Dual 2.5 G5 won't auto sleep

Ever since I updated to 10.4.7, my dual G5 won't automatically sleep after any amount of time I set it to. The computer will sleep if I force it to either using the keyboard shortcut or through the Apple menu. The computer will also auto sleep in the other computer accounts on the same machine. For whatever reason, it will not auto sleep on my account. I few weeks ago, I created a brand new alias and moved all my files from my non-sleeping account to the new one. The auto sleep for for a few days before it stopped working.
I've tried trashing plists, preferences, removing USB devices, stopped file sharing, and more. I changed all my settings and active programs to exactly mirror the ones on the working account - but, nothing seems to be working.
I haven't tried flashing the PRAM yet, but I figure the problem is elsewhere since the computer will sleep on other accounts. Under my System Preferences, the extra panes I have are ATI Displays, DivX, Little Snitch, Nortorn Antivirus, Stuffit, and WMV Player. These panes also exist on the other accounts.
Anyone have any ideas what else may be causing this problem? I'm almost positive it's software related, but I don't know how to troubleshoot further given that I've already tried to make my account mirror that of a working one.
Thanks in advance.
Dual 2.5 G5 Mac OS X (10.4.7)

Well Norton is famous for causing problems for Mac users, just search, but perhaps it could be another problem.
Open the System Prefs>Energy Saver and set the auto-sleep to something really low.
Now leave the pane open and unlocked and just wait for the sleep to kick in.
Wake it up and set the time to a little bit longer, enough that you know it's not the minimum and this time close the pane.
If this fails, offload Norton and try again.
Norton has had a few application exploits, something to think about, also most anything from Microsoft seems to continously have security exploits.
Also you should be cloning your boot drive occassionally, visit Carbon Copy Cloners forums for donationware software and read the "Before you clone" in their forums.

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Mac mini won't auto-sleep (via energy saver)

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I'm having the same problem. I just got my Mini this weekend.
After setting it up initially, the energy saver sleep worked fine.
And I haven't installed too many things since. I did an upgrade of various mac apps through the software updater and I installed a shutterfly plugin for iPhoto but nothing else really.
I didn't notice exactly when it stopped working.
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Even though I had those from the beginning, I'm going to try connecting them directly to the mini.
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Won't automatically sleep with energy saver

Brand-new iMac will not automatically sleep, but will sleep on demand. Display sleeps, but hard drive stays on.
I'm not completely computer-savvy, but I've searched through other threads regarding this issue and tried the following:
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So I turned off Google Notifier. Didn't work.
It works with Please Sleep... but I just got this computer and it kind of ****** me off that it won't auto-sleep.
Can anyone please help or offer other suggestions?

I have the same problem and I've already contacted Apple about it. We've tried the same solutions as listed above and some more. Finally I had to record my system info during the problem (with Capture Data) and I've sent it to Apple.
The good news is that they know the problem and they are working on a solution.
The bad news is that I've bought my computer in February, I immedeately reported the problem, and there does not seem to be any progress. I contacted Apple again early May and they told me I should wait
I'll try the Sleep apps that are suggested above because it's extremely irritating the have your computer awake with fan and all when you want to sleep yourself.

IPad doesn't auto sleep

Since 2-3 updates ago, my iPad won't auto sleep, despite having it set to 10-5-2 minute auto sleep (I've tried all 3). I've seen other online posts for similar issues but no resolution. Thanks for any suggestions.

Hi ljc,
Try a reset - hold down the Home and Power buttons at the same time and continue to hold until the Silver Apple appears. Once the Home screen is back up, go in and set your Auto Lock timer to the lowest number and see if it starts working again.
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Auto-sleep won't work when web pages auto-refresh

Dear Apple,
Around 4 years ago, I noticed that my computer stopped going to sleep. I first noticed it shortly after adopting Gmail for my email platform and was subsequently able to isolate the issue down to Gmail and other websites, such as Huffington Post, which auto-refresh. Apparently, any website that auto-refreshes at shorter intervals than the auto-sleep is set to kick in, prevent the computer's auto-sleep function from activating.
I have spoken at length with AppleCare about this issue and understand that this is "by design." For instance, we wouldn't want the computer to constantly go to sleep while watching a movie or downloading and conversely, if we are actively working at our computers it's nice that Gmail auto-refreshes and keeps us appraised of incoming mail. However, since the vast majority of users now leave their browsers with multiple tabs open and due to the fact that more and more websites now auto-refresh, the auto-sleep function has become outdated and non-functional. While users can always manually put their computers to sleep, everyone at some time or another forgets to do so. This is exactly why computers are supposed to auto-sleep in the first place. Aggregated across millions of users, this results in a huge waste of electricity.
I've been writing/calling Apple (through AppleCare and the online feedback form) about this issue for 4 years now. I keep hoping that with each operating system release, some sort of "smart auto-sleep" function will be incorporated that will recognize when websites auto-refresh and still allow auto-sleep to kick in. Unfortunately, this does not appear to be the case in Lion.
I work in the energy efficiency field, specifically in lighting, and care deeply about this issue. I consider Apple to be an industry leader on this issue as well. I'm not familiar with the technical side of this issue, but I assume that with the right type of programming, the operating system could override a webpage's auto-update feature and activate auto-sleep, while not interfering with functions where a user would not want the computer to go to sleep, such as watching a movie. With Lion, Apple has focused its energy on making the computer adjust to the user,rather than the user adjusting to the computer. Yet, in this case, it appears to be the other way around.
It is time for Apple to update the auto-sleep function so that it takes into account websites that auto-refresh. When I set my computer to auto-sleep after so many minutes, I want it to do so, regardless of whether I have a browser with auto-updating websites open. Apple must take this issue seriously, as the wasted electricity is too important to ignore any longer.
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An Energy-Conscious User

I am obviously talking to Apple AND I posted this letter here, because a lot users seem confused about why their computers won't sleep. Even most AppleCare reps are confused. In the past, I couldn't find much in the way of explanations pointing to this issue, so I thought I post it here in case other people are looking for an explanation.
The auto-sleep function was built before websites auto-updated and needs to be updated to accomodate them. For the average user, it doesn't make sense for the computer not to sleep just because Gmail is open. Just because some website auto-refreshes in my browser, doesn't mean I never want my computer to sleep. By the same token, if I wanted to turn off auto-sleep I could easily do so from within Energy Saver Preferences. The two should be independent, so the user has the choice.
Why should I have to close my browser every time I walk away from my computer in order for it to sleep? I've acknowledged that in certain circumstance it makes sense for the computer not to auto-sleep: watching a movie, uploading, etc, but Apple has already accounted for those instances because the computer does not auto-sleep when those programs are running. All I'm suggesting is making the auto-sleep mechanism more sophisticated so that it isn't overridden by websites auto-refreshing.
Why the negative attitude, dwb? Based on the amount of time you spend in these discussion forums, you obviously never turn your computer off, so this doesn't really affect you. Maybe it's time to step outside and get some fresh air?

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This is for a Mac that won't sleep.
Here is Apple's 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

Auto-sleep, okay. Manual sleep, and it wakes back up. ???

My iMac keeps waking itself up after I set it to sleep. It only stays asleep if the auto-sleep time runs out in the power saver under system preferences. Why won't manual sleep (through the apple menu) work?
Message was edited by: Enio Rigolin2

Hi Enio
First eject and disconnect any External HD's, iPod's, iPhone's, iPad's, other USB devices, turn off your printer and see if it will sleep.
Next reset the SMC > http://support.apple.com/kb/HT3964
+1. Shut down the computer.+
+2. Unplug the computer's power cord.+
+3. Press and hold the power button for 5 seconds.+
+4. Release the power button.+
+5. Attach the computers power cable.+
+6. Press the power button to turn on the computer+
Then if that does not help, see > http://support.apple.com/kb/HT1776
Dennis

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I have a small annoyance with my 2009 (Nehalem) Mac Pro I am wondering if someone can help with, or suggest something, please:
The Mac Pro does not auto-sleep; ever. I have played around with the sleep time settings, and enabled or disabled the 'sleep drives' option, but to no avail. Mac Pro will stay on, no matter if I am logged on OR even on the 'log on users' screen.
That said, I can sleep the Mac Pro manually at any time, and without any problems; it stays asleep without a hitch, and wake-up is flawless.
There is nothing in the console log that would tell me why the auto sleep doesn't function. I deleted the sleep plist and re-set, but again, no change.
Any ideas? Not sure what could signal the system to not do auto-sleep?
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Cheers,
Dan

Exactly the same problems as those described above: forced sleep works (by using the power button or closing the lid) but automatic sleep doesn't (using 'Energy Saving' preferences).
Tried every single piece of advice here and on other posts: reset PRAM/ SMC, verified disc, repaired permissions, deleted the power saving preference files, cleared caches & history, restarted in every conceivable mode... The only things that worked were safe boot and creating a new user account which means it must be a software issue.
Disabled/ removed/ paused/ reinstalled every piece of software I could but to no avail. The most frustrating thing? Having to wait for 5 mins every time I tried something to check whether the damned thing was going to go to sleep.
In the end, and in desperation, I took the advice of Dino X and downloaded PleaseSleep. Success! A genius piece of software. It forces sleep when the Energy Saver preferences cut in but, even if I don't set exceptions, it won't force sleep if there's a DVD playing (for example).
Only had the Mac for a few months and I'll never go back to that other, unmentionable operating system; the Mac's just too good but I'm vexed that I'm having to use third party software to get it to work as it should (and was) - feels like a bit of a Win*s solution to me.

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Dual 2.5 G5 won't auto sleep

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