Just bringing my stone to the edifice:
Applied SMC update (1.16f11) to my theretofore flawlessly working MBP (2.4GHz, 16mth old). Did not have problems immediately (then again, rarely if ever, restart my computer).
Yesterday: would not come out of sleep mode after opening it. Force-shutdown (power button down for 5 s.), reboot and looks fine.
Today: does not come out of sleep mode and, when I force-restart: screen is dead.
Exact same problem as I've seen described at least once above:
- No matter how many times I restart, the screen remains pitch dark.
- Power light is on and slightly dimmed (but constant).
- Despite no display on, computer seems to be starting "fine": keyboard lights up, reacts to keystrokes, beeps...
- Tried PRAM reset, single-user mode, option key, spraying keyboard with blood of freshly slaughtered black hen on a moonless night: no dice.
What
finally did the trick for me was resetting the SMC. twice (or more likely the first time wasn't properly done):
- turn off computer
- unplug power cord
- remove battery
- press power button for a
long time (counted at least 15s on second attempt)
- put cord back (I didn't put the battery back initially: not sure if it matters)
- restart...
... and it worked!
I really do not feel safe putting it into sleep mode anymore, though...
Really wished Apple owned up to their latest screw-up and did something about it (no-question-asked warranty extension, for one).