Spurious thermal shutdowns on Dell Studio 1557
freebsd at chillt.de
Sun Apr 4 00:02:43 UTC 2010
> I use $20.00 USD aluminum cooling pad with the pair of built-in
> USB-powered fans when doing buildworld and/or compiling something
> comparably heavy.
I have no problem with using such a contraption. What still has me
confused though is that I built world and 700 ports before hitting the
first thermal-related shutdown. How come the problem only appeared after
a couple of months? Dust buildup - that quickly?
> It is really hard to second guess what Windows does if _PSV> _CRT.
True, it might be doing some magic. The only Windows installation I have
is inside VirtualBox - so I cannot investigate what it would do under
Right now, I am running with _PSV and _CRT swapped, as per Ian Smith's
suggestion (_PSV=85.0C and _CRT=95.0C). While building KDE, the machine
just hit 85°C. Passive cooling successfully prevented the temperature
from increasing beyond 87°C - but at huge cost: it reduced the CPU speed
to 119 MHz.
I have upgraded the two stacks of post-it notes at the back of the
machine to packs of handkerchiefs. This increases the space between desk
and laptop from 1cm to 3cm and seems to reduce temperatures a bit.
Dell's stock laptop feet are only 5mm tall... so having to do this is
odd yet again.
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