[ltp] Re: external DIGITAL monitor with ubuntu and intel i950 graphics

axp linux-thinkpad@linux-thinkpad.org
Wed, 08 Apr 2009 12:23:31 +0200


Volker Krueger wrote:
> Hi Christoph,
>
> good point!
>
> But what is strange is that even with a stopped HD in my X200s, I cannot
> reach below 8 W with the reasonably good "working conditions" outlined
> by Ferdinand.
> There must be more to it. The X301 seems to have a UL9400 processor
> which has slightly less power than the SL9400 but which also uses 10W
> instead of 17W peak consumption. Perhaps that could also make a
> difference, not sure...
>
> If there are more people interested, we could start to generate some
> statistic about the different settings people use and their effects.
> It would probably make sense to limit those considerations only to
> X200,X200s,X30x series or else we would not get a good statistic out...
>
> who of the X200,X200s/X30x users would be interested?
>   
I would be interested, especially the undervolting issues would be great
to be outlined.


so far,
Ferdinand
> best,
> Volker
>
>
>
> Christoph Bier wrote:
>   
>> axp schrieb:
>>     
>>> Hi Volker,
>>>
>>> Volker Krueger wrote:
>>>       
>>>> HI Ferdinand,
>>>>
>>>>
>>>> I can get down to 6.7W if I turn off the wireless, the HD, the fan and
>>>> the monitor to the lowest illumination possible. If that is the case, I
>>>> know even a trick to get it to use 0 Watts :-))
>>>>   
>>>>         
>>> i get ~6W for almost idle, Wlan still on, backlight at half, reading
>>> things in the browser without too much interrupt generation by the inout
>>> devices.
>>>
>>> i get ~7W for a fully (for my case) working setup, wlan on, lot's of
>>> typing (vim latexsuite), turned of anything else (no Bluetooth, no 3g
>>> [this thing needs a lot of power], Wlan set to powersave mode) display
>>> reduced to 3/4 of the maximum brightness.
>>>
>>> Machine: x301, led backlight, SSD HDD, intel iwl5300agn.
>>>       
>> That's it! It has an SSD and a very low voltage CPU but the X200s has
>> only a low voltage CPU (and additionally higher frequencies).
>>
>> Best
>> Christoph
>>