RoXy1988

Q: MBP  Running slow when its on batteries .. working fine when plugged to the charger ?!

Hi there !
I noticed that my MBP is running very slow when it's on batteries.. but when plugged to charger it works fine..

Is the battery drained already ? I purchased it OCT 2011 but has been using it lightly for almost 5 months .. 

P.s : I cleaned it up coz I thought its a space or piled files issues but it didn't work

 

 

 

Thank u in advance

MacBook Pro, Mac OS X (10.7)

Posted on Jan 5, 2013 1:14 PM

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Q: MBP  Running slow when its on batteries .. working fine when plugged to the charger ?!

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  • by Blakeman7,

    Blakeman7 Blakeman7 Dec 11, 2014 10:22 AM in response to tony_stead
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    Dec 11, 2014 10:22 AM in response to tony_stead

    Seriously, thank you. I took my computer in to Apple twice and called in to Apple support with no luck. They wanted to erase my hard drive and do a clean install of Yosemite. I chose not to let them because I have some good software, once deleted, I can't replace for free, like Office and Photoshop.

    After reading your post and seeing all of the thank you replies to your post, I knew there was a chance.

    Sure enough, after deleting the computer identifier in my system library, my computer works great!

    Before deleting the file, when I unplugged my laptop, my CPU percentage would go up from 3% to 35% and the trackpad would skip around and become unusable. The computer acted like it was running on half power.

    After deleting the identifier, my CPU usage went down to normal and my computer works as expected. I'm using it on battery right now.

    Thank you very much.

  • by freesome19,

    freesome19 freesome19 Dec 25, 2014 12:04 PM in response to tony_stead
    Level 1 (0 points)
    Dec 25, 2014 12:04 PM in response to tony_stead

    Dear Tony,

    My MBP (2012) slowed down abruptly and after trying a few fixes (That dint work) I downloaded and installed Yosemite but in vain.

    It made things worse actually and I worked under 'safe mode' for a few days before I reinstalled Yosemite.

    Then I realized that my MBP would work fine when plugged in.

    Called apple support and played 21 questions but no improvement.

    Was a little apprehensive when I came across your post given the 'disclaimer'

    I finally mustered up the courage to copy the kext file on to my desktop and then deleted it from the original location, emptied the trash and restarted my computer.

    VOILA !

    A million thanks to you sir !

  • by Krunalshah,

    Krunalshah Krunalshah Dec 27, 2014 12:30 PM in response to tony_stead
    Level 1 (0 points)
    Dec 27, 2014 12:30 PM in response to tony_stead

    That worked!!! a beer for you!!!!

  • by ejvfrag ,

    ejvfrag ejvfrag Jan 28, 2015 5:12 AM in response to RoXy1988
    Level 1 (0 points)
    Jan 28, 2015 5:12 AM in response to RoXy1988

    Thank you tony_stead. It worked on my MBP 2011.  The problem is solved.

  • by Yodler,

    Yodler Yodler Jan 28, 2015 6:13 AM in response to ejvfrag
    Level 1 (0 points)
    Jan 28, 2015 6:13 AM in response to ejvfrag

    Thank you for your reply. I had this problem when I was on 10.7.6 but when I upgraded MacBookPro8,1 to Yosemite I tried what worked before (removing the kext file with the MBP identifier) and ....the hierarchy down to the kext file is no longer there  or not where it was before under Extensions.or under a different name.....

    Yosemite works blazing fine when on the charger but wheels and jumping cursor make working impossible when a healthy fully charged battery...

    Needless to say your suggested fix worked on 10.7.6 just great....

  • by lucksun,

    lucksun lucksun Feb 17, 2015 6:54 PM in response to tony_stead
    Level 1 (0 points)
    Feb 17, 2015 6:54 PM in response to tony_stead

    Tony, I had exactly the same problem on my Macbook pro 8,1 and was searching for the solution for a whole month. It works like a charm now and your help finally solved it !  Thank you very much for sharing your experience.

  • by dexter_lm,

    dexter_lm dexter_lm Mar 6, 2015 1:50 AM in response to tony_stead
    Level 1 (0 points)
    Mar 6, 2015 1:50 AM in response to tony_stead

    I am experiencing similar problem as everyone else in this discussion. I would like to perform deleting of the aforementioned .kext file, however, due to already using Yosemite, I can no longer find it in my library. Are there any suggestions, how to perform this on Yosemite? Any help will be much appreciated.

  • by njc220,

    njc220 njc220 Mar 31, 2015 3:45 AM in response to tony_stead
    Level 1 (0 points)
    Mar 31, 2015 3:45 AM in response to tony_stead

    You really are a legend! I'm typing off the mains now. If Id tried this 10mins ago it would have taken me all day!! Thanks again.

  • by njc220,

    njc220 njc220 Mar 31, 2015 3:46 AM in response to dexter_lm
    Level 1 (0 points)
    Mar 31, 2015 3:46 AM in response to dexter_lm

    I did it on Yosemite.

  • by kakrala17,

    kakrala17 kakrala17 Mar 31, 2015 4:16 AM in response to tony_stead
    Level 1 (0 points)
    Mar 31, 2015 4:16 AM in response to tony_stead

    thanks

    its worked on Yosemite

  • by robolike,

    robolike robolike Apr 25, 2015 2:33 PM in response to tony_stead
    Level 1 (0 points)
    Apr 25, 2015 2:33 PM in response to tony_stead

    After years of searching you have finally fixed my issue. Thank you so much.

  • by Fzarnegar,

    Fzarnegar Fzarnegar May 7, 2015 2:53 PM in response to tony_stead
    Level 1 (0 points)
    May 7, 2015 2:53 PM in response to tony_stead

    Superb...Thanks...I was almost out of option and thinking to through my mac out and buy a new one....You are a saver

  • by JenniLev083014,

    JenniLev083014 JenniLev083014 Jun 9, 2015 3:51 PM in response to tony_stead
    Level 1 (0 points)
    Jun 9, 2015 3:51 PM in response to tony_stead

    OH MY GOSH! THIS WORKED!!!!!!! OH MY WORD! I CANNOT THANK YOU ENOUGH!!!! I thought I was going to have to pay everyone everything I had! I wish I had known this much this morning!! I've been spending all day trying to figure it out!! THANK YOU! THANK YOU! THANK YOU!!!!

  • by sanjayp20,

    sanjayp20 sanjayp20 Jul 4, 2015 10:06 AM in response to tony_stead
    Level 1 (0 points)
    Jul 4, 2015 10:06 AM in response to tony_stead

    Thanks a lot. I have been finding a solution for this from about a year and finally the solution provided by you has worked. Thanks again bud!

  • by ladylazarus,

    ladylazarus ladylazarus Jul 11, 2015 10:41 PM in response to RoXy1988
    Level 1 (0 points)
    Jul 11, 2015 10:41 PM in response to RoXy1988

    Can someone help me? After I installed the beta El Capitan, the problem returned and it won't let me download the file (even as root it says it's blocked and I don't have permission). I don't know if it's a beta thing... I think I'll return to Yosemite, but if someones can help me I would appreciate

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