Zero-configuration fan control daemon for ThinkPads.
- Extremely small (~250 lines), simple, and easy to understand code
- Sensible out of the box, configuration is optional (see "usage" below)
- Strong focus on stopping the fan as soon as safe to do so, without inducing throttling
- Automatic temperature- and time-based hysteresis: no bouncing between fan levels
- Watchdog support
- Minimal resource usage
- No dependencies
zcfan has the following default fan states:
| Config name | thinkpad_acpi fan level | Default trip temperature (C) |
|---|---|---|
| max_temp | 7 | 90 |
| med_temp | 4 | 80 |
| low_temp | 1 | 70 |
If no trip temperature is reached, the fan will be turned off.
To override these defaults, you can place a file at /etc/zcfan.conf with
updated trip temperatures in degrees celsius. As an example:
max_temp 85
med_temp 70
low_temp 55
We will only reduce the fan level again once:
- The temperature is now at least 10C below the trip point, and
- At least 3 seconds have elapsed since the initial trip.
This avoids unnecessary fluctuations in fan speed.
I write zcfan because I found thinkfan's configuration and code complexity too much for my tastes. Use whichever suits your needs.
Run make.
- Compile zcfan or install from the AUR package
- Load your thinkpad_acpi module with
fan_control=1- At runtime:
rmmod thinkpad_acpi && modprobe thinkpad_acpi fan_control=1 - By default:
echo options thinkpad_acpi fan_control=1 > /etc/modprobe.d/99-fancontrol.conf
- At runtime:
- Run
zcfanas root (or use thezcfansystemd service provided) Ps: Or you can simply run 'install.sh' script in order to automate installation process. Warning: For the changes to take effect, please reboot your system once installed
While the author uses this on their own machine, obviously there is no warranty whatsoever.