T 43 fan control daemon (No Such Weblog)

T 43 fan control daemon

As I mentioned earlier, one of the more annoying properties of the Thinkpad T43 is that its fan is running almost constantly, even whe the device is basically cold.

This daemon controls the fan: When a certain temperature is exceeded, the fan is turned on. When fan speed drops below a certain threshold, it's turned off. The daemon tries to be safe by turning on the fan when it is killed or otherwise encounters an error. If that doesn't happen, there's an emergency broadcast through syslog.

WARNING: Turning off the fan might lead to overheating of your machine. Use at your own risk. This daemon may have bugs that could lead to this situation.

Posted by Thomas Roessler on August 13, 2005 8:46 AM | Permalink

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Comments (2)

Sylwester:

hello. unfortunetly I did'n test this deamon yet, since I back to fan noise ocasionally, but if U will apply checking teperature of miniPCI and GPU then it will be more safe. smth I have ' # # miniPCI # temp=$(cat /proc/acpi/ibm/thermal | awk {'print $3'}) test $temp -gt $SWITCHTEMP && fan=yes # # GPU # temp=$(cat /proc/acpi/ibm/thermal | awk {'print $5'}) test $temp -gt $gpuSWITCHTEMP && fan=yes ' with different maxtemperature of gpu, miniPCI, processor. best

Posted by Sylwester | August 13, 2005 11:27 AM

Posted on August 13, 2005 11:27

Thomas Roessler:

What the daemon actually does is to go through *all* the values in /proc/acpi/ibm/thermal and take the highest temperature there.

Posted by Thomas Roessler | August 13, 2005 11:50 AM

Posted on August 13, 2005 11:50

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