I am on my second MacBook Pro 15".
It does exhibit CPU whine, a hiss mainly on the left but also the right
speaker when mute is switched on, mainly when running on battery.
The Utility SystemLoad (http://www.bresink.de/osx/SystemLoad.html) will
play the scale on the MacBook Pro by loading the processors :-)
Also the the maximum temperature when loading fully goes up to 85 deg C.
Will probably return it as DoA while I can - hoping they have fixed it
by now in new units.
Marc

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John Proctor - 11 May 2006 03:16 GMT
> I am on my second MacBook Pro 15".
> It does exhibit CPU whine, a hiss mainly on the left but also the right
[quoted text clipped - 7 lines]
>
> Marc
Marc,
Have a look at this...
http://www.engadget.com/2006/05/01/macbook-pros-overheating-due-to-thermal-grease/
may
solve your heat problems.

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John D Proctor
Marc Heusser - 11 May 2006 20:16 GMT
> > I am on my second MacBook Pro 15".
> > It does exhibit CPU whine, a hiss mainly on the left but also the right
[quoted text clipped - 15 lines]
>
> may solve your heat problems.
Dear John
yes - but even though I am an MSEE I am not going to fix it myself.
and Pete:
> So for the other half of the problem (whining noises) there is
> something to be said:
[quoted text clipped - 4 lines]
> by a number of sources that it is being addressed, although my guess is
> that it's hardware-related
That is my guess too - not separating analog and digital circuitry
properly. The sound very clearly emanantes from the loudspeakers even
when I mute them.
BTW: I put up recordings of the CPU whine at
http://www.heusser.com/pub/macbookpronoise/noiseonbattery.mp3
http://www.heusser.com/pub/macbookpronoise/noisebatteryscale.mp3
(sorry, only 100 kb/s uplink)
Marc

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John Proctor - 11 May 2006 23:30 GMT
>>> I am on my second MacBook Pro 15".
>>> It does exhibit CPU whine, a hiss mainly on the left but also the right
[quoted text clipped - 42 lines]
>
> Marc
Marc,
Disdn't say you should fix it yourself. However until Apple fixes the
problem it is likely to occur in any other MacBook you get to replace
it. Hence I will not be replacing my G4PB 800FW any time soon;-)
Apple's response was a threatening legal letter to the original web
site (somethingawfull.com I think) to remove the information from their
service manual which is copyrighted. Even though anyone with a modicum
of common sense would see is covered under the fair use provisions of
copyright law.
Yet another example of "Love the computer too bad about the company"!

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John D Proctor
Tom Harrington - 12 May 2006 00:31 GMT
> Disdn't say you should fix it yourself. However until Apple fixes the
> problem it is likely to occur in any other MacBook you get to replace
> it. Hence I will not be replacing my G4PB 800FW any time soon;-)
Even though there has been considerable discussion online about problems
people have encountered with the MacBook Pro, I haven't seen any other
mention of keyboard problems as described in this problem. I would
expect that if the keyboard is defective in this case, a new keyboard
would do the trick, and that other MacBook Pros would be unlikely to
show the same symptom.
However, since Marc mentioned that the keyboard works normally for his
wife, it might be worthwhile to visit someplace that sells MacBook Pros
and see if he has the problem on the demo units. Maybe for some reason
the keyboards just don't respond well to his style of typing, in which
case he'd continue to have the same problem.

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Tom "Tom" Harrington
Macaroni, Automated System Maintenance for Mac OS X.
Version 2.0: Delocalize, Repair Permissions, lots more.
See http://www.atomicbird.com/
TechsysPete - 11 May 2006 05:54 GMT
So for the other half of the problem (whining noises) there is
something to be said:
Check this out:
http://www.red-sweater.com/blog/macbook-pro-noise-complaints/
I have this problem with a W8614 and it seems to be directly affected
by both the POWER usage and the CPU usage. I find that putting a
significant load on the dual core will kill the noise completely. You
can try doing what I did; just click and hold the mouse button down on
some open web browser or the volume/wifi/bluetooth menu icons at the
top of the screen, for as long as I held down the key the noise was
completely gone. A program exists that allows you to perpetually
emulate this CPU load called QuietMBP. You'll find information on that
in the link above. Of course, I don't need to warn you about the extra
power consuption that running this program will cause. Just be sure
that if you need those three hours uncut, that you don't run Quiet MBP.
The other thing I noticed right away was that plugging in the AC
adaptor caused the noise to disappear as well. As long as the AC
adaptor is plugged in, I have almost no problem with the noise. If you
pay attention to the details in the link above you'll notice a comment
by a gentleman who claims that he went ahead and got another AC adaptor
for travel (apparently the thought of lugging one in and out of the
house was too terrible to bear). _He_ says that one adaptor 'brick'
causes the whine, while the other does not; plug in one and there is a
noise, plug in the other and it dissappears. This makes me wonder if
it's not the battery.
Anyway, we're still waiting for Apple to address this issue. Were told
by a number of sources that it is being addressed, although my guess is
that it's hardware-related and that Apple will do their best to fix it
quietly so that early mactel MBP owners won't demand replacement on a
massive scale and newer owners will be ignorantly content. Let's hope
that isn't the case. I've got my fingers crossed for some soundcard
updates or something.
TechsysPete - 11 May 2006 06:15 GMT
Guess I spoke too soon, Marc. This problem had been taken care of:
http://forums.macrumors.com/showthread.php?p=2359556
Just remember that you will lose 30 minuets from the overall battery
life of your computer by doing this. Restoring that life is as easy as
copying a file, but the sound will return if you do. The file you will
be moving removes the excellent power economy of the MBP, which
accounts for the loss of battery life. Hope this works for you.
-Pete-
TechsysPete - 12 May 2006 03:06 GMT
Marc, I've contacted Applecare about the whining. There are several
different types so the person I talked to sent me through a few steps
to narrow the source. Doesn't seem right does it? There's more than
one kind of whine, so they have to figure out which one I'm complaining
about.
Box my ears and call me a pickel. He had me to close all open apps and
drag a finder window around the screen to see if the noise were from
the LCD. I've heard of 'em LCD noises. I can only be greatful that I
don't have it.
By my reckon there won't be a fix for this. The rep said it was the
dual core and that means that no amount of software hacking or patching
will kill it. Sure, you can load the processor or cut the IO file from
the System folder but you're only shortening your battery life or even
the life the Pro itself possibly, probably. In my opinion that's
bartering a bad problem for a worse one; and at second thought it's not
so bad, this little whining. After all, we hear whining all day from
employees and news reporters and foreigner leeches and folks with
headaches all day. Let's you and I instead be good natured and
thankful for the whining we're able to hear because I don't think I
need to remind you that there is a third fix besides the two I've
pointed to in the last 24 hours for this. You could box your ears so
that you couldn't hear anything, become a deaf person and no noise will
ever bother you again. This solution doesn't lower the battery life of
your lappy at all.
I can live with this. I've never had a mac before, so I'm especially
pleased overall. There! see? I don't even hear it anymore. I guess I
happy thoughted it away. See ya'll.
Stan Horwitz - 15 May 2006 22:50 GMT
In article <marc.heusser-C172BF.01185911052006@idnews.unizh.ch>,
Marc Heusser <marc.heusser@CHEERSheusser.comMERCIALSPAMMERS.invalid>
wrote:
> I am on my second MacBook Pro 15".
> It does exhibit CPU whine, a hiss mainly on the left but also the right
[quoted text clipped - 5 lines]
> Will probably return it as DoA while I can - hoping they have fixed it
> by now in new units.
That sucks! I have read that Apple has had a lot of problems like the
ones you described with its first batch of MacBook Pros. My MBP was
purchased in March and its fine, so I guess I am lucky!