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iG5 fans

Message #1 - Posted 2009/01/17 - Peter Ceresole

Today, my iMac G5 started running its fan faster than usual. It wasn't that noisy, not about to crash into the Hudson (or not, as the case might be) but just more than it should be. I looked in Activity Monitor, but the heaviest CPU activity was due to Activity monitor. And it was around 7%. This went on all day whenever the Mac was awake. To begin with, I could see that the sun was shining brilliantly onto the back of the iMac, so okay, winter's over... We went out to get a shopping life. Back this evening, woke the Mac and the fans gently ramped up. No good.

So, I tried the usual best thing; I restarted it.

And now after half an hour it's still almost totaly quiet. As it should be.

Why the hell would it do that?

Peter

Message #2 - Posted 2009/01/17 - Chris Ridd

On 2009-01-17 19:02:34 +0000, Peter Ceresole said:

Today, my iMac G5 started running its fan faster than usual. It wasn't that noisy, not about to crash into the Hudson (or not, as the case might be) but just more than it should be. I looked in Activity Monitor, but the heaviest CPU activity was due to Activity monitor. And it was around 7%. This went on all day whenever the Mac was awake. To begin with, I could see that the sun was shining brilliantly onto the back of the iMac, so okay, winter's over... We went out to get a shopping life. Back this evening, woke the Mac and the fans gently ramped up. No good.

So, I tried the usual best thing; I restarted it.

And now after half an hour it's still almost totaly quiet. As it should be.

Why the hell would it do that?

Dunno, but since there are several fans it might be worth knowing which one(s) specifically were going fast. That might identify what the machine thought needed cooling.

iStat's quite handy for showing the multiple fans/temperature sensors. --
Chris

Message #3 - Posted 2009/01/18 - Peter Ceresole

Chris Ridd wrote:

iStat's quite handy for showing the multiple fans/temperature sensors.

Thank you very much, Chris. It works very well and would have been very interesting to have. But right now, a day after the restart, it simply seems to show that everything is absolutely normal and okay. --
Peter

Message #4 - Posted 2009/01/18 - Chris Ridd

On 2009-01-18 04:15:44 +0000, Peter Ceresole said:

Chris Ridd wrote:

iStat's quite handy for showing the multiple fans/temperature sensors.

Thank you very much, Chris. It works very well and would have been very interesting to have. But right now, a day after the restart, it simply seems to show that everything is absolutely normal and okay.

Which you could probably have guessed by the lack of racing fans :-) --
Chris

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