Re: [lm-sensors] IT8721F fan control?

[Alexandros Diamantidis <adia@hellug.gr>]

* Luca Tettamanti [2010-11-08 13:53]:
> > atk0110-acpi-0
> > CPU Fan Speed:    675000 RPM  (min =  600 RPM)
> 
> There's something wrong with the reading of this fan. Can you send me
> a copy of the DSDT table (/sys/firmware/acpi/tables/DSDT)?

Oops, I hadn't noticed that!

In fact, that fan speed is usually read correctly, but intermittently
jumps to some absurd value. I don't think it's a problem of the driver,
since I see this in the BIOS "system info" screen as well. Here's an
example of the usual output:

atk0110-acpi-0
Adapter: ACPI interface
Vcore Voltage:     +1.27 V  (min =  +0.80 V, max =  +1.60 V)
+3.3V Voltage:     +3.29 V  (min =  +2.97 V, max =  +3.63 V)
+5V Voltage:       +4.93 V  (min =  +4.50 V, max =  +5.50 V)
+12V Voltage:     +12.00 V  (min = +10.20 V, max = +13.80 V)
CPU Fan Speed:    1562 RPM  (min =  600 RPM)
Chassis Fan Speed:   0 RPM  (min =  600 RPM)
Power Fan Speed:  1216 RPM  (min =  600 RPM)
CPU Temperature:   +42.0°C  (high = +60.0°C, crit = +95.0°C)  
MB Temperature:    +29.0°C  (high = +45.0°C, crit = +75.0°C)  

For the moment I've disconnected the chassis fan because it was very
distracting.

If it's of any interest, I've put a copy of the DSDT table here:
http://users.uoa.gr/~adia/DSDT

Thanks!

Alexandros

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