Compiling custom kernels for P1.1 (with fiasco-gen) - Page 20 - maemo.org

craftyguy | # 191 | 2010-04-10, 03:20 | Report

Titan;
I just tested your latest LV kernel, and it works perfectly! Calls no longer revert frequency to 600mhz!

I'll give it a day and monitor battery to see if undervolting impacts battery life much. Running an non-undervolt kernel (@800mhz) caused shorter batterylife. I dont know the percentage, but using Battery Eye and comparing the days I was booted into the OC kernel vs days I was not, using the OC kernel resulted in a steeper decline of battery charge over the same amount of time.

I know it's extremely difficult to have the best of both worlds (battery life + performance), but you're doing an excellent job maintaining this kernel! Keep up the great work!

jaeezzy | # 192 | 2010-04-10, 03:42 | Report

Originally Posted by titan View Post

new low voltage versions of the maemo20 kernel
http://talk.maemo.org/showpost.php?p...postcount=2004

Sorry for double posting, I thought it will be more visible here as the other thread's flooded heavily

, I'm using your ulv kernel 2.6.28-maemo_20 and just now I happened to come across which I guess is a bug. I tried to use screen calibration app from settings but as soon as I tap the first point it closes automatically. Before with other Lehto's kernels it never occured but now its happening all the time(In 810MHz and restarted device which set it to 600 but still the problem persists). Can anyone else confirm this as well plz.. other than this haven't encountered any and of course loving the ability to change frequencies at runtime.. thanks

craftyguy | # 193 | 2010-04-10, 04:00 | Report

Originally Posted by jaeezzy View Post

Sorry for double posting, I thought it will be more visible here as the other thread's flooded heavily

, I'm using your ulv kernel 2.6.28-maemo_20 and just now I happened to come across which I guess is a bug. I tried to use screen calibration app from settings but as soon as I tap the first point it closes automatically. Before with other Lehto's kernels it never occured but now its happening all the time(In 810MHz and restarted device which set it to 600 but still the problem persists). Can anyone else confirm this as well plz.. other than this haven't encountered any and of course loving the ability to change frequencies at runtime.. thanks

http://talk.maemo.org/showpost.php?p...&postcount=160

egoshin | # 194 | 2010-04-10, 04:10 | Report

Originally Posted by craftyguy View Post

Can this be placed in /etc/pmconfig?

I don't think so.

This is a temporary solution - just for test a power-saving performance. The list of processes may be different at different times. The permanent solution requires a change of ohmd.

BlackDiamond | # 195 | 2010-04-10, 09:03 | Report

Titan,
it seems there's a problem when trying to remove package kernel-modules-maemo.
I get an error from rm: "cannot remove '/lib/modules/2.6.28.10maemo-omap1/modules.*"
while the directory created when installing is '/lib/modules/2.6.28.10maemo-ocu-omap1/'

titan | # 196 | 2010-04-10, 09:21 | Report

Originally Posted by BlackDiamond View Post

Titan,
it seems there's a problem when trying to remove package kernel-modules-maemo.
I get an error from rm: "cannot remove '/lib/modules/2.6.28.10maemo-omap1/modules.*"
while the directory created when installing is '/lib/modules/2.6.28.10maemo-ocu-omap1/'

that was a bug in an earlier version of my OC kernels.
as a workaround just
"rm /var/lib/dpkg/info/kernel-modules-maemo.postrm"

The Following 2 Users Say Thank You to titan For This Useful Post:
BlackDiamond, youngcalihottie

titan | # 197 | 2010-04-10, 09:24 | Report

Originally Posted by egoshin View Post

renice 1 `ps | grep modest | cut -c1-5`

"renice 1 `pgrep modest`" should do the same

The Following 3 Users Say Thank You to titan For This Useful Post:
cheve, egoshin, iKneaDough

ticktock666 | # 198 | 2010-04-10, 10:39 | Report

Originally Posted by egoshin View Post

In addition I recommend you to run this commands and test it again:

echo "1" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load

renice 1 `cat /syspart/applications/standby/background/tasks`
renice 1 `ps | grep modest | cut -c1-5`

It should save you a lot of battery over standby. I have increase more then 50%.

(Note: modest renice would work until you call e-mail GUI, after that it reverts back. I am working on it)

Will this make the "ignore_nice_load" setting change permanent ? or will I have to redo it after each reboot ? I understand that the "renice" commands are for testing purposes and to check on results, correct ?

Last edited by ticktock666; 2010-04-10 at 11:04.

egoshin | # 199 | 2010-04-10, 17:37 | Report

Originally Posted by ticktock666 View Post

Will this make the "ignore_nice_load" setting change permanent ? or will I have to redo it after each reboot ? I understand that the "renice" commands are for testing purposes and to check on results, correct ?

It is NOT permanent. Moreover, because it is related with process environment it can slowly decrease while you actively use N900.

I wrote that asking for test of standby time - if it works not only for me I would find a permanent solution, I am just working on it now.

oldnetdog | # 200 | 2010-04-11, 09:33 | Report

Does PPTP w/ MPPE support included in your custom kernel?
I want this feature very much, thanks.