Hi Earl, On Sun, 16 Jun 2013 22:22:00 -0600, earl middlebrook wrote: > I am running Ubuntu 12.04 on a lenovo l512 laptop. It has been running a > bit hot (to the touch) and since I run it full throttle quite often I > thought I should monitor the hardware more closely. I installed lm-sensors > from the Software Centre, ran sensors detect (only detected coretemp), > installed psensors and restarted. > > The first thing to note is that the temp rarely starts or idles below 60C. > The second, and most apparent, is that the fan speed indicated is obviously > erroneous. The coretemp driver only reports temperatures, not fan speed. So you must have another driver already loaded which reports the fan speed. On a Lenovo laptop it may be the thinkpad_acpi driver. Please show us the complete output of sensors so we get a better idea of which drivers are used and what they do report. Please also tell us what kernel version you are running. > It hovers around 790 when idling and when it is very hot (core > ~95C) it drops to 550. The fan is obviously spinning up a little, but > still not as fast as i would expect for a computer about to light itself on > fire. If you look at the temp and fan speed graph generated by Psensors, > there seems to be a strong negative correlation. This leads me to think > that at least the fan if not all the sensor outputs are off by some > factor. Please check in the BIOS if you can change settings related to thermal management or fan speed control. > If you have heard of this problem or know a fix let me know. I would be > happy to provide any more details. Although I dont know where the relevant > data is dumped. I had not heard of this before, but searching bugzilla.kernel.org for similar cases I found this report: https://bugzilla.kernel.org/show_bug.cgi?id=27792 The good news is that you're not alone. The bad news is that this bug report is getting old but the bug is still not fixed, apparently it's a difficult one. Henrique, as the maintainer of the thinkpad_acpi driver, is there anything you can do to help, or is the problem outside your jurisdiction? -- Jean Delvare _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
