kernel_task takes all of CPU, even after restore

[scenemissing]

I just wanted to see if anyone had seen this before, but I suspect I will have to take it in to get serviced. My 2011 13" Air has the following symptoms:

Fan goes to max a few seconds after boot
Mouse is stuttery
kernel_task taking up 320% of CPU or more (which i'm sure is causing the above fan and stuttering problems)


I've done a clean restore already and the problem persists. I've also reset PRAM and PMU.

Anything left to try other than a HW problem?

 

[spacedrabbit]

bad cpu/logicboard/thermal sensor. it doesn't really matter, it's likely all the same part on that model of MBA.

 

[Roman2K~]

How long has the computer been up for? Maybe OS X is just performing scheduled heavy maintenance tasks. What do the logs say ("Console" app)?

 

[spacedrabbit]

very possible

on a clean installation the only process i can think off that will tax the cpu is mds/mdworker for spotlight cataloging

 

[scenemissing]

Now it gets stranger... I do not get the problem when booting off of a clone of a different 2011 Air (10.7.1 - mostly clean system from work)

I swear that I fully erased the partition when doing the restore - I formatted it using disk utility after baking up data to an external drive and then did the Lion net restore. I had to do the full initial setup and I did not restore my data.

I guess I will keep messing with it.

 

[hondavtec]

IOPlatformPluginFamily.kext

I had the same problem, removing IOPlatformPluginFamily.kext in root/System/Library/Extensions and rebooting solved this issue for me...