Re: overheating Thinkpad X60s with 7.0-RC1

On 1/6/08, Jeremy Chadwick <koitsu@xxxxxxxxxxx> wrote:


All temperatures were compared when the systems were idling.

The variance in temperatures was astounding. In some cases, there was a
almost a 20C difference between two machines, especially around the GPU
area. In other cases, batteries were reporting insane temperatures on
one laptop (over 90C), while on another well within scope (~25-26C).

Sounds crazy...


My particular laptop is a problem child when it comes to noise -- that
is to say, within literally seconds of the machine finishing POST, the
fan kicks on, then 15-20 seconds later, increases speed. My co-workers'
laptops do not have this problem. Cleaning out the heatsink area using
a can of air made no difference.

It is rather clean, I'd say. Just recently I changed the keyboard from
German version to US and then tried to blow off all the dust.


I won't even bother mentioning what happens when I run something that's
CPU or GPU intensive. I haven't had any crashes, but in some cases,
I've seen the GPU temperatures reach over 80C -- completely
unacceptable, and bordering on insane. It's gotten to the point where
to use my T60p *quietly*, I'm forced to prop the rear corners up on
little blocks or whatever, and then place a desk fan nearby, blowing
cold air more or less underneathe the laptop. This keeps the fan in low
speed mode, which is semi-tolerable.

Unfortunately this is not an option for me since I am running it at home in
the docking station.


I *haven't* had any crashes or random system lockups, but many other
co-workers of mine have, and it's safe to say heat is the cause.

In my opinion, most of these laptops (the T60p series, and very likely
related models!) are being assembled with improper amounts of thermal
paste or TIM pads, without proper surface area contact. Apple recently
had a case of this happening as well with their Macbook Pros, where
their assembly documentation stated they should use an *entire tube* of
thermal paste between the CPU and the heatsink.

I don't know why it should then show right now. I mean: could it somehow?
Within those 1.5 years of having it, it ran Linux and FreeBSD. And
always without a problem. Until now. And I really haven't touched
anything in the ACPI configuration.



Lenovo should be ashamed at the lack of quality control used when these
things are built. Again, this is a laptop given to me by my workplace
for work, so it's really not my choice (nor can I disassemble it to
examine or fix what the problem might be) -- but if I ever am to buy a
laptop for personal use, Lenovo would not be on my list of vendors.

I do agree with you that the quality has decreased dramatically since the
IBM/Lenovo deal, IMHO. Still they are the better ones on the market, IMHO.
Anyway...


I would urge those here to consider booting XP somehow (if possible) and
running tp4xfancontrol to check actual temperatures, since FreeBSD's
h/w monitoring capability is spotty at best (I think Linux wins out
here, but at least there's room for growth...)

Sorry. XP is killed completely and I would need to fix myself a HDD from
somewhere and install it from scratch...

What remains for me, is that it has never been a problem. Until 7.0. And if
there is no hardware failure coincidence, it must be a mysterious (at least
for me... ;-) ) software/configuration problem.

BTW: how certain can I be that the reported temperatures are REAL
temperatures?

Regards,

Johannes
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