[lm-sensors] I switched from AMD XP TB to AMD Mobile Barton

[lm-sensors] I switched from AMD XP TB to AMD Mobile Barton

[Filip Tsachev]

Hello,

I switched from AMD XP TB to AMD Mobile Barton on a GB 7n400e-l (it8217) and
now CPU temp reading has gone to -74*C from the previous +45*C readings. In
bios temp readings are just it's fine.. right now it looks as a diode
(meaning auto selected by sensors) but if I change it to thermistor (which I
doubt is the type in this MB) it just changes to +74*C or something similar,
please tell me how to reset all-together sensors data about the
diode/thermistor settings or to pastebin my config? there is no offset for
cputemp in bios. Many thanks in advance!
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[lm-sensors] I switched from AMD XP TB to AMD Mobile Barton

[Filip Tsachev]

Hello,

if I use the set sensor 2 - I get:

Temp 3:      +74??C  (low  =   +35??C, high =   +55??C)   sensor thermistor

If I use type 3 - I get:

Temp 3:      -79??C  (low  =   +35??C, high =   +55??C)   sensor = diode

I have no compute temp 3 line, if I try the suggested (for some other board
in the conf file) -15.096+1.4893*@), (@+15.096)/1.4893

It's going down to:

 -134??C (diode)

If I try the following formula: compute temp3 (@+128)/3, (3*@-128)

I get +16*C

The CPU temp should be around 45-55*C.. please guys help me out here, what
could be done?

On 24/01/06, Rudolf Marek <r.marek at sh.cvut.cz> wrote:

> > I switched from AMD XP TB to AMD Mobile Barton on a GB 7n400e-l (it8217)
> > and now CPU temp reading has gone to -74*C from the previous +45*C
> > readings. In bios temp readings are just it's fine.. right now it looks
> > as a diode (meaning auto selected by sensors) but if I change it to
> > thermistor (which I doubt is the type in this MB) it just changes to
> > +74*C or something similar, please tell me how to reset all-together
> > sensors data about the diode/thermistor settings or to pastebin my
> > config? there is no offset for cputemp in bios. Many thanks in advance!
>
> Hmm thats really strange. Maybe the temp reading are inverted for some
> reason?
>
> Please have a look to propper /etc/sensors.conf section
> (look for:  compute temp1     (-15.096+1.4893*@), (@+15.096)/1.4893 ) or
> similar)
>
> Maybe other people round can have some idea?
>
> Regards,
> Rudolf
>



--
Cheers,
Filip
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[lm-sensors] I switched from AMD XP TB to AMD Mobile Barton

[Filip Tsachev]

As I ran prime95 torture the "watch sensors" made me notice that CPU
temp is going from -70 to -65, could you please elaborate on reverting
the readings? It would be really nice then I could make some offset
like -20*C and it should become very accurate...


Maybe it is possible to be BIOS fault?? since it's recognized as:
cat /proc/cpuinfo
model name      : Unknown CPU Typ

p.s. I also could find only about A64 some type of diode offset but no
info for XP-Ms..

2006/2/24, Rudolf Marek <r.marek at sh.cvut.cz>:
> > The CPU temp should be around 45-55*C.. please guys help me out here,
> > what could be done?
>
> I think that the mobile barton has somewhere a diode offset register. I failed to find
> a datasheet for it so bad luck. I would suggest to google for "thermal offset" or diode
> offset and with conjuction of mobile barton
>
> I hope it helps,
>
> Regards
> Rudolf
>

--
Cheers,
Filip

[lm-sensors] I switched from AMD XP TB to AMD Mobile Barton

[Rudolf Marek]

Filip Tsachev wrote:
> As I ran prime95 torture the "watch sensors" made me notice that CPU
> temp is going from -70 to -65, could you please elaborate on reverting
> the readings? It would be really nice then I could make some offset
> like -20*C and it should become very accurate...


Well you can use the compute lines in /etc/sensors.conf to do that.

> Maybe it is possible to be BIOS fault?? since it's recognized as:
> cat /proc/cpuinfo
> model name      : Unknown CPU Typ
> 
> p.s. I also could find only about A64 some type of diode offset but no
> info for XP-Ms..

Well also bad luck for me. I just found some screenshots of some program mentioning the offset of diode
on bartons CPU (no datasheet was found on the AMD website). I'm sorry I can help more maybe you can
try to create the compute line for temp and put it into the sensors.conf (run sensors -s to apply the changes)

Regards
Rudolf