Last night I spent a couple hours fighting with this: https://bugs.launchpad.net/ubuntu/+source/lm-sensors/+bug/485899 The bug is five years old, and six other people took the time to log in and click that it affected them. But the pwmcontrol script was working fine, we were all just doing the wrong thing. After hours of adding echos to pwmcontrol to figure out what was going on, I realized the problem was here: Select fan output to configure, or other action: 1) hwmon0/device/pwm3 3) Change INTERVAL 5) Save and quit 2) hwmon0/device/pwm2 4) Just quit 6) Show configuration select (1-n): 5 None of the seven of us realized we still needed to hit "1" or "2" and do some more configuration. We thought it was all automatic, and we were done, and we just needed to save. So I'd suggest adding a line of text clearing that up. Maybe "You need to select a PWM control and finish configuring it." And maybe even throw an error or something if somebody tries to save the config without having done that, to avoid writing a config with all blank values. Also, the delays in pwmconfig weren't giving one of my fans enough time to adjust. Mostly because it slowed down (possibly stopped) right at the beginning, and then didn't have time to get up to full speed (I think in 2 seconds?). I think, in my case, it was worth changing both delays to 10 seconds: diff pwmconfig.0 pwmconfig 64c64 < DELAY=5 # 3 seconds delay is too short for large fans, thus I increased it to 5 --- > DELAY=10 # 3 seconds delay is too short for large fans, thus I increased it to 5 320c320,321 < PDELAY=2 --- > #PDELAY=2 > PDELAY=10 With the default delays, I get (with the fan that came with an AMD Phenom II X4 965): Would you like to generate a detailed correlation (y)? Would you like to generate a graphical plot using gnuplot (y)? PWM 255 FAN 2393 PWM 240 FAN 2800 PWM 225 FAN 3792 (probably incorrect) PWM 210 FAN 4354 (probably incorrect) PWM 195 FAN 4115 (probably incorrect) PWM 180 FAN 3947 (probably incorrect) PWM 165 FAN 3729 (probably incorrect) PWM 150 FAN 3534 (probably incorrect) PWM 135 FAN 3308 PWM 120 FAN 3125 ... With 10 second delays, I get: Would you like to generate a detailed correlation (y)? Would you like to generate a graphical plot using gnuplot (y)? PWM 255 FAN 4720 PWM 240 FAN 4560 PWM 225 FAN 4383 PWM 210 FAN 4192 PWM 195 FAN 3994 PWM 180 FAN 3813 PWM 165 FAN 3648 PWM 150 FAN 3479 PWM 135 FAN 3308 PWM 120 FAN 3110 ... _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
