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MacBook Air Fan Noise With Lion

So I just installed Lion on my late 2010 13" MBA and have noticed today that the fan like to rev up then slowly come back down.... then five minutes or so later do it all again. I've looked in activity monitor and nothing seems to be causing this, I'm only on safari and not doing anything with Java or Flash. Is anyone else havin this problem or know a way to troubleshoot it?

Posted on Jul 21, 2011 8:53 AM

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92 replies

Aug 5, 2011 1:12 PM in response to YEEZY

I think the problem is that it's coming from multiple sources. I don't know about Chrome, but Safari seems to make things run hot (perhaps it's a WebKit issue), especially when there is heavy JavaScript action. But even when I'm doing next to nothing, the fan always ends up reaching its top speed (and stays there)...its neutral running state is about 60-65°C and 6200 RPM. My battery has become very sad after Lion.

Aug 6, 2011 5:51 AM in response to Tyler Fogle

I turned off all energy saving and let it run very slowly through the backup. All backups since then have been much more efficient, and fan usage has been restricted to mainly when i run Flash, as was always the case.


One suggestion was to reformat your Time Machine hard drive as apparently Lion stores data differently.


It is odd that Apple has not commented on the matter. I spoke to Apple support recently and they had no idea it was an issue... anyone else spoken to them?

Aug 6, 2011 8:57 AM in response to Tyler Fogle

Well - Not sure what's up with some of your models, mine was purchased in 2010 MacAir 11".

4GB Ram - (maxed out as much as possible).


I just upgraded my MacAir to Lion - and I do not see or have any of these problems. No matter if I work for hours sitting on the couch or just leaving it on and letting it copy files to the server - nothing is hot - no fans can be heard ever!


In fact - since I purchased this MacAir 11" - it's quiet as a mouse. It is cold to the touch and I have never felt any heat coming from it.


I just purchased another one - 2011 MacAir - with Lion preloaded - but with faster speed and maxed out specs. I will compare the two once I have a chance to play next week.


Regards


AlaskaCPU


Message was edited by: AlaskaCPU

Aug 6, 2011 12:01 PM in response to Tyler Fogle

Hi

im also using a MBA 2010, 4GB,2.13 with Lion. I dont have heat issues. But I remember an forumpost which states that CITRIX client makes some issues. Is it possible that similar issues exist with other SW. So it would be interesting to know if anyone using Lion has some SW installed with background services (launchd...).

http://forums.citrix.com/thread.jspa?threadID=290934


Or just add a 8GB partition and make a plain Lion install and run the same tests again.


As mentioned no issue with MBA 2010 at all. runs great , im just missing the iluminated keyboard.


Yours

Aug 7, 2011 9:27 PM in response to tdowling

I have the same issue with 2010 MBA Dual Core and my new i7 model. I've upgraded my iMac, MBP 15" & MBP 13" and they have no fan noise issues. Apple support had be take my MBA to the Apple Store and they informed me it was an issue with Citrix VPN software. Having uninstalled this, I still had the same issue. Apple L2 then suggested I do a wipe and reinstall, guess what - same issue. They currently don't have a solution.

MacBook Air Fan Noise With Lion

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