3 Replies Latest reply: May 1, 2012 2:20 PM by Mark Barber1
Mark Barber1 Level 1 Level 1 (5 points)

When I open my macbook, the screen remains black (as though it's in sleep mode). Adjusting the brightness always fixes this problem, but this is a temporary fix. The brightness is not at zero when I adjust it after opening, often I need to dim the screen to reactivate it.


This problem is not:

  • related to *clamshell mode*
  • related to unintentionally dimming the screen.
  • related to any of the settings in the Energy Saving panel in system preferences


Extra info:

  • The computer seems as though it doesn't actually enter sleep mode when I close the computer.
  • I don't think there are any processes running that would prevent sleep mode.


I really just want the computer to go to sleep properly when I close the screen and more importantly, that it wake-up when opened, or at least when a button is pushed aside from the brightness buttons.



MacBook Pro, Mac OS X (10.7.3)