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
