HT203171: If your pointer is jumpy when you use a trackpad, Magic Trackpad, or Magic Mouse
Learn about If your pointer is jumpy when you use a trackpad, Magic Trackpad, or Magic Mouse
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Helpful answers
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Feb 14, 2013 8:28 PM in response to ejhmaby LeJaguar,I had the same exact thing happen to me today, out of nowhere. It was working one minute, and then it became possessed, even without touching it at all. It would just jump all over the screen, clicking, right-clicking on things, I was afraid it was going to start forward emails to random people.
Did a PRAM / RAM reset like Apple tech told me. Seemed to do the trick, however, I did notice it just did it a little bit, but so far hasn't. Apple tech told me to repair disk permissions, and then finally, re-write the OS system.
I'll keep checking back to this to see what this might be, seems like a hard ware issue, but unsure. Good luck!
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Mar 4, 2013 5:15 PM in response to ejhmaby eshute,Try cleaning the trackpad if you haven't already, as this fixed my erractic trackpad. I updated and the next day the track pad started working erractically. I tried all kinds of things, but cleaning it worked.
To fix it, I turned the computer off, used a cleaner for my eyeglasses and made sure I cleaned the trackpad really well. I used a tip of a needle to clean out the edges of the trackpad, as it was dirtier than I thought. Maybe something about the update makes the trackpad more sensitive to dirt. In other threads I read not to use hand lotions before using trackpad and to keep the trackpad as clean as possible.
This completely solved the problem.
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Mar 27, 2013 3:44 PM in response to eshuteby Lara_au,After installing 10.8.3 my trackpad went nuts... Did the Killall Dock followed by cleaning it thoroughly and still the thing is completely out of control, moves on its own account. I am positive that it was something to do with the OS upgrade because it started immediately after.
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Mar 27, 2013 3:48 PM in response to ejhmaby steve359,If you are going to clean it, please DO follow these precautions:
The unit should be turned off (not just sleeping)
Use only a soft cloth that is damp (not dripping) with alcohol-based cleaner that evaporates quickly (water just sits and corrodes)
The corners are less relevant the the center portion where body oils accumulate -- do not force anything hard