On Thu, Sep 19, 2013 at 10:00:46AM +0200, Sascha Haupt wrote: > Dear Guenter > > thank you for the quick answer. > > > We also had the idea to plug an multimeter between mass (black) and > the +12V wire (yellow). > The voltage was good at approx 12V. > > Finally, I figured out that ACPI returned an incorrect value to the > operating system. > > > Therefore, I did the following: > > Step 1: Get voltage values from the BIOS > > VCORE => 1.392 V > +3.3V => 3.304 V > +5V => 5.130 V > +12V => 12.105 V > > Step 2: Get the raw data from the sys-filesystem > > cat /sys/class/hwmon/hwmon1/in1_input > 3304 > cat /sys/class/hwmon/hwmon1/in2_input > 5130 > cat /sys/class/hwmon/hwmon1/in3_input > 10543 > > Step 3: Calculate values for sensors.conf > > 3304 / 3304 = 1.0 > 5130 / 5130 = 1.0 > 12105 / 10543 = 1.14816 > > So only 12V needs a correction. > > Step 4: Created file /etc/sensors.d/atk0110-acpi.conf > > chip "atk0110-acpi-*" > compute in3 @ * 1.14816, @ / 1.14816 > > > I am still unsure why other machines with the same mainboard provide > correct values. > If I find a free time slot, I will check if all boards have the same > BIOS version and settings. Probably not, which would also explain your fan speedd problem. Guenter > At the moment, the solution above is ok for me. > > > Thank you for your help. > > Best regards > Sascha > > > Zitat von Guenter Roeck <linux@xxxxxxxxxxxx>: > > >On Wed, Sep 18, 2013 at 11:01:56AM +0200, Sascha Haupt wrote: > >> > >>Dear @ll, > >> > >>I am monitoring multiple systems (with Asus M5A78LE mainboards) > >>using sensors and Munin. > >> > >>On one of the nodes, the +12 V value is constantly reported to be > >>+10.48 Volt which > >>causes Munin to report a warning (value outside 10.92 to 13.08 Volt range). > >>The value seems to be close to +12 V on all other nodes. > >> > >>One idea was that the system reduces voltage to save power. > >>Therefore I caused some load on the node: > >> > >>root:/home/root # md5sum /dev/urandom & > >>root:/home/root # md5sum /dev/urandom & > >>root:/home/root # md5sum /dev/urandom & > >>root:/home/root # md5sum /dev/urandom & > >> > >>What I can see is that the 1.4 V value is now constanly at 1.38 V. > >>Previously, it jumped between 1.01 V and 1.38 V. > > > >Makes sense, as the CPU voltage changes with load. > > > >>However, there is no difference in the +12 V value. > >> > >12V voltage does not usually change baed on power states. > > > >>I do not understand why the 12 V value stays at such an low voltage. > >> > >>May any power saving options cause that behaviour (when yes, which > >>settings can cause that)? > >>Do you have any ideas how I can localise the cause of the +10.48 Volt value? > >> > >Maybe there is a problem with that system ? Can you measure the > >voltage at the > >power supply ? That may even be related to the fan problem you > >reported earlier > >if that is on the same system, as the fans operate on 12V. > > > >Guenter > > > >>Thanks for your help. > >> > >>Best regards > >>Sascha Haupt > >> > >> > >> > >>_______________________________________________ > >>lm-sensors mailing list > >>lm-sensors@xxxxxxxxxxxxxx > >>http://lists.lm-sensors.org/mailman/listinfo/lm-sensors > >> > > > > _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
