High-pitch With Firewire Options

[iShawn]

Have you tried swaping out firewire interface cables-some are more equal than others.

I've tried this. The cable makes no difference.

[editbrain]

i have had the same problem. i have had 4 G5 from apple. they replaced them because there is a power distribution problem. the whine you here is from the CPU in the G5 not having enough power. The power supplies in the G5 are crap in my opinion.
you can download the chud tools and uncheck a box, but it will not remember you setting so everytime you boot your computer you will have to go into sys prefs and uncheck this box, or deal with the whine. but why should we have to do a fix like this when we paid large sum of money to have a working computer. i have found that apple likes to sell and idea, get the money and then build the product in the 3 or 4 rev that works.
just like i ordered logic 7.1 on april 6. they tell me my order has been delayed until may 19. what the hell. so they sold me software that wasn't even developed yet. i paid for sudo code.
i tell you. i have some very convencing audio from a exec customer sales rep from california saying some really bad things about apple and there execs in a heated conversation about this whine problem. i think i might just make it public.

[lepetitmartien]

You need to install the developer tools to install CHUDs. Next it's the "NAP" checkbox in the specific system preference "processor.prefpane"

This post has been edited by lepetitmartien: Fri 29 Apr 2005, 19:55

[cornutt]

Seems like there ought to be an Open Firmware command to set that setting and make it stick...

[arvidtp]

I got this whine on my powerbook with my new firebox and it is coming through the builtin audio out
111111111111111111111111111111111111111 ahh! i leaned on my other keyboard! oops. anyway it is OK when i unplug the builtin audio out. But i would like to be able to keep it plugged into my mixer... Downloading CHUD right now (There was a guy on one of my school baseball teams nicknamed Chud...) maybe I'll try to write a UI scripting applescript to set turn off nap at login if it is possible to do so? If i can make it work I'll put it up for y'all.

by the way, which versions of CHUD run on panther? 4.1.1? 3.5.2?4.2.0a15? I assume that the later is not a final release - does the a stand for alpha? cant find any info on apple's site.

This post has been edited by arvidtp: Thu 9 Jun 2005, 18:15

[iShawn]

I tried doing this so myself but had no luck doing so. The part that I don't like the having to install XCode just to use the CHUD stuff... and when I tried that, the version of CHUD that came with the computer didn't show up in the status bar and work for me... the install CD which it came from was for OS 10.3.4

I do wish you luck with this.

Hell... with the new processors I am sure this will be nonexistent. I've learned to cope with it (can't hear it with headphones on) but am also considering to make an IsoBox. To buy them is too expensive for my tastes.

This might help too... http://www.macosxhints.com/article.php?sto...4620&query=chud

This post has been edited by iShawn: Thu 9 Jun 2005, 21:09

[ourmanflinty]

Did anyone get to try swapping power supplies on their powerbooks? Laptops are double insulated, no earth, so hooking up to a studio and suddenly finding noises and maybe even a tingle in your fingers would mean you could have earthing / power supply problems..I've had serious buzz noises when using landline phones and typing / surfing at the same time with the mains lead plugged in, not when on battery, shortly before my mains lead burst into flames! I kid you not, little blue flames right where it went into the mains plug. I chopped off the plug, stripped back and fitted a standard uk 3 pin mains to it and all is well, no noise anymore...A sure sign would be charging problems or the little light on the power plug not lighting when you plug it in or going intermittent.

[fictionmusic]

I use an older version of CHUD tools as the newer ones contain a lot of stuff i don't need. The version I am running on my g5 2x2 with OSX 10.3.9
is CHUD 3.5.1 and it works fine. I am not sure if it is still available or not from Apple but is worth looking for, and it doesn't need any additional software to be installed (like x code etc)

All I can say is, it makes my mac, which otherwise is a whing, chirping little monster, dead quiet. I have a totally grounded system, so it is nothing to do with faulty grounding in my studio, it is a mac problem and one I heard was not cured by changing the power supply.

Whatever, I hope it gets worked out, good luck!

[arvidtp]

cool - it works! (CHUD 4.1.1 - I already had developer tools installed so I dont know if they needed to be or not). My powerbook is now (largely) silent when plugged in. Bravo!

And here are some "Napplescripts" i whipped up (easier than i thought because they include a commandline tool for the processor control)

http://files.arvidtp.net/napplescripts.dmg

Put "Nap Off" in your startup items and you are good to go without your mac being so babyish, napping and whining all the time