[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#641429: /usr/bin/sensors: sensors report the wrong cpu temperature on intel atom 330



On Thu, 2011-09-15 at 06:28 +0200, Aurelien Jarno wrote:
> reassign 641429 linux-2.6
> thanks
> 
> On Wed, Sep 14, 2011 at 09:19:06AM +0100, Richard Kennedy wrote:
> > On Wed, 2011-09-14 at 00:50 +0200, Aurelien Jarno wrote:
> > > On Tue, Sep 13, 2011 at 02:22:49PM +0100, Richard Kennedy wrote:
> > > > On Tue, 2011-09-13 at 15:15 +0200, Aurelien Jarno wrote:
> > > > > Le 13/09/2011 14:03, richard kennedy a écrit :
> > > > > > Package: lm-sensors
> > > > > > Version: 1:3.1.2-6
> > > > > > Severity: normal
> > > > > > File: /usr/bin/sensors
> > > > > > 
> > > > > > on my intel atom 330 system sensors always reports the cpu temp as +1.0 C, and it never changes.
> > > > > > This problem only occurred when I upgraded to squeeze, on the previous stable version the temps
> > > > > >  reported correctly.
> > > > > > 
> > > > > > I'm not sure if this is a kernel isssue or just sensors. 
> > > > > 
> > > > > It's likely to be a kernel issue, but please provide me the output of
> > > > > the sensors command to confirm.
> > > > > 
> > > > Hi,
> > > > here it is, 
> > > > ----
> > > > sensors
> > > > coretemp-isa-0000
> > > > Adapter: ISA adapter
> > > > Core 0:       +1.0°C  (crit = +90.0°C)                  
> > > > 
> > > > coretemp-isa-0001
> > > > Adapter: ISA adapter
> > > > Core 1:       +1.0°C  (crit = +90.0°C) 
> > > > -----
> > > 
> > > Can you please also send me the output of 
> > >   cat /sys/devices/platform/coretemp.0/temp1_input
> > > and
> > >   cat /sys/devices/platform/coretemp.1/temp1_input
> > > ?
> > > 
> > 
> > I've just had a fan fail on that machine and the values reported by
> > sensors have changed. But as room temp is about 20 degrees there's no
> > way this can be correct!.
> > 
> > -----
> > cube:~$ cat /sys/devices/platform/coretemp.0/temp1_input 
> > 7000
> > cube:~$ cat /sys/devices/platform/coretemp.1/temp1_input 
> > 9000
> > cube:~$ sensors
> > coretemp-isa-0000
> > Adapter: ISA adapter
> > Core 0:       +7.0°C  (crit = +90.0°C)                  
> > 
> > coretemp-isa-0001
> > Adapter: ISA adapter
> > Core 1:       +9.0°C  (crit = +90.0°C)
> 
> Thanks for these informations. It looks like Tjmax is not correctly 
> detected for you CPU, so all temperatures are offset by a value.
> 
> It's definitely a kernel issue, so I am reassigning this bug.
> 

Thank you for looking in to this.
Here's the relevant bits of /proc/cpuinfo, just in case someone needs
this.

cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Intel(R) Atom(TM) CPU  330   @ 1.60GHz
stepping        : 2
cpu MHz         : 1596.004
cache size      : 512 KB

regards
Richard




Reply to: