Re: [gentoo-user] FAN-Speed readout/control ???

[Volker Armin Hemmann]

On Sunday 12 December 2010 15:28:26 meino.cramer@×××.de wrote:
> Volker Armin Hemmann <volkerarmin@××××××××××.com> [10-12-12 15:16]:
> > On Sunday 12 December 2010 14:57:26 meino.cramer@×××.de wrote:
> > > Volker Armin Hemmann <volkerarmin@××××××××××.com> [10-12-12 14:52]:
> > > > On Sunday 12 December 2010 14:06:33 meino.cramer@×××.de wrote:
> > > > > IT8721
> > > >
> > > > So look at the lm sensors site:
> > > >
> > > > http://www.lm-sensors.org/wiki/Devices
> > > >
> > > >  ITE    IT8721F, IT8758E    yes    it87    LPC    2.6.37 or
> > > >  standalone driver
> > > >
> > > > (2010-10-12) We have a datasheet for the IT8721F. Different from
> > > > previous
> > > > IT87xxF chips (12 mV ADC instead of 16 mV, amongst other.) Two
> > > > requests ( Jae Sammy,  Virgil Gheorghiu.) The IT8758E was
> > > > reported to have the same device ID, so hopefully they are
> > > > fully compatible. Support added by Jean Delvare, please test
> > > > the standalone driver and report.
> > > >
> > > > you could try this:
> > > > http://khali.linux-fr.org/devel/misc/it87/it87.c
> > > >
> > > > google. 2minutes. It really is that simple.
> > >
> > > Instead I backported the i87.c driver from the upcoming linux
> > > 2.36.7.rc5 itree into my linux-2.6.36.6 kernel.
> > >
> > > After recompiling i and a reboot it loads well but dmesg shows that
> > > there were conflicting ACPI areas then. The driver itsself suggests
> > > to
> > > use the atk0110-acpi driver instead the it87 one.
> > >
> > > So I will do that and give the BIOS the full control over the fans.
> >
> > I did the same and it is working really well... apart from an annoying
> > cpu-fan error at the boot, because the fan only start turning 1-2
> > minutes after turning the box on.
> >
> > k10temp-pci-00c3
> > Adapter: PCI adapter
> > temp1:       +38.1°C  (high = +70.0°C, crit = +90.0°C)
> >
> > atk0110-acpi-0
> > Adapter: ACPI interface
> > Vcore Voltage:       +1.00 V  (min =  +0.85 V, max =  +1.70 V)
> >
> >  +3.3 Voltage:       +3.39 V  (min =  +2.97 V, max =  +3.63 V)
> >  +5 Voltage:         +5.08 V  (min =  +4.50 V, max =  +5.50 V)
> >  +12 Voltage:       +12.52 V  (min = +10.20 V, max = +13.80 V)
> >
> > CPU FAN Speed:       565 RPM  (min =  600 RPM)
> > CHASSIS FAN Speed:  1171 RPM  (min =  600 RPM)
> > CHASSIS FAN 2 Speed: 698 RPM  (min =  600 RPM)
> > CPU Temperature:     +36.0°C  (high = +60.0°C, crit = +95.0°C)
> > MB Temperature:      +29.0°C  (high = +45.0°C, crit = +75.0°C)
>
> Hi Volker,
>
> THAT'S INTERESTING!!
>
> What motherboard do you use and may be you can mail me your kernel
> config in a personal mail ?

M4A79XTD EVO
config will come per pm.

> And: What exactly do you enable/disable in the BIOS of you board?

on: acc, c1e, usb, fan control (setting to optimal), ahci modus, on on 
keyboard/space bar, some other stuff. 
Off onboard sound, firewire, serial and all the other stuff I never use... oh and 
PNP OS, if I remember correctly.

>
> When I try to enable fan control via bios I got a warning and loud
> beeps from the BIOS *AND* the fan do not start...

yeah and if you ignore that it should start rotating after a short while. The 
starting volts at room temperature are too low, but as soon as the cpu heats 
up, the volts increase and the fan spins.

>
> But what is the reason for the ACPI area conflict???

that it87blabla can be accessed by acpi stuff but the it87 driver does not know 
about it - or something like that. Read about it a few month ago and forgot 
everything.