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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 01-23-2007, 02:22 PM   #1
Michael_aust
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Registered: Aug 2005
Location: Lancashire (United Kingdom)
Distribution: Debian Etch, on 686 machine.
Posts: 509

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lenovo c200, cooling questions, trip points?


Ijust bought a nice Lenovo 3000 c200 laptop. Every seems to work fine except fr two things I am not sure about.

The first si the sound does not work, but I do not wish to tackle that in this thread.

The second is the fans. Now the fans seem to be constantly spinning. They are not spinning fast, they are virtually silent,so I have to put my head close to the laptop to hear them spiining, but they are spinning all the time. I am pretty sure this was the case while I was using the pre-installed windows to create recovery cd's, I never noticed them not spinning quietly.

Now what I do not understand is, they never stop, nor they they speed up either. I only have Suse 10.2 to had for installing and all the while it was installing the fans never got any faster, they still stayed virtually quiet. It got a little hot, but nothing that feels out of the ordinary, about the same as the heat output by your psu. SO I am pretty sure this is within the cpu freshold (laptop cpu are built to withstand much higher heat than a normal desktop cpu because of the space limitations right?)

I do not fear the fans dying on me, seeing as they only seem to be spiining in a very low speed constantly, both while using Windows and Linux. But I am interested in possibly keeping the machine cooler, via frequency scaling (if supported) and via the fan trip points. I looked in the proc/acpi/fan/ directory but all the files to do with trip points konqueror said were empty and were 0 kbs.

What should I be looking at to setup the cooling things I have just mentioned above? Could anyone point me towrds some relevent guides etc please. At present it is running opensuse 10.2, but I will be installing Debian Etch as soon as I have the time to do so, so if possible could the guides be relevent to debian.

The machine is a Lenovo 3000 c200, 1.6 Celeron M, 512 Ram.

Thanks in advance

Michael.

Last edited by Michael_aust; 01-23-2007 at 04:11 PM.
 
Old 01-23-2007, 02:57 PM   #2
Michael_aust
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Registered: Aug 2005
Location: Lancashire (United Kingdom)
Distribution: Debian Etch, on 686 machine.
Posts: 509

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I have just done these commands and these are the outputs

cat /proc/acpi/thermal_zone/TZ00/temperature

44 C


cat /proc/acpi/thermal_zone/THRM/trip_points

Crir (S5) : 102 C

Passive 87 C : tc1 = 0 tc2 = 4 tsp = 4 devices = oxd6766bc

Now I have no iea what the trip points things mean, is it saying that the fans will only change speed once the temperature reaches 87 C?

How can II change these points so they come on and off appropriatly?
 
  


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