2010/6/10 Jean Delvare <khali@xxxxxxxxxxxx>: > Hi Roman, > > On Wed, 2 Jun 2010 20:57:15 +0400, Roman Evstifeev wrote: >> Hi. I have Mainboard* with F71889FG-based controller. >> * - MSI P41T-C31 ( >> http://www.msi.com/index.php?func=proddesc&maincat_no=1&prod_no=1792 ) >> >> After f71882fg module loaded - it creates bunch of the sysfs entries, and i >> can succesfully read temperature and fan speed values from it. But i can't >> control the pwm with it. >> I tried pwmconfig utility as well as writing to sysfs files directly. sysfs >> values get changed, but actual fan speed does not. >> (...) > > Does the vendor advertise any form of fan speed (or noise) control on > this board? In the manual or in the BIOS? The PWM outputs of your chip > may simply not be wired on your board. In BIOS there is "CPU Smart Fan Target" option, which allows to choose desired temperature of CPU, i believe. But it should work only if 4-pin cooler connected to the CPU_Fan on mainboard. MB seems to not allow to change voltage of 3-pin Fan, connected to this 4-pin slot by any means (nor via BIOS nor manually via sysfs) > It's not listed in SpeedFan's > database as being fan-control-capable: > http://www.almico.com/forummotherboards.php?man=269 I think this list if far from completeness... my prevoius mainboard, which is capable of fan control (MSI 965-Neo-F v2) is not listed there too. > > So unless you have a good reason to believe that fan control should > work on your board, I am inclined to believe this is a hardware > limitation and not a driver bug. > >> **************** trying manual control ************ >> linux-md9k:/sys/class/hwmon # cat hwmon2/device/pwm3_enable >> 1 >> linux-md9k:/sys/class/hwmon # cat hwmon2/device/pwm3 >> 255 >> linux-md9k:/sys/class/hwmon # echo 140 > hwmon2/device/pwm3 >> linux-md9k:/sys/class/hwmon # echo 0 > hwmon2/device/pwm3 >> linux-md9k:/sys/class/hwmon # cat hwmon2/device/pwm3 >> 0 >> ********************************************************* > > Have you tried pwm1 and pwm2? On many boards, only one fan can be > controlled, so only one PWM output is working. > > You should try our "pwmconfig" script to automatically test all PWM > outputs. Yes, i tried other pwms, when all the fans are connected. Manually and with pwmconfig - no result. It seems that the only way to control fan speed is via BIOS with 4-pin CPU-cooler... Anyways thanks for your help. > -- > Jean Delvare > http://khali.linux-fr.org/wishlist.html > _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
