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Set CHUD Nap setting at startup System
After installing Apple's CHUD tools (explained in the middle of this page), users have discovered the "Nap" preference setting in the Hardware preference panel. Enabling this setting can lower operating temperatures and heat in your system by cycling down the CPU during idle time. However, rebooting the computer resets this setting. By adding this little AppleScript to your login items, you can create a permanent setting for this.
-- Install Apple CHUD
-- This script enables processor NAP mode for power savings
--
do shell script "hwprefs cpu_nap=1"
[robg adds: I haven't tested this by restarting, but I do seem to recall that the Nap setting was lost after the 10.3.4 update reboot...]
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Set CHUD Nap setting at startup | 9 comments | Create New Account
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Set CHUD Nap setting at startup
Authored by: abderrahman on Jun 03, '04 12:13:28PM

On my G4 Quicksilver 933 Mhz, both Jaguar and Panther don't reset Nap: it is always checked within the panel.



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Set CHUD Nap setting at startup
Authored by: abderrahman on Jun 03, '04 12:16:35PM

Rahter, I was thinking: unchecking Bus Speed and Altivec, it's only an handicap, or can it carry some benefit otherwise?



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Set CHUD Nap setting at startup
Authored by: jdos2 on Jun 08, '04 09:30:29AM

On my laptop "Nap" is constantly checked.

On my desktop (Dual 1.25 MDD) my system locks up hard after some time of intense activity. I can compile Mozilla fine but when I edit large pictures (my negative scans are upward of 250MB!) the system locks up- doesn't handle interrupts anymore. Dunno why. It's already had a motherboard for a similar problem last year (but that was without a "nap" setting)

---
2001 Moto Guzzi V-11 Sport
1999 Triumph Trophy (Shop Bike) 1200



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Set CHUD Nap setting at startup
Authored by: agallisa on Jun 03, '04 06:28:42PM

hmmm... on my Dual G5 running 10.2.4 the correct syntax is

do shell script "hwprefs cpunap=false"

or

do shell script "hwprefs cpunap=true"



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Set CHUD Nap setting at startup
Authored by: heynnema on Jun 03, '04 10:55:14PM

If you go into terminal, and type:

hwprefs

you'll see that cpu_nap is correct, not cpunap.

Now if you type:

hwprefs cpu_nap

you'll see that it returns a 0 or a 1 (equiv to false or true)

So, you can use either:

hwprefs cpu_nap=0 (or 1)

hwprefs cpu_nap=false (or true)

Cheers, Al



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Set CHUD Nap setting at startup
Authored by: heynnema on Jun 04, '04 06:10:26AM

Oh, I just noticed that you said "Dual G5 running 10.2.4"!!

Not even 10.2.8! On a G5!! Sheesh. Update, and/or get 10.3.n.

The syntax on an old OS and old CHUD may, in fact, be different.



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Set CHUD Nap setting at startup
Authored by: iShawn on Mar 28, '05 02:26:55AM

I might seem a little elementary, but I am running 10.3.8 and have this problem when recording with a firewire music interface. I wanted to enable this at startup... and I seem to try it but I don't have any luck when I go to applescripter and type that in and run it... it always returns a 1... even when typing false or 0. Do I have to compile it? I tried this too, but still got a "1" in the box below the script... and when that is defeated:

How do I add it to my "login items?"
Is this dictated at http://www.macosxhints.com/article.php?story=20050316020738829&query=startup+library



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Set CHUD Nap setting at startup
Authored by: lucidsystems on Jul 10, '06 04:29:37AM
This link may help you.

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Set CHUD Nap setting at startup
Authored by: lucidsystems on Jul 10, '06 04:24:48AM
This link may help you.

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