iMac G5 sleep problem

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Evan Z

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Jul 31, 2006, 8:37:06 AM7/31/06
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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

matt neuburg

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Jul 31, 2006, 12:42:15 PM7/31/06
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Evan Z <n...@mail.please> 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 = ma...@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

Evan Z

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Jul 31, 2006, 12:52:01 PM7/31/06
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matt neuburg wrote:
> Evan Z <n...@mail.please> 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

Malcolm

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Jul 31, 2006, 1:25:11 PM7/31/06
to

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.

Evan Z

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Jul 31, 2006, 2:17:02 PM7/31/06
to
matt neuburg wrote:
> Evan Z <n...@mail.please> 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

Evan Z

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Jul 31, 2006, 7:57:24 PM7/31/06
to
Malcolm wrote:
> On 2006-07-31 08:37:06 -0400, Evan Z <n...@mail.please> 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

CaliDervish

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Aug 3, 2006, 4:28:30 AM8/3/06
to

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

Evan Z

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Aug 3, 2006, 4:07:50 PM8/3/06
to

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

dani...@earthlink.net

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Aug 13, 2006, 8:45:47 PM8/13/06
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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.

Evan Z

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Aug 14, 2006, 12:22:58 PM8/14/06
to

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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