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Uncontrollable Trackpad Pointer - Mojave - MacBook Pro retina early 2013

I posted this earlier in the OS/System Forum and thought it might be useful to post it in a hardware forum as well. Installation has now moved to a new stage where 29 minutes remains which should then show if there's been any improvement.


Previously posted:


Dear All,


I hope you will be able to throw some light on a problem with my son's MacBook Pro early 2013 retina running Mojave. He needs it for when he starts college shortly. The trackpad pointer is almost uncontrollable, very erractic, hit and miss, like trying to spear a bead of mercury.


I've done a full Time Machine backup and managed to start a Mojave reinstall, all very tricky because of the pointer problem. It is currently installing with 1hr 16min remaining and the mouse is dancing about the screen as it does so. Does anyone have any ideas what might be causing it?


I've cleaned it with Malwarebytes and with Swift X, done all the resets such as SMS and the disc repair utility options and had some wonderful help from Apple Support with a complimentary online session where they referred me to my local Genius Bar with a suspected hardware fault.


The Genius Bar looked at it yesterday morning and ran extensive hardware tests and of course it performed impeccably but played up again as soon I got it home. The genius bar tests bypassed the onboard system software running instead from a specialist Apple network which is why I think the problem might be the installed Mojave OS and system software having become corrupted.


It's now at 1hr 2mins remaining (exciting, isn't it) and I just noticed the mouse is no longer on screen which makes me strangely hopeful. If this doesn't cure it I will go for a clean install which I'm a bit nervous about as it wipes the drive completely which means a lot is riding on the Time Machine backup restoring properly. Documents and Desktop are in iCloud Drive so if a catastrophe happens they should eventually be retrievable, right?


Anyhoo, 57 minutes and counting.

Mac Pro

Posted on Aug 20, 2020 5:17 AM

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Posted on Aug 20, 2020 7:21 AM

The OS install sorted the problem. It's a flying machine again. Caveat: It will however need a clean install to remove the vicious malware that's causing the problem. It's hidden somewhere so that when I typed a Read Me file in Pages the pointer went mad again when I typed it dreaded name which is M which rhymes with hack, second word K which rhymes with beeper. I was eventually able to get the cursor over the word and delete it which returned complete control to the trackpad. This is particularly malicious and I hope Apple find out about it and counter it with an update eventually so that a very time consuming clean install with it's attendant risks of losing data if the Time Machine install malfunctions or the disc to which it's backed up.

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Aug 20, 2020 7:21 AM in response to AudiodromeUK

The OS install sorted the problem. It's a flying machine again. Caveat: It will however need a clean install to remove the vicious malware that's causing the problem. It's hidden somewhere so that when I typed a Read Me file in Pages the pointer went mad again when I typed it dreaded name which is M which rhymes with hack, second word K which rhymes with beeper. I was eventually able to get the cursor over the word and delete it which returned complete control to the trackpad. This is particularly malicious and I hope Apple find out about it and counter it with an update eventually so that a very time consuming clean install with it's attendant risks of losing data if the Time Machine install malfunctions or the disc to which it's backed up.

Uncontrollable Trackpad Pointer - Mojave - MacBook Pro retina early 2013

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