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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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nokian-series is offline nokian-series
2010-04-09 , 08:27
Posts: 169 | Thanked: 41 times | Joined on Apr 2010 @ Portugal
#1881
Anyone tried this (http://www.saunalahti.fi/crailt/kernels.html):

CPU250mhz / 500mhz / 625mhz / 720mhz / 900mhz
DSP: 90mhz / 180mhz / 360mhz/ 400mhz / 430mhz

Here we can ride of that issue of 125 Mhz, when before idle trying to use the autorotation funcion on image galery..if you have attention, it slows down.. (When conected to usb, it uses 500 Mhz, dont slows, obviously..i thing 250 Mhz it wouldnt slows to..)
 
snakekontrol is offline snakekontrol
2010-04-09 , 08:28
Posts: 39 | Thanked: 10 times | Joined on Nov 2009
#1882
Booting allright with letho's ULV kernel, no lags at all, anyone as lucky as I?
 
moerderameise is offline moerderameise
2010-04-09 , 08:37
Posts: 77 | Thanked: 8 times | Joined on Feb 2010
#1883
Originally Posted by snakekontrol View Post
Booting allright with letho's ULV kernel, no lags at all, anyone as lucky as I?
didn't try jet.....
What if I would have some problems with the ulv kernel? can i just put back the one i'm using now and everything is ok again? I know I can, but when i get errors and artifacts oder something with the ulv kernel, will all problems be solved after kernel reflash or are this problems staying until a total reflash? thats what i definately don't want to do, so if all issues can be solved i would try, but if some probs will stay i think i will not try and stay by my 125-900 letho kernel. it works great
 
geneven is offline geneven
2010-04-09 , 08:45
Posts: 5,795 | Thanked: 3,151 times | Joined on Feb 2007 @ Agoura Hills Calif
#1884
Originally Posted by snakekontrol View Post
Booting allright with letho's ULV kernel, no lags at all, anyone as lucky as I?
Sure, me too. All looks ok so far.
 
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jaeezzy is offline jaeezzy
2010-04-09 , 08:47
Posts: 664 | Thanked: 160 times | Joined on Jul 2008 @ Australia
#1885
Ok, somewhere in this thread I read frequency locking to 600 while making call and thought of giving it a try as I've never noticed it before and made a call to my home number and the result is shocking:
-I'm running Lehto's 900-500dsp kernel.
-Device is not running anything and connected to WiFi
-I'm using watch cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq from my laptop.
-Normally its 124800 but as soon as I make a call it goes to 900000 and stays there unless i end the call and the worst this is my home phone can go on ringing for couple minutes easy and now I'm scared of frying my device.

Below is my /etc/pmconfig file:

# Power management configuration file
enable_off_mode 1
sleep_while_idle 1
sr_vdd1_autocomp 0
sr_vdd2_autocomp 0
clocks_off_while_idle 1
voltage_off_while_idle 1
scaling_governor ondemand
scaling_max_freq 600000
scaling_min_freq 125000
sleep_ind 1

Anybody with such result and any fix for this yet? Thanks
 
Netweaver is offline Netweaver
2010-04-09 , 09:54
Posts: 323 | Thanked: 180 times | Joined on Oct 2009 @ Gent, Belgium
#1886
Low voltage kernel is gone ? I can only see the 'normal' voltage ones
No chance to try it anymore ?
Removed to safeguard the innocent n900 from being electron - starved ?
 
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debernardis is offline debernardis
2010-04-09 , 10:12
Posts: 2,142 | Thanked: 2,054 times | Joined on Dec 2006 @ Sicily
#1887
Originally Posted by debernardis View Post
With 800ulv my dmesg continuously spits

[ 6641.996093] WARNING: at arch/arm/mach-omap2/clock34xx.c:443 omap3_noncore_dpll_set_rate+0x28c/0x2dc()

with the following dump.
I can post the full output if needed.
After having read the comments from Titan and Nightfire in the other thread, it seems that the reported warning in the output of dmesg is not worrysome - so I turned again to my fiasco-flasher

I'm presently running the undervolted 800/500/375/250 kernel and so far my device is stable.
__________________
Ernesto de Bernardis
 
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debernardis is offline debernardis
2010-04-09 , 10:14
Posts: 2,142 | Thanked: 2,054 times | Joined on Dec 2006 @ Sicily
#1888
Originally Posted by Netweaver View Post
Low voltage kernel is gone ? I can only see the 'normal' voltage ones
No chance to try it anymore ?
Removed to safeguard the innocent n900 from being electron - starved ?
Apparently it's still in http://www.saunalahti.fi/crailt/zImage-800mhz-ulv in the IPad-safe page
__________________
Ernesto de Bernardis
 
slewis1972 is offline slewis1972
2010-04-09 , 10:43
Posts: 171 | Thanked: 13 times | Joined on Nov 2009
#1889
Guys, can someone do a poll for which formware is better or even a separate post where each new firmware can be discussed. Its getting quite confusing trying to udnerstand from this thread which kernal and speeds are better.
 
titan is offline titan
2010-04-09 , 11:05
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#1890
It's time for a new kernel. This one really does what I want.
It preserves your settings with phone calls and ignores Nokia's CPU locking to >=600MHz during phone calls. Phone calls still work for me but they are now for better for your device than with the stock kernel!

By default the kernel sets the range to [250,600MHz] (even if pmconfig contains 125000/600000).
To set the minimum to 125MHz use 124999, for a maximum of 600MHz use 599000, otherwise use the real frequencies.
I do not recommend 125Mhz, however.
min=125000 and max=600000 are ignored by the kernel.

Installation:
Code:
wget http://maemory.com/N900/overclock/kernel-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/kernel-modules-maemo_2.6.28-maemo20_armel.deb
wget http://maemory.com/N900/overclock/kernel-flasher-maemo_2.6.28-maemo20_armel.deb
dpkg -i kernel-m*
dpkg -i kernel-f*
halt
Letho, could you please upload your arch/arm/mach-omap2/omap3-opp.h so that I can upload
a low voltage kernel with similar settings as yours?
 

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