Yesterday I collected my Macbook Pro from an authorized Apple Service Center, where they replaced some hardware components (logic board and battery-trackpad-keyboard block).

The SSD drive has not been replaced (according to the invoice), and it was encrypted with File Vault (OS X 10.9.3).

And yet, some settings have been changed. The ones I am 100% certain about are:

  • Accessibility settings, ignore built-in trackpad when a mouse is present. This was definitely checked, but it has been disabled.
  • other trackpad settings: tap to click. This was enabled and it's now disabled.

Is it because the trackpad has been replaced? I also did enable filevault right before bringing my mac to the service center, and I didn't really have time to notice any change then. Can these changes depend on file vault?

  • not sure what is the problem or the question here? some preference settings have changed? considering the major surgery I would not wonder. – Ruskes Jun 20 '14 at 21:01
  • Marking the question in bold. – tompave Jun 20 '14 at 21:56
  • I would like to know if what I describe is normal or not. If it's not normal, I wonder if the data on my encrypted SSD has been somehow tampered with. – tompave Jun 20 '14 at 21:58
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    The exact same thing has happened to my MBP. Just got it back with a new logic board, and everything is the same except that all trackpad settings were reset. So I'm going to assume now that it must be normal. Perhaps trackpad settings are stored in some kind of CMOS, like BIOS settings? – burriko Mar 19 '15 at 13:55

Some settings in OS X are “per machine” which is mostly derermined by MAC address. Since you for a replacement logic board that address has changed so OS X is using defaults since the settings for the former logic board do not match the hardware it is currently running on. This is normal and expected. Just set them again to your liking and you'll be fine.

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