Re: Thinkpad T61 - Fan running a lot of time

[Renato S. Yamane]

Henrique de Moraes Holschuh wrote:
> Renato S. Yamane wrote:
> > The fan speed is ~2600RPM (always under 3000RPM), and I think that is
> > not enough to cooling the processor, because is necessary 3min to
> > decrease 1°C in Core1 and only 40sec to increase 1°C.
> >
> > I think that is necessary a higher fan speed.
>
> Or a better thermal coupling between the fan assembly and the
> processor...  this is a weak area on thinkpads.
>
> If your box is still under warranty, I suggest you to use
> thinkpad-acpi fan control to keep your fan at level 7 (fastest normal
> fan level).  If that's not enough, call in for a motherboard
> replacement.

Updated BIOS to 7LETC5WW (2.25) and...

Fan speed is stabilished in ~3000RPM, temperature go to 42°C and fan 
speed still power-on.

# cat /proc/acpi/ibm/fan
status:         enabled
speed:          3028
level:          auto

# echo level 7 > /proc/acpi/ibm/fan
bash: echo: write error: Invalid argument

How can I change fan level?

Regards,
Renato
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