Plain and simple here: about one week ago, my MacBook Pro stopped adhering to its wake schedule. I have had it set to wake every weekday at 6 a.m. for as long as I can remember. It has done so with 100% reliability as long as a power source is plugged in and the lid is open. Then it stopped. I finally went and checked the power savings pref pane this morning, and all is right with the world. I tweak my computer all the time, but have not done anything with this setting, nor have I installed anything that was advertised to affect power management. That being said, should I reset the SMC? This doesn't really seem to fall under what apple would normally recommend this for.


1 Answer 1


This could be related to the SMC or the PRAM. The System Management Controller controls everything related to power on your Mac. I would reset this first, and then reset the PRAM right after. Let us know if that works. You may have to reset the sleep schedule after resetting the PRAM.

  • I'll reset SMC tonight and see if that does anything before I reset PRAM. I'll post tomorrow with an update.
    – soxman
    Jan 25, 2012 at 18:24
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    Spontaneous remission. I woke up this morning and it was on, as scheduled, without resetting SMC. Not sure what's up, but thanks for the reply, and I'll definitely give SMC reset a go if it acts up again.
    – soxman
    Jan 27, 2012 at 6:09

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