Re: Overclock the N900?
 

is that better than ideal n does that save more battery?

Re: Overclock the N900?
 

UPDATE
- I have updated my Queen Beecon Widget section of my overclocking guide with full step by step on how to set it up for the first timers using QBW. Hopefully, it'll make it easier for beginners to follow and set the widget buttons up.


No. In terms of voltage:

stock > lv > ulv > ideal > starving

Re: Overclock the N900?
 

Strangely, I found out that my battery will last longer on LV. Anyway, I get a very good battery life with it!

Re: Overclock the N900?
 

sadly, im still having problems with overclocking :(!like i said, my phone runs awesomely smooth for a while..but after that its just too unresponsive!any ideas for that?should i try overclocking to 1 ghz?
n jakiman can you please link me on how to use qbw??is that on page 78 too?

Re: Overclock the N900?
 

I actually have exactly the same problem using lv and found the only way to rectify it is to restart the phone!

since using QueenBeecon though and a power saving profile - only overclocking to 1ghz when required i havent seen so many problems. i have no idea what it is though, but it is exactly as you say. just after a while it becomes slow and unresponsive although conky shows it is still overclocked etc.

Seems to happen randomly as well. for example its not just after a phone call or receiving a message.

Re: Overclock the N900?
 

Phone getting unresponsive might be an issue of RAM<->SWAP and not really related to core clock rate. Having too many python widgets (or for me any) on your home screens (hildon-home, the stuff you see on your desktops) will leak RAM after a while and start swapping for everything. Your phone should run smooth at 600MHz if freshly restarted (at least 4mins after restart as sometimes thumbnailer and stuff kick in). If your phone runs smooth at any point and is getting unresponsive or slow over time I would bet on swapping.

Re: Overclock the N900?
 

ah right. thats really interesting. is there any way to rectify this or is it just a case of not having any python widgits?

Re: Overclock the N900?
 

Hmm, bit strange: frequency limits are changing by themself. My phone has its own will?:eek:

Has anyone any idea what could cause this? I set them back and after an hour they have changed randomly.

Re: Overclock the N900?
 

i have exactly the same issue as you. i have overclocked my fone a week ago. i changed clock limits by loading lv profile with limits as 250 850. that day it really worked smooth and nice. however from next day onwards it began to lag and started random freezing again so i checked the kernel-config settings and i noticed that it had changed the limits from 250-850 to 125-850.

I have reset the limits back to 250-850 three times so far but later when i check the lower limits change back from 250 to 125 all by itself. i have no idea how to stop it from changing and hope these techies can help us.

Re: Overclock the N900?
 

125 is probably being set after a phone call.Are you sure you have 125 marked as to avoid.If not run this
echo 125000 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/avoid_frequencies

Re: Overclock the N900?
 

to be honest i have no idea how 125 is get activated.

yes it is marked as avoid as shown in the pic attachment labeled as screenshot02.

however later on it changes to 125 as shown in next pic labelled as screenshot04 even though avoid 125 shows in both pics.

Re: Overclock the N900?
 

Looking at your screenshot, it's working as expected. I think you are getting confused. :p

You have 125 in the avoid frequencies. That means even if you have Min Frequency set to 125, it will never use 125 and only go down to 250. So it overrides what you have set for the min. frequencies. If your "current frequency" was showing 125, then there would be something wrong. That isn't the case according to your screenshots. So all is working fine and your N900 is current using 250 - 850.

Re: Overclock the N900?
 

Is the starving profile really the one that use the less power? I use that and 900mhz overclocking and my device is stable so I was wondering if it is really what it is...:D

Re: Overclock the N900?
 

http://talk.maemo.org/showpost.php?p...&postcount=904


"...Finally, being the device basically plastic, not perceiving high temperature at surface level is not so relevant, since plastic is not such a good thermal conductor and allows for higher and longer power peaks. Phones with metallic casing have lower max temperature allowed at surface level because of the higher transfer efficiency (the delta being 15C, on top of my head).
..."

Mr. Igor states that phones with metal casing have a LOWER MAX TEMP allowed.

Shouldn't it be the other way around? Shouldn't phones with plastic casing have a LOWER MAX allowed temp?

So plastic is indeed a poorer thermal conductor, so wouldn't you want the plastic one to have the lower max allowed temp? the plastic means there will be a bigger delta, or difference in temp, therefore the sensor or whatever is going to be receiveing news of the high temp later, rather than metal casing, a good thermal conductor, with a smaller delta, or difference in temp, delivering the news of high temps sooner :P

Does anyone see what Im getting at? I must be thinking of something else?

Re: Overclock the N900?
 

Maybe he's talking in relation to the external temperature of the case?
Maybe you aren't allowed to make the phone get too hot externally. (or it could burn your hands)
So the allowed max temp for the CPU is lower with a phone that has a metal casing possibly.

Re: Overclock the N900?
 

just quick question guys what version kernel recently stable right now, i still using kernel version 37. havent read this quite long so what is news and update ?

Re: Overclock the N900?
 

hi there , ive had my n900 since 19th december , and im quite sateisfied of it . after following the overclock thread a while i decided to oc my n900.
i used the ideal profile 500-850 used it for 3-4 days , the 4th day i was connected to my wifi , and was listening to an internet radio station why prepairing to sleep :S
i fall asleep and forgot the radio ( media player app ) running and streaming ! thnk god my brother woke me up a couple of hours later , when i went to turn of the n900 it was VERY VERY HOT !! i can surley say if i left it 2-3 hours more it would smell bad !
notice that NOTHING ELSE was running .. that was it for me :S done with OC.

Re: Overclock the N900?
 

2.6.28.10power37

so still 37...

Re: Overclock the N900?
 

Isnt the cpu supposed to chill out when temps get high?

Re: Overclock the N900?
 

dont know ! but the thing is that is was realy realy warm .
too bad thought cause there was a realy notisable difference in speed it opened the messeges gallery scroll through menu etc :S

Re: Overclock the N900?
 

*steps back out*

Ahhh, that could be a solution :) Thank you.

Re: Overclock the N900?
 

Hi, I need expertise for a couple of questions. If the overclocking profile does not list a particular frequency and if that frequency is used then what voltage will it run at? For example
So what will 250 be using now since it isn't specified (30 ?)
Also some overclock profiles have the lowest value of "FREQS" at "0:30,90" (eg lv).I guess this is for what they say the cpu sleeps at 0 Mhz.What effect does it have if it is absent like above.

Secondly if the device is getting hot I underclock it to defaults 250 600, but what should optimally be the value of voltages.Should I leave it to the one I am using (ideal) or should I revert to stock voltages.
Will the higher voltages of stock cause it to heat more or will they reduce stress on cpu?

Re: Overclock the N900?
 

I've been happily overclocking my N900 for a month now with the ideal settings, thanks to jakiman and others here, with no issues so far.
Still, just to show my ignorane on the matter I have not yet figured out the following..
Does overclocking and/or undervloting affect the CPU alone or does it also affect other parts of the device, like say the wireless module, the gps, the bluetooth module, the phone function itself giving them perhaps less power and affecting their performance?
And how is the DSP affected by the various profiles and what is the consequence of this?

Re: Overclock the N900?
 

I know that many people probably already asked but is there any noob-friendly guide on OCing n900? I need someone to help me out with the basics, like voltages, cpufrequencies etc... I just don't know how to do it myself(i know i sound dumb...)
So, please, if possible, help me out by linking some guides and info for me.

Re: Overclock the N900?
 

For the raw basics read this. For more detailed info check out the links at the end of the post.

http://talk.maemo.org/showthread.php...516#post731516

Re: Overclock the N900?
 

Some help here please.Doesn't anybody know the answer.Where have all the overclock experts gone:confused:

Re: Overclock the N900?
 

HElp !!! HeLp!!!

MY n900 Keep Rebooting after i deinstall "Enhanced kernel for power users (settings)" .

i can't even Connect my N900 in flasher mode
it show "Suitable USB device not found, waiting."

Re: Overclock the N900?
 

Why isn't it specified? Did you create that profile?
I'm actually not 100% what happens if they are not specified.
But I think it just means it will not be used even if you specify beyond the limites.
Like if you specify 1500Mhz, it just won't go that high.
or it may not idle at 0Mhz so you are going to be hit in terms of power saving.

Higher voltage is always more stressful to the cpu.
But that is if it is beyond what it can handle.
Stock @ 250-600 will be not much diff to Ideal @ 250-600.
Although technically, Ideal will use less voltage and hence potentially use less power.

Why are you trying to use such profile anyways. I don't recommend it.

I recommend you stick with LV/ULV/IDEAL profiles. Many have issues using IDEAL voltages. If so, use LV or ULV.
Then just set the limits manually and set the avoid frequencies manually. (if desired)

Re: Overclock the N900?
 

I just wanted to say that I had the same problem,

I use ideal with limits set from 500-850, and it's always starts out amazingly fast, then hours/day later it would get incredibly slow that i would have to reboot the phone for it to reset to it's default settings

Right now i just set it at lv mode with limits fro 250-805, lets hope that works out out, anyone got a fix or any updates with this issue? i haven't been hanging around this thread lately

Re: Overclock the N900?
 

Maybe you have solved it by now? I know it can be frightening at first. Look for the numerous howtos or use the serach for your answer and you shall find your salvation.

Re: Overclock the N900?
 

Take a look in Conky.. maybe the swap or ram is full?

Re: Overclock the N900?
 

what is the latest stable version right now? i havent got much time to catch up all the thread, my current installed version is kernel v37.

Re: Overclock the N900?
 

Thanks for your reply! Actually to be honest I didn't change anything.I have loaded the original ideal profile only, but recently when I checked, the above is what I found out.The values are specified in other profiles but I don't know why it isn't in ideal.I am sure I haven't messed around with it.

Re: Overclock the N900?
 

See link below. v37 is still the latest.
http://maemo.org/packages/view/kernel-power/

Re: Overclock the N900?
 

I think I'm -very- lucky with my N900.
I set the xlv profile, tested each freq. up to 1150, and then started lowering voltages until it locked up/generated artifacts.
I have this running stably(tested with videos via Mplayer) for at least 5 minutes:
I'm not sure - Now that I have it (seemingly) stable OC'd up to 1.15GHZ, should I mess around with even more settings to improve batterylife/other stuff? Currently, I have it limited to 1.10GHZ; no need to run 1.15GHZ unless I find something that really needs it.

-Rob

Re: Overclock the N900?
 

I don't think lowering the voltage much lower is going to give you any noticeable improvement in battery life. (Unless you max out the CPU at 100% with LCD turned off)

So if it's stable at xlv voltages, try ideal profile and if it's stable, no need to go much lower. It might look stable when playing videos/games but it may still be causing minute errors which may mean data corruption during file writes etc which you definitely want to avoide. Higher voltage does not mean "bad" unless it becomes the catalyst for overheating etc.

Re: Overclock the N900?
 

FWIW, I would prefer jakiman's basics info to this. The jakiman information is linked to from the main overclocking wiki.

The main reason is this:

"9. I do not recommend using the command:

kernel-config default <name>

This makes your custom configuration the default settings"

This it seems to me is wrong, and I thought it had been pointed out before. Point 9 goes on to say that you get into a reboot loop if you have bad default settings. But Titan's kernel has protection built into it for if you get into a reboot loop, and I didn't see that mentioned in point 9. So I think it's inaccurate. You actually get a message saying that you rebooted unexpectedly and your default settings haven't been used.

Also, I like Jakiman's document and the way he is quick to update it if anything new comes up.

Here is the location of Jakiman's doc.

http://talk.maemo.org/showpost.php?p=595582&postcount=774

Re: Overclock the N900?
 

@jakiman: Incidentally, how DO you check for file write errors?

I'm running 500-850 on stock starving for around a month now (250-700 for another month before that) and I've seen little by way of rebooting or other errors. Or any OBVIOUS data corruption for that matter.

But seeing that other people struggle with XLV, I do get worried from time to time.

Also, are there any benefits from changing the number of steps the CPU cycles through? I mean, for 500-850, the CPU goes 500-550-600-700-750-800-850 - any gains by limiting that to, say 500-600-700-850 (by deleting the unwanted steps)?

Theoretical or otherwise.

Re: Overclock the N900?
 

Hi!

Ive been using... euhm... some kind of kernel, which Im not really sure of...

basically any time I restart my device, I input "kernel-config load ideal" followed by "kernel-config limits 500 900"

I havent had problems at all, only thing Ive noticed is when my device is locked and I slide out the keyboard and shut it without screen- or keypresses, sometimes it wont relock. this gets fixed by a restart, and Im not sure if its really related.

Works flawlessly at 500/900 on the ideal settings, besides the infrequent slidelock thing. Havent seen any drop or gain in battery, not sure if I should be.

Re: Overclock the N900?
 

This is interesting. My N900 is clocked from 500 - 1100 Mhz
Is it possible/smart to use only the two (500 & 1100) frequencies? No steps in between. The battery will drain much faster I guess.

Edit:
How much time does it take the CPU to go from 500 to 1100 with steps between the frequencies?