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iMac G5 sleep problem

Message #1 - Posted 2006/07/31 - Evan Z

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

I've run Disk Utility, Techtools Deluxe (the one that comes with AppleCare), and the Apple Hardware Test, and everything's come up fine.

I have a few questions:

1. Is this something that a reinstall of the OS might solve? 2. Is this something that Disk Warrior might solve? (I don't have it (yet) or I would have tried it already.)
3. Is this a big deal at all? It's not a huge problem for me to not put the computer to sleep and to shut it down completely more often. But I wouldn't want just to ignore something now that might turn into a bigger problem later.

Any suggestions or advice about any of this would be much appreciated. Thanks!

-ez

Message #2 - Posted 2006/07/31 - matt neuburg

Evan Z wrote:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

I've run Disk Utility, Techtools Deluxe (the one that comes with AppleCare), and the Apple Hardware Test, and everything's come up fine.

I have a few questions:

1. Is this something that a reinstall of the OS might solve? 2. Is this something that Disk Warrior might solve? (I don't have it (yet) or I would have tried it already.)

Try deleting these files (preferably in single-user mode):

/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist ~/Library/Preferences/com.apple.systemuiserver.plist Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist

If that doesn't help I would also try zapping the PRAM and resetting the SMU.

matt neuburg, phd = matt@tidbits.com, http://www.tidbits.com/matt/ Tiger - http://www.takecontrolbooks.com/tiger-customizing.html AppleScript - http://www.amazon.com/gp/product/0596102119 Read TidBITS! It's free and smart. http://www.tidbits.com

Message #3 - Posted 2006/07/31 - Evan Z

matt neuburg wrote:

Evan Z wrote:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

I've run Disk Utility, Techtools Deluxe (the one that comes with AppleCare), and the Apple Hardware Test, and everything's come up fine.

I have a few questions:

1. Is this something that a reinstall of the OS might solve? 2. Is this something that Disk Warrior might solve? (I don't have it (yet) or I would have tried it already.)

Try deleting these files (preferably in single-user mode):

/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist ~/Library/Preferences/com.apple.systemuiserver.plist Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist

If that doesn't help I would also try zapping the PRAM and resetting the SMU.

Thanks! I'll give it a try.
-ez

Message #4 - Posted 2006/07/31 - Malcolm

On 2006-07-31 08:37:06 -0400, Evan Z said:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

I've run Disk Utility, Techtools Deluxe (the one that comes with AppleCare), and the Apple Hardware Test, and everything's come up fine.

I have a few questions:

1. Is this something that a reinstall of the OS might solve? 2. Is this something that Disk Warrior might solve? (I don't have it (yet) or I would have tried it already.)
3. Is this a big deal at all? It's not a huge problem for me to not put the computer to sleep and to shut it down completely more often. But I wouldn't want just to ignore something now that might turn into a bigger problem later.

Any suggestions or advice about any of this would be much appreciated. Thanks!

-ez

It could be a USB problem. Try it with all USB devices and hubs (including the monitor if it has a USB cable) removed except the keyboard and mouse. If it works then, try adding the USB devices back, on at a time.

Message #5 - Posted 2006/07/31 - Evan Z

matt neuburg wrote:

Evan Z wrote:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

I've run Disk Utility, Techtools Deluxe (the one that comes with AppleCare), and the Apple Hardware Test, and everything's come up fine.

I have a few questions:

1. Is this something that a reinstall of the OS might solve? 2. Is this something that Disk Warrior might solve? (I don't have it (yet) or I would have tried it already.)

Try deleting these files (preferably in single-user mode):

/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist ~/Library/Preferences/com.apple.systemuiserver.plist Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist

If that doesn't help I would also try zapping the PRAM and resetting the SMU.

It looks to me like I don't have a file called "AutoWake.plist"; at least, it's not visible in the SystemConfiguration folder and spotlight doesn't find it. Is that unusual and might that be the problem? If so, any suggested solutions?

I do think that my computer was asleep until I *tried* to wake it up--it's only at that point that it shut down (after I moved the mouse or hit the shift key or something).

As you can see, I'm no expert. Thanks in advance for any help.

-ez

Message #6 - Posted 2006/07/31 - Evan Z

Malcolm wrote:

On 2006-07-31 08:37:06 -0400, Evan Z said:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

I've run Disk Utility, Techtools Deluxe (the one that comes with AppleCare), and the Apple Hardware Test, and everything's come up fine.

I have a few questions:

1. Is this something that a reinstall of the OS might solve? 2. Is this something that Disk Warrior might solve? (I don't have it (yet) or I would have tried it already.)
3. Is this a big deal at all? It's not a huge problem for me to not put the computer to sleep and to shut it down completely more often. But I wouldn't want just to ignore something now that might turn into a bigger problem later.

Any suggestions or advice about any of this would be much appreciated. Thanks!

It could be a USB problem. Try it with all USB devices and hubs (including the monitor if it has a USB cable) removed except the keyboard and mouse. If it works then, try adding the USB devices back, on at a time.

Thanks for the suggestion. The only USB device I have is my mouse and keyboard. It's an iMac, so no monitor.

I'm pretty baffled at this point, and I just set it to never sleep.

-ez

Message #7 - Posted 2006/08/03 - CaliDervish

Evan Z wrote:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

have you looked here:
http://www.apple.com/support/imac/repairextensionprogram/

might you have that issue?

Cali

Message #8 - Posted 2006/08/03 - Evan Z

CaliDervish wrote:

Evan Z wrote:

Hi all--I hope someone can help me out with this. Each of the last two times I've put my iMac G5 (running 10.4.7) to sleep, it's shut down completely on its own. When I start it up again there seems to be no problem.

have you looked here:
http://www.apple.com/support/imac/repairextensionprogram/

might you have that issue?

Thanks--I might, since my serial number falls within the range of affected computers.

It's definitely a hardware issue. I tried all the suggestions offered here (thanks again for all of those) and then, at the suggestion of Applecare support, I reinstalled the OS but the problem remained.

The Applecare guy decided it's the logicboard that needs to be replaced, but I live 100+ miles from an authorized service provider. I was trying to figure when I'd have time to make this drive when, to my surprise, Apple offered to send someone (from Qualxserv or something like that) to my home to make a house call.

Applecare told me that someone official needs to see it before Apple can replace it.

-ez

Message #9 - Posted 2006/08/13 - daniel_t

Evan Z wrote:

It's definitely a hardware issue. I tried all the suggestions offered here (thanks again for all of those) and then, at the suggestion of Applecare support, I reinstalled the OS but the problem remained.

I don't think it's a hardware issue. I have the same problem and it started when I updated to 10.4.7. Earlier versions of 10.4 didn't have the problem. How about you, is this the case with you as well? I was hoping Apple would release a patch to fix it but nothing yet. I'm going to try reinstalling from disk at some point to see if I'm right. I almost never put my computer to sleep anyway (it operates as a printer server for all the computers in the household) so I haven't bothered to look deeper into the issue.

If you happen to reinstall from the disks that came with your computer and the problem goes away, and then comes back when you update to the newest version. Let me know.

Thanks.

Message #10 - Posted 2006/08/14 - Evan Z

daniel_t@earthlink.net wrote:

Evan Z wrote:

It's definitely a hardware issue. I tried all the suggestions offered here (thanks again for all of those) and then, at the suggestion of Applecare support, I reinstalled the OS but the problem remained.

I don't think it's a hardware issue. I have the same problem and it started when I updated to 10.4.7. Earlier versions of 10.4 didn't have the problem. How about you, is this the case with you as well? I was hoping Apple would release a patch to fix it but nothing yet. I'm going to try reinstalling from disk at some point to see if I'm right. I almost never put my computer to sleep anyway (it operates as a printer server for all the computers in the household) so I haven't bothered to look deeper into the issue.

If you happen to reinstall from the disks that came with your computer and the problem goes away, and then comes back when you update to the newest version. Let me know.

I did reinstall from my Tiger disk but I didn't think to check the sleep issue before I upgraded to 10.4.7. I do know that I'd been using 10.4.7 with no problems for awhile before the sleep problem started. In any event, reinstalling didn't help. The sleep problem remained.

Apple then told me that I needed to replace the logicboard, which they wouldn't let me do on my own. They sent a tech guy to fix it, but before he replaced the logicboard he decided to replace the power supply, just to see if that made a difference. It solved the problem, at least for now.

Strangely enough, I'd already replaced the original power supply about a year ago, after my iMac got way too hot and smelled like it was about to burst into flames. In the 18 months or so that I've had this computer, I've had to replace the hard drive once, the midplane once, and the power supply twice. The hardware's been defective but the customer support has been pretty good.

Hope this helps,
-ez

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