Originally Posted by buxz777

hey peeps

sorry to be a pain in the but

tryed looking through thread for how to change to clock speed from 800mhz to 1ghz on the ultra low voltage kernel

ive read that i have to change the scaling_max_freq setting in /etc/pmconfig (e.g., using vi)

but how to do it :-)

can someone pm me please :-)u

thanks in advance and again sorry to be a pain in the butt

morning to everyone

ps
id like to permanenlt change it not just change it so that it resets after a call :-) thanks again

Originally Posted by geneven

Go to Google and type vi tutorial. Read one. You'll be glad you did.

Originally Posted by benzo8

I've installed titan's latest ulv using wget and dpkg...
When I do an apt-get upgrade, it looks to upgrade kernel-maemo and kernel-flasher-maemo. I assume this is the normal voltage kernel from extras-testing, and allowing this to go ahead will lose the ulv benefits?

Originally Posted by maykon-de-angra

Tintan Please ...
Put it here> http://www.saunalahti.fi/crailt/ A kernel zImage-1000MHz and
zImage-1000Mhz-500dsp

Originally Posted by titan

ULV should improve battery life and reduce CPU damage but it may be less stable.
current low voltage kernels:
http://talk.maemo.org/showpost.php?p...postcount=2004

Originally Posted by titan

I have uploaded two new low voltage kernels.
Both are the same as the maemo20 kernel in extras-devel except for the lower voltages,
i.e. they preserve your freq. limits over phone calls and don't lock to 600Mhz during phone calls.
The default limits are 250-600 MHz.
A new feature in all maemo20 kernels is the bq27x00_battery module by Matan
which gives you more info about the battery in /sys/class/power_supply/bq27200-0/

The ultralow voltage (ulv) kernel is inspired by Letho's settings.
The less extreme low voltage (lv) kernel is inspired by Matan's settings.

Download ULV:

Code:

wget http://maemory.com/N900/overclock/ulv/kernel-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/ulv/kernel-modules-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/ulv/kernel-flasher-maemo_2.6.28-maemo20_armel.deb

Download LV:

Code:

wget http://maemory.com/N900/overclock/lv/kernel-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/lv/kernel-modules-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/lv/kernel-flasher-maemo_2.6.28-maemo20_armel.deb

Installation

Code:

dpkg -i kernel-m*
dpkg -i kernel-f*
halt

To enable 125Mhz use 124999 for scaling_min_freq.
According to BlackDiamond you should
"echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load"
for 125MHz http://talk.maemo.org/showpost.php?p...&postcount=185

Also try the hint by nightfire http://talk.maemo.org/showpost.php?p...&postcount=170 for improved responsiveness.

The warning "WARNING: at /home/builder1/maemo-fremantle-armel-extras-devel/work/kernel-maemo-2.6.28/arch/arm/mach-omap2/clock34xx.c:443" some people see in dmesg indicates that we don't really know what we're doing
The same applies to the DSP settings - it is not clear whether Letho's and my kernel actually set them to >430MHz. Someone familiar with frequency selection should have a look at the code...

so far the ULV kernel works fine for me with [125,600] Mhz till 850 MHz. 900 crashed it. EDIT: I just increased the 900 voltage in an update
EDIT2: another update replaced 800 by 810MHz in ULV and LV kernels

Originally Posted by thecube

downloaded the ulv and installed it
have only 600MHz...
do I need to edit somewhere something??

Originally Posted by fixfox

For me, Lehto's ulv versions were stable but the idle period battery drain of the ulv kernels (specifically the 1000, which was running at the default 800mhz ) was woeful.

I've returned to Lehto's 800mhz kernel this morning.

It's much much easier on the battery for me!