Fanspeed control on a P4

j0elbYte · Posted: Thu Feb 24, 2005 7:59 pm Post subject: Fanspeed control on a P4

My CPUfan is constantly spinning >3000 rpm (only in lnx). Seems I haven't got the right kernel config. I just installed a new mainboard, and after that, it doesn't seem to work anymore. I don't have the old config.
I've included the ACPI into the kernel, tried w/o CPU freq. scalng functions.
No apm is configured. acpid is installed and running.
Thankful for any suggestions or tips
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mathgeek · Posted: Fri Feb 25, 2005 10:27 am Post subject:

Hi!
I don't think it's a frequency scaling issue. Here is my ACPI config:

j0elbYte · Posted: Fri Feb 25, 2005 1:34 pm Post subject:

Thanks for replying...I dont think so neither. but I¨ve really tried those acpi settings.. (except the battery, AC and video modules since im using a stationary box without integrated videocard) Maybe there no problem with the config, but when I use MSI's CoreCenter or FuzzyLogic in Windows, it seems like a new "driver" is loaded and the fan gets alot smarter, decreasing its rpm etc. I'll keep messin' with it. Thanks
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yardbird · l33t Joined: 20 Apr 2002 Posts: 689 Location: nl.leiden

This is just a long shot, but anyway....

... have you tried the ACPI P-states CPUfreq driver? It can vary both frequency and voltage of the CPU (whereas other CPUfreq drivers vary only the frequency). Enabling it on my laptop massively cutted down spin-up time of the main fan.
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rmh3093 · Posted: Sat Feb 26, 2005 1:40 am Post subject:

hmmm im gonna try that out
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j0elbYte · Posted: Mon Feb 28, 2005 4:16 pm Post subject:

Thanks for the tip, but P-STATES didn't calm my fan. If / when i figurethis out, i'll post it here
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