Mac Pro 2006 fan activity while in Sleep Mode under SL

B

benborman

macrumors member
I upgraded my Mac Pro 2006 (full specs in sig) to Snow Leopard last weekend, and since I have noticed that random times throughout the night, or whenever my computer has been in sleep mode, the fans will all kick on in full blast (including the video card, I think). It is similar to when the computer is first turned on, or woke from sleep, except it doesn't turn on...just makes noise for about 5-10 seconds.

I haven't been able to really inspect the computer when it does this, as it is completely random, and usually wakes me up. I just look over, and its making loud noises...then stops.

My first thought is that this might be a Wake On Demand bug, but I don't have an Airport Base Station, just some D-Link router...but there are other Macs in the house.

Any ideas?
 
I have this problem too. I've noticed it a load of times now, and the behaviour is exactly as described by the OP. Is anyone else experiencing this odd behaviour?
 
I simply did a clean install of Snow Leopard and it corrected the issue - sorry I didn't post back sooner, there wasn't much interest in this thread/issue.
 
I'm experiencing this issue to. I ran the pmset -g log command and see the following entries at the time the mac pro's fans came on.

Code: 
 * Domain: applicationresponse.slowresponse
 - Message: PMConnection AirPort configd plug-in com.apple.powermanagement.applicationresponse.slowresponse 7062 ms
 - Time: 04/02/2010 06:37:45 GMT 
 - Signature: AirPort configd plug-in
 - UUID: DCE1493C-A865-4718-8871-2EF90222636E
 - Result: Noop
 - Response time (ms): 7062

 * Domain: applicationresponse.slowresponse
 - Message: PMConnection IPConfiguration com.apple.powermanagement.applicationresponse.slowresponse 7062 ms
 - Time: 04/02/2010 06:37:45 GMT 
 - Signature: IPConfiguration
 - UUID: DCE1493C-A865-4718-8871-2EF90222636E
 - Result: Noop
 - Response time (ms): 7062

 * Domain: applicationresponse.slowresponse
 - Message: PMConnection mDNSResponder com.apple.powermanagement.applicationresponse.slowresponse 8171 ms
 - Time: 04/02/2010 06:37:55 GMT 
 - Signature: mDNSResponder
 - UUID: 123D9DE4-CE7F-4F90-8C09-817A076D41F1
 - Result: Noop
 - Response time (ms): 8171

Also, on the console I see the following two lines.
Code: 
04/02/2010 06:37:45	Facebook Notifications[351]	Net status changed to 0
04/02/2010 06:37:47	Facebook Notifications[351]	Net status changed to 1

Can anyone interpret what's happening?

Cheers, Fred
 
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