Sam 2012-06-09 klockan 23:30 -0700 skrev Guenter Roeck: > On Sat, Jun 09, 2012 at 02:35:18PM -0400, Torbjörn Österdahl wrote: > > I have got a Asus P8Z77-M PRO and have similar experiences. > > > > - The standard lm-sensors package that comes with my distribution, (i:3.3.1/ > > Ubuntu), does not include support for setting PWM fan speeds. > > - By downloading and compiling the nct6775 module from https://github.com/ > > groeck/nct6775 these things work to statisfaction. > > - Temperatures as read from the chipset is low. Compared to temperatures > > measured by a thermometer in the case they are lower and does not go up as > > quickly when they system load increases. I.e. my idle system have a chipset > > temperature of 28 Degrees - they temperature in the case is meassured to 32. > > The loaded system reports a chipset temperature of 32 but the thermometer in > > the case reports 44! > > - Case temperature as read from the acpiz module are identical though. > > I can't really comment on that. No idea how accurate the sensors are. > Some of the sensors (eg the CPU sensor if measured through PECI) are extremely > inaccurate at low temperatures. > > > - hysteresis values, i.e. pwm3_auto_point1_temp_hyst, behave strange. It is > > depenant on the corresponding temp field and often takes negative values. > > The hysteresis should show a constant difference to the matching temperature, > and is displayed as absolute temperature. > > For example, assume pwm3_auto_point1_temp_hyst is set to 20000 and pwm3_auto_point1_temp > is set to 60000. If you change pwm3_auto_point1_temp to 30000, pwm3_auto_point1_temp_hyst > should change to -10000. Is that what you see ? Yes. It reflects my observations. My expectation was that I should set the 'hysteresis' to determine how sensitive the circuit reacted to deviations from the target temperature. Now it appears that it does not matter if I set it or not, though. > > > - In Thermal Cruise mode it sometimes stops the fan completely which I consider > > unnecessary. I was not able to prevent this. > > pwmX_stop_output is the lowest pwm value. It is only used if pwmX_stop_output_enable > is set, otherwise the output drops to 0. Can you try this ? Yes. That works. Perfect. > Thanks, > Guenter Another oddity is that sometimes(!?) I am not able to set values using sudo, i.e. 'sudo echo "1" > /sys/class/hwmon/hwmon2/device/pwm3_stop_output_enable'. It does not matter if I use 'sys/devices/platform' or '/sys/class/hwmon/hwmon2/' I often need to change to a root console first. Since I have not set any root password I am using 'sudo -i' which works nicely. _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
