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Since this is a popular topic and since MSNBERG requested that i make this, i have decided to make it.
THE GUIDE TO UNDERVOLTING
What you will need:
PREFERABLY the application Tegrak OVERCLOCK PAID! can also use set cpu
TEGRAK
LOAD THE OVERCLOCK MODULE
go into the "TWEAKS" section and be sure to select DEADLINE as your scheduler!!!
you will see the option "OPTIMIZATION" go there
now you will see 5 levels to customize
ONLY LEVEL 0 CAN YOU CUSTOMIZE EVERYTHING
Now if you only want to undervolt with no overclock here is the chart you need to use ON GINGERBREAD:
UNDERVOLT SETTINGS
level0 - 1000 - 1155 - 1065 -------this level can change frequency but volts need to change as well
level1 - 800 - 1040 - 1035
level2 - 400 - 955 - 960
level3 - 200 - 835 - 950
level4 - 100 - 825 - 930
once you enter these in you can go to tegraks main menu and go into "PROFILE" and you can save your current settings or choose previous ones.
Here are some overclock values you can use for level 0
LEVEL 0 1100 1100 1090
LEVEL 0 1200 1195 1095
LEVEL 0 1300 1295 1115
LEVEL 0 1400 1315 1125
LEVEL 0 1500 1375-85 1150
LEVEL 0 1600 1400 1175-1200
***THIS WILL BE UPDATED WITH MORE INFO SOON
In my best Mr. Burns voice: Excellent!
Always wanted a undervolting guide. Nice!
:C my phone reboots with these undervolt values for some reason. I'm running Valhalla 1.1(haven't has the time to update and don't have wifi so...) and adrenaline shot X. I also have stability checker off so I'm sure that's not the issue. Its fine at first but then rebootes once I start mulititasking like listening to music, texting and getting on Facebook at the same time. Seems to work fine for everyone else so I don't get what's going on
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icy56 said:
:C my phone reboots with these undervolt values for some reason. I'm running Valhalla 1.1(haven't has the time to update and don't have wifi so...) and adrenaline shot X. I also have stability checker off so I'm sure that's not the issue. Its fine at first but then rebootes once I start mulititasking like listening to music, texting and getting on Facebook at the same time. Seems to work fine for everyone else so I don't get what's going on
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Click to expand...
Click to collapse
What governor and scheduler.are.you using
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I'm using ondemand as the governor. I have no idea what a scheduler is.
*edit*
The io scheduler? Well its set to cfq.
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Thanks a lot for this. I have been looking forward to this guide! Awesome work again Dsexton
icy56 said:
I'm using ondemand as the governor. I have no idea what a scheduler is.
*edit*
The io scheduler? Well its set to cfq.
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Click to expand...
Click to collapse
Change cfq to deadline
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jager555 said:
Change cfq to deadline
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Click to expand...
Click to collapse
THANK YOU!!!! its finnaly working. Haven't had a single reboot yet. You sir just saved me a trip to T-Mobile. I thought there was something wrong with my phone since I was the only one getting that issue.
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jager555 said:
Change cfq to deadline
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Click to expand...
Click to collapse
Thats what I was going to say, good job
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thanks dexter like always!!
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Hi guys,
Sorry for the rookey questions, but :
1. Do I need to install TegraK kernel ? If so, before or after installing TegraK overclock ?
2. Will TegraK OC free version do, or i need the paid version ? what's the difference ?
3. ICY56 - I'm having the exact configuration you have (Valhalla 1.1 and Adrenaline ShotX) can you please explain what changes you noticed regarding battery consumption, and doesn't it affect your phone responsiveness, stability and performance ?
Thanks,
Itzik.
Answers
1) Tegrak will work fine with valhalla, most (if not every) custom rom has the needed kernel already.
2) You need the paid version because free version only allows overclock up to 1.3 you cant adjust anything else.
3) I can't answer as I'm not set up the same, but from my understanding you shouldn't see any negative affects, just increased battery life.
Every time I try to undervolt my phone. It reboots constantly. Even with ICBINB KJ1. Scheduler is set to deadline and governor is set to ondemand. What am I doing wrong?
itzik2sh said:
Hi guys,
3. ICY56 - I'm having the exact configuration you have (Valhalla 1.1 and Adrenaline ShotX) can you please explain what changes you noticed regarding battery consumption, and doesn't it affect your phone responsiveness, stability and performance ?
Thanks,
Itzik.
Click to expand...
Click to collapse
Well I haven't noticed a decrease in performance and stability. The phone actually feels the exact same. As for bettery life, I can't really comment on that yet since I'm in the process of recalibrating my battery and I haven't been on UV long enough to say but so far battery life seems to be a little better
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Nice work... tried and works .... 1600mhz looks like unstable in phone....
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wizardslovak said:
Nice work... tried and works .... 1600mhz looks like unstable in phone....
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Click to expand...
Click to collapse
It can be stable you just need to up voltages a lil more
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dsexton702 said:
It can be stable you just need to up voltages a lil more
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Click to expand...
Click to collapse
Well ill play with it more.... usually ill get restarts within few seconds of setting up new parms... thx again...
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Even if I increase voltage it still freezes and then restarts phone @ 1600mhz
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I've had 1664 mhz before stable. It can ne done, every phone will be different with what voltages work. experiment a little. But I wouldn't go to high, don't want a $500 paperweight.
@ 1.3 GHz, this phone its rock solid, so anything higher is over kill imo.
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Anyone have problems regarding i9003 overclock at 200mhz? , no matter i do i cant put my fone in 200mhz zone, whether be it, deep sleep or manually using set cpu. my fone is rooted, deodexed, UC kernel v8-fixed and xxkpq. Thks.
**UNDERCLOCK!, for de overclock in this thread, should be underclock*, i guess im carried off lols.
Some phones just cannot haandle the underclock and will freeze.
Edit: sorry didn't see tour question properly, try reflashing the kernel
Cheers
Sent from my GT-i9003 powered by MIUI
my fone does not freeze, it jus wont underclock
iTzSeis said:
my fone does not freeze, it jus wont underclock
Click to expand...
Click to collapse
Have you tried reflashing the kernel? Were you accidentally choosing the Max frequency to unferclock instead of the min?
Cheers
Sent from my GT-i9003 powered by MIUI
yupp i did try to reflash i can control my freq to either 200 300 600 800 1200mhz, but i used cpu spy and found out 200mhz is always not 'in use' .
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iTzSeis said:
yupp i did try to reflash i can control my freq to either 200 300 600 800 1200mhz, but i used cpu spy and found out 200mhz is always not 'in use' .
Sent from my GT-I9003 using XDA App
Click to expand...
Click to collapse
Well same for me, I'm on miui using 120-1350mhz, and so far the cCPU hasn't touched 120mhz. Maybe if you force it with a profile, it will go to that frequency, but be warned to not set on boot, as having such low frequency could result in your phone freezing. Pull the batt if it freeze
Cheers
Sent from my GT-i9003 powered by MIUI
it hasnt freeze so far so i guess we r on de same boat den
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Ok found this in galaxy 3 section, but this is sopposed to work on any multi core phones. Thought I'd share this with u all since I came from g2x. All credit goes to Eugene 373 for making this script. Here its the op
http://forum.xda-developers.com/showthread.php?t=1745132
Sent from my SGH-T999 using xda app-developers app.
Sorry if link isn't good but haven't made the 10 post yet. U can find this in the t-mobile section of the Samsung galaxy s3. Hope it works for u. Plz post results.
There is an apk in the op. U can just use that. Makes life a lot easier.
Sent from my SGH-T999 using xda app-developers app
Isn't this the same if we lower our frequency to minimum when the screen goes off. I am sure only cpu0 is used if its below 750mhz or so.
double post, you just posted this in the development section as well
http://forum.xda-developers.com/showthread.php?t=1748256
Yea I couldn't figure out how to delete one of the post.. mod can plz delete. Sorry guys
Sent from my SGH-T999 using xda app-developers app
The G2x has no use for these quirks. Nvidia has some special battery saving things in the phone. That's why our phone does not use CPU governors. Just use the phone as is. You can over clock but don't set CPU profiles. The nvidia chip does everything itself.
Sent from my LG-P999 using Tapatalk 2
zoppp said:
The G2x has no use for these quirks. Nvidia has some special battery saving things in the phone. That's why our phone does not use CPU governors. Just use the phone as is. You can over clock but don't set CPU profiles. The nvidia chip does everything itself.
Sent from my LG-P999 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for the info, I never knew that, coming from other Android phones. I was wondering why no kernel had CPU governor options enabled.
zoppp said:
The G2x has no use for these quirks. Nvidia has some special battery saving things in the phone. That's why our phone does not use CPU governors. Just use the phone as is. You can over clock but don't set CPU profiles. The nvidia chip does everything itself.
Sent from my LG-P999 using Tapatalk 2
Click to expand...
Click to collapse
We can turn off the core though. Faux's latest cm7 kernel has it.
mormoney said:
There is an apk in the op. U can just use that. Makes life a lot easier.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
do u have a link for the apk for the cpu1 disabler?
shortkidd96 said:
do u have a link for the apk for the cpu1 disabler?
Click to expand...
Click to collapse
sorry man but the apk was takin down for a bit.. somthing about the PID making the app shutdown after being off for so long. script still works, and is recommended for now. ill post when apk is back up
thx also what are the permissions for the script cause im using root explorer
which kernels do this already?
I am pretty sure that I was running on only one core when on Trinity ELP when setting it at 750 MHz and lower. Also, the newer Faux 050b6 through 050b9 go to a single core limited to no more than 503 MHz whenever the screen is off.
Is anyone aware if the Trinity T15 shuts down the second core ever?
How about the stock LG or standard CM kernel?
How about Faux's kernels for stock based ROM's? I have recently been on Kwes and Buru stock 2.3.4 ROM's using Faux 014b2 at stock voltage. If I keep the MHz low, I swear my battery performance is better than it ever was using undervolted ELP on CM7 based ROM's.
I just did 35 hours :victory: of moderate usage (about 2 hours talk, 3 hours wifi web, 1 hour text) and still had 45% left in the tank! - With the stock battery that's nearly a year old now...:good:
hairycheapo said:
I am pretty sure that I was running on only one core when on Trinity ELP when setting it at 750 MHz and lower. Also, the newer Faux 050b6 through 050b9 go to a single core limited to no more than 503 MHz whenever the screen is off.
Is anyone aware if the Trinity T15 shuts down the second core ever?
How about the stock LG or standard CM kernel?
How about Faux's kernels for stock based ROM's? I have recently been on Kwes and Buru stock 2.3.4 ROM's using Faux 014b2 at stock voltage. If I keep the MHz low, I swear my battery performance is better than it ever was using undervolted ELP on CM7 based ROM's.
I just did 35 hours :victory: of moderate usage (about 2 hours talk, 3 hours wifi web, 1 hour text) and still had 45% left in the tank! - With the stock battery that's nearly a year old now...:good:
Click to expand...
Click to collapse
Yeah, stock LG 2.3.4 had amazing battery life for me too.
What's the link for Fauxs kernels. I can't find it...damn beer. :beer:
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http://faux.androidro.ms/
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http://www20.zippyshare.com/v/15081794/file.html apk back up if any intrested
mormoney said:
http://www20.zippyshare.com/v/15081794/file.html apk back up if any intrested
Click to expand...
Click to collapse
thanks!!!:highfive:
http://www18.zippyshare.com/v/21371263/file.html
Apk update.... bunch of fixes, now puts one cpu down when on a call and more. Check out original thread for changelog
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I guess you can consider this thread part survey and part for my knowledge so I know how far I can push this phone. I am at 1728MHz max with the interactive governor and cfq scheduler. Not sure if I'm going to do any undervolting, I can get through the day with about 40% remaining, and I have profiles set up for low battery and such. I am running CM10 with the 747 (I think that's what its called..) kernel and can push it to 2.1GHz. Is it stable at that high of a clockspeed? I can assume it turns your pretty Galaxy S3 into a convenient portable stove
By the way, sorry if this is the wrong section.
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It really depends on your phone, I had mine at 2100 and it was stable. However it can very I had,a, Droid charge that ran the 1440 no problem, had it replaced and the new one could go above 1300 without hot boots. Some phones just hold up better
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kintwofan said:
It really depends on your phone, I had mine at 2100 and it was stable. However it can very I had,a, Droid charge that ran the 1440 no problem, had it replaced and the new one could go above 1300 without hot boots. Some phones just hold up better
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Click to expand...
Click to collapse
Stock. I've had it clocked to 1.9. But can't tell a difference with real day to day function except for worse battery drain and phone hotter.
Sent from a SYNERGIZED GalaxySIII
I have run the KT747 AOSP kernel at 2.1 ghz for a day or more and had no noticeable increase in heat, or decrease in battery life. (lulzactive or smartass v2 with either cfq or sio scheduler, no voltage changes in KT tweaker) I also saw very little or no gain in real world performance increase, and the benchmarking apps seemed to back that up. Typically run mine at 1.809 currently. Every phone cpu is different in terms of top speed, and voltage settings. Best thing to do, is to test them and see what works best for you. These 2 links, courtesy of the Ktoonez thread, provide some great info on kernel governor and scheduler settings. Given the number of options in KT Tweaker, these helped me a great deal in terms of making changes.
http://forum.xda-developers.com/showthread.php?t=1687578
http://forum.xda-developers.com/showthread.php?t=1369817
I've tried 1998MHz and as you said, it didn't yield much. I think I screwed something up, because now oc settings refuse to stick (resets itself to 1512) and short/long benches are not as great.
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xrawritsjack said:
I've tried 1998MHz and as you said, it didn't yield much. I think I screwed something up, because now oc settings refuse to stick (resets itself to 1512) and short/long benches are not as great.
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Click to expand...
Click to collapse
Are you on CleanKernel by chance?
I've looked and searched everywhere but I can't find anything like this. On all of the JB roms, all of a sudden, my CPU frequency sits at the highest speed and won't move no matter what governor I use. Is there any way to solve this, I'm really at a loss. I installed CPU spy and it's showing that deep sleep is not used and that only 1200 MHz(the highest CPU setting I'm using) is being used. Help please. Thanks in advance.
if a reboot doesn't fix it, you need to wipe and reflash
qkster said:
if a reboot doesn't fix it, you need to wipe and reflash
Click to expand...
Click to collapse
Yeah, tried that already, a few times. I think it has something to do with my sd card. I'm gonna format it and see what happens.
So..I went all the way back to stock, and came back to JB and still experiencing the same problem. When I flash a JB rom, the CPU frequency gets stuck at the highest frequency until I select a different governor and reselect the one I want to use. Any help would be appreciated.
which roms have you tested? and are you using nstool to adjust your governors and schedulers?
-illest- said:
which roms have you tested? and are you using nstool to adjust your governors and schedulers?
Click to expand...
Click to collapse
I've tested avatar, Beanstalk(my daily driver), Cyber...
Nd yes, I am using the built in performance menu, but it has the same settings as nstools
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Are you using NSTools along with the built in performance menu? I had the same problem on Beanstalk with the SmartassV2 governor where my cpu would stick at 1200 mHz, but once i removed NSTools, smartass worked fine. perhaps try disabling or removing nstools?
Oh okay, I see what you are saying. I really like BLN, so you just don't use bln anymore?
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well try and see if it works. if your using beanstalk, then you can just use the BLN control - free app that scott has included as an addon. this app will enable BLN with timeout. you just can't change the blink speed with this app.
Well I disabled nstools and everything seems to be back in order. I'll report back if I see something else.
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