[ltp] X200 Battery Life

[n0rdik0]

Christoph Bier wrote:
> 
> n0rdik0 schrieb am 19.12.2008 04:43:
> 
> [...]
> 
>> - On Linux, with every powersaving feature I could think of, the minimum
>> is
>> 7.1W, averaging 7.4W for a several hour period. This includes: minimum
>> backlight, cpufreq ondemand, laptop-mode, no radios, HD spun down,
>> hda_intel, pcie and sata powersave modes, usb autosuspend, fan off, kde3
>> environment with less than 10 wakeups/s. 
> 
> Very impressive! Yesterday I did my first testing for power
> consumption to answer Stefan's question in a different thread. I
> used powertop to reduce power consumption but ended up at an average
> of 12W and about 100 wakeups/s! I really wonder how you got the fan
> off since for my X200s this doesn't work:
> http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2008-December/045688.html
> 
> [...]
> 
> Best
> Christoph
> -- 
> +++ Typografie-Regeln: http://zvisionwelt.de/downloads.html (1.6)
> 
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> 
> 
I already answered it in another post (among all the other twaeks to reduce
power drain) but in case you don't read it, I control the fan passing
"fan_control=1" to the thinkpad_acpi module.
BTW, to re-enable it I use "level auto", not "level 7", maybe that's the
difference.
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