> Hi Jean, > > Am willing to keep trying something. This machine is one of 16 > identical machines in a cluster, so it is worth that little more > effort. > > Output before loading i2c driver: > isadump 0xC05 0xC06 1 > (...) Nothing especially relevant here. I found a report for the same Tyan board you are using here: http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=1711 The guy obviously has the same problem as you have. Read my comments at the very bottom for hints about the voltage inputs. I am out of ideas as far as investigation is concerned. Our only hope is with Tyan. Since you own a significant number of these boards, I think that they owe you some support, don't you think? Please contact them, expose your problem, and ask them for a sample lm_sensors configuration file for this board. Since they were able to produce a sample output, they must have had a configuration file back then. Sorry that I cannot do much more myself. -- Jean Delvare http://khali.linux-fr.org/