All of lore.kernel.org
 help / color / mirror / Atom feed
From: Guenter Roeck <guenter.roeck@ericsson.com>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] IT8728 shows wrong CPU temperature
Date: Fri, 23 Mar 2012 08:14:56 +0000	[thread overview]
Message-ID: <20120323081456.GA28622@ericsson.com> (raw)
In-Reply-To: <SNT106-W616EA106142C05B93F28D5D3460@phx.gbl>

On Fri, Mar 23, 2012 at 04:00:35AM -0400, Tomas Johansson wrote:
> Hi!
> 
> I have a Gigabyte GA-P67A-UD5-B3 with a IT8728F, yesterday i upgraded to Linux
> 3.3 and tested the new IT87 module.
> As i will show below it shows wrong CPU temperature.
> 
> First:
> 
> temp1 shows system or motherboard if you want.
> temp2 shows ?, probably unused
> temp3 shows CPU but is 7-8 degrees wrong compared to BIOS (I know that temp3 is
> CPU because it is the only temp value that differ under load)
> 
> 
> BIOS at this moment in time showed:
> SYS 34 C
> CPU 32 C
> 
> 
> coretemp-isa-0000
> Adapter: ISA adapter
> Physical id 0:  +36.0 C  (high = +80.0 C, crit = +98.0 C)
> Core 0:         +36.0 C  (high = +80.0 C, crit = +98.0 C)
> Core 1:         +35.0 C  (high = +80.0 C, crit = +98.0 C)
> Core 2:         +33.0 C  (high = +80.0 C, crit = +98.0 C)
> Core 3:         +35.0 C  (high = +80.0 C, crit = +98.0 C)
> 
> it8728-isa-0290
> Adapter: ISA adapter
> in0:          +1.08 V  (min =  +0.00 V, max =  +3.06 V)
> in1:          +2.03 V  (min =  +0.00 V, max =  +3.06 V)
> in2:          +2.96 V  (min =  +0.00 V, max =  +3.06 V)
> in3:          +2.93 V  (min =  +0.00 V, max =  +3.06 V)
> in4:          +0.24 V  (min =  +0.00 V, max =  +0.84 V)
> in5:          +1.20 V  (min =  +0.00 V, max =  +3.06 V)
> in6:          +1.55 V  (min =  +0.00 V, max =  +3.06 V)
> 3VSB:         +3.38 V  (min =  +0.00 V, max =  +6.12 V)
> Vbat:         +3.26 V  
> fan1:        1056 RPM  (min =    0 RPM)
> fan2:           0 RPM  (min =    0 RPM)
> fan3:           0 RPM  (min =    0 RPM)
> fan4:           0 RPM  (min =    0 RPM)
> fan5:        1374 RPM  (min =    0 RPM)
> temp1:        +34.0 C  (low  = +127.0 C, high = +127.0 C)  sensor = thermistor
> temp2:        +31.0 C  (low  = +127.0 C, high = +127.0 C)  sensor = thermistor
> temp3:        +25.0 C  (low  = +127.0 C, high = +127.0 C)  sensor = thermistor
> intrusion0:  ALARM
> 
> 
> 
> Conclusion:
> 
> fan1, shows correct value.
> fan5, shows correct value.
> temp1 (system), shows correct value.
> temp3 (CPU), shows wrong value, in this case 25 C instead of 32 C.
> 
I am a bit lost here. Why do you assume that temp2 (which would show roughly
the correct temperature) is unused, and that temp3 is the CPU temperature ?
Why not temp2=CPU and temp3=??? 

What happens if you run something challenging on the system ?

Guenter

_______________________________________________
lm-sensors mailing list
lm-sensors@lm-sensors.org
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors

  parent reply	other threads:[~2012-03-23  8:14 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-23  8:00 [lm-sensors] IT8728 shows wrong CPU temperature Tomas Johansson
2012-03-23  8:14 ` Jean Delvare
2012-03-23  8:14 ` Guenter Roeck [this message]
2012-03-23  9:00 ` Tomas Johansson
2012-03-23  9:05 ` Jean Delvare
2012-03-23  9:38 ` Tomas Johansson
2012-03-23  9:59 ` Tomas Johansson
2012-03-23 12:41 ` Jean Delvare
2012-03-23 12:48 ` Jean Delvare
2012-03-23 13:34 ` Jean Delvare
2012-03-23 14:07 ` Tomas Johansson
2012-03-23 14:13 ` Jean Delvare
2012-03-23 15:18 ` Tomas Johansson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20120323081456.GA28622@ericsson.com \
    --to=guenter.roeck@ericsson.com \
    --cc=lm-sensors@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.