On Thu, 2011-11-03 at 11:19 -0400, Lars Noodén wrote: > On 11/03/2011 05:06 PM, Guenter Roeck wrote: > > On Thu, 2011-11-03 at 10:25 -0400, Lars Noodén wrote: > [snip] > >> The one machine reports one fan and the other two fans. I haven't found > >> a way to set the fan speed manually. The output from sensors > >> is > >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593/comments/44 > >> and here > >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593/comments/47 > > > > Do the fans actually turn, or is the output bogus ? > > The output is bogus, the fans are not turning. On #47 there above, I > think the temperatures might be inaccurate, too. Since they'll go up > and down as much as 8 degrees in a few seconds. > Maybe 2000 really reflects 0. Not sure about the temperatures - I think especially the CPU temperature can change pretty fast. Or maybe the sensors are just not very accurate. > > You should be able to set the fan speed by writing into the fanX_input > > and/or fanX_output sysfs attributes. You find those > > in /sys/class/hwmon/hwmon0/device (assuming there is only one hwmon > > device). > > I can set the fan speed manually. e.g.: > > echo 3500 > /sys/class/hwmon/hwmon0/device/fan1_output > > That helps some. > If you can do that, you should be able to set up fancontrol to automatically control fan speed based on system temperatures. There is another sysfs attribute - fanX_manual. I don't find driver documentation, so I have no idea what it is doing. The name indicates that it might set manual vs. automatic fan control. What is it set to in your system ? From the code, looks like it should be 0 or 1. Try to toggle it and see what happens - after all, it can not get worse ;). Guenter _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
