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Poll: Do you think its possible to overclock the N900?!
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Do you think its possible to overclock the N900?!

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firstknight is offline firstknight
2010-04-07 , 16:45
Posts: 143 | Thanked: 4 times | Joined on Jan 2010
#1561
Originally Posted by psrkn View Post
From a couple posts up, there is a post from Titan and said that another observation: The dmse daemon seems to overwrite the max. freq. in the kernel with the value
from /etc/pmconfig every hour or so.
does that mean tat if i dun change on the pmconfig i will face the change back to 600 at any given time my phone check pmconfig?

anyway to work around?
 
mikhmv is offline mikhmv
2010-04-07 , 16:49
Posts: 207 | Thanked: 119 times | Joined on Nov 2009 @ Pittsburgh, PA, USA
#1562
I run >24h at 1000Hz. It is great.

For safe testing with /etc/pmconfig
I did following:
1. cp /etc/pmconfig /etc/pmconfig.bak
2. echo "cp -r /etc/pmconfig.bak /etc/pmconfig" >> /bootmenu.sh
3. edit /etc/pmconfig
4. reboot with closed keyboard. If device will not boot reboot with open keyboard....

rebooting with open keyboard will restore /etc/pmconfig from /etc/pmconfig.bak
 

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UNderworld is offline UNderworld
2010-04-07 , 16:57
Posts: 362 | Thanked: 113 times | Joined on Feb 2010
#1563
12 hours idle... 3g, no internet, 1 call (didnt answer)
10% battery, 50% to 40%...

currently on 900/500dsp ..

if i do
echo 930000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

would it work if I increase it in 20mhz? or 10??
for e.g 930000 then 950000 then 960000 up to 1ghz...??

I know its up to my phone, but is the command right?

When I restart my phone, will it come back to 900mhz? (currently 900/500 lehto's one)??? thanks
 
PhonoN900 is offline PhonoN900
2010-04-07 , 17:00
Posts: 23 | Thanked: 17 times | Joined on Dec 2009
#1564
Originally Posted by firstknight View Post
does that mean tat if i dun change on the pmconfig i will face the change back to 600 at any given time my phone check pmconfig?

anyway to work around?
I've found a fairly simple workaround...

Install Desktop Command Execution Widget, create a command with the propper parameters (see pg 148 of this thread), and set the update interval to 30 minutes.

I just did this, and will keep an eye on my clock speed to see if that will circumvent the issue (it should, in theory). The other nice thing this widget does is run the command on startup...

Just food for thought.

Cheers,
Phono
 
rizbert is offline rizbert
2010-04-07 , 17:03
Posts: 22 | Thanked: 5 times | Joined on Nov 2009 @ Oban, UK
#1565
Been trying to finish reading this thread before posting...only been a few days!
Overclocked using the fiasco image of lehto's 800 image..gone well so far, lovely smooth & quick reponse although I have had the warnings come up from dmesg. Plus my phone info is still intact...Won't go any higher on overclock...just see how this goes.
 

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titan is offline titan
2010-04-07 , 17:05
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#1566
Originally Posted by Matan View Post
You can try using my patch - http://my.arava.co.il/~matan/770/n900/freqs.diff
It reduces the voltage for the frequencies 550 and 600 to OPP3 level (the one used for 500 in Nokia's kernel, and uses OPP4 level for 720-1000 (the same level as originally used for 550). Highest level (OPP5) which is used for 600 in Nokia's kernel, is not used at all in my patch. Of course, the result will be lower maximum frequency in some CPUs, but my is stable at 1000MHz even at this lower voltage.
EDIT: this post is obsolete. go to http://wiki.maemo.org/Kernel_Power

I have uploaded experimental undervoltage kernels based on your suggestion
http://maemory.com/N900/overclock/undervolt/
but it's not stable on my device. Be prepared to reflash!
Code:
wget http://maemory.com/N900/overclock/undervolt/kernel-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/undervolt/kernel-modules-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/undervolt/kernel-flasher-maemo_2.6.28-maemo20_armel.deb
dpkg -i kernel-m*
dpkg -i kernel-f*
halt
Last edited by titan; 2010-05-15 at 13:02.
 

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UNderworld is offline UNderworld
2010-04-07 , 17:12
Posts: 362 | Thanked: 113 times | Joined on Feb 2010
#1567
there DEFINITELY IS a damn noticeable improvement from 900 to 1ghz.....
 
Matan is offline Matan
2010-04-07 , 17:29
Posts: 1,224 | Thanked: 1,763 times | Joined on Jul 2007
#1568
Originally Posted by titan View Post
I have uploaded experimental undervoltage kernels based on your suggestion
http://maemory.com/N900/overclock/undervolt/
but it's not stable on my device. Be prepared to reflash!
Even at 600Mhz is it unstable? On the Pandora, the default is 600MHz at OPP3, and they don't report any issues (they do have very few devices, though).
__________________
My repository

"N900 community support for the MeeGo-Harmattan" Is the new "Mer is Fremantle for N810".

No more Nokia devices for me.
 

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AsiQue is offline AsiQue
2010-04-07 , 17:38
Posts: 19 | Thanked: 3 times | Joined on Sep 2007
#1569
guys
i use titans maemo19 kernel and in pmconfig i have maxfreq=800000
when i start my nokia everything is ok and cpufreq/scalingmax shows 800000
but after some time (i suspect that charging is involved) the max freq is reset back to 600000

has anyone encautered that??

tnx
asique
 
titan is offline titan
2010-04-07 , 17:40
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#1570
Originally Posted by Matan View Post
Even at 600Mhz is it unstable? On the Pandora, the default is 600MHz at OPP3, and they don't report any issues (they do have very few devices, though).
yes, with 125-600MHz it crashed after a few minutes with a garbled screen.
 
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