yashsingh1/xdaforums huggingface dataset:
[Atrix 4G General] Wond3r:
Just went to the market and apparently I have the latest one installed. Why do I not see any voltage tab? Also I cant choose and governors

I have one of faux kernels installed
[Atrix 4G General] madquack:
http://xdaforums.com/showthread.php?t=505419
[Atrix 4G General] ihash082:
50

50

50

50

75

100

125

So far so good, I noticed the top four won't go past 50 without rebooting. I recommend undervolting from the bottom up by increments of 25 -- don't just copy a profile posted on this thread since every phone is different when it comes to this.
[Atrix 4G General] stevendeb25:
Anyone tried voltage control? Its an xda app can be found on the market too.

How to check if voltage is beening controlled?
[Atrix 4G General] Phalanx7621:
So far as I know, the voltages can't be undervolted by more than 100 per "jump" to the next number up. So....a good example is from bottom up, using -150, -150, -100, -50, -50, -25, -25
[Atrix 4G General] iRobby:
That's for galaxy s devices only?
[Atrix 4G General] rickleasa:
-50 here sofar so good
[Atrix 4G General] stevendeb25:
Seems to be working on Atrix tho. Can use sliders and set as boot. And will reboot phone if set lower etc

Using CPU spy
[Atrix 4G General] krkeegan:
I have spent some time testing out voltages. To test each setting I used the following apps:

SetCPU - Stress Test

Quandrant

StabilityTest v. 2.11 - This one is nice because in theory it iteratively steps through each CPU frequency over and over again. Quadrant and SetCPU really just max out the CPU so the most likely test your maximum cpu frequency while not really testing the rest.

And finally, regular everyday usage - I have to be honest, a number of tests just failed instantly and it was obvious, but a number of voltages survived an hour or more of stress testing, but would later fail while doing something mundane. I had a number of crashes soon after ending a stress test. This leads me to the conclusion that testing the voltages is not all about stress, but likely about rapid frequency changes as well.

Anyways, now to the conclusion. As always, each phone is different so these exact settings likely will not work for you:

Frequency Change in Voltage Effective Voltage % Change
1100 -100* 1000 9%
1000 -60* 940 6%
912 -50* 900 5%
750 -90* 810 10%
608 -140 710 16%
456 -190 610 24%
216 -260 510 34%
* These settings were heavily tested and are near the maximum for my phone. I really wanted to get the setting on 750 down another 10mV, but it just wouldn't go. I suspect the frequencies below it would go even lower if not for the 100mV limitation between steps.

I will of course update this if I have any issues, but over the past few days things have been very smooth. I have also noticed that my phone does not seem to be getting nearly as warm as it did before under a heavy load.

As you can see, the average percentage change ends up being pretty significant. I am not sure how much this is saving me on battery life, but it certainly can't hurt.
[Atrix 4G General] PakaPakaxz:
Thank you all for your sharing your stable voltages settings :)

My settings:

-50

-50

-50

-50

-100

-150

-200

faux123 0.1.7 on Alien #4 , getting great battery performance.

Over night with WIFI on , only 5%~ drain after 9~ hours !! :)
[Atrix 4G General] CancerJesus:
Alright, lets see some 1.3GHz undervolting settings.
[Atrix 4G General] Jtu89:
Undervolt 0.17 Faux

On 0.17, my undervolt values are:

From 1.1 Ghz to 216 MHz

------------------------

1000 mV

950

900

825

725

625

525
[Atrix 4G General] maphisto101:
On 0.19

Seems stable.

I'm 2nd score on Aututu with 6037

And 4040 on quadrant .
[Atrix 4G General] xUmaRix:
I tested your value.im also using same kernel.however my phone hang n reboot
[Atrix 4G General] maphisto101:
i'm on CM7 pre beta 3.

mb=d00
[Atrix 4G General] Jtu89:
Faux 0.19

On 0.19, I get:

From 1.3 GHz to 216 MHz

1200mV

1050

1000

950

850

750
[Atrix 4G General] Byrd San:
UV CM7 Pre-Beta 3 @ 1.3 Ghz w/ Faux's 0.1.9 Kernel:
[Atrix 4G General] indieman91:
+1 on alien rom. Ran stress test for a few minutes. Everything is stable. Less heat from battery! It's all good

Sent from my alien atrix with the xda premium app
[Atrix 4G General] xUmaRix:
Mine rebooted after apply those value.im on alien #4 with 0.1.9 faux kernel
[Atrix 4G General] Wond3r:
I;m on faux 1.9 and each time I click on the voltages tab in setcpu, I get a force close
[Atrix 4G General] Alcapone263:
Go into application manager and clear setcpu's data. If that didn't work try to reinstall it.
[Atrix 4G General] mraxido:
Mine is

1300 -100

1200 -100

1100 -100

1000 -75

800 -75

456 -175

216 -250
[Atrix 4G General] DrunkFuX666:
Maybe a wee bit off topic but along with the undervolting, you set the profiles as well for screen off and other things right... what exactly should you set the PRIORITY level to in each profile... as in how exactly does that work ...?? Can someone say a few words about this...??

My undervolt is

100

125

100

50

50

150

250

But my range is only kept from 215 till 1000... can't really risk losing more battery with it running at 1.3... put on faux 1.9 for stability more than speed...
[Atrix 4G General] Alcapone263:
The priorities decide which profile works over the other. JusT set them based on which profile you think is more important. I have mine to overclock to 1.3 only while charging, but to drop to 1.0 when temps get above 50 celsius. Even when charging.
[Atrix 4G General] ChaosMinionX:
Priority is merely a setting that does determines which profile is used.

Profile A(Screen Off) and B(battery < 15%)

A has Priority 100

B has Priority 50

when the screen is off profile B will be ignored.

Now say its A(Screen Off) and B(battery < 15%) and C(In Call)

A has Priority 75

B has Priority 50

C has Priority 100

C will now overrule the other 2 profiles while in a call, and even when the screen is turned off.

Get it?
[Atrix 4G General] mraxido:
Faux kernel v 0.1.9 1.3ghz
[Atrix 4G General] mraxido:
Cm7 prebeta 4 fauxs kernel 1.9 OC UVd
[Atrix 4G General] minooch:
Not so sure about that

I tested it by setting the following:

1300 - 25

1200 - 25

1100 - 25

1000 - 500

I then locked in 1000 as a constant speed - within seconds the phone restarted - so obviously my step from 25 to 500 worked (sorta)
[Atrix 4G General] yeahmann:
faux123 1.9

1300 to 216:

200

175

150

100

100

100

150

Yeah I got 1300MHz at 1100mV! Hope it holds.

I can set 800MHz to 400mV which can't be right. So I'm guessing there's a 100mV max limit between steppings. That's not a 100mV change from the default between steppings but a 100mV absolute difference between steppings. E.g., 1100MHz@1000mV to 1000MHz@900mV is okay but not 1100MHz@1000mV to 1000MHz@800mV. At least that's what I gather.
[Atrix 4G General] pukemon:
100 mv between steps. Anything more than 100 mv between steps does not uv to what you set it at.

Btw my uv's from faux's 1.6 are...

1000mhz -55

912mhz -80

750mhz -80

608mhz -155

456mhz -155

216mhz -180

I might be able to get a little more but these have been stable for a week.

I voided my warranty.
[Atrix 4G General] BlackX777:
Why the original has 8 steps and the OC only 7?
[Atrix 4G General] pukemon:
How do you think he got the oc's? Had to sacrifice the low frequencies. Those with 1.3. Oc must be getting terrible battery life.

I voided my warranty and your mum.
[Atrix 4G General] BlackX777:
Can someone post StabilityTest v. 2.11.apk

2.2 doesn't work with scaling anymore.
[Atrix 4G General] OpsRJ:
I dont know why, but on the first screen of setCpu i cant select a scaling option is like the field is disable. Is there a way to fix it?
[Atrix 4G General] BlackX777:
Faux 1.7

MHz - mV

1100 - 1000

1000 - 950

912 - 900

750 - 800

608 - 700

456 - 600

216 - 500

I have stick min max with SetCPU from 750 to 216 and ran StabilityTest 2.2. From 912 it won't stick always 1100.
[Atrix 4G General] yeahmann:
OK my final 100% stable settings:

faux123 1.9

1300 to 216:

150

150

100

100

100

100

150
[Atrix 4G General] Kraize:
Damn. Mine keeps crashing now after CM7 loads. How do I reset the voltage settings without having to reinstall CM7 all over again?
[Atrix 4G General] pukemon:
Flash another rom?

I voided my warranty and your mum.
[Atrix 4G General] Kraize:
Lol. I would rather avoid that. I just cleared my cache and that seemed to do the trick.
[Atrix 4G General] Uhuhu:
Hi guys.. I've been undervolting the CyanogenMod7 Beta and got great results...

As follow:

Battery Life: http://androidurbano.files.wordpress.com/2011/09/screenshot-1316615108395.png

Profiles: http://androidurbano.files.wordpress.com/2011/09/screenshot-1316575027197.png

Voltages: http://androidurbano.files.wordpress.com/2011/09/screenshot-1316575033051.png?w=168&h=300

Now I'm using Home Base and I was testing: http://androidurbano.files.wordpress.com/2011/09/1316702781786.png

The thing is... It's too hot and it's draining the battery like it's thirsty for energy.

Next test:

1300 -100

1200 -100

1100 -100

1000 -100

800 -100

456 -250

216 -300

I know that it's not possible to step higher than 100, but I'll wait and see...

If I step higher than 100 on the 1ghz+ area I'll get reboots.
[Atrix 4G General] PakaPakaxz:
CM7 beta - stock kernel 1100mhz :

-50

-50

-50

-50

-100

-150

-200

Stable for long time .... a week i think.
[Atrix 4G General] pukemon:
Try adding some -5 uv's to those and see if you can squeeze some more.

I voided my warranty and your mum.
[Atrix 4G General] BlackX777:
Faux123 2.0 Enhanced Stock Kernel + Ailen4

MHz - mV - drain

1000 950 -50

912 900 -50

750 800 -100

608 700 -150

456 600 -200

312 500 -275

216 400 -350

I have set all clockrates with SetCPU from 750 to 216 and Test each with StabilityTest 2.3. 912 won't stick it always goes up to 1000.

Insane Battery live.
[Atrix 4G General] Uhuhu:
New kernel, new post...

Home Base ----> Version #5 Mega Base 4.0 ( Favorite Parts-custom rom) - Deblurred: OC 4.5.9.1 EXT4 w/ fauxs 1.3 ghz 0.2.0 kernel.

http://img821.imageshack.us/img821/8978/1316881831566.png

PS: No undervolting... Just some SetCPU profiles...
[Atrix 4G General] yeahmann:
faux's 0.2 1.3 GHz:

1300 -205

1200 -160

1100 -100

1000 -100

800 -100

456 -100

216 -150

Been stable for a few days. Can't wait for faux's future kernels. 1.5 GHZ looks doable for me and 216 MHz should undervolt a lot more when faux adds more steps.
[Atrix 4G General] Twist79:
Faux123 2.0 Enhanced Stock Kernel on Aura

1000= -50

912= -50

750= -50

608= -100

456= -150

312= -225

216= -300
[Atrix 4G General] Wirmpolter:
faux 123 .2.0 1.3 kernel running cm7 beta

see attached screenshots....running mint for 3 days now...anything past -75 on 800 and 1000 caused random reboots and freezes

also my tegrapart is d00
[Atrix 4G General] skovbakke:
Cm7 Faux 2.0 enhanced stock running stable. One reboot in three days...

Sweet!
[Atrix 4G General] Jtu89:
The in-between steppings have to be at most 100mV difference.
[Atrix 4G General] skovbakke:
So they are in mine, right?

-50

-50

-75

-175

-275

-375

-475

Seems pretty extreme, but it's perfectly stable.
[Atrix 4G General] yeahmann:
No. 100 mV difference between steps. E.g., if 1.1 GHz is at 1000 mV then 1.0 GHz can be no lower than 900 mV.
[Atrix 4G General] czausmouse:
Why do you guys undervolt? It causes over heats and it drains battery
[Atrix 4G General] youliang:
i believe u mean the opposite.
[Atrix 4G General] ghost_og:
So is the 100 rule for both uV's steps and final mV's? I just want to make sure I understand things correctly. Actual uV's can be over 100 as long the difference between steps is no more than 100 (i.e. -50 to -150), and final mV settings are with 100 of each other?

I'm running faux's enhanced stock 0.2.0 kernel and running the following:

-50

-50

-50

-50

-100

-150

-200

Haven't had a single reboot and battery life seems to be better so far. Currently at 12hrs and still above 60%. Sorry, no 1% for me, still haven't deodexed.
[Atrix 4G General] czausmouse:
If you lower the voltage you need more current. That causes battery drain.
[Atrix 4G General] yeahmann:
Why do you need more current? Does the universe demand a constant wattage? What happens if you don't increase the current? Do the dead rise from their graves?
[Atrix 4G General] mraxido:
Works perfect
[Atrix 4G General] stovie75:
LOL! Wow... czausmouse electrical engineering fail.. P=IV and V=IR -> I = V/R. So the Power used is P=v^2/R. The processor (silicon/transistors) has some fixed minimal resistance (when the transistors are all working). And since, as yeahmann stated, we don't have zombies running amongst us, that fixed minimal lowest resistance will produce a high maximal current which will be directly proportional to the input voltage (via V=IR). so that last equation states the actual power used is directly proportional to the square of the voltage... so decrease the voltage means decrease the power... or maybe I am taking crazy pills.

Back to lurking...
[Atrix 4G General] xAlex79:
Currently testing the 1.3 OC .23 kernel from Faux.

1.3 @1100mv

1.2 @1100mv

1.1 @1050mv

1.0 @950mv

0.8 @850mv

0.5 @750mv

0.2 @650mv

I have not had a reboot in 24hours and I also ran multiple cpu benchmarks to test stability @1.3

Next steps will be to see how low I can push 1.2 and 1.1 but I know my 1.0 will not be stable under load at less than 950mv.

To test lower clocks I limit the clock at that speed in setcpu (ie: I set max clock at 1.2 and set a profile with battery < 1% max clock 1.2) and then run stress tests and benches and leave my phone with this running for 24 hours and see if I get a reboot. If I get even one reboot i push the voltage up 25 mv and repeat until I get no reboots for 24 hours.

I also changed from 1.45 to 1.3 simple because 1.45 is about 10% faster than 1.3 and it's not worth the heat and higher mv just to get 10% increase in speed. Whereas 1.0 to 1.3 literally doubles performance.

Out of curiosity how to you test and make sure you have stable voltages?

Also when you guys share your results it would be a lot more clear if you stated the MV you are running each frequency at rather than just posting a bunch of minus values one after another because not all kernels have the same steps.
[Atrix 4G General] lur3nj14:
Faux 023 1.0 GHz on CM7 stable, weekly and Neutrino

1000 MHz -50 950mV

912 MHz -20 930mV

750 MHz -70 830mV

608 MHz -120 730mV

456 MHz -170 630mV

312 MHz -245 530mV

216 MHz -320 430mV
[Atrix 4G General] Cusa:
I've been trying to see how far down I can take the voltages and it seems this is as low as I can get them with my phone without randomly rebooting. I'm really curious if somebody else has even lower values and it works fine for them without reboots. I'm using faux123 v2.3 enhanced stock kernel 1ghz.

1000 MHz -75

912 MHz -50

750 MHz -100

608 MHz -150

456 MHz -200

312 MHz -275

216 MHz -350
[Atrix 4G General] Neroga:
I'm currently using Wet Dream 1.4.3 full blur with faux123 1Ghz v24 kernel and these are my two setting via Pimp My CPU:

Default

1000Mhz / 975mV

912Mhz / 950mV - no change

750Mhz / 875mV

608Mhz / 775mV

456Mhz / 675mV

312Mhz / 575mV

216Mhz / 500mV

Screen Off

1000Mhz / 950mV

912Mhz / 925mV

750Mhz / 850mV

608Mhz / 750mV

456Mhz / 650mV

312Mhz / 555mV

216Mhz / 500mV

I'm fairly new to undervolting but I have been playing around with the Atrix since early September and with these values I've never had a problem with my phone rebooting.

I'm just wondering what you all think is the best UV app out there that allows you to go lower than -250/
[Atrix 4G General] xateeq:
I cannot undervolt at all, at first i could but after flashing weekly4 i was unable to do it, now no rom let me do even minor uv. But battery life is good tho
[Atrix 4G General] Neroga:
Are you using the stock kernel or one of Clemyn's or Faux's?
[Atrix 4G General] Cusa:
I lowered my values a bit more and it seems stable I think.

1000 MHz/920

912 MHz/900

750 MHz/800

608 MHz/700

456 MHz/600

312 MHz/500

216 MHz/400
[Atrix 4G General] parkodrive:
Currently using Wet Dream v1.4.4 withs fauxs 123 1.3GHz kernel. wondering what you guys would recomend to set the unvdervolt settings at for each frequency. this is uncharted territory for me
[HTC EVO 3D] babyschmoof:
Is there a particular program that can be recommended for editing 3d video?
[Off-topic] tiwey:
Ok so there are alot of users who are waiting for there favorite devs to update there ROM or perhaps need a break from coding (or whatever you do). well i know something you can do......Join my MC server at 216.120.248.202:25565
[Acer Iconia A500] goodintentions:
Got 3.1 rooted. Do i still need the acwr iconia bat saver app?
[Galaxy S II Android Development] AdamG:
About

I'm not going to bore you with some long ass intro.

DevNull is an AOSP source built ROM, it's minimal, it's superfast and mostly bugfree.

This ROM is mostly a stock AOSP build however certain Android bugs have been fixed and a couple of small mods added.

This ROM would not be possible without the excellent work from teamhacksung so consider a donation to them for the hours they put in.

Features

Android v2.3.5 (GRJ90) built from AOSP

Linux kernel v2.6.35.7

Minimal Google apps

Superuser

Busybox

Additional features

Adhoc wifi network support

Advanced power menu with reboot and screenshot options

Download any file type

Enhanced auto backlight mod

Facebook contacts sync

Headset Icon

HSPA Icon

Improved widget picker

SIP calling over 3G

Various other tweaks and features

Installation

A wipe is required when first flashing this ROM, however, unless otherwise stated, no wipe is needed to upgrade between versions.

Download update-devnull-xxx-signed.zip to your sdcard storage on your SGS2

Boot into ClockworkMod Recovery through whatever method you choose (ROM Manager, Power + Volume Up + Home, ADB etc...)

Back up your existing installation

[First flash only] Use the volume keys and home button to format /data & /system

Select Install Zip from SD Card

Find the update-devnull-xxx-signed.zip file you downloaded earlier

Scroll through all the No's and hit Yes, install update-devnull-xxx-signed.zip

Wait for the installation to finish

Select Reboot

After initial reboot, reboot a second time and you're all set

Downloads

I'm not responsible for any damage what-so-ever done to your phone, as with any ROM, you accept this risk.

Downloads are available below.

Download here

Donate

Android development is a hobby for me, the Android community has been good to me and I enjoy what I do, I don't do it for any personal gain or gratification so if you like this ROM and would like to show appreciation for the time and effort me and other people have put into it then I would very much appreciate it if you could donate to the 'childhood leukaemia' charity I support, you can donate via Paypal or by card/cheque, thanks for taking the time to read this and thanks for donating if you choose to :).

Donate via Cancer Research UK

Credits

A big thanks to the following people, I couldn't of done any of this without you guys.

thalamus / schiznik / killkennys / python08

Additional thanks also goes to the following people who have made DevNull possible.

Cyanogen, CM Team, teamhacksung, st0kes & everybody who has donated ​

Screenshots

​
[Galaxy S II Android Development] AdamG:
*this is still a testing release, there is quite possibly going to be bugs*

*reserved*
[Galaxy S II Android Development] blunatic:
he did it !!! thx4good stuff:cool:
[Galaxy S II Android Development] kirdroid:
Thanks....does a2dp work? It doesn't on cm7, so just asking if you got it working :)
[Galaxy S II Android Development] eRajesh:
What all stuffs do NOT work?
[Galaxy S II Android Development] yousif666:
Very nice,

will try it.

Thanks.
[Galaxy S II Android Development] gtda:
off topic question

are you the devnull from the old sony ericsson forums

i used to download and flash themes for my c702 from devnull

on topic question

is there any screenshots

cheers
[Galaxy S II Android Development] AdamG:
No

Thats what your here for?

Not me sorry.
[Galaxy S II Android Development] phunkycow:
Hey AdamG, long time no chat. Good to see you here. :-) Will flash it soon but I already know its awesome :p Cheers!

Edit: This is now my daily rom. Vanilla awesomeness.
[Galaxy S II Android Development] ringrover:
What does it mean ....not me sorry ??? Any screen shoot ,,,,????
[Galaxy S II Android Development] gtda:
i asked him if he was devnull from another forum

its not him

thats what it means
[Galaxy S II Android Development] mdmar:
Wonderful! Now I can REALLY enjoy my sgs ii when Adam's on board=)
[Galaxy S II Android Development] lynxboy:
Hey Phunky! Glad to see you made the move to the SGS2....

OP, can't wait to try the build!

Regards.
[Galaxy S II Android Development] prosumerhacks:
Awesome!

Good to have a vanilla AOSP rom...

One question: will updates be coming forth from AdamG? :)

thanks!
[Galaxy S II Android Development] DocRambone:
Very very good :)

Thanks a lot, running butter smooth :D
[Galaxy S II Android Development] ghmail2:
1080p not working, because aosp? glad to see oxygen here, thanks for the desire time
[Galaxy S II Android Development] Boezelman:
Great to see a aosp rom here. My desire is still running on adamg's great roms! Thanks

I will flash this later today and report my findings here.
[Galaxy S II Android Development] g189ffin:
Does this mean that the bluetooth and wifi drivers are Google's and not Samsung's? Just cos I wanted to use a wiimote to control emulator games and get plex working.

Edit: I can confirm that plex works and so does Wii Controller IME with gameboid.
[Galaxy S II Android Development] stian230:
stock AOSP build yea thanks
[Galaxy S II Android Development] Locster126:
Adamg and aosp on the sgs2. Dream come true . Downloading now.
[Galaxy S II Android Development] hacksome:
Oops.. Coolya is a lead Teamhacksung member. He was making fun of the irrelevant version number game!
[Galaxy S II Android Development] miketwn:
Coolya knows what he's talking about......FYI he is one of the maintainer's of SGS Cyanogenmod.....;)
[Galaxy S II Android Development] sackynuts:
13 y/o w. access to teh interwebs... = above

Thanks AdamG :-) Still trying to flash it - can't get it to boot. Tried flashing cwm recovery which won't overwrite Chain-CF's modded CWM... And it doesn't work when flashing the zip from there. Could i flash CM7's cwm recovery and flash your zip from there?
[Galaxy S II Android Development] sackynuts:
He also stole my virginity...
[Galaxy S II Android Development] Pume:
He probably just cyanogenized it so that when you really do lose it (or if...) your experience will be enhanced ;)
[Galaxy S II Android Development] sackynuts:
I can confirm the bug with the market. :-( Can we get the old market as an apk-standalone?
[Galaxy S II Android Development] netcitizen:
Is the haptic feedback issue fixed now ?
[Galaxy S II Android Development] Boezelman:
Don't think so, if I remeber correctly it's a kernel issue...
[Galaxy S II Android Development] mach0boi:
Yep. Using the same as cm7 so both have the same issues :)
[Galaxy S II Android Development] bluheart:
Its almost 4hours that I am using this 2.3.5

I feel the phone blackens out at times, when calling from open contacts, while accepting a call when I am FB or Market, Voice quality is bad for hearing and also for the person whom I am calling. THESE were great on 2.3.4, specially I loved the voice quality and the quickness. Here I feel the phone is slow. Also file manager is needed, although I downloaded one from market. Market is cool looking and working fine.

Wifi couldnt work.
[Galaxy S II Android Development] hacksome:
The Market is slow and buggy. Most of the downloads got stuck at ~80% and timed out.

Does someone have the older vendor.apk?
[Galaxy S II Android Development] mach0boi:
Its vending.apk mate ;)

You can get it by searching around. Its been posted on diff threads :)
[Galaxy S II Android Development] Tamil92:
Yes i agree with you.

But Wifi Works Here

Market is Looking Good But Dead Slow.