[lm-sensors] serious w83627ehf problem stopping cpu fan

[Helmut Grohne]

Hi,

thanks for your reply and your help!

> What motherboard it is? Asus A8V-E SE? Can you please send dsdt table here?

The mainboard is labeled A8V-E and the box it came in is labeled A8V-E SE.

> cd /tmp
> cat /proc/acpi/dsdt  >dsdt.bin
> iasl -d dsdt.bin

Unfortunately there is no /proc/acpi/dsdt on my system. Can you tell me
what is missing? A kernel option?

> If you go to BIOS, is Q-fan enabled? What is your settings there?

Yes I know that Q-fan is enabled. A (more hardware savvy) friend of mine
configured this. The target temperature is 40°C with a tolerance of 3°C.
A setting I do not understand is called "fan duty cycle" and is set to
11/16.

My fan used to spin between 3000 and 5000 rpm. However the system
somewhen[1] stopped doing so and now merely sits on about 3500 however
hot the cpu is. This is also bad, because I cannot run the system at
full speed with work for a longer time.

Helmut

[1] Kernels I used: 2.6.18, since March 2007 2.6.20.1, since January
    2.6.23.14. According to munin graphs the system stopped spinning
    higher than 4000 rpm around September.