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Solving a mysterious PowerBook battery drain issue System
Okay, this may seem like a no brainer ... but it wasn't for me until I figured it out. If you are experiencing mysterious power drains on your PowerBook when running on battery power while it is (or should be) sleeping, check your mouse. The drain could be because the mouse is waking it up -- even while the cover is closed. Be sure to discconect any external pointing devices before the machine is put to sleep.
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Solving a mysterious PowerBook battery drain issue | 7 comments | Create New Account
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I've got the drain but...
Authored by: mmcroberts on Jan 23, '03 12:24:38PM

I don't have an external mouse plugged-in. This only seems to have come up since about 10.2.1 or so. Ever since then, if my TiBook 550 is sleeping for more than 3 hours or so, there's no juice left when I open it back up. No external devices attached at all... I do have an airport card, but this even happens when Airport is turned off. Maybe the glitch is that Aiport cards aren't properly powered down in some Jaguar releases.



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Unplugging USB's wakes it up
Authored by: Allan Doyle on Jan 23, '03 01:12:45PM

I've found that if I close the lid, then pull out my USB mouse plug, the TiBook wakes up. I had a few battery drain incidents before I noticed this. I'm very careful now to unplug everything before I close the lid and I haven't had any problems.



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I've got the drain but...
Authored by: nvdingo on Jan 23, '03 01:17:19PM
You may need to reset the power manager. see this previous article resetting a laptop's power manager

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I've got the drain but...
Authored by: gizmovision on Jan 24, '03 06:58:59AM

I reset power management when I got my iBook back from service it does this very often wakes from sleep but not and the mouse is always waking and sleeping. its when I put the lid down it does this if I hit the power button and tell it to goto sleep its fine...
should I reset the power management again?



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Battery going dead?
Authored by: derrickbass on Jan 24, '03 04:46:06PM

The problem may be your battery. I noticed that my PB was draining very quickly, and thought it might have something to do with an OS upgrade. Then I bought a second battery (so I can compute through an entire cross-country flight) and it lasts considerably longer, both when sleeping and when working.

You may want to see if you can swap batteries with a friend before investing $$$$ in a new one, though.



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Battery going dead?
Authored by: Felix on Jan 25, '03 01:46:09AM

>> You may want to see if you can swap batteries with a friend before investing $$$$ in a new one, though.

What does that mean? That you should palm off the bad battery on your friend???



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Still too much....
Authored by: Azark on Jan 23, '03 06:21:40PM

Without any device attached my Ti-GHz loose around 10% of battery power on one night. That's a lot IMHO. I use to put it to sleep for travelling, now I shut it down. Annoying. (OS 10.2.3)

And yes I reset the PMU and PRAM regulary.

Is it "normal" or can something cause this?



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