From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Date: Mon, 17 May 2010 07:06:26 +0000 Subject: Re: [lm-sensors] No temperature output with k10temp for AMD II X3 Message-Id: <4BF0EAF2.80104@ladisch.de> List-Id: References: <4BE718BF.4080101@googlemail.com> In-Reply-To: <4BE718BF.4080101@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: lm-sensors@vger.kernel.org Jean Delvare wrote: > On Sun, 09 May 2010 22:19:11 +0200, Florian Schwade wrote: > > [florian@errorkiste ~]$ sensors > > k10temp-pci-00c3 > > Adapter: PCI adapter > > temp1: +21.0°C (high = +70.0°C) > > > > 21°C is impossible to be the correct temperature. The BIOS reports my > > CPU running at something like 36°. The temperature values returned by k10temp are relative; AMD says: | Tctl is the processor temperature control value, used by the platform to | control cooling systems. Tctl is a non-physical temperature on an | arbitrary scale measured in degrees. It does _not_ represent an actual | physical temperature like die or case temperature. Instead, it specifies | the processor temperature relative to the point at which the system must | supply the maximum cooling for the processor's specified maximum case | temperature and maximum thermal power dissipation. Apparently, on your CPU, the reported values are about 15 °C lower. lm-sensors currently does not indicate that values are not absolute. > Maybe the BIOS applies an arbitrary offset, AMD doesn't publish any method to derive this offset. > or they get the temperature from an external sensor connected to a > hardware monitoring device. This is usually the case, especially since most mainboards also have a bunch of other temperature sensors handled by the same hwmon device. Regards, Clemens _______________________________________________ lm-sensors mailing list lm-sensors@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/lm-sensors