On 11/3/11 7:46 PM, Henrik Rydberg wrote: > On Thu, Nov 03, 2011 at 05:19:25PM +0200, 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. >> >>> 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. > > I am confused. > > From what I gather, the fans work, and it should be possible to run > the macfanctld daemon (not fancontrol) to tune the fans. On the note book, one fan works with manual control only. If there is a second fan, it cannot be turned on manually. On the mini, there are no fan devices listed in /sys/class/hwmon/hwmon0/device/ > If there really is a problem with the applesmc, following > http://ubuntuforums.org/showthread.php?t=924096 is a good idea. > > However, the root problem is most likely the GPU consuming too much > power. Depending on the exact laptop model, there may or may not be a > viable workaround. If you model is very new, there is most likely and > active thread about it on the ubuntu forums. Not that I've been able to find and an attempt at starting a new thread has no response. > After checking around on the forums, if you find that this is still a > fan or temperature sensor problem, and not a GPU problem, then please > restate the problem as exactly as you can. I think there are two problems. One is the GPU or some other part running hot. The other is the sensors/fans issue: the fans don't turn on even when the system is hot. Both problems are evident on two different models of hardware, the notebook is a MacBookPro8,2 and the desktop is a Macmini3,1. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593 /Lars _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
