Hello, It seems that it needs a loooong time before a fan speed of >2800/min is lowered to ~1900/min : tfoerste@n22 ~ $ temp Mon May 16 15:30:30 CEST 2011 temperatures: 52 42 35 . 31 . 29 . 40 45 45 . . . . . status: enabled speed: 1909 level: auto tfoerste@n22 ~ $ temp Mon May 16 15:30:37 CEST 2011 temperatures: 53 42 35 . 31 . 29 . 40 45 45 . . . . . status: enabled speed: 2835 level: auto tfoerste@n22 ~ $ temp Mon May 16 15:30:56 CEST 2011 temperatures: 51 42 35 . 31 . 29 . 40 45 45 . . . . . status: enabled speed: 2835 level: auto Henrique de Moraes Holschuh wrote at 12:39:19 > Please load the driver like this: > > modprobe thinkpad-acpi debug=0x8010 fan_control=1 This doesn't gave any useful information within /var/log/messages, the fan speed seems to be fully vontroled by the ekrnel itself. -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel