In a recent blog post of mine I said that since 10.5.2 update and the graphic update my external Apple Cinema Display is not working anymore.
Yesterday evening I applied the just released “Apple EFI Firmware update” and now this morning my MacBook Pro is working flawlessly with my external screen again!
I don’t know what Apple has done or if the firmware is the cause, but it is now working 100% even after rebooting the MacBook. As always Apple does not state much what the Firmware has changed, but I am sure happy they finally fixed it.
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