https://bugzilla.kernel.org/show_bug.cgi?id=19452
--- Comment #4 from Manuel Ullmann <[email protected]> 2010-10-09 20:01:38 --- Created an attachment (id=33002) --> (https://bugzilla.kernel.org/attachment.cgi?id=33002) output of "grep . /sys/devices/virtual/thermal/*/trip_point_?_temp" The trip-point temperatures are reduced by 5°C, if they are reached while the fan state of the lower trip-point is not active. So, if trip_point_2_temp (60C) is reached and I did manually deactivate the lower fan state, echo 0 > /sys/devices/virtual/thermal/cooling_device3/cur_state the trip-point-temperature will be reduced to 55°C. By manually deactivating the Fan-states, I can trigger the activation of cooling_device0 at exactly 85°C, which is not seen by .../thermal/*/cur_state. (see attachement) The deactivation of this fan state seems to depend on CPU load and temperature. There is no fixed temperature-value, where it will reproducable stop. Due to my test results, I would say, that the time amount between the interruption of kernel compiling and spinning down of the fan gets lesser, if the temperature is lower. It is between 18 and 2 seconds, where 18 seconds are the time amount after an immediate interruption, and 2 seconds after an interruption 78°C. When I suspend and wakeup, the trip-point-temps are restored to their origins. The Fan-states are correctly restored, forget this point in the initial comment. It seems, that after the suspend the trip-point-temperature for the above mentioned Fan-State is increased to ca. 87-89°C. Maybe it actually depends completely on CPU load, but the 85°C trip-point on the first activation wouldn´t be reproducable then. Very strange, however. I have manual fan control via sysfs unless - I switch off not the highest fan-state. - cooling_device0 is activated. I can´t control any fan states, which are associated with a higher trip-point-temp, than current temp. Therefore cooling_device0 will never be activated in a normal way (which could be seen in sysfs). On most wakeups, the fan spins up to state0, which is not seen by the system. This can be fixed by de- and reactivate the highest fan state. In rare cases the fan state is restored correctly. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
