MACBOOK PRO & SNOW LEOPARD - OVERHEATING

Just installed Snow today and have exactly the same "ticking" problem! Overheating as well 😟

You can add me to the list of macbook pros that run hot and fans blazing using snow leopard. I hope apple sees this threads and fixes this. Never happened with leopard unless I was running a heavy load.

neilford

Given the huge number of MBP users here and how few have mentioned overheating, it's not likely SL's fault and more likely to be a fan issue.

One debugging step to take is to run the hardware tests on the disc that originally came with your machine; the fans in the MBP are software controlled and as such the machine can tell if they are running and/or running at the proper speed.

Completely unrelated to Snow Leopard, but has anyone looked into other software running in the background? Both my MacBook Pro & MacBook aluminum were cranking serious CPU usage, and got toasty... I discovered that iAntiVirus was bogging the processor.

After turning it off... no problem. Quite possibly a conflict with SL, which lies in the additional software not SL.

Also, a personal preference of mine is smcFan Controller. I pick the fan speeds, and when under load, I can bring them up to 5500 or higher before the machine starts cooking.

Maybe a solution for some.
-Bobby

Message was edited by: Bobby & Carie

Bobby & Carie wrote:
Completely unrelated to Snow Leopard, but has anyone looked into other software running in the background? Both my MacBook Pro & MacBook aluminum were cranking serious CPU usage, and got toasty... I discovered that iAntiVirus was bogging the processor.

Quite correct.

Supposedly there is also an update to iAntiVirus that corrects this, but I haven't tried it (and don't run iAntiVirus to begin with.)

OK.

I called Apple Support about this, they told me to get my laptop to a service center to see if there was something wrong with my hardware (Macbook Pro purchased 2008-10-20 with SSDrive). It only took a day to check, which is good. Apple paid for the costs even though my guarantee expired the same day. Thanks for that.

The service center returned it next day, they ran a hardware test - which turned out OK. Nothing wrong with my hardware. All though, it was filled with large amounts of dust, which they removed. They believed that the dust most naturally was the cause of the problem.

My computer was cool the first day, second day it started getting hotter again and today my CPU reached over 100ºC from only running Safari. New record! You could boil an egg! Quickly, I turned off my laptop and called Apple Support again.

Talked to a surprisingly nice guy, he recommended me to make a clean install of Snow Leopard and run that for about 2 days. If this doesn't solve my problem, he said it gotta be the hardware. He would make sure Apple pays for any repairs or parts being exchanged – until this problem is fixed.

So I'm preparing a clean install now, backing up software, files etc. Will keep you posted.

Sorry that i can't help u with anything. My MBP feels warmer than before. I have a late 08 mackbook pro. 15'', 2.4GHz, 2G ram and 250g hard drive. It's 11 months old.
I installed Snow leopard a month ago. Now i'm running safari and preview and the room temperature is about 14'c. The computer is definitely warmer than it used to be when using leopard. Back in leopard time, the computer actually feels cold.
i don't have the software to show the exact temperature of CPU or fan speed.
Another problem i have is the battery thing.
In Leopard,using the 9400m graphic card that is the setting for longer battery life, after fully charged and running safari, preview and itunes, it has a usage time for about 4.5 hours.
After installing Snow leopard, when fully charged, it can only stays for 2.5 hours maximum. I've tried recalibrating the battery once and resetting the SMC, both doesn't make any difference. As the coconutbattery shows, my current battery capacity is at99%, that is 4594/4600mAh and with 191 battery cycles
I also found the battery charging time also appeared to be very strange. Now i have my power adaptor connected and it says it's 85% charged, however the time remaining for charging is 2 hours!!!
Back in Leopard, the total time needed for charging is about 2.5 hours maximum.

Yep mine overheats too ever since I installed Snow leopard.
Especially when using Flash.....

I am having this same problem... I too thought it was iAntiVirus (Removed app, still have issue)Though it will happen when nothing additional is running (Sitting Idle w/ low processor usage). When the overheating starts the battery also goes into a "service required" status. Apple checked the battery.. all good. They reset the power management, that worked for about a day... At this point.. plan to downgrade to 10.5.x to see what happens... Personally I think it's and OS drive power management issue

Just a thought... Is anyone running SL in 64 bit mode? Any corelation? I have been running 64 bit. Possible processor overload? Just putting the thought out there.

Any news?

I am using iMac 20" and having the same problem ever since I installed SL. Obviously it's not a hardware issue.

Please Apple fix this, or rename the OS to Desert Leopard 😀

Message was edited by: shoja3

same problem fan is running all the time do not think it is a hardware issue I never had a problem with my MBP. Hope Apple will have fix

If you have been following my posts, I have now done everything Apple Support and this thread suggests. It's been through numerous SMC, PRAM/NVRAM resets, repaired Drive Permissions, a hardware check at support center that turned out OK, dust cleaning and now finally a format disk and clean install of Mac OS X Snow Leopard and update to 10.6.1.

First thing I do is update Adobe Flash to latest version and get iStat Nano to see my temperatures. I watch a video on Break.com and my temperatures on the CPU instantly leaps over 95ºC – it's overheating again! I then close the video and surf some news sites instead. My temperature is around 70ºC here. Not normal.

Apple Support have said, if a clean install fails it must be a hardware failure, they have offered to replace the broken parts (if they can find them).

But... Since I'm already installing stuff, I might as well first try to downgrade and do a clean install of Leopard instead. If the temperatures rise to over 95ºC running Leopard, then yes, it must be a hardware problem. If it doesn't, can't there be something wrong with Snow Leopard? Everyone says it's impossible, it cannot be. Lets try it.

Johnpalley (I did not know about a update)

I am unshour if thay will have it fixed with the next update. Most Probley not! 😟

I did strip my MBP and clean off the heat tranfare compound and put new on and my meaching is cooler but even at temp of 45c the fans on all the time and that bugs me. So not such a good thing to do.

Update... Did a clean reinstall of SL... Used smc Fan Control to monitor temps.. With no apps running and only default SL installed, temps ran fine for about 30 min.. then temp started rising (Maxed out at 149F). Removed SL and reinstalled Leopard. Ran for 30 min with base install max temp observed 124F. Proceeded to update and reinstall apps temp never strayed above 134F. For me this locks it, SL is the cause of the overheating.