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Step by step to overclock your N900

 
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Dr. Nitun
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PostPosted: Saturday, 29.May.2010 14:52    Post subject: Step by step to overclock your N900   Reply with quote   

Hello,

I have the latest firmware but my unit is not overclocked anymore. I had the 900mHz kernal.

Can someone tell me the step by step on how to overclock my/our units again? I figure to have this thread as the one-stop to do it (again). I, originally, downloaded the kernal along with flasher 3.5 from a website but it appears that is not the norm anymore? Some have mentioned they are using apps from the repositories to do this instead of manually doing it (downloading kernal then downloading flasher and going into the xterminal to type some commands, etc.)?

If someone can post what to do here again, I would greatly apprciate it...
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ceroberts75
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PostPosted: Sunday, 30.May.2010 01:12    Post subject:   Reply with quote   

you dont even have to do it now with the flasher.

titans power kernal gives you many options.


i would download the power kernel and the cpufrequi.

that makes it easy to do the change to any freq you want.


i have found that the 1.15ghz freq to be less stable on this pr1.2 version
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Michal Jerz
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PostPosted: Sunday, 30.May.2010 15:04    Post subject:   Reply with quote   

Quote:

Can someone tell me the step by step on how to overclock my/our units again?

1. Install "Enhanced Linux Kernel for Power Users" from Extras-Devel
2. Reboot
3. Install CPUfreqUI from Extras-Devel
4. Launch CPUfreqUI and select the max clock frequency of your interest

Done.
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Woj2007
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PostPosted: Sunday, 30.May.2010 19:08    Post subject:   Reply with quote   

what according to your observation is the optimal overclocking frequency? Are there any side-effect issues like battery drain?
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Michal Jerz
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PostPosted: Sunday, 30.May.2010 19:59    Post subject:   Reply with quote   

Quote:

what according to your observation is the optimal overclocking frequency? Are there any side-effect issues like battery drain?

Well, whether there is an impact on battery life depends on usage. If you use "ondemand" or similar, then the device switches to higher CPU clocks only when needed (on high CPU load) and other than that it keeps using similar frequencies as before, i.e. 250 MHz (or 125 MHz) when idle.

So battery life gets shorter only when you give the device some load, i.e. when it uses those higher frequencies.

Optimal overclocking frequency? Hard to tell. I'm fine with 800-850 MHz.
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Dr. Nitun
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PostPosted: Monday, 31.May.2010 03:17    Post subject:   Reply with quote   

Hello,

Thank you for the steps here. It definitely is much simplier than it was before!

From 900mhz, I moved up to 1ghz. In all honesty, can we even tell the difference between say 800mhz from 900mhz or from 900mhz to 1ghz?
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Coramoor
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PostPosted: Monday, 31.May.2010 04:36    Post subject:   Reply with quote   

you can tell the difference in benchmarks such as sunspider javascript benchmark. Is there any noticeable real life difference? I dunno. Knowing I have a 1ghz device still makes me feel cool tho.
Btw. My n900 just scored 7900ms in the sunspider javascript test using a fairly recent version of fennec. My ipad got around 10k(yes, smaller is better). I thought this was pretty cool. The ipad is still much faster when loading real pages tho.
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Woj2007
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PostPosted: Monday, 31.May.2010 08:27    Post subject:   Reply with quote   

I followed the procedure, but Conky still shows 600 MHz as maximum.
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ahiles
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PostPosted: Monday, 31.May.2010 08:55    Post subject:   Reply with quote   

Woj2007 wrote:
I followed the procedure, but Conky still shows 600 MHz as maximum.


And to me it was so. I did as follows:
1. Run X-terminal
2. type 'sudo gainroot'
3. Then run 'cpufrequi "
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stantheboss
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PostPosted: Monday, 31.May.2010 14:25    Post subject:   Reply with quote   

Hi, Guys

After PR1.2 update I have reflashed using flasher 3.5 kernel ONLY to letho's (or titan's) zImage-900mhz not knowing about "Enhanced Linux Kernel for Power Users".

My bad, I know:|
Is there a way to re-flash it back to stock PR1.2 kernel?
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Dr. Nitun
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PostPosted: Monday, 31.May.2010 15:28    Post subject:   Reply with quote   

Hello,

Please follow Michal's suggestion above. Ceroberts 75 initially mentioned this as well. There is no need to run the XTerminal or downloading the flasher, etc. It is very simple:
1. Install "Enhanced Linux Kernel for Power Users" from Extras-Devel
2. Reboot
3. Install CPUfreqUI from Extras-Devel
4. Launch CPUfreqUI and select the max clock frequency of your interest
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dannycamps
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PostPosted: Monday, 31.May.2010 15:29    Post subject:   Reply with quote   

You should not have to flash back from Letho's zimage to stock in order to install Titan's kernel (the Enhanced Linux Kernel). TItan's kernel should simply replace Letho's on install.

If you want to go back to stock from Letho, you will need to flash the zimage-stock kernel image.
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ahiles
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PostPosted: Monday, 31.May.2010 16:36    Post subject:   Reply with quote   

I followed these steps
1. Install "Enhanced Linux Kernel for Power Users" from Extras-Devel
2. Reboot
3. Install CPUfreqUI from Extras-Devel
4. Launch CPUfreqUI and select the max clock frequency of your interest
but after select max freq in CPUfreqUI nothing happened.
Then I run X-terminal, sudo gainroot, cpufrequi, select max freq in CPUfreqUI and everything ОК
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Woj2007
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PostPosted: Monday, 31.May.2010 23:20    Post subject:   Reply with quote   

Whether in CPUfrequi or via X terminal, nothing happens. i select the desired frequency, press 'apply' button, close the window, but when I open cpufrequi again it shows 600 MHz as if nothing was actually applied.
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jcompagner
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PostPosted: Tuesday, 01.Jun.2010 09:20    Post subject:   Reply with quote   

did you first type in "root" ?

but i dont use CPUFrequi at all.. i just do a kernel-config load XXXXX (where XXXX is one of the configs like ideal or lv/ulv)

Mine is related from lv i just tweaked it and copied it over to the home dir.

So when i reboot my phone, i just open the terminal and type "root" and then "kernel-config load powersettings"

way more control over all the settings..
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