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Re: Bug#501137: ITP: acerfand -- Control the fan of the Acer Aspire One

On Tue, Oct 07, 2008 at 05:30:12PM -0500, Gunnar Wolf wrote:

> Matthew, and out of personal curiosity (as I will probably continue to
> use this, at least until something better comes along): What does the
> danger amount to? Say, a random lock-up? Or will it lead to hardware
> malfunction (or shorter lifespan)? I am currently setting the
> fan-on threshold at 70C, the fan-off at 60C (the default settings for
> acerfand) 

It really depends on how the hardware is designed, but an example would 
be where the kernel ends up reading the incorrect register when checking 
the temperature and misinterprets it as requiring a critical thermal 
shutdown. Lockups are certainly possible, and it's just about 
conceivable that you could cause hardware damage - though that's a bit 
of a stretch.

Matthew Garrett | mjg59@srcf.ucam.org

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