Re: [lm-sensors] sensor 3.3.1 and previous do not properly detect/show CPUTIN temperature - maximus

From: Guenter Roeck <guenter.roeck@ericsson.com>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] sensor 3.3.1 and previous do not properly detect/show CPUTIN temperature - maximus
Date: Sat, 14 Apr 2012 21:58:12 +0000	[thread overview]
Message-ID: <20120414215812.GA9319@ericsson.com> (raw)
In-Reply-To: <CAGqf2i+bMvvWyELKn5ApTL+XUQ_s7x-eMCSV4DdNGhpfuHy6nA@mail.gmail.com>

On Sat, Apr 14, 2012 at 09:09:59AM -0400, Martin Suchanek wrote:
> Hi,
> 
> I have found for long time ago that CPUTIN temperature is not showed correctly
> by sensors command:
> 
> coretemp-isa-0000
> Adapter: ISA adapter
> Physical id 0:  +34.0°C  (high = +80.0°C, crit = +98.0°C)
> Core 0:         +30.0°C  (high = +80.0°C, crit = +98.0°C)
> ...
> nct6776-isa-0290
> Adapter: ISA adapter
> ...
> CPUTIN:        -60.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = diode
> ...
> 
> I have cheked it in BIOS and in AI Suite in windows 7 64 bit and consulted it
> with ASUS technical support and everything is working properly.
> So , hardware is fine. Software in windows is fine. Only linux software is not
> correct.
> I have tried to detect-sensor many times and it is still the same.
> If there is some kind of tweak in config please let me know but it seems to me
> there is something wrong with lm-sensors 3.3.1.
> 
> ...
> Intel digital thermal sensor...                             Success!
>     (driver `coretemp')
> ...
> Found `Nuvoton NCT6776F Super IO Sensors'                   Success!
> ...
> Driver `w83627ehf':
>   * ISA bus, address 0x290
>     Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9)
> 
> Driver `coretemp':
>   * Chip `Intel digital thermal sensor' (confidence: 9)
> ...
> 
> my /etc/modules:
> ...
> coretemp
> w83627ehf
> ...
> 
> This error have appeared on maximus iv extreme motherboard Revision 3 , BIOS
> from 1404 to 3202 (latest)
> linux ubuntu natty -> oneiric 64 bit kernel from 2.6.39 up to 3.0.0-19
> commercial version (tested on 3.3.1 compiled by me)
> 
> Could you please help me to solve it ?
> 
CPUTIN with NCT6776F is kind of problematic. It shows up wrong on many (but not all) boards.
On some boards, the displayed temperature even decreases as the CPU temperature increases.
There may be some magic configuration setting which need to be fixed, but I have not been 
able to find out what those would be.

I have a new experimental driver for NCT6775F and NCT6776F at https://github.com/groeck/nct6775,
in case you want to give it a try. With this driver, it is possible to set the temperature sensor type
(1, 3, or 4). It doesn't help with my P8H67-V board for any of the possible settings, but maybe
you are more lucky.

Guenter

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