Re: Thinkpads running hot

[Bernd Schubert <bernd-schubert-Mmb7MZpHnFY@public.gmane.org>]

Hello!

> But even I could find the EC address and value to set the fan on full speed
> (echo 0x2f 0x50 >/proc/acpi/ibm/ecdump - with ibm_acpi module)
> (>5000 instead of ~3700 rpm) , the machine still run very hot.

Blimey! Thomas, you can't imagine how happy you made me with this command. Not 
that this special command works on my R31, but I never knew how to write data 
to the EC-table. After the repair of my R31 (see below), they also adjusted 
the fan-trigger temperatures *grumble* making the fan more or less always 
running. It was rather easy to find the fan-trigger temperatures in the 
ec-table and now I finally can adjust it to normal data.

>
> However, when passive cooling works well, people shouldn't notice much.
> It seems as if these machines are designed to work with OS thermal
> management. The userspace governor works nicely and temperature stays at
> passive trip point with 1200 instead of 1700 MHz (even on 70 C passive tp
> limit it stays at 1200 MHz poking around 70 C - default is 92 C).

Hmm, about two years ago I had the same problem on my R31. I sent it to 
repair, wrote a nice explanation whats going on (about one a4-page), after 
not having it back after two weeks I called the repair-centre, they connected 
me with a technician - he didn't get my error-report, but when I explained  
him about the problem, he then seemed to know what to do. I got back the 
notebook two days after the phone-call, on the report about what they had 
done was written that the cpu-cooler was not properly connected to the cpu. 
Before the repair the cpu-temperature went up to more than 100°C, but now I 
can't get more than 80°C (at high load with fft calculations).
Maybe this is also an issue with recent thinkpads?

Cheers,	
	Bernd


-- 
Bernd Schubert
PCI / Theoretische Chemie
Universität Heidelberg
INF 229
69120 Heidelberg



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