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SubjectRe: bad temperature values from w83781d in 2.6.22
Thanks for your reply.

the sensors.conf I'm currently using is provided by Tyan, so this seems
to be ok. One major difference that I can see: I don't have compute
statements for the CPU temperatures. If I use your config, I get 7.8°C
:-)

So there is definitely some difference in our hardware environment. OTOH
with the "right" compute statement the problem seems fixable.

BTW: there is another hwmon chip on the board, a w83627hf. Up to 2.6.21
this was managed by the w83781d driver, too. Now I use the w83627hf
driver (on the isa bus). No problem with that part.

-jo

On Sun, Aug 05, 2007 at 01:20:23PM +0200, Rene Herman wrote:
> On 08/05/2007 12:26 PM, Joerg Sommrey wrote:
>
> >after upgrading from 2.6.21 to 2.6.22 the CPU temperatures shown by
> >w83781d look unreal. They were in a range from 40°C when idle to
> >75°C under full load with 2.6.21. The values shown now are in a very
> >small range from 77°C to 82°C. From the (low) noise of the fan I can
> >tell that the temperature is <50°C.
> >The third temperature shown is completely wrong.
> >
> >I have a Tyan Tiger MPX board with a w83782d chip. Output from
> >"sensors":
> >
> >w83782d-i2c-0-2d
> >Adapter: SMBus AMD768 adapter at 80e0
>
> As a datapoint, the same W83782D on AMD756 (also I2C) works correctly with
> 2.6.22:
>
> w83782d-i2c-0-2d
> Adapter: SMBus AMD756 adapter at 50e0
>
> Jean Delvare recently worked on the ISA interface to these chips but it
> seems this would not be the cause if you are also using I2C. Our hardware
> appears rather identical...
>
> I've attached (an excerpt of) my /etc/sensors.conf -- I once dug through
> the datasheets for those compute lines for example so perhaps its still
> useful even if 2.6.21 working for you probably means you don't have a
> config problem.
>
> Rene.
>
-
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