For those who have reset PMU . . . ?

For those who have tried resetting the PMU to solve various problems including the whine issue and the "failure to wake from sleep" issue:

When you perform the PMU reset as stated, when your computer restarts to desktop, do you get the message that says the settings on the clock and some other settings may have been reset? For some reason, I do not get this message when I boot back to desktop, so I am concerned that my PMU may actually not be resetting. Please let me know what others experience with this has been?

-JB

1.83 GHz MBP, 1GB RAM, Mac OS X (10.4.5), 20 GB iPod w/ click wheel (4th Gen.), Airport Express

Posted on Mar 29, 2006 3:36 PM

17 replies

JoelH

Level 1

0 points

Apr 20, 2006 12:31 PM in response to MacBook Pro Attorney

I do it a little different.

I shut down my computer....Then hold down the power
button without letting it up. In a few moments, the
sleep light will flash and there will be a tone.
After the tone sounds, let go of the power button.

Then, press the power button to restart.

Bob...isn't this how it used to be. When I tried the
thing without the battery in, I was not sure that
there was an actual reset.

Is what I am doing resetting something other than the
PMU?

I am pretty sure that is the firmware download sequence. At least that's the instructions for the firmware updates.
-- J.

Apr 29, 2006 7:25 PM in response to jbiedlin

Hello People the PMU "Power Management Unit"
it handles all your hardware settings so if you have a hardware problem... TRY RESETTING PMU
mem or video issues reset PRAM

and another reason you people are not getting the message after reboot is because you may still have internet connection attatched to computer "wired or wireless"

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For those who have reset PMU . . . ?