Hey Everyone,
So the internet is littered with people discussing the problem where SuperMicro boards will oscillate between running your fans at "full" and "optimal." The issue is that low-RPM fans trigger an alert and cause the board to go into FULL fan mode until it realizes temps are okay, and then it goes back to normal, which slows the fans below the limit again, over and over.
I've read all the guides about using ipmitool to lower the sensor thresholds and I was able to do this (I recommend booting to PLD Linux Rescue Live CD over IPMI, which is tiny and comes with ipmitool) but that didn't seem to help. I was still seeing fan assertions in the event log and the speed oscillation. I then lowered the threshold all the way to 0 (for all 3 thresholds) and I'm still getting the issue.
Has anyone successfully fixed their SuperMicro board to work with low-RPM fans, and if so, did you have to do anything else?
So the internet is littered with people discussing the problem where SuperMicro boards will oscillate between running your fans at "full" and "optimal." The issue is that low-RPM fans trigger an alert and cause the board to go into FULL fan mode until it realizes temps are okay, and then it goes back to normal, which slows the fans below the limit again, over and over.
I've read all the guides about using ipmitool to lower the sensor thresholds and I was able to do this (I recommend booting to PLD Linux Rescue Live CD over IPMI, which is tiny and comes with ipmitool) but that didn't seem to help. I was still seeing fan assertions in the event log and the speed oscillation. I then lowered the threshold all the way to 0 (for all 3 thresholds) and I'm still getting the issue.
Has anyone successfully fixed their SuperMicro board to work with low-RPM fans, and if so, did you have to do anything else?