MacBook Pro shutdown problem
I’ve been having a problem with my MacBook Pro shutting down at random time whenever it is attached to an Apple Cinema Display. The shutdown usually happened when I leave my desk and the screensaver activates, it will take a few minutes after the screensaver is activated for the computer to shutdown. The MacBook Pro is very stable when it’s not connected to the display.
After repairing the permission using Disk Utility and resetting the Power Management Unit (PMU) the problem continue to exist. I called Apple Technical Support and the technician told me to create a new account on Mac OS X and use it.
Today, the notebook would shutdown without the need to wait for the screensaver to activate. All I did was watch a quicktime movie and the MacBook Pro would shutdown automatically. So, for the third time this week, I called Apple again and the technician recommend me to reinstall Mac OS X and see if the problem persist.
I will reinstall Mac OS X on the weekend so I can backup my hard disk and do a clean install. If the problem continue after the reinstall then I should take my MacBook Pro to a service center for further investigation. It could be a problem with the video card since the shutdown happened when I watch quicktime videos or the screensaver activate (OpenGL)?
Does any MacBook Pro attached to a cinema display experience this? Please let me know, and let Apple know about it!