On Sat, 26 Mar 2011, Toralf Förster wrote: > Beginning with kernel 2.6.38 (might be .37 too) I observed, that the fan > speed > is often much higher than before. I'm wonder why b/c the temperatures itself > seems to be not so high. With this alias : > > tfoerste@n22 ~ $ alias temp > alias temp='cat /proc/acpi/ibm/thermal /proc/acpi/ibm/fan | sed > '\''s/-128/./g'\''' > > I got within few seconds : > > tfoerste@n22 ~ $ temp > temperatures: 49 41 35 . 28 . 28 . 39 45 44 . . . . . > status: enabled > speed: 2931 > level: auto > > and : > > tfoerste@n22 ~ $ temp > temperatures: 49 42 35 . 28 . 28 . 39 45 44 . . . . . > status: enabled > speed: 1846 > level: auto > > Do I miss omething ?
Run thinkpad-acpi with fan_control=0 (i.e. disable fan control), and check if it gets back to normal. If it does, I will help you track down whatever in userspace is playing havok with your fan. What thinkpad is this? Looks like an IBM or early Lenovo one, when they still had thermal sensors (or didn't hide them, whatever)... ACPI should not be able to mess with the fan speed on those, unless it is done through thinkpad-acpi... -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
