We have a product based on the Intel E7501 chipset which uses two LM87 sensor chips and the i2c-i801 bus driver. We have fielded several hundred of these boxes over the past two years. They are all running Red Hat 9 with the version of sensors that came with it (the rpm version is 2.6.5-5). Yes, I know this an ancient release... I got a call yesterday that one of the boxes had started getting voltage alarms. After some investigation, I determined the problem was that the low voltage alarm threshold for the +V2.5 power plane had changed to 3.32V (from the normal value of 2.37V. The high voltage threshold had not changed for the normal setting of 2.61V. The measured voltage of 2.48V looked fine, too. After running sensors -s, the problem went away (as I expected it to). So I have a bunch of questions: 1 - is it likely that this problem would be fixed in a newer release of lm_sensors? 2 - if it's not fixed, how would one track down the problem so we could fix it? 3 - is it possible this is a hardware problem? 4 - Any thoughs on recovering from problem in a more automated fashion until a fix is found? Any thoughts are welcome. David
