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Level 1

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upgraded to Mountain Lion fan is constantly running

MBP 2011

Upgraded with Mountain Lion and now the fan in constantly running. I've checked the activity monitor and there is no application taking over a few %.

I don't have anything running other than Chrome, finder, activity monitor, drop box.

I tried the the SMC reset suggested in other posts but that didn't solve the problem.

After shutdown and power up, the fan is off but then it slowly builds to full speed

Any help would be appreciated, thanks

MacBook Pro, OS X Mountain Lion

Posted on Jul 25, 2012 11:54 PM

61 replies

Aliy155

Level 1

0 points

Jul 27, 2012 7:02 AM in response to gpounds

Same here with MacBook with retina display. I wonder if this is a bug or not. I expect Apple to fix this with a new update.

gpounds Author

Level 1

0 points

Jul 27, 2012 8:25 AM in response to MarkM36

Thanks MarkM36. That pointed me to the right location. Interesting that eset did not show up in Activity monitor as taking many CPU cycles however when i went to the console it was spewing error messages.

I killed the eset daemon in activity monitor and fans stopped and error messages stopped. Of course i'm not yet able to remove the sw because the Mac claims it is already open and then when i restart the Mac eset starts again. Sigh...

I'm sure i'm missing something so when i figure out I'll come back and post the answer.

To everyone else, don't make my mistake and assume because you don't see high % cpu cycles that some poor behaving app isn't causing this.

Jul 27, 2012 8:29 AM in response to gpounds

gpounds: Start up your Mac in Safe Mode and then delete the offending program.

See this for instructions on Safe Mode: http://support.apple.com/kb/HT1455

macimby

Level 1

19 points

Jul 27, 2012 1:03 PM in response to MarkM36

Re: ESET Cyber Security,

http://kb.eset.com/esetkb/index?page=content&id=NEWS192

also:

http://kb.eset.com/esetkb/index?page=content&id=NEWS193

Can someone verify whether that actually helps?

MarkM36

Level 1

10 points

Jul 27, 2012 1:25 PM in response to gpounds

gpounds : I had that issue too, so I had to go delete Eset from my applications twice since I uninstalled it. But after that it never came back.

Anyway glad to be of help to some of you guys. 🙂

gpounds Author

Level 1

0 points

Jul 27, 2012 3:02 PM in response to MarkM36

Here is how i deleted ESET.

- open activity monitor

- display all processes

- search for anything named eset (i found 3)

- use the activity monitor to quit the process

- go to finder/applications

- move eset to thrash

No more ESET and fans have stopped.

One problem down now need to fix the incompatibility between Time machine and my seagate USB backup drive

macimby

Level 1

19 points

Jul 27, 2012 4:17 PM in response to gpounds

Why go without anti-malware protection if it's been fixed already like ESET's announced (above)?

gpounds Author

Level 1

0 points

Jul 27, 2012 5:31 PM in response to macimby

macimby -

The reason is because our IT group has not been able to provide a way for MAC users to upgrade to ESET and the ESET web site won't let individual users upgrade the business version.

Once that gets sorted out I will install it back on.

Jul 28, 2012 12:36 AM in response to gpounds

Just had the same issue on a macbook pro... crashreport running constantly and draining the battery. Fixed by downloading the latest ESET Cybersecurity for Mac and using the 'uninstall' feature in the dmg - just open it and you'll see the option.

Have since reinstalled with the latest version and there's no crash.

I even thought my battery was on it's way out before checking Activity Monitor and the Console for the crash reports!

macimby

Level 1

19 points

Jul 28, 2012 6:57 AM in response to Zee Zed Zipster

Thanks for verifying the ESET press releases were true in your case, Zee Zed.

Do you think that info is worth a "Like" vote in this thread?:

https://discussions.apple.com/thread/4138868?answerId=19057408022#19057408022

Fmrc

Level 1

0 points

Jul 30, 2012 7:52 AM in response to gpounds

In my case, I seem to have the problem solved by going to Apps->Utilities->Activity Monitor, then killing the Roboform process that was using 70%+ of the CPU, but only less than 100mb of memory.

Apps->Utilities->Console was also showing a few errors per second for this software (Roboform).

Yaann

Level 1

16 points

Jul 30, 2012 7:54 AM in response to gpounds

Hi,

I have noticed this issue when using Mail.app: using Mail 6.0 under Mountain Lion (both with iCloud and Exchange mail accounts enabled), this application uses between 90 to 120% of the CPU when running. Closing it brings the system backs to normal.

Have tried to reset the Address Book (now called Contacts)" by deleting the folders in Application Support and restart, then recreate a new Contact support folders from scratch, which was suggested in other threads, but the Mail app still uses all the processing power and the fan goes crazy to compensate.

I hope Apple will find a solution quickly!

Jul 30, 2012 8:17 PM in response to gpounds

Hi guys...

Had similar problems: crazy busy fans, overheating ****** battery-time, all without any form of indication in the activity monitor.

I might have found the reason (at least for some of us). I simply updated to the new version of Dropbox that's supported for ML. So far everything seems to be normal again.

http://blog.dropbox.com/index.php/dropbox-for-mountain-lion/

So, my suggestion is double-check all your installed apps and see if there are updates out yet. Otherwise disable them 1 by 1 to test where they problem is.

Good luck

Aug 4, 2012 5:17 PM in response to gpounds

Had the same issue, bussy noisy fans.

Solved it by resetting the SCM

Resetting the System Management Controller (SMC):

http://support.apple.com/kb/HT3964?viewlocale=en_US&locale=en_US

Good luck!

znm200

Level 1

0 points

Aug 5, 2012 6:13 AM in response to macimby

Thanks to the many who recommending uninstalling CyberSecurity. It works immediately to kill the fan.

And thanks to macimby for providing the links and ZZZipster for the instructions. I haven't been able to unistall CSecurity until I followed the advice and steps you guys provided (i.e. went to the site, dowloaded the trial, opened it and then hit deinstall).

The fan is quiet and Reportcrash is not showing up in the Activity Monitor.

upgraded to Mountain Lion fan is constantly running