On Wed, 2012-06-06 at 09:51 -0400, kernel@xxxxxxxxxxxxxx wrote: > Hello everyone, > > It seems the cpu temperature of the VIA EPIA ML6000EAG chip vt1211 > seems to be a bit off in > sensors version 3.1.2 with libsensors version 3.3.2. > > The CPU is a VIA Nehemiah with a passive cooling setup. > > All tests happend at approx. 20 degree celsius with no active cooling > inside the case. > > > Here is some hopefully relevant data: > > > /etc/sensors3.conf > snipped: > > chip "vt1211-*" > > label in5 "+3.3V" > > label temp2 "SIO Temp" > #compute temp1 (@*@*0.0046) - (@*0.088) - 0.748, (@*0.9686) + 65 > #compute temp1 (@ - 65) / 0.9686, (@ * 0.9686) + 65 > #kernel.org on C3 Ezra > compute temp1 (@ - 83.869) / 0.9528, (@ * 0.9528) +83.869 > > > > # sensors > vt1211-isa-6000 > Adapter: ISA adapter > in0: +1.95 V (min = +0.00 V, max = +2.63 V) > in1: +1.99 V (min = +0.00 V, max = +2.63 V) > in2: +1.03 V (min = +0.00 V, max = +2.63 V) > in3: +1.97 V (min = +0.00 V, max = +2.63 V) > in4: +2.12 V (min = +0.00 V, max = +2.63 V) > +3.3V: +3.33 V (min = +0.00 V, max = +4.18 V) > fan1: 0 RPM (min = 0 RPM, div = 2) > fan2: 0 RPM (min = 0 RPM, div = 2) > temp1: +34.8 C (high = +179.6 C, hyst = -88.0 C) > SIO Temp: +56.0 C (high = +204.0 C, hyst = +0.0 C) > cpu0_vid: +1.750 V > > this output is generated with the above compute value. > > the raw value for the temperature are as followed: > > # cat /sys/devices/platform/vt1211.24576/temp*_input > 117000 > 56000 > > this is with a cpu load of <5 percent. > > with approx. 100 % cpu load the temp1 value increases slightly to 121000. > > > I did try to find additional info for the modul , settings for the > sensors3.conf and came up with the 3 above mentioned compute values. > > As they seem to be for a different processor im not sure if those values > are correct for my system at all. > > > #cat /proc/cpuinfo > processor : 0 > vendor_id : CentaurHauls > cpu family : 6 > model : 9 > model name : VIA Nehemiah > stepping : 8 > cpu MHz : 666.644 > cache size : 64 KB > fdiv_bug : no > hlt_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme de pse tsc msr cx8 sep mtrr pge cmov pat mmx > fxsr sse rng rng_en ace ace_en > bogomips : 1333.28 > clflush size : 32 > cache_alignment : 32 > address sizes : 32 bits physical, 32 bits virtual > power management: > > please let me know if i can give additional information to help solving > this "problem". > The driver code says "temp1 is an intel thermal diode which is scaled in user space". That means the reading depends on the board (ie how the sensor is connected) and on the CPU type. So anything you can come up with is as "correct" as it can be. Best would be, if that is possible, to compare readings with values reported by the BIOS and try to get a match. temp1_hyst looks wrong, though. It should not be negative. I don't know the driver or the chip, and the data sheet is only available under NDA, so I can not verify it. What is its raw reading ? Thanks, Guenter _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
