Re: Strange temperature of AMD FX4100 cpu and power consumption

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Guenter Roeck wrote:
> On Mon, Sep 10, 2012 at 09:13:46PM +0200, Andreas Hartmann wrote:
>> Andreas Herrmann wrote:
>>> On Sat, Sep 08, 2012 at 09:50:25AM -0700, Guenter Roeck wrote:
>>>> On Sat, Sep 08, 2012 at 06:34:16PM +0200, Andreas Hartmann
>>>> wrote:
>>> 
>>> [...]
>>> 
>>>>> fam15h_power-pci-00c4 Adapter: PCI adapter power1:
>>>>> 85.74 W
>>>>> 
>>>>> I read about this value, which would be the power
>>>>> consumption of the CPU. If this would be correct, my cpu
>>>>> wouldn't be a cpu but a light bulb :-) and the fan would
>>>>> most probably run on maximum speed non stop (which it
>>>>> doesn't do - it's running on minimum).
>>>>> 
>>>> If they have a built-in AC unit, both temperature and power
>>>> consumption would make sense. Hmm ... maybe I should apply
>>>> for a patent on that idea :).
>>>> 
>>>>> CPU:       AMD FX(tm)-4100 Quad-Core Processor Board:
>>>>> Gigabyte GA-990XA-UD3 Bios:      Award F11 05/17/2012 
>>>>> Kernel:    3.4.10-1.1-desktop 64 bit (openSUSE) lmsensors:
>>>>> sensors-3.3.2-55.1.x86_64
>>>>> 
>>>>> 
>>>>> Do you need more information about the hardware? Feel free
>>>>> to ask!
>>> 
>>> What's the output of
>>> 
>>> # setpci -s 18.5 0xe0.l
>> 
>> Hmm, a few hours later and one s2ram / resume cycle in between,
>> the power value is broken again. It's showing constantly power1:
>> 85.74 W in idle mode. setpci now says:
>> 
>> 00fff83e (first try)
>> 
>> 00fffffe (all other tries)
>> 
>> 
>> As I did it a few hours ago, I got 003930c9 and the reported
>> values have been between 26 W and 40 W (sounds reasonable to me)
>> - before and after entering setpci.
>> 
> Looking into the driver, I suspect the power meter configuration
> might not survive a suspend/resume cycle. What do you see after a
> complete reboot ?

After reboot (from running machine or from power off to power on), the
values are as expected (= ok).


Regards,
Andreas

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