(Sent to the list without subscribing.) For a long time I have been running an H8DC8 motherboard with the adm1026 module loaded, but no corresponding sensors.conf. Revisited this issue a couple of days ago and found an h8dc8 sensors.conf on the lm_sensors site. Loaded it, it seemed to work, and it appeared that everything was fine. But it wasn't. The BIOS is set to fan control mode "2" = "server mode". The motherboard adjusts the speed of the 4 system fans to keep the system cool. With just adm1026 loaded they mostly hover around 5100 RPM, with a bit of noise but no obvious oscillation (see below). Visited the machine room today for the first time since this change and heard an odd noise, with a 7 second cycle. It turned out to be the H8DC8 system's fans cycling up and down between 5700RPM and 6300RPM. Reloading the original sensors.conf did not resolve the problem, but rebooting did, and afterwords loading the modules but not the sensors.conf put things back as they were before. lm_sensors 2.10.5 These are the modules which are loaded: MODULE_0=i2c-isa MODULE_1=adm1026 MODULE_2=k8temp and this is the problematic sensors.conf file (just the active lines): chip "adm1026-i2c-*-2c" label fan0 "FAN0" label fan1 "FAN1" label fan2 "FAN2" label fan3 "FAN3" label fan4 "FAN4" label fan5 "FAN5" label fan6 "FAN6" label fan7 "FAN7" set fan0_div 8 set fan1_div 8 set fan2_div 8 set fan3_div 8 set fan4_div 8 set fan5_div 8 set fan6_div 8 set fan7_div 8 label in0 "+5VSB" compute in0 @*2,@/2 set in0_min 5*0.90 set in0_max 5*1.1 ignore in1 label in2 "+1.5V" set in2_min 1.5*0.95 set in2_max 1.5*1.05 label in3 "DIMM" set in3_min 2.5*0.95 set in3_max 2.5*1.05 ignore in4 ignore in5 ignore in6 label in7 "VCore2" set in7_min 1.35*0.95 set in7_max 1.35*1.05 ignore in8 ignore in9 label in10 "BatV" set in10_min 3*0.95 set in10_max 3*1.05 label in11 "3.3VSTDBY" set in11_min 3.3*0.95 set in11_max 3.3*1.05 label in12 "3.3V Main" set in12_min 3.3*0.95 set in12_max 3.3*1.05 label in13 "+5V" set in13_min 5*0.95 set in13_max 5*1.05 label in14 "VCore1" set in14_min 1.35*0.95 set in14_max 1.35*1.05 label in15 "+12V" set in15_min 12*0.95 set in15_max 12*1.05 label in16 "-12V" set in16_max -12*0.95 set in16_min -12*1.05 label temp1 "SysTemp" set temp1_min 18 set temp1_max 40 label temp2 "CPU1Temp" set temp2_min 20 set temp2_max 45 label temp3 "CPU2Temp" set temp3_min 20 set temp3_max 45 My best guess is that the fan divisor set is the problem, but since this is my main file server I really don't want to experiment. With just the module loaded the system fans read either 5113 or 5273, and that is noise, not the BIOS adjusting them. That probably says something about the default divisor, but I'm not sure what. Regards, David Mathog mathog@xxxxxxxxxxx Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
