Re: Overclock the N900?
 

please read and install according to http://talk.maemo.org/showpost.php?p...&postcount=141
for me, the 125MHz kernel stays at 600MHz most of time while the 250MHz stays at 250MHz.

Re: Overclock the N900?
 

I don't think I should go for 900 Mhz in Mumbai..even in the winter..
Is heat the only issue when over-clocking though? Even in cooler climates, would the CPU's life shorten?

Re: Overclock the N900?
 

Hmm interesting, will re-do then get back!

Re: Overclock the N900?
 

Good morning, can anyone tell me how to edit pmconfig with the 900mhz package? i tried to edit the file and i got a endless reboot, i have to flash now, but im sure theres a way to edit the file appropriately. it scales the idle to 125 after the 900kernel but the max stays at 600.

Re: Overclock the N900?
 

But i am running PR1.1

Re: Overclock the N900?
 

All you need do is edit the line

scaling_max_freq 600000

and replace it with whatever you want the max to be for example

scaling_max_freq 850000

save - reboot.

Re: Overclock the N900?
 

post your "uname -a"

Re: Overclock the N900?
 

I'm going to re-flash from scratch, including eMMC with the files from nokia, then re-flash with 800mhz stock and see if the issue is replicated or not.

Re: Overclock the N900?
 

I think it's fair to say yes, but to what extent is a gamble and no one knows the exact degree of risk. Most people in this thread don't think the risk is great.

Re: Overclock the N900?
 

I have installed the 900mhz kernel.
CPU: 125mhz / 250mhz / 500mhz / 550mhz / 900mhz
DSP: 90mhz / 180mhz / 360mhz/ 400mhz / 430mhz
Now my N900 is fast as hell. :-)

But it stays on 500mhz when idle. Is this normal?

Re: Overclock the N900?
 

echo "1" > /sys/devices/platform/gpio-switch/slide/disable

(but it disables the KBD unlock too - sometime it is advantage, if you have a magnetic case).

Re: Overclock the N900?
 

Do you have lots of background apps? They can make you cpu stay in a higher scale

Re: Overclock the N900?
 

if your plugged into usb via pc then i believe so yes :-)

Re: Overclock the N900?
 

Linux Nokia-N900-42-11 2.6.28.10maemo-omap1 #1 PREEMPT Wed Mar 31 21:23:31 EEST 2010 armv7l unknown

Re: Overclock the N900?
 

Please do not REBOOT - use switch OFF-ON.

It has nothing with overclocking, see bug 7017 - https://bugs.maemo.org/show_bug.cgi?id=7017

Re: Overclock the N900?
 

this may sound daft but has anyone else had problems recieving text messages when signal is choppy after using an overclocked kernal?
two nights ago i was in work, where signal is bad, textin the missus, i updated the kernal to a fiasco 800/125 and havent recieved a message off her since. they come through when im in signal but if out of signal she sends and they dont come through when i get signal again. it definately has something to do with my changes because it is from that exact point onwards that i get the problem. havent read of a single other complaint like this any ideas?

Re: Overclock the N900?
 

Can you show an output of

cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state

while kernel has 125MHz capability?

Re: Overclock the N900?
 

then you have the older 2.6.28-Maemo18 package installed, not
the latest version 2.6.28-Maemo19. only the latest version supports OC.
just upgrade your package.

Re: Overclock the N900?
 

Can you show an output of

cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state

Re: Overclock the N900?
 

IIRC it was about 86,6% in 600MHz and the rest in 125MHz despite mostly idling...

Re: Overclock the N900?
 

Could anyone just make one simple step to step guide, How to install the overclocking kernel to 900mhz.

Would appreciate it thanks!

Re: Overclock the N900?
 

Interesting, a lot of people reported some battery saving.

Is it placebo or you just have a local effect?

EDIT: you sure you didn't have USB attached?

Re: Overclock the N900?
 

no cable attached, just Wifi enabled and Conky+Terminal running for 10mins.
could be a "local effect"

Re: Overclock the N900?
 

Just use your head and browse this topic. This same thing has been already asked dozens of times.

Re: Overclock the N900?
 

Has to be. My phone has been mostly idling for 4 hours and 44 minutes. Few phone calls, few apps installed, xterm.. Most of this time connected to wifi and conky on.

125mhz 77%
800mhz 11%

Re: Overclock the N900?
 

I installed the kernel app (version 19) that could be found in the repos
But my info is still missing at the About menu.
I flashed it before with the kernel zImage-900mhz, after that my info was gone.

I just couldn't retrieve it back :(
Read a lot of posts, still no luck...

Any help? :)

Re: Overclock the N900?
 

I have the same problem and mine reads:
Linux Nokia-N900-51-1 2.6.28.10maemo-omap1 #1 PREEMPT Tue Ap 6 13:21:33 EEST 2010 armv71 unknown

and as you can see i'm running the latest fw. the problem sees to lie elsewhere...

Edit: I installed the 125MHz enabled kernel and associated files. Now uname -a reads:
Linux Nokia-N900-51-1 2.6.28.10maemo-omap1 #1 PREEMPT Tue Apr 6 15:47:28 CEST 2010 armv71 unknown

My phone mostly seems to be idling at 125MHz by the way...

Re: Overclock the N900?
 

I'd say it's mostly placebo until I see some real statistical data. AFAIK nobody has done any real tests, people just report what they feel like the battery lasts (with extremely varying usage patterns).

Re: Overclock the N900?
 

Re: Overclock the N900?
 

hi could anyone using the 900/500dsp check the different frequencies pls?? i seem to be running at either 125,500 annd 900 only...

in idle, it does 125 and jumps to 900 for a second then back to 125...

only conky running...

edit.. the phone heard me... i saw a hint of 250

Re: Overclock the N900?
 

The thing is that there are numerous of diffrent posts about it..I would like to use one tutorial that several people have tried already. So that i know its working =)

Re: Overclock the N900?
 

Any help how to put the About info back? :)

Oh yeah, and secondly, I installed this:
http://maemo.org/packages/package_in....6.28-maemo19/

and went to xterm to edit the mhz to 1Ghz, so I did the following:
then I rebooted my device.

But It's still on 600mhz......

What did I do wrong? O_o

I hope anyone could help me with the 2 questions :)

Re: Overclock the N900?
 

Can you show an output of

cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state

while kernel has 125MHz capability?

Re: Overclock the N900?
 

- Rebooted N900. Any setup under /sys/... is temporary until next reboot. But it takes effect immediately.

Advice - read back this file and check that it was set.

(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq)

Re: Overclock the N900?
 

Simple. You stopped reading to soon.

People are doing potential harmfull things to their mobiles and are not even going to invest 10 minutes of their time to answer themselves obvious questions already answered MANY MANY TIMES BEFORE. Damn.

To be sort of on topic:
The changes are temporary you do via "echo". "Echo blabla >" only write a value to some device. In this case the device is a parameter to some kernel-function. When the kernel starts these parameters have some default, which has to be overriden every start. "pmconfig" does exactly this - it is a more simple way of echoing different values to different parameters.

Re: Overclock the N900?
 

I have Kernel-Flasher-Maemo 2.6.28-Maemo19 installed, yet my uname -a reads:

Linux Nokia-N900-42-11 2.6.28.10maemo-omap1 #1 PREEMPT Tue Apr 6 13:21:33 EEST 2010 armv7l unknown

I'm not too bothered as overclocking is working fine and it should be easy enough to update my phone one way or another. It's just odd.

Re: Overclock the N900?
 

I feel very dumb... didn't read it carefully.

How can I set this to permanent then? :)
So that it will be 1Ghz everytime I boot my device

Re: Overclock the N900?
 

What if i am not satisfied with it, How do i fall back to factory defaults? Any ways to backup the whole phone incase if i want to fall back? :)

Re: Overclock the N900?
 

Thats a valid point. I agree.


*** To permanent change max cpu freq ***
Update the file /etc/pmconfig
scaling_max_freq 600000
to
scaling_max_freq 900000
or whatever mhz you prefer or dare to try.
Information in this file is the source and sets the
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
when booting the device (same off course for the min_freq).

Re: Overclock the N900?
 

It should improve your 'idle' standby times as long as you dont have too much stuff running in the background. Keep an eye on what you install and it could make a difference, maybe even a big one but this will differ from person to person depending on what they use the phone for and wots installed.

If you dont have much running when the phone is idle or no background apps run constantly then you should benefit and have spare power for when its needed.

when the phone is active, the big drains are 3g data wireless and screen but it would be nice to tune the device to idle along nice and slow saving mAh's for when you require it :)

When using the device though screen