any thoughts on why cooling fan keeps spinning up and down?

[David Lam]

> > On 07/05/2009 02:21 PM, Robert P. J. Day wrote:
> >> On Sun, 5 Jul 2009, Robert L Cochran wrote:
> >>
> >> ... snip ...
> >>
> >>
> >>> I'll look into this, thanks. On the other hand I've opened up enough
> >>> system cases (including laptops) and cleaned more than enough dust
> >>> bunnies or coffee spills to realize fan speeds can have very
> >>> physical causes indeed. Don't think of the fan as "just" controlled
> >>> by operating system software. There is usually a physical reason why
> >>> the speed varies and that ought to be the first thing to check
> >>> before suspecting the operating system.
> >>>
> >>
> >>    this behaviour has been there since day one of installing f11 beta
> >> on this laptop, when it was new out of the box.
> >>
> >> rday
> >> --
> >>
> >> ========================================================================
> >> Robert P. J. Day                               Waterloo, Ontario, CANADA
> >>
> >>          Linux Consulting, Training and Annoying Kernel Pedantry.
> >>
> >> Web page:
> http://crashcourse.ca
> >> Linked In:
> http://www.linkedin.com/in/rpjday
> >> Twitter:
> http://twitter.com/rpjday
> >> ========================================================================
> >>
> >>
> >
>
> I've noticed some strange fan behavior on my laptop after upgrading to
> Fedora
> 11. Sometimes right after Fedora loads and I log in the fan is running
> where it
> is audible, but the temperature sensors show it's cold. After a couple
> minutes
> it settles down to normal where I only hear the fan if things get warm from
> heavy CPU or wireless use. I've also noticed that sometimes the Gnome
> battery
> indicator stays full when I'm running on battery. So there are more than a
> couple hardware glitches.
>
> --
> Jason Turning
>
> --
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hm, I think I've actually noticed the same thing as jason on my hp pavillion
laptop-- both with the fan (being loud) and the battery indicator since
upgrading to F11
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