, 7=max)Ĭhanging modes may not be immediate on all ThinkPads. It shares the same control register as the main fan (cannot be controlled separately), and exposes a second tachometer.ĪCPI DSDT register HFSP (8 bits, offset 0x2F in the EmbeddedController address space, accessed through the standard EC interface at IO ports 0圆2 and 0圆6) is read/writable and has the following meaning:Ġ 0 N N N N N N - manual (0.63 0=disable fan, 1=min. The ThinkPad X61s and X61 with WWAN have a second system fan. Now you'll be able to use this program easily. You must add 'fan_control=1' as a module parameter to 'thinkpad-acpi'.įor example, in Debian Lenny (and Ubuntu 8.04), you must add the following You must also enable manual control for your fans. You are required to have the Linux kernel with 'thinkpad-acpi' patch. This program is written in C, using GTK GUI. This is program for controlling fans speed on IBM/Lenovo ThinkPads. Packages are available for debian based linux systems.Ī GTK GUI program (packaged for Ubuntu 7.10 and 8.04) may also help.Īutomated program - Simple ThinkPad Fan Control There is an distro independent daemon ( ), written in python. For the default behavior, simply save tp-fancontrol ( download) as tp-fancontrol, make sure you've loaded thinkpad-acpi with the "fan_control=1" parameter, and run: It monitors the laptop's thermal sensors and sets the fan speed accordingly, according to customizable thresholds. # echo level disengaged | sudo tee /proc/acpi/ibm/fan (disengaged)Īn ACPI fan control script can be used to override the firmware's fan algorithm with gentler, quieter version. # echo level auto | sudo tee /proc/acpi/ibm/fan (automatic - default) # echo level 7 | sudo tee /proc/acpi/ibm/fan (maximum speed) # echo level 4 | sudo tee /proc/acpi/ibm/fan (medium speed) # echo level 2 | sudo tee /proc/acpi/ibm/fan (low speed) # echo level 0 | sudo tee /proc/acpi/ibm/fan (fan off) If you receive a PERMISSION DENIED error you can use the following command syntax instead as a work-around: # echo level disengaged > /proc/acpi/ibm/fan (disengaged) # echo level auto > /proc/acpi/ibm/fan (automatic - default) # echo level 7 > /proc/acpi/ibm/fan (maximum speed) # echo level 4 > /proc/acpi/ibm/fan (medium speed) # echo level 2 > /proc/acpi/ibm/fan (low speed) # echo level 0 > /proc/acpi/ibm/fan (fan off) Having done so, reboot and you can use the following commands to control fan speed: To enable fan control, the module parameter fan_control=1 must be given to thinkpad-acpi.įor example, in Ubuntu 8.04 (Hardy Heron), add the following to /etc/modprobe.d/options: options thinkpad_acpi fan_control=1įor Debian Squeeze (testing) create /etc/modprobe.d/thinkpad_nf with: options thinkpad_acpi fan_control=1 and install the package thinkfan When reinstalling Windows, try the Lenovo disc images, as longer battery times have been reported, probably due to custom drivers.Fan control operations are disabled by default for safety reasons. A can of compressed air may be useful too, and a bottle of isopropyl alcohol and cotton buds are good for cleaning, but not on the screen. The only tools you need for servicing a ThinkPad are a set of small screwdrivers and a nylon spudger (for taking the screen and keyboard bezels off), and possibly a pair of tweezers. Corporate bulk purchasers don't usually go for it. Not only will it have better brightness, colour, contrast and viewing angles - you will most probably more than make up the investment when selling it. When buying a new ThinkPad, consider taking the IPS screen option if possible, as it doesn't cost much. When buying a used ThinkPad, remember to check that the BIOS is not locked with a supervisor's password and that Computrace is not enabled and activated. For IBM/Lenovo ThinkPad laptop enthusiasts.
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