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Message-ID: <49C98280.4020402@diamondcut.com.br> Date: Tue, 24 Mar 2009 22:01:52 -0300 From: "Renato S. Yamane" <yamane@...mondcut.com.br> To: Henrique de Moraes Holschuh <hmh@....eng.br> CC: LKML <linux-kernel@...r.kernel.org>, jnelson@...poni.net Subject: Re: Thinkpad T61 - Fan running a lot of time 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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