Hi Adam, On Sat, 16 Mar 2013 14:26:50 -0400, Adam Rosi-Kessel wrote: > On 3/16/2013 1:58 PM, Adam Rosi-Kessel wrote: > > fancontrol/pwmconfig work for CPU fans with acpi_enforce_resources=lax > > boot option, but I can't find any documentation as to how (if at all) to > > control CPu fan. There is also nothing applicable in BIOS (using latest > > release -- 2/24/09 1.0.18). > > Sorry -- typo above. It should say I can control *CPU* fans, but can't > find any documentation as to how to control the *chassis* fan. This is a rather common issue, many boards out there allow to control the CPU fan speed but not the other fan speeds. That being said, in some cases the problem is a 3-wire fan plugged into a 4-pin fan header. 4-pin headers have the fan speed control on the 4th pin, so a 3-wire fan will always run at full speed. Check if this is your case. On my motherboard, all fan headers have 4 pins, but there is a jumper to tell the board to treat the case fan headers as 3-pin. This is rather rare though, most motherboards have it hard-wired. -- Jean Delvare _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
