kernal_tak is eating up all the CPU in MacBookPro

[krishnads03]

EtreCheck version: 3.4.4 (448)

Report generated 2017-09-10 22:05:05

Download EtreCheck from https://etrecheck.com

Runtime: 22:27

Performance: Poor



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Click the [Details] links for more information about that line.



Problem: Computer is too slow

Description:

I am having Macbook Pro (Mid 2012).

I made a hard reset of it and installed fresh copy of Lion OS X by Internet Recovery. After That I updated it to Sierra 10.12 by using bootable USB. Installation of Sierra took almost 10 hours which is really more than enough. And after the complete installation I am not able to perform any action on my macbook since kernal_task is eating up all the CPU. Its varying from 10 to 1000 sometimes.. I have nothing installed in the macbook. No extra applications. The configuration of my Mac is as follows -



MacBook Pro Mid 2012 (MacBookPro9,2) 13"

RAM - 8 GB

HDD - 500GB

Processor - i5 with 2.5 Ghz



==================



I have tried following things with no luck



1. Resetting SMC, PRAM, NVRAM etc,

2. Opened my macbook and cleaned fan dust

3. Tried this fix- http://www.rdoxenham.com/?p=259





I am in trouble with this issue. Any help would be highly appreciated.



Hardware Information: ⓘ

MacBook Pro (13-inch, Mid 2012)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Pro - model: MacBookPro9,2

1 2.5 GHz Intel Core i5 (i5-3210M) CPU: 2-core

8 GB RAM Upgradeable - [Instructions]

BANK 0/DIMM0

4 GB DDR3 1333 MHz ok

BANK 1/DIMM0

4 GB DDR3 1333 MHz ok

Handoff/Airdrop2: supported

Wireless: en1: 802.11 a/b/g/n

Battery: Health = Normal - Cycle count = 529



Video Information: ⓘ

Intel HD Graphics 4000 - VRAM: 1536 MB

Color LCD 1280 x 800



Disk Information: ⓘ

APPLE HDD ST500LM012 disk0: (500.11 GB) (Rotational)

[Show SMART report]

EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB

(disk0s2) <not mounted> [CoreStorage Container]: 499.25 GB

Recovery HD (disk0s3 - Journaled HFS+) <not mounted> [Recovery]: 650 MB



HL-DT-ST DVDRW GS41N ()



USB Information: ⓘ

USB20Bus

hub_device

hub_device

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Computer, Inc. IR Receiver

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

USB20Bus

hub_device

Apple Inc. FaceTime HD Camera (Built-in)

USB30Bus



Thunderbolt Information: ⓘ

Apple Inc. thunderbolt_bus



Virtual disks: ⓘ

Macintosh HD (disk1 - Journaled HFS+) / [Startup]: 498.88 GB (478.61 GB free)

Physical disk: disk0s2 499.25 GB Online



System Software: ⓘ

macOS Sierra 10.12.6 (16G29) - Time since boot: less than an hour



Gatekeeper: ⓘ

Mac App Store and identified developers



System Launch Agents: ⓘ

[not loaded] 7 Apple tasks

[loaded] 188 Apple tasks

[running] 86 Apple tasks



System Launch Daemons: ⓘ

[not loaded] 42 Apple tasks

[loaded] 176 Apple tasks

[running] 99 Apple tasks



Internet Plug-ins: ⓘ

QuickTime Plugin: 7.7.3 (installed 2017-09-10)



3rd Party Preference Panes: ⓘ

None



Time Machine: ⓘ

Time Machine not configured!



Top Processes by CPU: ⓘ

330% kernel_task

18% kextcache

12% system_profiler

5% mds

5% trustd



Top Processes by Memory: ⓘ

760 MB kernel_task

284 MB kextcache

252 MB com.apple.WebKit.WebContent

248 MB system_profiler

133 MB mds_stores



Top Processes by Network Use: ⓘ

Input Output Process name

18 KB 6 KB mDNSResponder

5 KB 3 KB apsd

5 KB 669 B keyboardservicesd

480 B 1008 B ntpd

906 B 558 B netbiosd



Top Processes by Energy Use: ⓘ

15.22 kextcache

8.80 system_profiler

4.26 trustd

3.56 mds_stores

3.36 mds



Virtual Memory Information: ⓘ

5.37 GB Available RAM

3.22 GB Free RAM

2.63 GB Used RAM

2.15 GB Cached files

0 B Swap Used





Diagnostics Information: ⓘ

2017-09-10 02:01:42 mtmd Crash [Open]

Cause: dyld: launch, loading dependent libraries

2017-09-09 15:55:27 ??? Crash [Open]

 

[Audit13]

Are you getting the beachball effect too? Did you erase the hard drive before installing the OS? Tried booting from an external drive to see if the problem still exists?

 

[krishnads03]

Are you getting the beachball effect too? Did you erase the hard drive before installing the OS? Tried booting from an external drive to see if the problem still exists?

Hello Audit13, I erased my derive before rebooting. I tried to boot from USB drive but the progress bar with the apple logo stuck at the end so not able to boot from USB. I installed fresh OS X from internet and then downloaded Sierra from App Store.

 

[Audit13]

Is the computer sluggish when booting and running off an external drive?

 

[krishnads03]

Is the computer sluggish when booting and running off an external drive?

When I am trying to boot it from USB drive, it is taking a long and getting stucked with the apple logo and the progress bar only. No progress after that. And when i installed after download from app store it took almost 10-12 hours to install Sierra.

 

[Audit13]

Do you have an external drive that can be loaded with a fresh OS? If yes, do that and see what happens.

It could be a defective hard drive cable that is causing the problem.

 

[krishnads03]

Do you have an external drive that can be loaded with a fresh OS? If yes, do that and see what happens.

It could be a defective hard drive cable that is causing the problem.

Ok Thanks. I will try that. And if this is the case then what will I need to do to fix this ?

 

[Audit13]

If you have an Apple store near you, you can take it there for diagnosis. A failed hard drive cable is common on the 2010 to 2012 13" MBPs and people have reported getting replacements from the Apple store.

 

[krishnads03]

If you have an Apple store near you, you can take it there for diagnosis. A failed hard drive cable is common on the 2010 to 2012 13" MBPs and people have reported getting replacements from the Apple store.

Ok thanks for your kind response. I will try your suggestion and will report the results..

 

[Audit13]

Good luck. I hope the solution is as simple as changing the drive cable.

 

[krishnads03]

Good luck. I hope the solution is as simple as changing the drive cable.

Yes, thanks. ! As per your suggestion I have made an order of drive cable. But I am still surprised that how a damaged drive cable forcing kernal_task to eat up all CPU. No problem in booting. Only the Mac has gon super slow. I want to know the reason for the knowledge base.

Thanks..!