Upgraded to FC14 from FC12 - system fan blows full speed constantly

[luminarycrush]

I upgraded from FC12 to FC14 and now the system/case fan blows full speed constantly. I also moved from i386-PAE to am64.

The CPUs are cool, the machine is basically idle, and the fan noise is really annoying (and blowing cool air).

In FC12 the fan would auto-adjust with CPU load. This is not the case now.

I ran sensors-detect and it doesn't seem to find my fans:

[root@pangea modprobe.d]# sensors

acpitz-virtual-0
Adapter: Virtual device
temp1: +40.0°C (crit = +75.0°C)

k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp: +38.0°C
Core1 Temp: +41.0°C

max1617a-i2c-1-4e
Adapter: SMBus nForce2 adapter at f400
temp1: +42.0°C (low = +0.0°C, high = +55.0°C)
temp2: +36.0°C (low = +0.0°C, high = +55.0°C)


I don't remember ever having to even run sensors-detect in FC12. I searched the board for a bit and didn't see any solutions. Any thoughts? I'll attach the full output from sensors-detect.

[JamesNZ]

If you haven't already done so, check your BIOS. If the BIOS settings for fan speed/CPU temperature seem ok then it's likely to be a hardware bug. However, as your system is not recognizing the fans perhaps you are missing some hardware drivers, such as the chipset drivers?

[luminarycrush]

This is not a new system, just a new OS version. On the same system, unchanged from a hardware or BIOS perspective, the fans auto-adjusted speed based on CPU load, and the temperatures are fine in the BIOS and as reported by sensors. The fan blows cool air out of the case - this was not always the case in the past, as the fans would downspeed for lighter load.

The motherboard is an Nvidia Nforce 590 SLI - it's not a new piece of hardware. So, this could be a regression bug?