[lm-sensors] module c7temp shows voltage, but no temperature

JasonZhao at viatech.com.cn JasonZhao at viatech.com.cn
Fri Mar 13 12:03:10 CET 2009

Will reply you tonight (3 hours later), back to home now:)
However I found I only have a " VIA C7 BIOS WRITERS GUIDE_2.5"( created
in 04/04/07) on hand. My colleague that works for c7 on EFI only have
this datasheet too.


> -----Original Message-----
> From: Rudolf Marek [mailto:r.marek at assembler.cz]
> Sent: Friday, March 13, 2009 6:02 PM
> To: Jason Zhao
> Cc: Michael Reinelt; Juerg Haefliger; justin at justinzane.com;
> lm-sensors at lm-sensors.org
> Subject: Re: [lm-sensors] module c7temp shows voltage, but no
> Hello Jason,
> We have some problem with c7temp driver in the linux. This was done by
> The driver can be downloaded from the lm-sensors.org website in
> section.
> It seems some version of fam6 model D does not have any temperature
> in
> >    0xc0000002: eax=0x00000000 ebx=0x08000810 ecx=0x08100f13
> Jason, Please can you look to some more recent version of C7 data
book, where
> the values for temperature are stored? (normally they are for cpuid
> 0xc0000002 in EAX. Here are zeros.
> I dont know what CPU revision it is exactly. I guess we will need to
read some
> other MSR to get current version. Juerg do you know this? Its should
be MSR
> 1154h.
> All I know that the cpu is also at HP Mini-note 2133.
> Thanks,
> Rudolf

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