Re: ThinkPad fan
On Friday 17 June 2016 08:22:02 Cindy-Sue Causey wrote:
> On 6/17/16, Cindy-Sue Causey <butterflybytes@gmail.com> wrote:
> > On 6/17/16, Dan Purgert <dan@djph.net> wrote:
> >> Francesco Montanari wrote:
> >>> I recently installed Jessie on a Lenovo ThinkPad T420. The fan
> >>> usage looks
> >>> reasonable. However, high temperatures (96 C) are reached when
> >>> CPUs are running intensively for more than one minute or so. The
> >>> fan speed at those
> >>> temperatures is about 4500 rpm.
> >>>
> >>> Do you think it is ok, or do you suggest to force lower
> >>> temperatures, e.g.,with thinkfan [1]?
> >>
> >> Absolutely. 95C is pushing the thermal thresholds of CPU dies
> >> (IIRC, 100C is the burnout temp on most). Clean your heatsink too.
> >
> > Consider this an emergency situation that needs immediately
> > addressed. For example, if I personally didn't already have my brain
> > circuits mentally locked up on fighting setting up home wifi, I'd be
> > searching the Net for an external laptop fan, the USB kind that sits
> > under the laptop (oh, and a replacement dialup modem). In the
> > meantime, I currently have a desktop fan faced toward mine, and it's
> > definitely helping.
>
> I literally hate when this happens. A thought occurred as fast as that
> last email was sent. Low income types like myself don't always have
> enough pennies to rub together to even buy a cheap fan of any kind on
> demand. Doesn't mean we've completely run out of alternatives. The
> dogs busted my first laptop fan's USB connection couple years ago, but
> I still used the stand part of it successfully as a coolant aid for
> another year or so (until they broke that, too).
>
> ANYTHING that can *safely* get a laptop off the desktop surface helps
> even if no extra fan is available in an emergency. Give air every
> chance possible to circulate all around the machine.
>
> Mine's currently sitting on top of... knitting needles. They're placed
> so that they are not near the hottest parts of the laptop and so that
> they do not interfere with any other type of airflow, either. Just
> another #Life Lesson Learned the Hard Way due to losing couple
> machines over the years k/t the whole low income thing,
> yada-yada-grin...
>
> Cindy :)
I would saw a couple of the old, small matching sized thread spools in
two, cutting so you have a long half and a short half. Put the short
ones under the front edge, and the long ones under the rear edge,
possibly securing them beside its existing feet with some fabric glue
I'd expect you have in the sewing kit. That would leave far more open
space for the heat to be carried away than the knitting needles would.
And that sort of glue would allow easy removal in the event you'd have to
open it and they are hiding an assembly screw.
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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