an Aperture vault, and I go away for a while. I come back later, and sometimes I find that my iMac is sleeping as expected, and other times I find that it has shut itself down. It appears to complete the task before it shuts down. I’ve checked all of the preferences and can’t find any that tell it to shut down.
I’ve also checked the lists of G5 iMac that are affected by the known power supply capacitor issue, but mine is not in the list of affected units
I’ve searched the forums here, and I haven’t seen any other reports of this happening to anybody else.
Any ideas on what is happening?
PS: I’ve also been having occasional issues with unmounting external WD (Western Digital) FW drives lately too. I dismount the drive from the desktop, and the icon disappears as normal. I then power the drive down, but sometimes it will warn me that the drive was improperly removed and that data could be lost. This is odd since the drive icon was no longer on the desktop, so the drive appeared to be dismounted. This has happened with several different WD FW drives. The only thing I’ve noticed is that this doesn’t happen if the external drive appears to go to sleep after dismount. Sometimes, the drive appears to be active (even though the icon has disappeared). Again, any ideas?
Thanks in advance for your help.

MGW wrote:
Do your fans get very noisy before a shutdown?
Not before a normal shutdown. And since I'm never around when it shuts down by itself, I can't say for now.
MGW wrote:
It seems that you have some sort of thermal overload that causes the machine >to shut down during intensive use. You have enough RAM, and I assume that >your drive has at least 10-15% of free space, so either the thermal paste has >dried out, there is a bad connection or as a last thought, your logic board >could be failing.
I think I have around 165 GB or so of free space on the internal drive, so that should be OK. I didn't know about the thermal paste.
MGW wrote:
If it keeps on happening, you should, after making a full backup, take it in >to Apple and have them take a look.
I'm trying to keep my backups up to date, and I figured that it may need to go in. At some point, I would like to get a new computer, either a new 24" iMac, or a Mac Pro with a 30" monitor. I was hoping to get the new one before I'd need to send this one in for repair, but I might not be able to wait. This iMac is about 3.5 years old, so my Apple Care has expired.
It is odd that it always seems to complete the task at hand before the shutdown. If it was purely due to hardware, it should be more random than that, and not wait for the task to complete. I was starting to wonder if there is some sort of bug in the latest version of Leopard. I didn't have this happen before I upgraded to 10.5.6, but maybe that just a coincidence.
Thanks again for you help.

Shutting down instead of sleeping..

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