Develop Bugs

[Q] queation about SetCpu

ok, i searched for the problem i had but couldnt find anything relevant. i hope someone can direct me to it, if there is any already, or give me an answer,
i downloaded Setcpu and ive seen most of people using "conservative" scaling for better battery life, but i dont see that option in the app. i just see ondemand, userspace and performance.
any idea if im doing something wrong?
and also i would appreciate if someone can tell me the settings for longer battery life? wanted to try it but didnt understand that much.
thanks.
btw im using virus rom rc3 with stock kernel.

The governors are kernel specific- if the kernel doesn't support it, it won't show up as an option. In your case, conservative scaling is not supported by the kernel you are using.

_MetalHead_ said:
The governors are kernel specific- if the kernel doesn't support it, it won't show up as an option. In your case, conservative scaling is not supported by the kernel you are using.
Click to expand...
Click to collapse
oh ok. now i got it. thanks for the info.

Both Netarchy and Kings kernels have "conservative" governors on them. One of the top ways to conserve battery is to make a profile setting for Screen Off where you set the min and max freq to the lowest possible setting. For me though I can go to 128 Mhz, I get too much lag on wake-up and therefore set to 384. Your phone may do better.
Someone also made a thread that describes the advanced settings. Tweaking those can also improve battery life as well.
Sent from my PC36100 using XDA App

sombdy said:
Both Netarchy and Kings kernels have "conservative" governors on them. One of the top ways to conserve battery is to make a profile setting for Screen Off where you set the min and max freq to the lowest possible setting. For me though I can go to 128 Mhz, I get too much lag on wake-up and therefore set to 384. Your phone may do better.
Someone also made a thread that describes the advanced settings. Tweaking those can also improve battery life as well.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
appreciate it.. thanks ..

Can I overclock with stock ROM?

I'm quite happy with the stock ROM. Is it possible to overclock it? Do I just need to install a overclockable kernel? Will I lose any functionality due to bugs/etc? What's the most reliable kernel for O/C?
Thanks,
Nick

It is possible to OC it only via a custom kernel.............so i recommend that you try the Dust kernel by einstein.frat

Yea he's right. what you need is only being rooted and recovery for flashing kernel..and of course a program which controls your cpu such as setcpu..
i recommend you kernel that cm7 used with last update. it supports 864mhz even and with no stuck( and battery drain )if you search for it on xda i am sure you will find..

valerosso said:
Yea he's right. what you need is only being rooted and recovery for flashing kernel..and of course a program which controls your cpu such as setcpu..
i recommend you kernel that cm7 used with last update. it supports 864mhz even and with no stuck( and battery drain )if you search for it on xda i am sure you will find..
Click to expand...
Click to collapse
In any way......DO NOT use the CM7 kernel...........an AOSP kernel is a bit different from the Stock(sense) one.................................it won't work

Thanks all. It looks like I'll give the dust kernel a try.
Are there preset CPU MHz settings for overclocking or is any integer value allowable? Most of the overclocking threads talk about 768Mhz, 806Mhz. My guess it's probably constrained by some clock multiplier factor.

oww i am happy to learn that

Plzzz reply which wills sbe the best overclock kernel for stock miui 12

[Q]Governor Ondemand 19MHz min 600MHz max

Ive flashed the cake v1.2 kernel on my stock rom, and gives me the option to set the cpu to 19MHz min, ¿theres some evidence if this setting gives more battery life or something?
Thnx

frostwildfire said:
Ive flashed the cake v1.2 kernel on my stock rom, and gives me the option to set the cpu to 19MHz min, ¿theres some evidence if this setting gives more battery life or something?
Thnx
Click to expand...
Click to collapse
No. But the idea is something like that I think. If the phone goes to deep sleep it will be at 0mhz with any kernel. It may freeze if U change the governor ondemand.
Use cake 1.4 or .9. Later is far better tho.

finance.resat said:
No. But the idea is something like that I think. If the phone goes to deep sleep it will be at 0mhz with any kernel. It may freeze if U change the governor ondemand.
Use cake 1.4 or .9. Later is far better tho.
Click to expand...
Click to collapse
Thanx, by the way i like your work on EQDKP!

[Noob Guide] What is and How to Undervolt

Hello, i wanna share my experience undervolting.
For people who dont know what undervolting is, its the power or energy that the battery send to the CPU with determinate clock speed.
For example:
384 Mhz is the lowest frequency of our CPU, it has a 800mv volt in the stock ROM with stock kernel.
So in theory, the battery send 800mv to the CPU when it runs at 384 Mhz.
The effect of undervolt the CPU is bassically get more battery life and at the same time reduce the temperature of the phone.Less energy send less battery used and less hot phone in our hands.
How to Undervolt
Im running Stock ROM with Ruby Kernel stable.
For undervolt you need a kernel that support it, you can do it in all rom if the kernel support that.
If you want to Undervolt, i recommend you to use Trickster MOD.
You can Undervolt maybe -50mv all frequencies and see how it goes. Some people can even in best cases undervolt -200 mv. But you need patience to test slowly.
DONT TICK SET AT BOOT IF NOT TESTED.
That why you cant:
For example if you undervolt -100mv and if not stable, and you have set at boot ticked, it will freeze the screen and after reboot it will happen again.
After you set the mv for undervolt, download from play store CPU stability test and run it.
It will test all CPU frequencies to see if it is stable.
If you dont get any SoD, congratulations its stable.
My undervolt settings are -100 or in some cases -75 mv and very stable. My battery temp is 30 C°.

Thank you very much
Sent from my LG-E975 using XDA Premium 4 mobile app

What is needed to undervolt?

Thanks for the info. What are your battery stats after undervolting? How does it suffer other operations of our mobile like browsing or gaming etc ?
Sent from my LG-E975 using xda app-developers app

You need to first make a backup, install a custom kernel, install trickster mod, and from there apply what this discussion is talking about. Good luck!
Sent from my Nexus 5 using xda app-developers app

lfuentes said:
What is needed to undervolt?
Click to expand...
Click to collapse
Bootloader unlocked with freegee and some kernel for your rom that supports undervolt.

nch26 said:
Bootloader unlocked with freegee and some kernel for your rom that supports undervolt.
Click to expand...
Click to collapse
And after that? Some specific app?

lfuentes said:
Some specific app?
Click to expand...
Click to collapse
Depends on the kernel. I am using Trickster Mod with Viper ZVC kernel. There are other control apps available -- some of them are kernel-specific, some are more universal (Kernel Tuner, Android Tuner, System Tuner, etc.). Look in your kernel's thread -- the developer usually tells which control app(s) to use with it.

nch26 said:
Hello, i wanna share my experience undervolting.
For people who dont know what undervolting is, its the power or energy that the battery send to the CPU with determinate clock speed.
For example:
384 Mhz is the lowest frequency of our CPU, it has a 800mv volt in the stock ROM with stock kernel.
So in theory, the battery send 800mv to the CPU when it runs at 384 Mhz.
The effect of undervolt the CPU is bassically get more battery life and at the same time reduce the temperature of the phone.Less energy send less battery used and less hot phone in our hands.
How to Undervolt
Im running Stock ROM with Ruby Kernel stable.
For undervolt you need a kernel that support it, you can do it in all rom if the kernel support that.
If you want to Undervolt, i recommend you to use Trickster MOD.
You can Undervolt maybe -50mv all frequencies and see how it goes. Some people can even in best cases undervolt -200 mv. But you need patience to test slowly.
DONT TICK SET AT BOOT IF NOT TESTED.
That why you cant:
For example if you undervolt -100mv and if not stable, and you have set at boot ticked, it will freeze the screen and after reboot it will happen again.
After you set the mv for undervolt, download from play store CPU stability test and run it.
It will test all CPU frequencies to see if it is stable.
If you dont get any SoD, congratulations its stable.
My undervolt settings are -100 or in some cases -75 mv and very stable. My battery temp is 30 C°.
Click to expand...
Click to collapse
Thank you, I'm using AK kernel with UKM and Synapse app from google playstore. Using E-975 (intl.). Can you suggest if I should change the global setting or the individual settings for frequencies ? I had recently (soft) bricked my phone by running benchmark at ~1900mhz CPU and 487mhz GPU (like a villain, I know. Re-connected battery to save it... phew..). I'm really cautious now and I just want it to be less hot and save some battery, that's all. Any guidance would be really appreciated... thanks

Claureid said:
Thank you, I'm using AK kernel with UKM and Synapse app from google playstore. Using E-975 (intl.). Can you suggest if I should change the global setting or the individual settings for frequencies ? I had recently (soft) bricked my phone by running benchmark at ~1900mhz CPU and 487mhz GPU (like a villain, I know. Re-connected battery to save it... phew..). I'm really cautious now and I just want it to be less hot and save some battery, that's all. Any guidance would be really appreciated... thanks
Click to expand...
Click to collapse
I dont have anymore this phone because some people stole my phone like 1 year ago. Sorry.

Oh okay, sad loss....

why cant i underclock the CPU?

Every time I try to underclock the CPU as soon as I leave the app the sliders go back to where they were originally. Even after applying on boot. Am I doing something wrong?

BakedOnSomeSour said:
Every time I try to underclock the CPU as soon as I leave the app the sliders go back to where they were originally. Even after applying on boot. Am I doing something wrong?
Click to expand...
Click to collapse
Since you've given virtually no information, I will assume that your phone is unrooted and/or running with the stock kernel. You will need to address both to be able to underclock.

Because underclocking is silly.

Wakamatsu said:
Since you've given virtually no information, I will assume that your phone is unrooted and/or running with the stock kernel. You will need to address both to be able to underclock.
Click to expand...
Click to collapse
I am rooted and running elementalX kernel

BakedOnSomeSour said:
I am rooted and running elementalX kernel
Click to expand...
Click to collapse
I'm not running EX. Does it use init.d or config script? Those may overwrite whatever method you're using to underclock at boot.

Underclocking-saving battery
Is a BIG LYE
CPU will not use full power (max freq) when not need.
Dont forget what is Mhz (how MUCH things CPU can do in what TIME) the only deffrent bettwen underclocked and overclocked is TIME.312Mhz will do something in 5 mins,but 2 Ghz will do it in 1 second. It just do faster,but battery use is same,count yourself

1. You warmed up a dusty thread.
2. Battery-work isn't simply product of time and frequency: longer low tasks eats fewer capacity than shorter peak ones.