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I've got a frustrating problem that seems to have cropped up within the last two months or so.

Infrequently, the left (primary) click stops registering with the OS, so I can't really click on anything. My mouse moves around the screen, I can right (secondary) click, but I just can't perform a primary click.

I'm running 10.6.8 on an Early 2011 MacBook Pro (http://support.apple.com/kb/SP619). The click stops registering both on the trackpad and my Magic Mouse.

A restart solves the problem.

Any ideas?

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What happens if you remove secondary click from the magic mouse configuration so it becomes a single button mouse with both sides giving primary click? Does it still lose the the primary click? –  Stu Wilson Jan 13 '12 at 23:22
    
Haven't tried that. It happens infrequently, so I'd hate to give up my right click, but perhaps I can give it a shot for a day or so to see what happens. What's your reasoning for trying this? –  djibouti33 Jan 13 '12 at 23:26
    
Purely to confirm as a software issue. If the right hand side exhibits the same issue as the left then it's software (which given you have a similar issue with the trackpad is almost a given). If RHS does not exhibit the same issue, then software is less likely but makes your trackpad issue an oddity. I'm betting the issues will continue but can't for any good reason think of a reason why unless there's a memory leak in the driver –  Stu Wilson Jan 13 '12 at 23:38
    
I stated having the same problem with an older macbook pro (2008) without a separate trackpad or mouse. Added a track pad, think the built in one had died. No luck. add a logitech usb mouse. Works for a while (and so does the trackpad). then dies. Only the primary click goes away. It act to me like some sort of memory leak that overwrites the control of the primary mouse click. –  user17214 Jan 16 '12 at 16:51
    
You running anything that might be interfering with clicks, like a third party driver? –  Steven Fisher Apr 26 '12 at 2:57

2 Answers 2

  • Double check that you don't have any stuck keys on your keyboard by testing all the keys, particularly the modifiers (shift, option, etc).
  • Make sure there aren't any wizards, alerts, or dialogs hidden behind existing windows or in other spaces (this one gets me often, especially running the odd mix of programs I use daily).
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I posted this in another thread, It fixed the single click issue for me.

http://apple.stackexchange.com/a/130552/78030

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