[lm-sensors] k8temp, BE-2350 CPU

[Jean Delvare]

Hi Alistair,

On Mon, 8 Oct 2007 00:53:25 +0100, Alistair John Strachan wrote:
> On Thursday 09 August 2007 07:38:29 Alistair John Strachan wrote:
> > On Thursday 09 August 2007 06:53:23 Rudolf Marek wrote:
> > > Hi,
> > >
> > > Sorry for the delay. I'm CCing the list too please do too.
> > >
> > > Alistair John Strachan wrote:
> > > > Hi,
> > > >
> > > > I've noticed a problem with the k8temp driver on a new BE-2350
> > > > processor. It seems the sensors report bogus values on this CPU. This
> > > > is when it is idling:
> > > >
> > > > root at joyeuse:~# cat /sys/bus/pci/drivers/k8temp/0000\:00\:18.3/temp*
> > > > -5000
> > > > -5000
> > > > -3000
> > > > 1000
> > > >
> > > > And this is under load:
> > > >
> > > > root at joyeuse:~# cat /sys/bus/pci/drivers/k8temp/0000\:00\:18.3/temp*
> > > > 7000
> > > > 12000
> > > > 11000
> > > > 17000
> > > >
> > > > This is a socket AM2 processor. Any idea what's wrong? Using kernel
> > > > 2.6.23-rc1, but it's also broken on Debian's 2.6.22.
> > >
> > > Hmm perhaps the formula does not work anymore :/ Can you send me output
> > > of cat /proc/cpuinfo?
> 
> Sorry to nag, Rudolf, but has there been any progress on this issue?

My understanding is that some K8 CPU series simply have broken thermal
sensors and there's not much we can do about it. In some cases you may
try applying arbitrary offsets to get somewhat realistic (yet
incorrect) values, in others even that won't work.

Maybe we will have to blacklist some CPU series from the k8temp driver
to avoid the confusion.

-- 
Jean Delvare