I have a G5 PPC running 10.4.  

I believe at one time it used to go into sleep mode.  But now it
doesn't.  The Energy Saver is set to put the display to sleep after 15
minutes and the computer to sleep after one notch to the right of 15
minutes.  The hard drive sleep check box below the two sliders is
checked to put the drives to sleep when possible.

I have unplugged the USB headset microphone, the USB printer, the USB
scanner, USB pallette, and USB controlled UPS.   A firewire external
hard drive is connected but turned off.  Only the keyboard and
trackball is connected via USB.

The monitor times out after 15 minutes but I can hear that the hard
drive and fan are never turning off and I hear this loud click every
couple minutes making me worry that not only am I wasting energy
leaving the computer running but I am also wearing out some mechanical
part. 

I can manually put it into sleep mode by selecting Sleep from the
Apple Menu.

How do I trouble-shoot this?  

\Samson

In article <6gjgs15cqh2qdv0f3esqod12avk64ag503@4ax.com>,
 Samson <nospam@nospam.com> wrote:

> I have a G5 PPC running 10.4.  
> 
> I believe at one time it used to go into sleep mode.  But now it
> doesn't.  The Energy Saver is set to put the display to sleep after 15
> minutes and the computer to sleep after one notch to the right of 15
> minutes.  The hard drive sleep check box below the two sliders is
> checked to put the drives to sleep when possible.
> 
> I have unplugged the USB headset microphone, the USB printer, the USB
> scanner, USB pallette, and USB controlled UPS.   A firewire external
> hard drive is connected but turned off.  Only the keyboard and
> trackball is connected via USB.
> 
> The monitor times out after 15 minutes but I can hear that the hard
> drive and fan are never turning off and I hear this loud click every
> couple minutes making me worry that not only am I wasting energy
> leaving the computer running but I am also wearing out some mechanical
> part. 
> 
> I can manually put it into sleep mode by selecting Sleep from the
> Apple Menu.
> 
> How do I trouble-shoot this?  
> 
> \Samson

I don't have clue to this problem either. I have 3 Macs, G4 450, G4 933 
& G4 iMac 1.25GHz, and none of them will auto sleep.  The 3 machines 
have range of some to none of the following devices in different 
combinations:

PCI USB 2.0 card
SCSI 2930CU card
ATI IDE controller card
USB hubs powered
MIDI interface via USB
Griffin iMic USB
USB HP Printer
USB keyboards & mice
all ethernet connected wired

I lost the auto sleep several OSX versions back and have never regained 
it.  They all SLEEP manually.  Removing everything but keyboard & mouse 
does not solve it. I have on occasion removed the internal cards too but 
no luck. 2 currently run Tiger 10.4.2 and the older 450 is 10.3.4.

Could be some errant driver for the cards, or USB device or some 
software trying to do something, poling some bus or port. They all used 
to auto sleep at some point in the past.

I know the PCI USB 2.0 card doesn't like ANYTHING connected to it and 
then an attempt to SLEEP.

I give up. Personally I thing the auto sleep feature is just plain 
buggered. I just manually sleep them when I want to do that. Hope you 
figure yours out. Sounds like you've tried the obvious like I have.


Good luck,

Morenuf
-- 
morenuf@nobodyhome.com.invalid

>> How do I trouble-shoot this?  
>> 
>
I'm hoping that some Unix guy could tell me what file to look at, and
what to look for.

\Samson