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-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   Overclock the N900? (https://talk.maemo.org/showthread.php?t=39753)

natedog400 2011-02-22 23:30

Re: Overclock the N900?
 
Anyone? How do you stop scaling?

MyNokiaN900 2011-02-23 00:03

Re: Overclock the N900?
 
Quote:

Originally Posted by natedog400 (Post 950556)
Haven't noticed any difference! Just does things instantly like it should! But like i said... it doesn't stay fixed for some reason?

Here is your answer Natedog. Check out the post from Jakiman - http://talk.maemo.org/showpost.php?p...postcount=4917

I recall adding it to my post on overclocking.
4. Jakiman offers some extra steps for setting the same MIN and MAX settings (e.g. 1000 1000). These are the settings I applied after I successfully completed step 1 and they work brilliantly. My N900 is super fast now and surprisingly very stable. I managed to open 56 applications (before it started to falter).

spl0z 2011-02-26 23:53

Re: Overclock the N900?
 
Hi, i have a question about the warranty when overclocking, so i mean if u do overclock, but something comes up and u want to take your phone back to the store for warranty fix, how do the people in the store find out that it's overclocked, if u flash your phone back to the way it was from the factory and install the nokia kernel again? thanks!

ArnimS 2011-02-27 10:46

Re: Overclock the N900?
 
Hi Kids. If santa finds you overclocking, then selling them on ebay without mentioning your OC experiments, he will sneak into your bedroom at night and break your kneecaps.

Maj3stic 2011-02-28 00:23

Re: Overclock the N900?
 
I have followed Jakimans fixed overclocking guide and it seems to stay fixed at whatever i set it too ( 850, 900, even 1000) then after a while it scales back to 125 after I do a kernel-config show. I do that when i start to notice the phone starts being unresponsive or slow. I think maybe maemodder is the culprit since I add the avoided frequencies there which I thought would make it easier but no 125 still shows up after about an hour or so of fixed oct. So my question is are there any people out there with a fixed oc using maemodder without it scaling back to 125 after a while. Thank you appreciate all the help.

epitaph 2011-02-28 00:59

Re: Overclock the N900?
 
Quote:

Originally Posted by Maj3stic (Post 956922)
I have followed Jakimans fixed overclocking guide and it seems to stay fixed at whatever i set it too ( 850, 900, even 1000) then after a while it scales back to 125 after I do a kernel-config show. I do that when i start to notice the phone starts being unresponsive or slow. I think maybe maemodder is the culprit since I add the avoided frequencies there which I thought would make it easier but no 125 still shows up after about an hour or so of fixed oct. So my question is are there any people out there with a fixed oc using maemodder without it scaling back to 125 after a while. Thank you appreciate all the help.

I don't know about maemodder but I have a quick and dirty fix for it but u have to do it at startup otherwise it got erased when u reboot. To fix this just write-protect the cpu min scaling value:

chmod 444 /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

If u have installed my tools u can uncomment that line in /opt/n900-tune-up/n900-tune-up/tune-up.

Maj3stic 2011-02-28 01:25

Re: Overclock the N900?
 
Thanks epitaph i entered that line in xterminal and it accepted it but nothing happened , is that correct? Or should I have seen something occur. My max and min are fixed at 850 for the time being so I will wait and see if it reverts back to 125 as a min. Hopefully this works and it stays fixed at 850. Thanks once more for your response. Also is the xlv profile the optimal profile to fix an oc too? It's the one Jakiman uses but I don't know if that's personal preference or what is recommended

epitaph 2011-02-28 01:36

Re: Overclock the N900?
 
Quote:

Originally Posted by Maj3stic (Post 956947)
Thanks epitaph i entered that line in xterminal and it accepted it but nothing happened , is that correct? Or should I have seen something occur. My max and min are fixed at 850 for the time being so I will wait and see if it reverts back to 125 as a min. Hopefully this works and it stays fixed at 850. Thanks once more for your response. Also is the xlv profile the optimal profile to fix an oc too? It's the one Jakiman uses but I don't know if that's personal preference or what is recommended

I didn't read the wiki about power kernel but AFAIK all the profiles and xlv should add 125 Mhz to the avoided frequencies. If this doesn't work then I'm not up-to-date. I've found my fix during my studies with my tune-up scripts. it's because the phone-app wants to write this 125 mhz frequency into min scaling. The fix can only work if 125 Mhz isn't already written in min scaling. Hence u can check it with cat first:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

and then write-protect:

chmod 444 /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

Also u have to repeat this at startup and also I don't do phone app very much so I can't help u but the fix should work! Also in Linux when a command is succesful u don't get a feedback. I don't know what this is called! Also xlv is just an undervolting profile. It didn't work for me it is dependent of ur device i for myself use the default profile and 950 Mhz!

geneven 2011-02-28 01:44

Re: Overclock the N900?
 
Quote:

Originally Posted by spl0z (Post 956162)
Hi, i have a question about the warranty when overclocking, so i mean if u do overclock, but something comes up and u want to take your phone back to the store for warranty fix, how do the people in the store find out that it's overclocked, if u flash your phone back to the way it was from the factory and install the nokia kernel again? thanks!

No one that I know of has reported specifially that Nokia has rejected any repair request because the phone had been overclocked.

Someone claimed that something in the phone changes color if it is overclocked, but as I understand it the phones come from Nokia overclocked anyway, so you'd think the color change would always be there.

epitaph 2011-02-28 02:09

Re: Overclock the N900?
 
Quote:

Originally Posted by Maj3stic (Post 956947)
Thanks epitaph i entered that line in xterminal and it accepted it but nothing happened , is that correct? Or should I have seen something occur. My max and min are fixed at 850 for the time being so I will wait and see if it reverts back to 125 as a min. Hopefully this works and it stays fixed at 850. Thanks once more for your response. Also is the xlv profile the optimal profile to fix an oc too? It's the one Jakiman uses but I don't know if that's personal preference or what is recommended

U can verify it with ls. Here is the output of chmod:

chmod 444 /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
ls -lisa /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
-r--r--r-- /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

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