10.3.8 update sets off Mac fans... literally
Both the Apple discussions board
and Macintouch reports issues with G5 fans after updating to
10.3.8. The fans appear to spontaneously rev up quite loudly at as-yet-undetermined times - one reader reports fan
revving during bootup, another during Entourage mail check, even one reported revving fans while scrolling in
Safari.
So there seems to be some association of fan revving with application usage across the board, perhaps. Has anyone who
updated seen this?
(Thanks to Michael for the tip!!)

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Reader Comments (Page 1 of 1)
Varun Seth said 4:14PM on 6-16-2005
Had the same problem with my dual 1.8 G5, very annoying!!!
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ian said 4:14PM on 6-16-2005
Yes, i have, it's weird, the fans are no longer tied to the processor usage
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Jack Beckman said 12:47AM on 7-09-2005
No problem on my Dual 2.0. No odd fan behavior at all.
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Ryan said 10:27AM on 10-24-2005
This was actually a problem before the update. :)
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Roger said 11:30AM on 6-24-2005
I definitely noticed this with my 2.5DPG5.
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ethan said 2:33AM on 9-26-2005
If anything I've seen fan reving decrease significantly since the update. The machine is much quieter. Its a dual 2.5ghz.
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Karen said 4:14PM on 6-16-2005
MacFixIt mentioned that setting the processor performance to "Highest" rather than "Automatic" in System Preferences/Energy Saver/Options fixes it and it worked for me - I guess some of those who don't notice any fan effect from 10.3.8 may already have this preference set to "Highest".
I don't understand why the fans would need to run more at "Automatic" than at "Highest" though! I guess Apple may eventually fix this in Tiger.
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David Wilson said 10:39AM on 7-13-2005
When it says "G5" does that include the iMac G5 or is this limited to just the Power Macs?
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Paul S said 4:14PM on 6-16-2005
I am having the same problem with a Rev B G5 2Ghz DP. The fan runs fast for 4 or 5 secs when I start an application, or when I scroll down a web page fast with the scroll wheel. Hopefully, they will fix it soon.
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Fazal Majid said 4:14PM on 6-16-2005
I haven't had the fans blow really hard since I updated, but yesterday night and this morning, the fan sound, while relatively low, was pulsating for a short while with a period of 2-3 seconds, which is kind of annoying.
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bryan said 4:14PM on 6-16-2005
keep losing connection to my wireless router, then when i switch airport card off and back on i cant see the router until i reboot it. then i can connect again.
other macs running 10.2 and windows pc seems fine.
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John Frank said 4:14PM on 6-16-2005
i have too had this issue, and wondered what the hell it was, since i've never heard my g5 do that, EVER. for me it happened when i was importing a cd into itunes, and trying to run virtual pc at the same time. i hope they fix this.
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Yoav Weiss said 4:14PM on 6-16-2005
i've had this problem - it happens when viewing flash files in safari - fans kick up and are really annoying. i just set to "highest" - hope this fixes things...
Reply