Manpage is not consistent with actual behaviour

[Lars Volker]

The algorithm driving fan control is described in the manpage, including the following statement about the actual mapping from temperature to fan speed:

"Currently the speed increases quadratically with rising temperature."

However the following function seems to be used by the fancontrol shellscript:

 line 442: pwmval="(${tval}-${mint})*(${maxpwm}-${minso})/(${maxt}-${mint})+${minso}"

This however does look like a linear mapping, especially the (tval - min) / (max-min) part. Therefore I suggest to either correct the manpage or to change the way the value is calculated. Upstream says the manpages are not up-to-date (http://www.lm-sensors.org/wiki/Documentation).

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: fancontrol 1:3.1.2-2
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Thu May 6 14:32:47 2010
InstallationMedia: Xubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
PackageArchitecture: all
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: lm-sensors-3

[Charlie Kravetz (cjkgeek)]

Thank you for this report. Did you report this issue to upstream?
Do you have an upstream bug number?
Since upstream is responsible for these man pages, and have stated they are out of date, this is not really a bug that ubuntu can fix.

[Launchpad Janitor (janitor)]

[Expired for lm-sensors-3 (Ubuntu) because there has been no activity for 60 days.]