Re: ThinkPad fan
On Friday 17 June 2016 15:01:39 Gene Heskett wrote:
> 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.
Like it: :-))
But it requires equipment, like a hacksaw and vice to cut the spools smoothly
and matching-ly, or your laptop would wobble. Not all of us have fully
equipped workshops, Gene. ;-)
But I love the idea! Really ingenious. Have you tried it??
Lisi
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