Share your best kernel-power settings HERE!
 

Hey community and talksters,
I need some clarifications about Kernel-Power, what is the ulv, xlv, and other settings? Are they supposed to change the CPU clockspeed? I tried all of them but the CPU rather stays at 250 600. Recently I faced some issue where I couldn't set the lowest frequency under 250, is this a bug?

Re: Requesting Knowledge Power-Kernel
 

Thx. So they should deal with the power current right? And what is the best one in terms of battery life? I tried this:
but conky tells me it's just on 250 to 1000, how can I make it go down to 125?

Re: Requesting Knowledge Power-Kernel
 

are voltage settings, they helps to lower the consumption and heat


here you have a chart

http://wiki.maemo.org/Overclocking#Calculating_voltages

Re: Requesting Knowledge Power-Kernel
 

So I guess the ULV is the best one in terms of battery life right? But I really need to know what's the cause of my device not underclocking to 125MHz? :confused:

Re: Requesting Knowledge Power-Kernel
 

from http://wiki.maemo.org/Overclocking

setting the lowest frequency to 125 MHz does NOT improve battery life. In fact, many people noticed worse battery life, instability and worse responsiveness

in fact, it actually extends the time between processor goes from 250Mhz to 0Mhz (sleep)

anyway, if you look at the chart, you'll notice that 125 and 250 consumes the same voltage in ULV XLV and Ideal

also from:

http://wiki.maemo.org/Kernel_Power#Remarks

if you enable 125MHz also set "echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load"

there are several clock freqs that are avoided, you have to edit

/sys/devices/system/cpu/cpu0/cpufreq/ondemand/avoid_frequencies

Re: Requesting Knowledge Power-Kernel
 

so let's say I want the limits to be set as 250 1000. What is the best power scheme I can choose? I read about smartreflex, is this feature on or does it require something to initiate?

Re: Requesting Knowledge Power-Kernel
 

so I can set the ULV power scheme with the limits as 250 1000. Is this going to give me battery life improvements?

Re: Requesting Knowledge Power-Kernel
 

Are you kidding me? I studied the wiki! I memorized it! It just seems vague for a newbie!

Re: Requesting Knowledge Power-Kernel
 

Which did you find vaguest -- the main Overclocking Wiki, the Jakiman part, or the kernel-specific area? Or perhaps you found the 5,000 plus messages in the Overclocking thread too unspecific?

Re: Requesting Knowledge Power-Kernel
 

FREQUENCY Nokia LV ULV XLV ideal
0 MHz 30 30 25 30 30
125 MHz 30 30 25 20 30
250 MHz 38 38 25 30 30
500 MHz 48 48 33 33 30
550 MHz *54* 48 38 38 33
600 MHz 60 *54* 38 38 38
700 MHz 54 45 45 45
750 MHz 54 45 45 45
810 MHz 54 48 48 48
850 MHz 54 48 48 48
900 MHz 54 *54* *54* *54*
950 MHz 54 54 54 54
1000 MHz 60 60 60 60
1100 MHz 72 72 72 72
1150 MHz 72 72 72 72

check this... lv, xlv etc all use different voltage. The best one would be ideal with 500 950. the voltage are similar to normal. check the voltages - the lower the longer the battery!

http://wiki.maemo.org/Overclocking (summary) as it doesnt look right when i pasted it