[ltp] Noisy fan on T42

[Alejandro Bonilla]

Konstantin Filtschew wrote:

>hi,
>
>Linux doesn't control the fan, it's the ibm bios, which control the fan.
>We try only to reduce the temperature through bios, so the bios stops
>the fan, thats the problem. Controlling the fan is still not possible
>for T40 and later as far as I know.
>  
>
I can only say this is the same case for me. I have a T42 with the stock 
IBM bios and works perfectly. The only time I can hear the Fan is when 
the CPU THM is pretty hot. The BIOS notices it's so hot that it makes 
the Fan hit the CPU with all it has. (This happends when I use the PC 
plugged and in the bed, which used to put my CPU at 1800mhz and with few 
space for the air to leave the laptop casing) anyway. It works for me 
here. You should test it this way.

1. make sure the PC is running in powersaver which should be 600mhz, 
then use laptop_mode and make sure nothing gets heated up.
2. At this point , you _should not_ hear the fan working heavily.

If you do, notice on boot in what moment this is happening! Make sure it 
is not something you did in a previous attempt to get things working 
differently

>
>Greetz
>
>Konstantin
>
>
>
>On Mon, 14 Mar 2005 10:36:45 -0500
>"Alexandru D. Salcianu" <salcianu@MIT.EDU> wrote:
>
>  
>