[Q] doubts about undervolting and ROMs - Galaxy 3 General

Hi guys
I wanna know two things.
1. I saw some ROMs capable of being undervolted. I know undervolting decreases the voltage supplied to the CPU. How much voltage can we reduce? And does it help getting a better battery life?
2. If suppose I flash several ROMs and then go back to the official ROM before giving to the service centre, can they find out the ROMs i have flashed in the past?
thanks

1. It comes close to doubling my battery life, check out my config for more info.
2. How would they do that ? Just be sure to factory wipe, so you don't leave any traces in /data. And will they look in the first place ?

thanks for the reply dude
can u tell me how to go about undervolting or point me to a detailed guide?

I started with some recommendations posted by dharam if I'm not mistaken. I used Pimp my cpu (search the board) to put in the voltages and there you can choose to load them on boot as well. Basically it creates a script in init.d, which you can copy over to other ROMs if needed.
As far as voltages are concerned : start with -100mV on every frequency and try to get lower. Only change one at a time and use the phone for a while to test stability. I haven't found a better way to test stability on all the frequencies. Do any of the other members know a better way ?

Bubble-be said:
I started with some recommendations posted by dharam if I'm not mistaken. I used Pimp my cpu (search the board) to put in the voltages and there you can choose to load them on boot as well. Basically it creates a script in init.d, which you can copy over to other ROMs if needed.
As far as voltages are concerned : start with -100mV on every frequency and try to get lower. Only change one at a time and use the phone for a while to test stability. I haven't found a better way to test stability on all the frequencies. Do any of the other members know a better way ?
Click to expand...
Click to collapse
Nope, it is the only way
but instead of starting with -100 start with -25 only...
some people may have a problem with directly -100

Related

Overclock Cyanogen settings

I have rooted abdroid 2.3.4 with cyanogen 7 and in the settings there is one that i can change the maximum value to cpu...Now is at 998....what value above that is the safest to choose with out the phone have any problem???
depends which rom it is
some can go up to 1.5 and some cant
Can also depend on the phone, I have 2 hd2s, one chuggs along nicely at 1075mhz, the other gives random slowdowns / hangs (4-5 a week,not lots but enough to be a pain) at any setting above 921mhz. Same rom,same installed apps, same data.
Well here are the Phone Info
Model
HTC HD2
Andorid
2.3.4
.......
15.42.50.11U_2.15.50.14
Kernel
2.6.32.15_tytung_r10-gbdfeaac
Mod Version
CyanogenMod 7-05252011-NIGHTLY DESIRE
GRJ22
Anyone?
Sent from my HTC HD2 using XDA App
The best thing to do is scale up gradually, try each step above 998. OC then try it for 24hours, then try a step up and try it for 24 hours and so on. Do not check set at boot though just in case you pick a speed that causes problems.
What can go wrong???How do i see that it cant support a number??We are talking about maximum price and not all the time...???Someone that tried and have it overclocked????
What can go wrong???
It coukd stop booting and require a hard reset/backup restore.
How do i see that it cant support a number??
It will start to give force closes, hang, reboot, feel sluggish..
We are talking about maximum price and not all the time...???Someone that tried and have it overclocked????
Do a cwm backup and just try it, worst case scenario is it doesn't boot and you have to restore.
ntisco said:
What can go wrong???How do i see that it cant support a number??We are talking about maximum price and not all the time...???Someone that tried and have it overclocked????
Click to expand...
Click to collapse
I would guess that the majority of users are overclocked. I, for example, am running my phone smoothly at 1.2 GHz without problems, but to be honest I scarcely notice the difference with overclocking. Dorimanx's kernel with 1.61 GHz overclock didn't really perform any better than Tytung r14 at 1.2 GHz.
Just do as the others said and try it out whilst making sure to uncheck 'set on boot', but I think any speed should really be fine.
I don't know what the general opinion is on this (some devs say it isn't a good app) but use setCPU in order to create profiles if you want, thus being able to reduce your standby battery drain and stuff like that
In the quandra the info of the phone whrites that the cpu is up to 1190mhz and know is at 998.Is this true?Can it go that much?
If so we can put it at 1113 that its safe?
I know that i ask again and again but i dont want the phone to lose or damage
Youre best bet would be to download setCPU and try different clock speeds . the thing about setCPU though is it has a stress test . So after you set a speed . you can run the stress test to test if its too high a value or if you are safe to run at that speed . just dont tick the box that says "apply at boot"
My phone (currently Dorimanx ROM) is stable at 1536MHz. On Cyanogen it was similar. On 1612 it had freezen for a few times while watching a flash video on youtube. Set it to 1,4GHz, and it should work fine. Phone will not damage, data too. Just as they written above, do not click apply at boot.
And make stress test for more than 10 mins, because I have done it for 10 mins, and as I written, it had freezed during YT watching.
The topest that it has is 1190..that is the last option !!!I put it at 1113 for one day know and i made a profile to go 573 when i close the screen.
Tomorow i try the next option antil 1190 ...and we will see
Tytung r10? Why not upgrade to another Kernel?
I think that's the core issue. Dorimanx kernels i.e. can be clocked solid to 1.2ghz
Oh, I've completly forgotten. I have used Dorimanx kernel with Cyanogen. But it doesn't let you reinstall rom from settings (Factory reset). You need to reinstall rom from zip or restore backup in CWM. On 1190 it will work stable for ever

[GUIDE] For those with 0% battery issue and poor battery life..

Well, it worked with three other testers, some friends of mine that found the same problem. If you're facing this, try and feedback me. Just want to make sure that I've helped someone.
This guide is for those who have the 0% battery issue, found the fix by Bazoocaze (thanks a lot !!!) and are experiencing some quick battery drain. If you're not, then you can go read something else In two or three weeks of testing, I believe that this does not have something related to the ROM that we're using. The processes on background and the use of CPU is relative, but maybe a process is using too much energy, and if we keep the energy level on a low status, I think this process won't have so much energy to use. And maybe the kernel, or the kernel's governors are affecting something, not sure of this last one. I've also concluded that this don't have anything to do with the Wi-Fi modules, because I've already tried that fix, and it drains pretty quick anyway, some believe that there is a bug affecting the Wi-Fi, and it doesn't turn off, even if we turn it off on the menu.
First of all, if you haven't find the fix, read this: http://forum.xda-developers.com/showthread.php?t=1312398
You can also use the DooMKerneL ICS v4 that DooMLorD developed, and it already has the patch built-in (I recommend for this guide): http://forum.xda-developers.com/showthread.php?t=1520654
1 - Flash the kernel, the one of Bazoocaze or the DooM Kernel
2 - Turn on your phone, normally, make all your configs, and do a little test, BEFORE following this guide. See how many time your battery can hold on. If you feel that it's going out too fast, keep going on the guide.
3 - For this operation, I suggest you buy or download the free version of SETCPU, never forget that name. NoFrills didn't work very well to me..
4 - Overclock, if you want and if you're using DooMKerneL. Keep the MHz min on 364 (will explain later)
5 - Go to the profiles tab and press the ''plus'' button. Change the MHz max to 768 and keep the min at 364. In profile, select Screen Off, and change the governor to powersave or smartass and set priority to 100%
6 - Save it, and press Enable and Notifications on the bottom of the screen.
7 - Now test it for some time. Try not to keep your screen always on, as it ''cancel'' the effect of this guide.
Explanations:
a) The reason to keep the min MHz at 364 is that you won't face stuttering in the screen on/off, because the app will only change the max value, and not the min value, which makes the system still work fine (I believe, if some dev could correct me..). It behave better in AOSP alike roms.
b) NoFrills didn't give me the same results as SetCPU, that's why I'm recommending SetCPU. Make some effort to buy the Pro app.
c) The main trick is to reduce the power usage and capacity when the screen is off, because you don't use your phone 100% of the day, and because the process that may exist (mentioned above) would not use the whole capacity of the energy and the CPU as well. That's why it works. At least worked for me.
d) There is absolutely no hardware of software issue if you try this guide, you can uninstall the SetCPU app and use kernel other than DooM's. It's safe and quick, if it doesn't work, you can always revert everything.
Please, if you want to try this guide, give me the feedback. As I've said, I just want to confirm that theory and make sure that I've helped someone.
Thanks Bazoocaze and DooMLorD for being life savers!!!!!!!!
Bye
Thanks for your help
Sent from my LT18i using xda premium

Wifi issues on all cooked roms? Overclocking side question

I have a HD2 with an older version of android cooked on. Android version 2.3.7 Kernel version 2.6.32.15_tytung_r12.4-heebf2c Mod version is CyanogenMod-7.1.0 Desire (Typhoon_v3.7.0 Magldr) I think my radio is 2.15.50.14
I really need the wifi calling feature on my phone to work. Do all the roms have this problem on our phones? Would it be easier for me to just install a new rom? Every time I turn on wifi, the phone freezes completely. I read through the post regarding this issue, but there was no specific information given about how to overclock the phone. I downloaded nofrills cpu control and have tried random combinations, but was wondering the ideal oc speed?
resevil83 said:
I have a HD2 with an older version of android cooked on. Android version 2.3.7 Kernel version 2.6.32.15_tytung_r12.4-heebf2c Mod version is CyanogenMod-7.1.0 Desire (Typhoon_v3.7.0 Magldr) I think my radio is 2.15.50.14
I really need the wifi calling feature on my phone to work. Do all the roms have this problem on our phones? Would it be easier for me to just install a new rom? Every time I turn on wifi, the phone freezes completely. I read through the post regarding this issue, but there was no specific information given about how to overclock the phone. I downloaded nofrills cpu control and have tried random combinations, but was wondering the ideal oc speed?
Click to expand...
Click to collapse
I never used Tytung's GB rom but wifi generally works very well. I used it all the time with Typhoon GB, Tytung's ICS and JB.
For overclocking Install Setcpu from the Play Store.
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With proper diet, rest, and exercise a healthy body will last you a lifetime... (via Tapatalk)
Can you give me an estimated range I should set my cpu to? I can't find the thread, but somewhere along the line I read something about how you should over clock your processor in multiples of something. I'm not describing it well, but maybe it had something to do with a mhz speed and then a frequency or another unit of measurement for power. Like volts. I have no idea, what I'm trying to say is that I read there is some sort of calculation you need to figure out in order to properly adjust your cpu settings.
ny_limited said:
I never used Tytung's GB rom but wifi generally works very well. I used it all the time with Typhoon GB, Tytung's ICS and JB.
For overclocking Install Setcpu from the Play Store.
---
With proper diet, rest, and exercise a healthy body will last you a lifetime... (via Tapatalk)
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Click to collapse
resevil83 said:
Can you give me an estimated range I should set my cpu to? I can't find the thread, but somewhere along the line I read something about how you should over clock your processor in multiples of something. I'm not describing it well, but maybe it had something to do with a mhz speed and then a frequency or another unit of measurement for power. Like volts. I have no idea, what I'm trying to say is that I read there is some sort of calculation you need to figure out in order to properly adjust your cpu settings.
Click to expand...
Click to collapse
I think that all better apps for this already take care of much of what you are looking for. I know SetCPU does - in fact it has profiles for numerous phones, including the HD2. The one disadvantage that I tend to forget is that it isn't free. If you look at the app's description on Google Play you will get a lot of ideas. Likewise, the developer's web site also has some good info.
Briefly, I do not set any profile's low frequency below 245 MHz (potential SODs). The high-end you can experiment - if the HD2 locks up reboot and set it lower.
I have a default profile and change it to faster MHz if plugged in (I don't care about using more power when plugged in) or lower frequencies for sleep or overheating and such. If you do get SetCPU you can plug in the attached profiles (don't forget to unzip it first!) and see if you like any of them. They can all be changed or deleted, of course.

[Q] Issue underclocking and Overheat

is anybody else having an issue when you underclock? i usually set it to 1.4Ghz but the phone overrides the setting i put up using Atuntu CPU master. i feel that the phone is still fluid when underclocked, so i tend to under clock to save battery life(and stop if from overheating to 105.1 degrees farenheit).i need to get full usage out of my phone as the day starts at 5 AM till 5PM with heavy usage
any luck with this issue?
Kernel on forums if you have compatible phone. Inteli and trickster with thermald disabled. Lock freq. While your at it, look up your soc bin and and start trialling undervolts.
42 8996883
Steamer86 said:
Kernel on forums if you have compatible phone. Inteli and trickster with thermald disabled. Lock freq. While your at it, look up your soc bin and and start trialling undervolts.
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Click to collapse
in English please? o dont get what wou mean by the SOC Bin and the part after that. i did the trickster, but it still overrides it.
You can't make it stick with default kernel. You need a modified one with inteli so thermald doesn't auto override. SOC bin is details on your "CPU" quality for base volt values, better SOC means better overclock, underclock, and undervolting. If you're serious in doing this, search and learn. This isn't simple modification, and you will not be able do this in simple way. Make sure you have set on boot checked in trickster. Well work somewhat better, but still not a permanent solution.

j5 heat problems

well my phone cpu is always around 40 - 50 at any clock ( 0.8 to 1.2 ) and this produces a heat around the screen ( the phone is blazing fast and smooth consumes a fair amount of battery ) i 've installed before many roms and this problems started when i first used root booster with 6.0.1 then it presisted with any rom i install even flashing official rom don't change the config
my questions is is those thermals normal ?
can somebody screeshot CPU covernor tunable from kernel auditor
and how can i reset my cpu original setting
wadhah1000 said:
well my phone cpu is always around 40 - 50 at any clock ( 0.8 to 1.2 ) and this produces a heat around the screen ( the phone is blazing fast and smooth consumes a fair amount of battery ) i 've installed before many roms and this problems started when i first used root booster with 6.0.1 then it presisted with any rom i install even flashing official rom don't change the config
my questions is is those thermals normal ?
can somebody screeshot CPU covernor tunable from kernel auditor
and how can i reset my cpu original setting
Click to expand...
Click to collapse
You have made similar threads/posts before CPU kernel and settings are reverted to original when you flash a stock rom. During summer, my cpu was between 40-50 and now it is cooler. It depends of what you do with your phone. For example, mobile data - GPS can cause heat to phone.
If you think that something is wrong with your phone, you can bring it to a service... although i dont trust anyone unless i see with my eyes what they do.
#Henkate said:
You have made similar threads/posts before CPU kernel and settings are reverted to original when you flash a stock rom. During summer, my cpu was between 40-50 and now it is cooler. It depends of what you do with your phone. For example, mobile data - GPS can cause heat to phone.
If you think that something is wrong with your phone, you can bring it to a service... although i dont trust anyone unless i see with my eyes what they do.
Click to expand...
Click to collapse
i am at minium use and the phone hits up flashed stock rom but the problem is always consistent

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