MacBook Pro (17-inch, Early 2009): Brightness level affected by operating system versions

The operating system installed on MacBook Pro (17-inch, Early 2009) computers should be Mac OS X v10.5.6 or later, with a minimum build of 9G2141 or higher.  Running an older version of the operating system with less than a minimum build level of 9G2141 will cause the display to appear less bright.

This article has been archived and is no longer updated by Apple.

Installing the latest version of the operating system will return the display to its normal brightness levels.  Choose Software Update from the Apple menu to automatically check for the latest Apple software.  Apple Downloads offers a standalone installer that you can use instead, if you wish.

To check the build level of your operating system:

  • Choose About This Mac from the Apple () menu.
  • Click the version that is listed in the About This Mac window.  The build number appears.

The Mac OS X Install DVD included with the MacBook Pro (17-inch, Early 2009) should have the minimum build of 9G2141 or higher.

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