Re: Source of buzzing determined for hp tc1100

[Nate Lawson <nate-Y6VGUYTwhu0@public.gmane.org>]

Joshua Wise wrote:
> Hi all,
> 
> Okay, so I have determined the source of the buzzing for the hp tc1100, 
> and I have a list of conditions to be met for the buzzing to show up. I 
> determined the following mostly by observation. To determine which ACPI 
> modules were causing issues, I whipped up a GOK keyboard to use pen 
> input to determine the problem-causer. I will make that keyboard 
> available on request.
> 
> So, without further ado, here are the conditions to be met:
>   * The system must be idle/
>   * The system must be undocked from the USB keyboard base.
>   * The system must be unplugged from 18VDC power.
>   * The processor module must be loaded.
> 
> If all of the above conditions are met, the system will emit a buzzing 
> from the CPU fan area. (Sometimes the system must be throttled above 75% 
> for the buzzing to occur.)
> 
> Has anyone any insight?

This is a faq, the answer is C3.

-- 
Nate


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