New iMac 24" Grey - Energy Saver Issue

Question

10.4.10
2.4Ghz Intel Core 2 Duo
1GB 667 Mhz DD2 SDRAM
Boot Rom 1M71.007A.B00
Model Ident: iMac7,1
*The Energy Saver is having issues*
Put the Computer to sleep when it is inactive for - set to Never
Put the display to sleep when it is inactive for - set to Never
Unchecked - Put the hard disk(s) to sleep when possible
The reason I have the above set the way I have it is cause I'm running some performance tests... however, every 2-3 minutes the Screen is turned off, the Hard drive is turned off and the computer is put to sleep. It's doing exactly the opposite of what I want it to do. Which then in turns puts a massive hit on the performance results every time the computer goes to sleep.... even though it's told not to go to sleep, I'll even click the lock to lock it down but that doesn't matter, it still goes to sleep 2-3 minutes later.... AND it doesn't matter if the mouse moves to keep it active.
Is there a Fix for this?
I ran the software update and it doesn't do much. But in the end it still does the same thing.
I've reinstalled the OS several times but that doesn't fix the issue.
Again to reiterate,
Energy Saver window in the System Preferences
Sleep Tab
both sliders set to Never and Hard Drive is set to NOT go to sleep (as it's unchecked)
I have other iMacs some older some the same, all work as told, except this one.

Answer 1

WyldB wrote:
When I performed the following : *pmset -g* (via terminal) This is what I got:
Active Profiles
AC Power -1*
Current in Use:
disksleep = 0
hibernatemode = 0
displaysleep = 0
powerbutton = 0
womp = 0
sleep = 0
autostart = 0
hibernatefile = /var/vm/sleepimage
Yep, that seems to agree with your Energy Saver preference settings. It would be surprising only if they did not match . It appears that the GUI and pmset are working with the same preference file (as they should).
*sleep = 0* <----------> Put the Computer to sleep when it is inactive for - set to Never
*displaysleep = 0* <----> Put the display to sleep when it is inactive for - set to Never
*disksleep = 0* <-------> Unchecked - Put the hard disk(s) to sleep when possible
OTOH, I would have expected see one additional line: "*halfdim =* \[0 or 1\]" -- controlled by:
*Energy Saver > Options > "Automaticaly reduce the brightness ...yada, yada"*
I'm also running 10.4.10 (but on a white C2D). When I set my preferences to match yours, pmset -g always lists "halfdim = 0" or "halfdim = 1", as expected. Kinda strange that yours doesn't list it.
I presume you've followed den.thed's good advice on resetting the SMC, so the only things I can think of would be:
\- Make sure Screen Saver is set to 'Never' ... but I'm guessin' you already did that
\- Delete the Energy Saver preferences and scheduled events files (make copies first!), then immediately shutdown and reset the SMC ...yet again!
Here's where the Energy Saver preference and schedule files live (from "man pmset"):
+All changes made through pmset are saved in a persistent preferences file (per-system, not per-user ) at+
/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
+Scheduled power on/off events are stored separately in+
/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist
+pmset modifies the same file that System Preferences Energy Saver modifies.+
I wonder if the EFI ROM is old, and needs updated.
I don't think there have been any EFI updates for the 2.4 GHz iMacs -- but I'm sure someone here could confirm/correct that.
...who knows what evil lurks in the mind of pmset?
Looby