[ltp] Re: tpfand configuration for an X200s

[Volker Krueger]

I start wondering anyway if the larger power consumption is due to the
fan only.

I guess, instead (I see Henrique' s point!) , the consumption of come
linux component is higher and thus leads to a warmer processor which
leads in turn to an increased fan speed...

Is someone willing to step by step unload the lenovo drivers from vista
and check  which deleted driver results in a higher consumption?

Then,  perhaps we can identify the bad guy.

Is there a program like powertop for windows?

best,
vok


Henrique de Moraes Holschuh wrote:
> On Fri, 05 Dec 2008, Volker Krüger wrote:
>   
>> could it be possible that lenovo's powermanagement is overriding the bios
>> fan control (among other things)?
>>     
>
> This is very unlikely.
>
>   
>> could someone investigate if there is a difference in power consumption
>> between the ordinary visa (w/o lenovo drivers) and lenovo's vista (with
>> lenovo drivers)?
>>     
>
> The Lenovo drivers make Vista (and XP) behave much better on the ThinkPad.
> Power draw with no Lenovo drivers is expected to be higher.
>
> Which means the test will not give you any definite answer about the fan.
>
>   
>> It could be that the ordinary vista uses as much power as linux, right?
>>     
>
> Yes.
>
>   
>> Another possibility is that the bios is used differently by vista and by
>> linux: The bios might very well have a bug which might not come apparent
>> under vista... How much does the X200s consume under XP or win2000?
>>     
>
> That's a possibility, yes.
>
>   

-- 
Dr. Ing. Volker Krüger
CVMI-CIT
Aalborg University
Lautrupvang 15
3750 Ballerup
Denmark
phone: +45-9940-2495
www.cvmi.aau.dk/~vok