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Date: Sun, 30 Oct 2005 21:31:12 -0800
From: Nate Lawson <nate@root.org>
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To: Alexander Leidinger <Alexander@Leidinger.net>
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Cc: current@freebsd.org
Subject: Re: 1kHz noise from C3 sleep
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Alexander Leidinger wrote:
> Nate Lawson <nate@root.org> wrote:
> 
>>>>> My laptop makes noises when being (more or less) idle (I think I 
>>>>> enabled
>>>>> C3...). Does this mean I should try to change HZ?
>>>>
>>>>
>>>> Sure, you can do it from a tunable (kern.hz I think), you don't have 
>>>> to recompile.
>>>
>>>
>>>
>>> No, a HZ of 100 doesn't work, the laptop still makes noises. And it
>>> only has C2, no C3...
>>
>>
>>
>> Change to C1 (which is just HLT).  If it still makes noise, it's not 
>> your C2 or C3 sleep.
> 
> 
> It's the C2 sleep. Any ideas?

Try C3, different values of kern.hz.  Or earplugs.

-- 
Nate