Why is my mouse (double-)clicking on its own?!

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Level 1

1 points

Why is my mouse (double-)clicking on its own?!

My mouse is randomly clicking by itself, often after I have made a click prior to it (acting like an unintentional double-click), but sometimes completely out of the blue.

This started to occur right after I upgraded my laptop to Yosemite. I use an external mouse, so my first thought was "hardware problem". So I bought a new mouse, but the problem still existed. After that I have tried a handful of different mice (even the built-in trackpad) so there is definitely a problem with the software.

I have searched through numerous forums and sites for a solution, but haven't found one.

Anyone who have experienced this, know the solution or what to do?

Thanks in advance!

MacBook Pro, OS X Yosemite (10.10.1)

Posted on Jan 6, 2015 10:04 PM

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Answer 1

John Galt

Level 10

141,060 points

Jan 6, 2015 10:33 PM in response to Canariful

A number of phenomena can cause this to occur, including a failed battery that expands, exerting pressure on the trackpad from beneath it. Check your battery's condition.

Also, if it occurs only when you are using an aftermarket power adapter, it should be replaced with a genuine Apple power adapter:

Portables and Magic Trackpad: Jumpy or erratic trackpad operation

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Answer 2

Canariful Author

Level 1

1 points

Jan 6, 2015 10:39 PM in response to John Galt

Thanks.

I am using an Apple power adapter, and I have the track pad turned off while using another mouse. Didn't solve it.

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Answer 3

John Galt

Level 10

141,060 points

Jan 6, 2015 10:52 PM in response to Canariful

Perform an SMC reset. Be sure to read the procedure carefully and follow all the steps exactly as written, even if they seem inapplicable or trivial.

Bluetooth interference is another potential cause. Turn off Bluetooth and determine if the problem persists.

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Answer 4

Jan 24, 2015 12:53 PM in response to John Galt

I had exactly the same problem with my Macbook Pro - mouse pointer with a mind of its own, folders opening spontaneously etc etc. For 2 weeks it was driving me nuts. Tried everything until I came across a site that advocated slapping the trackpad with an open hand. Has worked perfectly ever since!

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