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No performance hit either
Authored by: CHM on Mar 04, '06 10:51:56AM

I forgot to mention that this doesn't tax the CPUs at all (at least not measurably with Activity Monitor) once you've turned the mirror widget back off.

Sound stays gone until restart. No penalty.



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No performance hit either
Authored by: CargoCult on Mar 04, '06 05:27:30PM
A few minutes ago, my MacBook was doing the high-pitched *VVVVVVRRT* noise when it was running off the battery. Connect up the power again, and it shut up. Disconnect power, noise was back.

So I downloaded the mirror widget, briefly started it up, removed it from the Dashboard and then deleted it entirely.

The sound has gone. Disconnect power, no change. Reconnect power, no change. Send MacBook to sleep -like so - wake it back up again, and the sound still hasn't returned.

Wow.

I thought it was some strange hardware thing, like a tiny, shrieking fan which changed behaviour depending on what the processor was doing - but maybe not. It's gone! (For now...)

Many thanks for your discovery; I'll be keeping a copy of the mirror widget thingy around for until Apple sorts out a software fix... ;-)

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No performance hit either
Authored by: CargoCult on Mar 04, '06 05:42:01PM

Hmm. Seems like having it in a non-VVRRRT-ing state uses the battery more quickly I had an estimate of ~2:54 instead of the usual 3:30 on a near-full battery.

Started Photo Booth up again, quit it and the sound is back - and the battery life estimate is back to 3:30 again. Odd.

(This was a HIGHLY unscientific test, and may be complete rubbish!)



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No performance hit either
Authored by: CHM on Mar 04, '06 11:19:40PM

Going off your comments, I just did the same thing. Started up Photobooth, quit it, the sound came back. Checked my battery life estimate, it said 2:04. Did the mirror widget trick. Sound went away. Battery life said 2:10. So I actually was getting estimated longer battery life. Maybe it's just the error in the estimates that happened for you and higher for me? At some point I'll try it again (multiple times) and see if the battery life estimates change.

Either way, it's better battery life with the mirror widget trick, then just leaving photobooth or iChate running with the iSight on, right?



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No performance hit either
Authored by: CHM on Mar 05, '06 09:07:18AM

OK. Round 2:

Better battery life setting: 3 different attempts: (switching rapidly)
begin (mirror widget, no noise): 1) 2:50 2) 2:46 3) 2:46
after photo booth start and stop: 1) 2:38 2) 2:48 3) 2:47
after redoing mirror widget trick: 1) 2:46 2) 2:40 3) 2:47

So far, it seems to be just statistical error in battery life error.

Better battery life setting: 3 different attempts: (counting to 10 between steps)
begin (mirror widget, no noise): 1) 2:37 2) 2:35 3) 2:25
after photo booth start and stop: 1) 2:40 2) 2:36 3) 2:34
after redoing mirror widget trick: 1) 2:36 2) 2:44 3) 2:34

Still seems like estimate errors. I guess a better measurement would be to monitor the battery life over the course of say, 1 or 2 hrs with and without that noise.



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