TommyOrsan
Level 1 (0 points)

Q: Trackpad become erratic and jump when adapter is plugged in

I have recently bought a new authentic Apple 60W MagSafe Power Adaptor, but when I start charging using this adapter, my trackpad becomes unresponsive, and  the cursor jumps around the screen when in contact with fingers. If I try to move the cursor, it jumps around and moves where I don't want it to go. The issue disappears when I remove my adapter. However, whenever I charge, the issue resurfaces.

The adapter is not a third party charger, and is brand new.

 

Using a Model A1322 60W MagSafe Power Adapter for MacBook

 

Running OS X 10.10.2 (Yosemite) on a Mid 2012 13 inch MacBook Pro with 2.5Ghz Intel Core i5, 4GB 1600 MHz DDR3 Memory

 

Any help on this issue would be very much appreciated

MacBook Pro, OS X Yosemite (10.10.2)

Posted on May 15, 2015 1:57 AM

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TommyOrsan

Q: Trackpad become erratic and jump when adapter is plugged in

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  • Helpful answers

  • by dominic23,

    dominic23 dominic23 May 15, 2015 3:39 AM in response to TommyOrsan
    Level 8 (41,986 points)
    Mac OS X
    May 15, 2015 3:39 AM in response to TommyOrsan

    Jumpy Trackpad

     

    http://support.apple.com/kb/TS1449

     

    Go step by step and test.

     

    1. Restart

     

    2. Shut down the computer.

        Clean the trackpad with moist not wet microfiber cloth.

     

        System Preferences > Point & Click

        Try turning off three finger dragging and then turning it on after  testing.

     

    3. Is there any Bluetooth device nearby with failing batteries? If so, replace the batteries.

     

     

      4. Reset PRAM:   http://support.apple.com/kb/PH14222

     

     

    5. Reset SMC.     http://support.apple.com/kb/HT3964

     

        Choose the method for:

        "Resetting SMC on portables with a battery you should not remove on your own".

     

    6. Close all windows and quit all applications.

     

        Click the Spotlight -the magnifying glass icon- in the menu bar. Enter Disk utility in the box.

     

        Select Disk Utility. When the Disk utility window opens up,

        select  Macintosh HD, then First Aid.

     

        Click Repair Disk  Permission

        Ignore the  time remaining estimate.

        Last 1 minute may take longer.

     

    7. Disconnect the power adapter from the wall and the computer.

        Reconnect and test.

        If this doesn't help, return the power adapter and get another one.

  • by Linc Davis,

    Linc Davis Linc Davis May 15, 2015 10:20 AM in response to TommyOrsan
    Level 10 (208,017 points)
    Applications
    May 15, 2015 10:20 AM in response to TommyOrsan

    The adapter is defective. Exchange it for one that works.

  • by CallumOak,

    CallumOak CallumOak May 31, 2015 4:14 AM in response to TommyOrsan
    Level 1 (0 points)
    May 31, 2015 4:14 AM in response to TommyOrsan

    Hi,

     

    I had this same problem but worked it out. I assumed the adaptor was putting some sort of interference into the body which was affecting the trackpad.

    So I cleaned out the connector on my mackbook pro to make sure there was nothing conducting to the body, which didn't change anything but is probably worth doing anyway.

    More importantly though I put some clear tape around the magnet to insulate it from the body on the bit where it touches.

    Photo on 31-05-2015 at 13.01.jpg

    The tape is clear so it might not be easy to see in the picture, I tried to catch the light.

    This seems to have solved the issue if you don't feel like going through the trouble of getting it replaced.

  • by pallo-finland,

    pallo-finland pallo-finland Aug 20, 2015 3:12 AM in response to TommyOrsan
    Level 1 (0 points)
    Aug 20, 2015 3:12 AM in response to TommyOrsan

    I found com.spigot.ApplicationManager when searching Console. I removed it from these locations, and trackpad seems to be doing fine now.

     

    ~/Library/LaunchAgents/com.spigot.SearchProtection.plist

    ~/Library/LaunchAgents/com.spigot.ApplicationManager.plist

    ~/Library/Application Support/Spigot/

     

    It seems to be adware:

     

    http://www.thesafemac.com/arg-spigot/