MacBook 'Moo' Fix? [Archive] - MacRumors Forums

MacRumors

Jun 30, 2006, 04:20 PM

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MacRumors user "netdog" reports that he has successfully been able to get rid of his MacBook's "moo" issue by resetting his Power Management Unit (PMU). The steps he took were:

1. Shutdown and disconnect power.
2. Remove battery.
3. Hold down power button for more than 5 seconds.
4. Reinsert battery and reconnect power.
5. Boot.

Detailed information on resetting the PMU on MacBook and MacBook Pros is available via Apple's Support site (http://docs.info.apple.com/article.html?artnum=303319). Resetting the PMU should only be considered in last-case scenarios, and should not be done more than once every 48 hours.

Disclaimer: Users should proceed at their own risk, as MacRumors cannot be held liable for damages that may be caused by following the instructions listed above. MacRumors has not independently tested the above procedure as such resources are unavailable, but the tip is rather offered as a courtesy. Users are strongly encouraged to contact their AppleCare support representative and consult Apple's documentation for guidance if following the aforementioned steps.

Digg this story (http://digg.com/apple/MacBook_Moo_Fix_by_resetting_PMU)

macaddict06

Jun 30, 2006, 04:23 PM

Pistol Pete

Jun 30, 2006, 04:24 PM

I thought it was already fixed...hope to see some positive responses!

netdog

Jun 30, 2006, 04:28 PM

This information came from Apple online support, just so everyone knows. I am confident that it won't harm anyone's system, and is obviously an Apple feature that they don't document for us. After 3.5 hours, I have heard two Moos. When I called them, it was mooing incessantly, much like in the recent video...on/off/on/off. It was just awful.

lars steenhoff

Jun 30, 2006, 04:32 PM

netdog

Jun 30, 2006, 04:38 PM

Yes, this is also what apple instructed me to do over the phone.
It seems to lessen but not completly remove the noise from the cpu.
The software quiet mbp completly removes the noise, at the cost of heat and battery life.

hope the next generation of intel chip will be more quiet.

Now that I have experienced this for myself, I am sure that it was the fan going on and off, and not the chip. My guess is a firmware update will really nail this problem, and I wouldn't be surprised to see one soon.

What was really curious for me is that I had a silent MB bought in the first week of its release. It was only with 10.4.7 that it started to moo, and was doing so like mad. Like I said, I have been pushing the processor quite hard, and have only heard the fan whir twice, which while not as good as it once was, is a HUGE improvement over how it was before I did what Apple suggested.

I am really curious to see if this helps people who had the moo prior to 10.4.7

All that I can say for sure is that it has really helped me.

Fearless Leader

Jun 30, 2006, 04:40 PM

...hope the next generation of intel chip will be more quiet.

its not intel's fault your computer is noisy, its apples

nagromme

Jun 30, 2006, 04:43 PM

"Mooooo?"

I haven't heard the "moo" (no Intel Mac for me yet), but that sounds kind of cool :)

How can I enable the Moo feature if I get a Mac that doesn't have it by default?

Roads0

Jun 30, 2006, 04:47 PM

I just got my Macbook on Monday and I have no Moo. Actually, I've noticed thta the fan doesn't even come on when it gets really hot. Maybe Apple has fixed the problem with the Macbooks shipping now?

netdog

Jun 30, 2006, 04:50 PM

I just got my Macbook on Monday and I have no Moo. Actually, I've noticed thta the fan doesn't even come on when it gets really hot. Maybe Apple has fixed the problem with the Macbooks shipping now?

Mine was bought two days after the MB was first released, and it was dead-silent until 10.4.7

QCassidy352

Jun 30, 2006, 05:32 PM

jbouklas

Jun 30, 2006, 05:47 PM

Funny, my MacBook always mooed, and the power adapter whined. As of two weeks ago, my power adapter AND MacBook both whine, and it still moos. The 10.4.7 update did nothing for either of them. Then, I tried to reset the PMU just now- still no help. I have AppleCare, so once I know that they fix the problem, I'll call them about it. I'm already on my second MB- returned my first a week or two after I bought it for an exchange, same problems. So, I'll wait it out.

-Jim

Stella

Jun 30, 2006, 06:04 PM

lol - MMMMMOOOOOOOOOOO!!11oneone

Wonder if these MacBooks can catch Mad Cow disease too ( BSE ) :-)

artifex

Jun 30, 2006, 06:31 PM

lol - MMMMMOOOOOOOOOOO!!11oneone

Wonder if these MacBooks can catch Mad Cow disease too ( BSE ) :-)

I think maybe they used the same vendor for the motherboards (sorry, y'all call them logic boards) as Gateway :)

Macworld's latest issue seems to claim none of these problems are a big deal.
Of course, they also are just now reviewing the MB. Yet another reason for me not to renew my subscription...

solvs

Jun 30, 2006, 06:37 PM

I've heard of this mooing thing, but never actually heard the actual mooing itself. Is it like one of those toys where you pull the thing and it moos when it lands on the cow? Or like one of those baby or dog toys that lets out a mooing noise when you squeeze it?

Now I'm curious.

Lixivial

Jun 30, 2006, 06:39 PM

I'll try it, though I've noticed significantly less mooing in 10.4.7, with only one received in an un-air conditioned room. It was a lot quieter than when I initially purchased it.

JackSYi

Jun 30, 2006, 06:51 PM

My MacBook seems quieter after 10.4.7 too.

QCassidy352

Jun 30, 2006, 06:57 PM

No, it did not work for me. Thanks for the try tho, netdog.

On the plus side, my macbook does not heat up to the requisite temperature (about 68 C core temp) very easily at all with 10.4.7, so it's really not much of a problem anyway. Running photobooth used to heat it up that much, but no longer does.

edit: actually... it seems worse now. Not louder, but as I said, after 10.4.7, the moo didn't start until about 68 C. Now, after resetting the PMU, the moo starts at about 65 C, and that makes a big real-world difference in terms of how often I hear it. :(

D3LM3L

Jun 30, 2006, 07:43 PM

I do feel bad for everyone with a mooing MacBook, but I just broke out in laughter when I heard a clip of it! Anyone else do the same thing when they first heard the sound?

it5five

Jun 30, 2006, 08:22 PM

I'm not that bothered by the moo. I'll just wait until a firmware update or something I guess.

When I first heard it I was really surprised at how lifelike a moo it is.

solvs

Jun 30, 2006, 09:35 PM

I do feel bad for everyone with a mooing MacBook, but I just broke out in laughter when I heard a clip of it! Anyone else do the same thing when they first heard the sound?
Where'd you hear it?

4screen

Jun 30, 2006, 09:57 PM

"Mooooo?"

I haven't heard the "moo" (no Intel Mac for me yet), but that sounds kind of cool :)

How can I enable the Moo feature if I get a Mac that doesn't have it by default?

My wife suggests you try and milk it. :)

QCassidy352

Jun 30, 2006, 11:35 PM

ugh, I really wish I'd just left well enough alone. My macbook seems to reach 65 C quite easily, but 68 C not nearly so easily. Meaning now I'm hearing the "moo" just doing regular tasks whereas I did not. (I put moo in quotations because mine really doesn't sound like a moo... just like fans ramping up and down over and over. Which is just about as bad, IMO.)

So let me warn you all, try this PMU reset at your own risk. :(

reallynotnick

Jun 30, 2006, 11:40 PM

The moo is found here:
http://video.google.com/videoplay?docid=-4490733167064230159

Seems the fan goes On,Off,On,Off ect ect.

gotohamish

Jul 1, 2006, 12:45 AM

The moo is found here:
http://video.google.com/videoplay?docid=-4490733167064230159

Seems the fan goes On,Off,On,Off ect ect.

Is it me, or is there no "mooing" in that clip? I don't get it.

colonels1020

Jul 1, 2006, 01:28 AM

so far, no mooing. I still have the annyoing whine though.

EDIT: It just mooed again. Oh well.

mugtastic

Jul 1, 2006, 01:40 AM

did the reset. no change. osx update no change.

my white 2ghz macbook has started and stopped its fans in quick succession between 64 and 65 degrees since i got it. im sure thats what they are set to do. the reason some can't hear it in person or in the video clip imho is because you are not as sensitive to the sound as some other people. its about as loud as a whisper. in a quiet room a whisper is perfectly audible.
a small motor revving up and down could be decribed as a "moo" sound.

apple needs to send out a fix so the fans go on low but steady at an appropriate temp. like mine do now at 70 degrees.

i think apple thought setting it this way would pre empt constant fan noise at light loads like surfing the net and they would be hailed as having an even quieter notebook computer. they were wrong.

it is a great computer though.

netdog

Jul 1, 2006, 03:31 AM

Well, at least it is helping some of us. 5 yes to 7 no so far.

I am curious. What is the danger of resetting the PMU? AppleCare certainly didn't ask me if I was backed up or anything before instructing me to go through this procedure.

FWIW, my moo is still gone.

Paranoidmarvin

Jul 1, 2006, 05:07 AM

Is it me, or is there no "mooing" in that clip? I don't get it.

I can't hear it either

rodpascoe

Jul 1, 2006, 05:13 AM

I can't hear it either

Turn your volume up REALLY load and near the end of the clip when all that's happening is you're watching the fan spin you'll hear it MOO. It's more of a moo/whoosh really and not that loud. Must still be annoying though......:eek:

MrCrowbar

Jul 1, 2006, 08:05 AM

;-E

I did the reset thing and now I have the moo (fan goes on for a second). But luckily, it's not as disturbing as the porcessor whining (you know, the one that goes away when you run photo booth). Or maybe I neever really noticed the moo before... I meant the hard drive spinning makes a more disturbing noise than thos mooing fans.

I'm hoping for a patch that makes the whining stop. I even hear in when in my bed. Running photo booth all the time is uncool, especially the iSight LED is disturbing. I wish I could us the standby LED for HDD activity and the iSight thing for CapsLock... Has anyone found a hack for this?

asherman13

Jul 1, 2006, 01:25 PM

So far, no mooing! I also happened to shut it down before I went to bed because I wasn't sure about resetting the PMU and so I wanted to sleep on it. When I woke up, I reset the PMU and everything's alright, albeit the fact that I have to resize windows and enter passwords (and totally reconfigure my Dashboard :mad: ).

Having a cooled-down MBP might also be helping; I had left the window open during the night and my Mac was pretty cool this morning.

lexus

Jul 1, 2006, 02:22 PM

That was on www.moobook.com ages ago!

madmax_2069

Jul 1, 2006, 03:24 PM

its not the motor making that sound

all it is is the design of the fan blades when they reach a sertian speed and since it goes on and off over and over it gives it the moo sound.

what will fix the mooing is a redesigned fan blade or to make the current not spin so fast, it seem's to be getting stuck in a cycle after it reaches a sertian temp

all they need to do is redesign the fan blades. the way it look's is they are a hybrid os a squirl cage fan and a normal fan looks as if they was trying to hit 2 birds with one stone a fan that will push air threw the intakes and into the heatsink and to push the air around the case.

what they need to do it have a secondary fan to push the air around the case and one dedicated to the cpu. that will allow them to not run the a single fan so hard to make that noise.

have you seen those fans insude a dreamcast. they are small and can push a good amount of air and not make much noise cause it dont need to run hard like it does in the dreamcast. i cant remember the sixe of that fan in the dreamcast. and the other fan for the cpu wouldent need to run so hard cause it would not need to since it would be dedicated to the cpu only.

another thing would be to have the pass threw air from the heatsink taken out of the case insted of letting heated air sirculate threw the case and heating up the rest of the insides

sorry for my constant running at the mouth but that is what i see they need to change about the Macbook

njmac

Jul 1, 2006, 03:29 PM

The moo is found here:
http://video.google.com/videoplay?docid=-4490733167064230159

Seems the fan goes On,Off,On,Off ect ect.

Even with the volume turned all the way up, I can't hear any mooing in that clip.

Here (http://www.appledefects.com/media/moo.mp3) is an MP3 where you can hear the moo clearly.

macbrooke

Jul 1, 2006, 03:42 PM

WillMak

Jul 1, 2006, 04:35 PM

Now that one I could hear.. no wonder so many of you are frustrated.
Why won't apple address this or find a finite fix?

Because according to apple, the moo is "within spec."

Counterfit

Jul 1, 2006, 04:37 PM

solvs

Jul 1, 2006, 08:50 PM

Here (http://www.appledefects.com/media/moo.mp3) is an MP3 where you can hear the moo clearly.
Ok, that one I could hear it. That is annoying. I've heard other fans make similar noises, but that's pretty unacceptable. Shouldn't be stopping and starting like that either. I'm sure Apple will be replacing the really bad ones if this doesn't fix it, but they'll probably be quiet about it like usual, which will actually hurt them more.

The CPU seems kinda hot in the vid, but my iMac hovers around the mid 60's too. The hd around 50. I've been told that's normal, but it seems hot to me, and seems really hot in a laptop.

WillMak

Jul 1, 2006, 09:03 PM

Ok, that one I could hear it. That is annoying. I've heard other fans make similar noises, but that's pretty unacceptable. Shouldn't be stopping and starting like that either. I'm sure Apple will be replacing the really bad ones if this doesn't fix it, but they'll probably be quiet about it like usual, which will actually hurt them more.

My first MB was even louder than that audio file. In fact, it was loud enough that I couldn't use it at the library without people constantly looking at me. When I bought it in to the apple store, the genius REFUSED to acknowledge it as a problem and would not let me exchange it (some people had better luck/nicer geniuses on here tho). Luckily my macbooks trackpad button was not very responsive so he allowed me to exchange it for that.

mugtastic

Jul 1, 2006, 10:51 PM

its not the fan blades 'cause its a quiet fan when running steadily. mine goes steady at around 70 degrees. its obviously the revving up then down caused by setting the on and off temp. too close (seems to be 64 degrees for me). seems like a simple fix if they bother to do it. please bother.

madmax_2069

Jul 2, 2006, 05:07 AM

yea i just herd the mp3 and i herd it way better. yea it soundt like the motor is straining for some reason. like it has more forward momentum than reverse but there is enuff there to make the sound . ever herd a electric motor that was going one way then instantly going the other way . it seem's like that but its like a pulse type of deal the correct way is more then the wrong way but would be enuff of a force to make the motor strain.

but it does sound like its fighting somthing when its spinning. people with a dreamcast should know this sound wile the game disk is in the drive and the unit powered up open the drive thats what im trying to describe but its not as bad in the Macbook cause its a smaller motor that is running the fan. what is it that's in 10.4.7 that controls the fan was is there a firmware update when you update to 10.4.7. somthing could have made the settings for the fan go haywire. shouldent it kick in once it reaches a sertian temp and stay on till it reaches a lower temp that what supost to be the engage temp. mabe somthing set the enguage and shutoff the same temp hell im just guessing here but it should be somthing apple could fix with a firmware update or a OS X patch

skidooairman

Jul 2, 2006, 08:10 AM

Wow,
It stopped my macbook mooing, and also made the bloody thing cooler. My macbook's processor was running at 80 to 85 degrees celcius, now it averages 58!!!!! Wow, thanks for the tip....

MrCrowbar

Jul 2, 2006, 12:22 PM

Wow,
It stopped my macbook mooing, and also made the bloody thing cooler. My macbook's processor was running at 80 to 85 degrees celcius, now it averages 58!!!!! Wow, thanks for the tip....

58°C ??
WTF??
Mine's never below 70° when idling for some time...

JosiahPB

Jul 2, 2006, 12:48 PM

Does anyone else find it funny that MacBooks are "mooing" and growing "spots" at the same time. Is there a possibility of Dell tampering here??

mrwalker

Jul 2, 2006, 05:11 PM

Are you sure it's not "moof"? The Mac has been plagued by dogcows for ages!

skidooairman

Jul 2, 2006, 05:57 PM

58°C ??
WTF??
Mine's never below 70° when idling for some time...

Yeah, I know, I could have turned my macbook around and fried an egg on the back, now it just gets warm to the touch. I can believe it fixed that heat problem so easily.

scottlinux

Jul 2, 2006, 07:15 PM

Even with the volume turned all the way up, I can't hear any mooing in that clip.

Geez guys. The 'moo' happens with the cover on. It is the sound of the air moving from the fan going on, off. on, off, etc. The video simply shows what is causing the mooing. There is no restricted air flow in that video when the cover is off, and hence no mooing sound.

For the record all other PCs with the same core duo chip do not have a fan problem, and run quite a bit cooler. (Dell, Gateways) I'm waiting for later revisions before springing for the macbook.

tivoboy

Jul 2, 2006, 09:03 PM

mugtastic

Jul 3, 2006, 02:23 AM

its not restricted airflow cause it doesn't happen when the fan is blowing air. its the sound of a small motor revving up then down, not being allowed to get up to speed. geez indeed. why are non owners explaining what is going on two feet from my face?
all they have to do is program it to go on at 64 degrees (like it does now - hopefully 68 or69) but wait till it goes down to 50 or something till it turns off (instead of 63 like it does now - causing it to turn off immediatly)

iAlan

Jul 3, 2006, 05:42 AM

Here (http://www.appledefects.com/media/moo.mp3) is an MP3 where you can hear the moo clearly.

MOO

Sorry for those of you with MooBooks but I couldn't stop laughing. Maybe I need to get out more!

My little black MacBook is moo free - maybe my machine is lactose intolerant!

:p

MrCrowbar

Jul 3, 2006, 06:08 AM

So, I finally hear this clip, but what is funny is.

This is EXACTLY the sort of sound that my INTEL IMAC 20" makes when starting up. When I start it up, the fan most likely kicks in, and starts running, and then settles down.

It must ALWAYS be on to some extent, but the moooOOOOOOoeeewww, makes it known about five seconds right at start up. And from WAKE up from sleep.

Apple must use the same fan manufacturer for both IMAC and MacBook.

I sold my 17" Intel iMac on eBay (*) but it didn't moo when waking up. What it did was checking the optical drive and briefl turn the fans on. I think an iMac waking up from sleep is the most stylish sound a computer can make. There shouldn't be any rattling or mooing. Try out the hardware check (insert Install CD 1, boot holding "C" down and it's somewhere in the menu bar). It checks everything, including the fans.

But don't be scared if it makes a sound like a hair drier on maximum power: that's normal. It's reassuring to know the fans can cool the mashine in hot climate. If it makes any other sounds, your fans are not ok...

* and the delivery guys broke it and their insurance won't pay... :mad: it was packaged exactly like it's sent out by apple...

mkjj

Jul 3, 2006, 06:45 AM

maybe Clarus the famous DogCow is back!!

http://en.wikipedia.org/wiki/Dogcow

bill4588

Jul 3, 2006, 11:03 AM

darn....mine still moos.....booooooo

ssteve

Jul 3, 2006, 11:08 AM

Is it me, or is there no "mooing" in that clip? I don't get it.

There is no mooing. But at least the video kept me occupied for at least 2 minutes and 40 seconds.

ssteve

Jul 3, 2006, 11:16 AM

Even with the volume turned all the way up, I can't hear any mooing in that clip.

Here (http://www.appledefects.com/media/moo.mp3) is an MP3 where you can hear the moo clearly.

Now I here the Moo. I have to say that I feel bad for all of you. My MacBook Pro does not have the CPU whine or the moo. My unit is a Rev B. I admit that when I heard the moo, I laughed really hard, but at the same time that just sucks.

Please Apple come up with a solution.

mashinhead

Jul 3, 2006, 04:59 PM

hope the next generation of intel chip will be more quiet.

this has nothing to do with intel, it has to do with the fan turning on and off.

disconap

Jul 3, 2006, 08:33 PM

Found this on xlr8:

"I don't think I've ever been this excited about something, which might say something about what my activities (or lack thereof).
What I did was I installed the Mac OS X 10.4.5 8G1454 IOUSBFamily.kext 2.4.0 System Update for iMac with Intel Core Duo and MacBook Pro. The file can be found here:
http://developer.apple.com/hardwaredrivers/download/ubdebug.html
(Note: There's a typo in that link URL (ubdebug.html should be usbdebug.html) - here's the OS X USB debug kits downloads that has the referenced file listed down the page.-Mike)
Download the 'v 240.4.3' file, run it, and install the package that DOES NOT have the '-log' ending. That is, run IOUSBFamily-240.4.3.pkg and NOT IOUSBFamily-240.4.3-log.pkg. Restart your computer, and the whine will be gone. You do not need to run photobooth or do any known workaround to quiet it down...
Also, I think you might need 10.4.7 installed first. It is not an installation requirement, but I believe it is a requirement for the fix to work. I have 10.4.7 installed on my 2.16 MBP 15".

I don't have a macbook or macbook pro, so I can't test it out, but it was originally posted in their forums, then their site manager reposted it on the front page, so I woul dbe willing to bet it works...

Xapplimatic

Jul 4, 2006, 04:11 AM

Is it me, or is there no "mooing" in that clip? I don't get it.
Yeah, I'm with you.. I don't hear any mooing... The guy is nuts, totally.

Xapplimatic

Jul 4, 2006, 04:13 AM

No mooing, no whining here.. brand new black MacBook.. no issues at all. Wish I could have said the same for this crappy new HP printer that came with it for only $100. That printer I called HP support about.. they sent a replacement.. the REPLACEMENT was broken too! Luckily, 3rd time was the charm... oh the inhumanity!

I would add I run the thing hard too.. Folding at Home GUI client has been running in Rosetta since the day I picked it up 2 weeks back.. No overheating problems. Fan runs constantly, but it isn't loud and it doesn't MOO! lol

mugtastic

Jul 4, 2006, 03:19 PM

ha! i think the people w/"no moo" either have loud rooms, poor hearing or -most commonly- run the machine hard. anything more than safari and itunes pushes the temp to above 68 degrees where the fans run constant (normal, good, no complaints, quiet for fans in a laptop, no issues, freakin great).

the odd behavior only happens under light load, at about 64 degrees
where the fans are set to go on and off at about the same temp.

-+* you all have the moo - hahaha *+-

but maybe not :)

Mal

Jul 4, 2006, 03:42 PM

amacgenius

Jul 4, 2006, 04:13 PM

MOO

Sorry for those of you with MooBooks but I couldn't stop laughing. Maybe I need to get out more!

My little black MacBook is moo free - maybe my machine is lactose intolerant!

:p

Nice, yeah my Black MacBook is Moo and Whine free.

QCassidy352

Jul 4, 2006, 04:50 PM

Found this on xlr8:

I don't have a macbook or macbook pro, so I can't test it out, but it was originally posted in their forums, then their site manager reposted it on the front page, so I woul dbe willing to bet it works...

THANK YOU. :D

This WORKED! The whine is totally gone, with no hacks or workarounds! I'm amazed... and I think this proves that apple can fix the problem if it really wants to.

As for the moo... as bad as ever. So it's not a perfect laptop yet, but it's sure getting there!

edit: nope... spoke too soon. After another reboot (after installing the quicktime update), the whine came back. It's still fixable with a hack, but 2.4.0 is no better than 2.4.6. Oh well.

mugtastic

Jul 4, 2006, 05:46 PM

We've dealt with your type before, mugtastic. I think it's pretty clear that your little "theory" is simply ignorance and spewing of nonsense, so why don't you start thinking about what you write beforehand? I'm glad you put the "maybe not" in there, otherwise I'd have to rip you to shreds for repeating the same stupid arguments that have been posted and shot down repeatedly.

jW

wow. thats great. i was under the impression that people who have this problem generally think its a setting in the fan programming and people who don't have it say "what are you talking about" or "whats the problem - fans are necessary"

please educate me - what is really going on and what do mooless fans do when the cpu temperature is around 64-65 degrees?

and also, i was responding to someone who "has no moo" but always pushes the macbook above the temp they moo at - so whats ripable about that?
rip to shreds away

theheadguy

Jul 5, 2006, 04:37 PM

Well, I'm glad someone found a fix, but shouldn't Apple's quality control unit be all over this? It seems like they have taken a very light approach to the new machines since they came out in January and May...makes me think about getting a PBG4 instead of a MBP revB...we'll see what becomes of this.

What quality control department?! Mwahahahahahah!!!!

Just kidding yes we have that dept. just couldnt resist to make myself smile. :o

WillMak

Jul 5, 2006, 10:10 PM

well they took care of the moos on the macbook pro ahwile ago with a firmware update...so it should only be a matter of time before they do they same with the macbook right? Of course I said the same exact thing like a month ago.

Gasu E.

Jul 6, 2006, 10:25 AM

After ruminating on this a bit, I find the problem to be udderly ridiculous.

P.S. skywalker-- recommend you get more sleep. :)

Gasu E.

Jul 6, 2006, 10:26 AM

wow. thats great. i was under the impression that people who have this problem generally think its a setting in the fan programming and people who don't have it say "what are you talking about" or "whats the problem - fans are necessary"

please educate me - what is really going on and what do mooless fans do when the cpu temperature is around 64-65 degrees?

and also, i was responding to someone who "has no moo" but always pushes the macbook above the temp they moo at - so whats ripable about that?
rip to shreds away

mugtastic-- given what you are charging for your advice, I think skywalker deserves all his money back.

dlastmango

Jul 7, 2006, 12:54 PM

Aren't dairy cows Black and White? Like the macbooks, they all Moooo!

BTW: The fix didnt work for me, Mine still moos... White 2.0Ghz, 2GB ram, 120GB HD

QCassidy352

Jul 7, 2006, 02:32 PM

as I posted above, the moo was kicking in for me at around 67-68 C before I tried this, and at 64-65 after I tried it.

Well, happily, a few days later, it is once again starting at 67-68 C. I don't know why, but it's a good thing, as far as I'm concerned. So perhaps whatever this accomplishes is temporary? :confused:

spriter

Jul 10, 2006, 08:21 AM

Didn't work for me. Kicks in at 65 which is the exact idling temp when I have my FW drive plugged in. :rolleyes:

skidooairman

Jul 11, 2006, 07:08 PM

darn....mine still moos.....booooooo
You got a BooBook. HAHAHAHAHAHAHA:D

hlfway2anywhere

Jul 15, 2006, 10:23 PM

i've been reading up on the MacBook for ages and i just wanted to mention that i've had my macbook since for 5 days and for just sitting here posting and running Adium (chat client) its running at 56 degrees. typically it never exceeds 80, and thats like...ripping a dvd or something. burning a dvd or using iMovie HD i get somewhere between 60 and 70 (75 max.). I never really heard a "moo" unless the moo is just the fan sorta starting and stopping a little. it only did that once i think and i dont even remember when. my fan doesnt really even start until its up over 75. theres never been a whine or a moo. do i have the flawless macbook or something?

jonwsmith

Jul 16, 2006, 07:56 AM

Unfortunately this did not work on my MacBook so I decided to create a dashboard widget which prevents the mooing noise. I have also created a petition to apple for them to release an official fix.

See http://www.moofix.com

HDnut

Jul 16, 2006, 02:33 PM

Question: My Macbook makes the high pitched hum, but if I turn on photo booth it goes away. Not as bad as it once was, but it is still there, only happens when I am on battery power. Any thoughts?

Thanks

exabytes18

Jul 21, 2006, 12:24 AM

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee......eeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee.....eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eee

That's the sound my laptop makes. Does that beat the MacBook's mooing issue.

No.

MIDI_EVIL

Jul 24, 2006, 11:30 AM

infobhan

Jul 30, 2006, 04:42 PM

I was able to get my MacBook to stop mooing with the moofix widget (http://www.moofix.com/). The PMU reset did not work.

bill4588

Jul 30, 2006, 07:21 PM

I was able to get my MacBook to stop mooing with the moofix widget (http://www.moofix.com/). The PMU reset did not work.
hey that worked for me too! thanks!

WillMak

Jul 31, 2006, 05:31 PM

Apple will NEVER fix the moo problem.

dagaz

Aug 1, 2006, 07:02 AM

I was able to get my MacBook to stop mooing with the moofix widget (http://www.moofix.com/). The PMU reset did not work.
I just got my MacBook yesterday and its a mooer. The PMU reset didn't work. What I don't understand with the widget is do you just activate it when the mooing starts and then you can go back to doing your work or do you have to leave the dashboard open or what?

To the poster above, why are you so SURE that Apple will NEVER fix this problem? They released a firmware update to fix the fan issue with the MacBook Pros so why not the MacBook?

WillMak

Aug 1, 2006, 07:19 AM

I just got my MacBook yesterday and its a mooer. The PMU reset didn't work. What I don't understand with the widget is do you just activate it when the mooing starts and then you can go back to doing your work or do you have to leave the dashboard open or what?

To the poster above, why are you so SURE that Apple will NEVER fix this problem? They released a firmware update to fix the fan issue with the MacBook Pros so why not the MacBook?

Cause it's been so long...It only took about a month for the firmware to comeout for the MBP version. I haven't used the widget yet, but it sounds like it could drain battery life when it's not plugged in.

edoates

Aug 1, 2006, 09:21 PM

did the reset. no change. osx update no change.

apple needs to send out a fix so the fans go on low but steady at an appropriate temp. like mine do now at 70 degrees.

i think apple thought setting it this way would pre empt constant fan noise at light loads like surfing the net and they would be hailed as having an even quieter notebook computer. they were wrong.

it is a great computer though.

The fix should be to have the fans runs like HVAC systems do: instead of a single temperature "trigger", they need a trigger to turn the fan on (say 67 degrees), and another one to turn it off again (say 64 degrees). That gives a 3 degree dead band where the fan stays in its current state between the endpoints.

Ed

mugtastic

Aug 2, 2006, 02:00 PM

The fix should be to have the fans runs like HVAC systems do: instead of a single temperature "trigger", they need a trigger to turn the fan on (say 67 degrees), and another one to turn it off again (say 64 degrees). That gives a 3 degree dead band where the fan stays in its current state between the endpoints.

Ed

absolutely - meant to say on at higher temp, off at lower. but maybe on at 70 off at 60? longer time between cycles.

tried the widget - made the temp. read 80+ and the fans were on high non-stop, and i couldn't just turn the widget off - had to restart then trash it - i choose the soft fan moo.

just started to notice the whine but its sooo quiet i assume other peoples are MUCH louder. goes away with photo booth though.

dmelgar

Aug 3, 2006, 10:44 PM

How do you find out the CPU temperature?

Bought my Macbook about a month ago. Never noticed any mooing. Tried hard to hear it too, never noticed it.

Not sure what if anything changed, but last night I was in a completely silent room which is unusual, and I had been running the Macbook hard to it was hotter than usual, and I had just applied a security update to Mac OS X, when I heard it. Its very faint. I have to put my ear to the keyboard, but there it was, the distinct mooing sound.

I think it is silly to have a fan spin up and down so quickly. Its not useful. Apple needs to extend the time the fan stays on. I’m still hoping its a matter of time before a firmware fix it released. Seems like it should be easy and should have been done by now. Either have a bigger dead band, or have a minimum fan on time, something, anything, but spin up and down in a second just doesn't make sense.

Mackilroy

Aug 4, 2006, 12:01 AM

How do you find out the CPU temperature?

CoreDuoTemp (http://macbricol.free.fr/coreduotemp/). :)

JurgenWigg

Aug 4, 2006, 09:43 AM

I tried the widget, was kind of freaked out by temperatures that high, restarted then trashed it. Not worth it.

bill4588

Aug 4, 2006, 11:49 PM

I tried the widget, was kind of freaked out by temperatures that high, restarted then trashed it. Not worth it.
am i the only one that didnt have high temp. results from using the widget? Mine just stayed around 70 degrees with the fan constantly running at a low quiet pace.

RealDeal

Aug 5, 2006, 11:57 PM

and no-one seems upset.

I say- more animal noises from IT!

Btw my Macbook gets hot, but doesn;t moo.

dmelgar

Aug 14, 2006, 10:25 AM

Fix doesn't work. I tried it, waited a while to see if the conditions would occur again for mooing, and it did.

When the temp is around 69c on my system, the mooing occurs. I recently upgraded to 2gig of memory. I don't know if that's helped cause it. It seems to idle hotter and certainly runs hotter, I assume because its swapping less and actually doing something instead. Its awesome fast w 2 gig.

Jo-Kun

Aug 14, 2006, 01:12 PM

Apple will NEVER fix the moo problem.

yes they do... I mean its quite funny... My MacBook had yellowing (recognised by apple so replaced parts for free) so I went to my local apple dealer, told him: my MacBook is ill and before I opened the mac he said: o you mean the mooo, we'll fix that... and then he saw the yellowing: o yes and that too ;-) so now 30min later I have my MacBook back wih a new white part... and the moo is allso gone...

netdog

Aug 14, 2006, 01:16 PM

yes they do... I mean its quite funny... My MacBook had yellowing (recognised by apple so replaced parts for free) so I went to my local apple dealer, told him: my MacBook is ill and before I opened the mac he said: o you mean the mooo, we'll fix that... and then he saw the yellowing: o yes and that too ;-) so now 30min later I have my MacBook back wih a new white part... and the moo is allso gone...

Please submit this to MacRumors as news and also make a new post that Apple fixed your moo. People need to know that they can now do this.

Jo-Kun

Aug 14, 2006, 01:20 PM

Please submit this to MacRumors as news and also make a new post that Apple fixed your moo. People need to know that they can now do this.

ok but this was my local apple dealer, not an Apple Store... (the replacement of yellowing parts was known allready)
so fixing the moo is maybe something one of their techguys found out and fixes... nothing to do with apple... but maybe they got instructions from apple, didn't asked him... I was in a hurry (and very happy they fixed it in 30min, instead of the 3day waiting they told me, but telling them I need it for work changed that :D)

www.itpro.be is the site from that store...

mugtastic

Aug 14, 2006, 03:55 PM

yes they do... I mean its quite funny... My MacBook had yellowing (recognised by apple so replaced parts for free) so I went to my local apple dealer, told him: my MacBook is ill and before I opened the mac he said: o you mean the mooo, we'll fix that... and then he saw the yellowing: o yes and that too ;-) so now 30min later I have my MacBook back wih a new white part... and the moo is allso gone...

please go back or call them and ask what they did. this would be very significant to a lot of people. thanks in advance - matt

Jo-Kun

Aug 16, 2006, 05:59 AM

please go back or call them and ask what they did. this would be very significant to a lot of people. thanks in advance - matt

the mooing is back (but less loud than before...) so I didn't noticed it before today... the fans rev up but not as much as they used to do so that's why i didn't hear it before I guess... and now its very silent here and then... yep it's back... :s

hmmzzz...

dagaz

Aug 17, 2006, 05:40 PM

Apple will NEVER fix the moo problem.

Apple has released the firmware update: MacBook SMC Firmware Update (http://www.apple.com/support/downloads/macbooksmcfirmwareupdate.html)

About this update
The SMC Firmware Update adjusts fan behavior in the MacBook.

Jo-Kun

Aug 17, 2006, 05:48 PM

just installed it...

instead of allways going up and down, the fan now runs at a slow & continuos speed all the time...

so its really fixed this time instead of being a little less audible... and indeed apple did fix it...

getti

Aug 17, 2006, 06:00 PM

Installed this on my MacBook and what used to run at 65C to 75C is now running at a nice 40C.... got to 50C with all apps open including PS CS2 and Dreamweaver.

Any idea if there is a fix due for the MacBook Pro? Kinda talked myself into getting one and selling my iMac and MacBook so would be nice

WillMak

Aug 17, 2006, 06:11 PM

Apple will NEVER fix the moo problem.

YAY! I jinxed myself and look what has happened! :D

MustardMan

Aug 17, 2006, 08:13 PM

This didn't seem to make much of a difference in my temps - I'm still idling around the mid 50s and running around the mid 70s when I'm running "yes > /dev/null".

This is pretty much the same thing I saw when I tested the machine in late may.

dmelgar

Aug 17, 2006, 08:18 PM

Seemed to work for me. Temp staying below the 69c that seemed to be where the mooing occured. I'm running around 60c with some activity going on.

macdaddy121

Aug 17, 2006, 10:36 PM

Working great for me....This should be on page 1!!! My temp is staying right at or below 60. Nice job Apple. They fixed it by having the fan stay on very lightly....fine by me....its not obnoxious like the mooing

muzikool

Aug 18, 2006, 12:54 AM

No "moo" so far after installing the firmware update, and my temp is sitting around 58-60 so far. The whine is still there, though, so that's a bit upsetting.

Jo-Kun

Aug 18, 2006, 07:49 AM

No "moo" so far after installing the firmware update, and my temp is sitting around 58-60 so far. The whine is still there, though, so that's a bit upsetting.

ok whats the difference with moo or whine? I thought they were the same problem...

or is the whine the cracking noise my poweradaptor sometimes makes?

TBi

Aug 18, 2006, 08:22 AM

ok whats the difference with moo or whine? I thought they were the same problem...

or is the whine the cracking noise my poweradaptor sometimes makes?
Put simply, if you don't know what it is then you don't have it :)

Jo-Kun

Aug 18, 2006, 08:42 AM

Put simply, if you don't know what it is then you don't have it :)

ok I had the moo... that's gone, I had yellowing, that's gone too... so my MacBook is healed ;-) no other things that need healing... hahahaha

dmelgar

Aug 18, 2006, 08:50 AM

Put simply, if you don't know what it is then you don't have it :)
When I first bought the Macbook it did not moo. Don't know what made it start mooing, possibly installing 2gig of memory or just using it more heavily so it would heat up to 69c. SMC fix has fixed that.

I never noticed any other noises unless I put my ear on the keyboard when I'd notice what might be the whine. It seems to be getting louder over time, or maybe I'm just in a quiet room more often.
Its a high pitched noise coming from the Macbook, not the power adapter. It comes and goes, almost like morse code. Sounds like an electronic noise, as if the processor is buzzing, then not. Is this the "whine"?

Another problem I've had recently develop is a squeaky "A" and "W" key. I think its because of the heat. I've love to find out how to remove the key so I can check whats causing the rubbing. I'm tempted to spray some silicon under the key to see if that helps.

TBi

Aug 18, 2006, 09:26 AM

I never noticed any other noises unless I put my ear on the keyboard when I'd notice what might be the whine. It seems to be getting louder over time, or maybe I'm just in a quiet room more often.
Its a high pitched noise coming from the Macbook, not the power adapter. It comes and goes, almost like morse code. Sounds like an electronic noise, as if the processor is buzzing, then not. Is this the "whine"?

Yes that is the whine, albeit not as bad as you'd hear off the macbook pro. Put your head right up to the laptop and listen to how loud your whine is that close. On a bad macbook pro that's how loud it would be when you stand about 10 feet away (it's hard to give it exact figures but i'm sure you get the idea). Now imagine how loud it would be right up close to it.

mugtastic

Aug 19, 2006, 12:32 AM

I never noticed any other noises unless I put my ear on the keyboard when I'd notice what might be the whine. It seems to be getting louder over time, or maybe I'm just in a quiet room more often.
Its a high pitched noise coming from the Macbook, not the power adapter. It comes and goes, almost like morse code. Sounds like an electronic noise, as if the processor is buzzing, then not. Is this the "whine"?

that describes what i hear right close up too. i knew it was the often mentioned whine because it goes away when you turn on the camera (by opening photo booth). the problem whines must be much louder than ours.

my moo is gone with the firmware upgrade and she runs cooler. excellent.

chairguru22

Aug 21, 2006, 05:12 PM

i just installed the firmware update and now i run about 10 degrees cooler from 66 to 56 degrees.

andrewface

Aug 22, 2006, 02:04 AM

i just installed the firmware update and now i run about 10 degrees cooler from 66 to 56 degrees.

what app do you use to moniter the processors temp?
i also just installed the firmware update

mugtastic

Aug 22, 2006, 03:24 AM

http://macbricol.free.fr/coreduotemp/index.php?rub=dwnld

jblock

Aug 23, 2006, 10:23 AM

The update cured my moo, although it was pretty quiet to begin with. My MacBook temp hovers between 50 and 55C now during regular use, and at about 45C when idle. Those are all about 10 degrees cooler than before the update and the top right corner is noticably cooler.

iBrad

Sep 23, 2006, 01:15 PM

I bought a Macbook (white) about 3 weeks ago and in the quietness of this morning I realized that my macbook does infact moo! but it mooed very quietly. So I did the firmware update by Apple and problem solved!

btw I love my mac and I don't think i'll touch my desktop pc again! :D

meepm00pmeep

Sep 23, 2006, 01:39 PM

it's hard to hear, i wonder if it's louder in real life... i have to really try & hear it from that clip

iBrad

Sep 24, 2006, 12:13 PM

wow I can't believe this, my macbook runs alot cooler after doing this update! about 10 deg lower! :)

OdduWon

Sep 24, 2006, 03:37 PM

wow those core duo chips are only 20 degrees cooler tham my twin 2.7 g5. know wonder everyone wants merom/ santarosa in their note books.

Kaiser Phoenix

Sep 28, 2006, 03:44 PM

Now that one I could hear.. no wonder so many of you are frustrated.
Why won't apple address this or find a finite fix?

I was just reading through to make sure my Macbook wasnt MOOING but this MP3 man...

That is really annoying. I cant believe they can release such a product. Thank God mine didnt have that!! It is so annoying!!

hagjohn

Sep 30, 2006, 04:21 PM

My 5 day old Macbook is browsing macrumors.com at 39C. No moan or groans but I have yet to hear the fan run. I'm sure it is but I don't hear it.

awhitaker

Oct 2, 2006, 12:50 PM

The turkey goes "Gobble Gobble Gobble"
The MacBook goes "Moooo Mooooo Moooo"

Sorry to be joking about an annoying problem but once I heard that mp3, it reminded me of the See n' Say Toy when I was little.

twoodcc

Oct 2, 2006, 01:03 PM

my macbook never had the "moo"

BSME

Oct 5, 2006, 10:29 AM

My 5 day old Macbook is browsing macrumors.com at 39C. No moan or groans but I have yet to hear the fan run. I'm sure it is but I don't hear it.

it seems to have been fixed. mine is more silent than any machine i've ever owned (1.83 macbook).

it gets slightly warm, but not anything unexpected. it's not an iceblock...