I’ve got a Gigabyte ME03-PE0 motherboard and Noctua NF-A14 PWM + NFA15 PWM fans. I would like to run the fans @ 300 RPM @ idle but if I set the speed via the server management console the fans ramp up to 100% every couple of seconds even though the CPU temperature is <40°C. A known problem with low RPM fans on server motherboards.
Unfortunately the threshold are already low by default (Lower Non-Critical 300 RPM + Lower Critical 150 RPM) and even though the fans never drop below these thresholds they still ramp up to 100%. The only way to avoid that is to set the speed to ~750 RPM.
There are also no related events in the IPMI log. If I set the threshold to 1000 RPM I can see fan related events in the log.
I’ve also tried setting the thresholds via IPMItool without luck.
root@proxmox:~# ipmitool sensor list all
IANA PEN registry open failed: No such file or directory
Received a response with unexpected ID 0 vs. 1
Watchdog | 0x0 | discrete | 0x0080| na | na | na | na | na | na
SEL | 0x0 | discrete | 0x0080| na | na | na | na | na | na
CPU0_TEMP | 35.000 | degrees C | ok | na | na | na | 95.000 | 98.000 | na
CPU0_Status | 0x80 | discrete | 0x8080| na | na | na | na | na | na
DIMMG0_TEMP | 34.000 | degrees C | ok | na | na | na | 85.000 | 87.000 | na
DIMMG1_TEMP | 34.000 | degrees C | ok | na | na | na | 85.000 | 87.000 | na
M2_AMB_TEMP | 41.000 | degrees C | ok | na | na | na | 92.000 | 96.000 | na
HIC_TEMP_0 | 40.000 | degrees C | ok | na | na | na | 85.000 | 90.000 | na
HIC_TEMP_1 | 35.000 | degrees C | ok | na | na | na | 85.000 | 90.000 | na
HIC_TEMP_2 | 33.000 | degrees C | ok | na | na | na | 85.000 | 90.000 | na
HIC_TEMP_3 | 30.000 | degrees C | ok | na | na | na | 85.000 | 90.000 | na
HIC_TEMP_4 | 33.000 | degrees C | ok | na | na | na | 85.000 | 90.000 | na
CPU0_FAN | 750.000 | RPM | ok | na | 150.000 | 300.000 | na | na | na
SYS_FAN1 | na | RPM | na | na | 150.000 | 300.000 | na | na | na
SYS_FAN2 | na | RPM | na | na | 150.000 | 300.000 | na | na | na
SYS_FAN3 | na | RPM | na | na | 150.000 | 300.000 | na | na | na
SYS_FAN4 | 750.000 | RPM | ok | na | 150.000 | 300.000 | na | na | na
SYS_FAN5 | na | RPM | na | na | 150.000 | 300.000 | na | na | na
root@proxmox:~# ipmitool sensor thresh "CPU0_FAN" lower 100 200 300
IANA PEN registry open failed: No such file or directory
Locating sensor record 'CPU0_FAN'...
Setting sensor "CPU0_FAN" Lower Non-Recoverable threshold to 100.000
Error setting threshold: Command illegal for specified sensor or record type
Setting sensor "CPU0_FAN" Lower Critical threshold to 200.000
Setting sensor "CPU0_FAN" Lower Non-Critical threshold to 300.000
root@proxmox:~# ipmitool sensor thresh "SYS_FAN4" lower 100 200 300
IANA PEN registry open failed: No such file or directory
Received a response with unexpected ID 0 vs. 1
Locating sensor record 'SYS_FAN4'...
Setting sensor "SYS_FAN4" Lower Non-Recoverable threshold to 100.000
Error setting threshold: Command illegal for specified sensor or record type
Setting sensor "SYS_FAN4" Lower Critical threshold to 200.000
Setting sensor "SYS_FAN4" Lower Non-Critical threshold to 300.000
