Develop Bugs

Cyano 7 RC battery life?

I recently flashed to cyano 7 RC. Ever since its seemed to me my battery life has been lower than with stock. This is contrary to the Roms reputation so I'm curious if anyone else has had a similar experience.
I'm using the stock kernel mostly because I don't feel familiar enough with kernels to experiment yet.
Any advice would be great.
Sent from my ADR6300 using XDA App

I have been experiencing the same, although I have noticed my screen off battery is significantly improved. I've been running the nightlies for RC1 and every build the battery life can be a hit or miss with the stock kernels
sent from my ADR6300 using XDA App

http://forum.xda-developers.com/showpost.php?p=9364847&postcount=1
chad's kernels for GB are AWSOME for battery life. remember to enter settings/cynogenmod/performance and set the cpu to smartass and the min to 128 and you should notice a huge differance.
also i like to wipe the delik cache right before flashing a new kernel. good luck

kidhudi said:
http://forum.xda-developers.com/showpost.php?p=9364847&postcount=1
chad's kernels for GB are AWSOME for battery life. remember to enter settings/cynogenmod/performance and set the cpu to smartass and the min to 128 and you should notice a huge differance.
also i like to wipe the delik cache right before flashing a new kernel. good luck
Click to expand...
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I'm interested in knowing more about Kernel changes but so far I've been unable to find any comprehensive tutorials. Many of the stickies here at XDA assume a certain level of prior knowledge.

Its as simple as flashing a mod, just download, boot into recovery or install via rom manager, wipe data/cache.
Sent from my Incredible using XDA App

Coming from someone that's been running Cyanogenmod 7 since 2-3 weeks before nightlies, and someone who doesn't charge their phone at night, I feel I have a little room to talk here. I am currently running the incredakernel by Chad. It has givin me the best balance of battery life and performance that I could possibly find (and I have tried all 2.3 compatible kernels, and some 2.2 kernels) I'm not saying he has the one and only good kernel, though it works great for me.
http://forum.xda-developers.com/showthread.php?t=848453
Smartass Govenor
128-1036 clock settings
Don't use Setcpu or anything. Smartass has a screen off built in so it gets amazing battery life. I've tried several, and found the best was not using it at all. Some say conservative gives better battery, and I can say that's false on all of my testing. One last thing. Every phone is different, and everyone's taste is too. This is not the only option, but my personal, opinion. Good luck

Skrillex1 said:
Its as simple as flashing a mod, just download, boot into recovery or install via rom manager, wipe data/cache.
Sent from my Incredible using XDA App
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If something goes wrong with a kernel flash clockwork will still function right? That is to say that clockwork does not rely on the kernel at all?
Sent from my ADR6300 using XDA App

k4el said:
If something goes wrong with a kernel flash clockwork will still function right? That is to say that clockwork does not rely on the kernel at all?
Sent from my ADR6300 using XDA App
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Correct... easy as pie

What do kernals do??

I'm using XDA app and been searching forums on what kernals do, I'm running cm7 latest nighty with tiamat latest version. Not sure what all the features are , I know it does overclocking and under and voltage adjustments, just wondering if it was worth going to tiamat from cm7 kernal and if it gives better performance and better battery? Thanks
Sent from my PC36100 using XDA Premium App

fierceeagle2003 said:
I'm using XDA app and been searching forums on what kernals do, I'm running cm7 latest nighty with tiamat latest version. Not sure what all the features are , I know it does overclocking and under and voltage adjustments, just wondering if it was worth going to tiamat from cm7 kernal and if it gives better performance and better battery? Thanks
Sent from my PC36100 using XDA Premium App
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Different kernels work better for different phones... give them a try (give it a few days) and see which works best for you! Like you said, undervolting, under/overclock, BFS, HAVS, CFS, all features to increase battery life and/or performance!

Thanks for reply
Sent from my PC36100 using XDA Premium App

The kernel is the part of the operating system that is in direct control of the hardware, its the lowest level of the OS. It controls the frequency the CPU runs at, how much power to pull from the battery, how to schedule I/O, how many frames per second animations run at, and things of that nature.
In my opinion, rooting is almost useless without flashing a custom kernel. Thats really the only way to increase the performance of your phone.

cobirch2 said:
The kernel is the part of the operating system that is in direct control of the hardware, its the lowest level of the OS. It controls the frequency the CPU runs at, how much power to pull from the battery, how to schedule I/O, how many frames per second animations run at, and things of that nature.
In my opinion, rooting is almost useless without flashing a custom kernel. Thats really the only way to increase the performance of your phone.
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Thanks..
Sent from my PC36100 using XDA Premium App

Darkside digital warfare

I was wondering why after updating from and stock Telus ROM and darksides kernel from his kernel thread to the DDW ROM my processor has been slowed down to 1.35 GHz I saw in notes he does this for safety or something but my Telus G2X has a 1.5 GHz CPU stock am I better off running my stock ROM with just a kernel. Also my 4g icon has disappeared. I also ran some bench tests before and after with those previously mentioned ROM kernel combos and I went from 1.75 overclocked to 1.35 and it shows me being slower then a stock galaxy s2 X.
Sent from my SGH-T989 using XDA

Download a clock controller app from the market and set the clock to whatever you like, i use setcpu. Pretty straight forward.

The point of the underclock and undervoltage in Darksides ROM isn't to gain stability or because of a problem with stock speeds....it's only purpose is to give you better battery life.
Stability with custom ROMS is the problem you will run into when you test enough of them.
I think the most stable one I ran was Gingersnap.
Peace.

Is it safe to overclock to 1.85? Does it just suck life out of battery
Sent from my SGH-T989 using XDA

curry67 said:
Is it safe to overclock to 1.85? Does it just suck life out of battery
Sent from my SGH-T989 using XDA
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Darksides kernel oc's to 1.78 ghz but comes stock at 1.35
If you torque it up all the way, the phone will def perform better but the battery life will suffer.
I was using the bullet kernel on juggernaut and it is at 1.67 ghz... Battery life went down quickly if inwas using the phone a lot.
Sent from my SGH-T989 using XDA App

Yeah I set it to cap at 1.52 I just hope these profiles work
Sent from my SGH-T989 using XDA

ninrocket2 said:
The point of the underclock and undervoltage in Darksides ROM isn't to gain stability or because of a problem with stock speeds....it's only purpose is to give you better battery life.
Stability with custom ROMS is the problem you will run into when you test enough of them.
I think the most stable one I ran was Gingersnap.
Peace.
Click to expand...
Click to collapse
dude just stop with your anti custom ROM posts. There's a reason why a lot of people use custom roms, it's been completely stable for us.
you are a case of user error

Best route for overclocking with CM10?

This is my first rooted device and I'd like to set the CPU frequency higher. I've read that 1600 is moderately safe and 1800 is feasible. After installing setcpu I've realized that CM10's kernel does not allow overclocking. What is the best action to take? Am I out of luck if I want to stick with CM10? Or is there another kernel I can use compatible with CM10? Thanks for reading.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Try kt kernel in original development, I've used it with great success. Has oc up to 1.89. Also allows you to under volt to save some battery. In conjunction with ktoonz kernel get voltage control from the market to adjust cpu clock and voltages.
Sent from my SGH-I747M using Tapatalk 2

I use Leankernel to go up to 1.9Ghz :good:

Rocket Nine said:
This is my first rooted device and I'd like to set the CPU frequency higher. I've read that 1600 is moderately safe and 1800 is feasible. After installing setcpu I've realized that CM10's kernel does not allow overclocking. What is the best action to take? Am I out of luck if I want to stick with CM10? Or is there another kernel I can use compatible with CM10? Thanks for reading.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
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Mine has been getting pretty damn hot just at stock clock speeds...you sure you want to do that? CM10 is so fast already!

fortesquieu said:
I use Leankernel to go up to 1.9Ghz :good:
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Thanks for the suggestion. I used Leankernel all day without a single issue that isn't specific to CM10 right now.
P.S. I also upgraded the modem to I747UCLH1 from this thread. To anyone interested, test your data speed on all three modems to find the best one to keep. My rates doubled with this new modem.

Kt new kernel up. 2.1ghz ktweeker app. Running Sammy version and it's blazin fast.
Sent from my SAMSUNG-SGH-I747 using xda premium

ovwerclock
Hey this might be a bit late on this thread, but Siyah has just released an updated, which works with cm10 and allows for overclocking up to 1600, and undervolting to save on that ole battery... currently for the galaxy s3

Obligatory reminder:
Not all phones are the same. Some tolerate overclock/undervolt better than others. What you WANT your phone to do may not actually be what it WILL do. Start slow, only change one step at a time. I would recommend finding the perfect oc point for your phone, then slowly, slowly working the undervolt into it.

Cyanogenmod 7 and 10 overclocking questions

hi i'm looking to overclock my sprint epic 4g cpu up to 1.8ghz and also the gpu to 300mahz and 72hz refresh rate
on either cyanogenmod 7 or 10
what kernel and ROM and CPU/GPU overclocking apps should I use with voltage control and what (safe) voltages should I try for the cpu and gpu ARM and Internal voltages (what build number do I need for cm 7 or 10 (either stable or nightly)
also I noticed that the slide out keyboard shift and function keys don't work on cyanogenmod 10 stable build not sure about a nightly build
I'd like to fix the keyboard too
i'd like to be able to turn the boot logo on and off and possibly change it to a different one and also add a boot up sound to the logo
should I use the franko or samurai or maybe a different kernel ?
what modem should I use for max speed (EL30 FC09 FC19 or Nexus LF2 K2 ?) and compatible rom
I know how to install everything just need advice
If all of the above isn't possible at least I'd like to get the CPU to the highest possible speed past 1.2 ghz if possible most of all and not have random reboots or lockups or sleep of death and woking keyboard and least amount of bugs in the rom
Thank you so much in advance for any advice

Do your shift and Fn keys work if you hold them down when using them? Kind of like the way you would use them on a PC keyboard?
Sent from my SPH-D700 using Tapatalk 2

Last thing I know of that had what you're looking for is CM9 with Samurai Kernel. The processor clocks to 1.5 Ghz and I believe the gpu is overclocked to 400Mhz. Idk what the refresh rate for the screen is, but that combo would probably be the closest to what you're looking for
Sent from my SPH-D700 using Tapatalk 2

jeffreyjicha said:
Last thing I know of that had what you're looking for is CM9 with Samurai Kernel. The processor clocks to 1.5 Ghz and I believe the gpu is overclocked to 400Mhz. Idk what the refresh rate for the screen is, but that combo would probably be the closest to what you're looking for
Sent from my SPH-D700 using Tapatalk 2
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Click to collapse
I used it before, it really messed up my phone.
glad to hear/see any follow ups.
using CM10.1 overclocked.

jeffreyjicha said:
Last thing I know of that had what you're looking for is CM9 with Samurai Kernel. The processor clocks to 1.5 Ghz and I believe the gpu is overclocked to 400Mhz. Idk what the refresh rate for the screen is, but that combo would probably be the closest to what you're looking for
Sent from my SPH-D700 using Tapatalk 2
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Click to collapse
^^^^this... there is no franco kernel here, that's for the epic touch... nobody has been able to overclock this phone past 1.6 Ghz... samurai had 1.6 at one point, but it was removed because there were stability issues with most phones trying to overclock that high... samurai has always been my favorite kernel from tw gb roms all the way to cm9... sadly development stopped when earthbound upgraded and there is no samurai kernel for cm10 or 10.1... everybodies phone is different and handles overclocking differently... best bet is to just keep trying combinations until you find your perfect match...

SubCool said:
Bump
Sent from my SPH-D700 using xda app-developers app
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I don think you can get what you're looking for . the answers provided should be enough to tell you that this phone can't be oc'ed that much
Sent from my LG-MS770 using xda app-developers app

lmsomb said:
I don think you can get what you're looking for . the answers provided should be enough to tell you that this phone can't be oc'ed that much
Sent from my LG-MS770 using xda app-developers app
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Um- the responses tell me its capable..
HOw do you individually OC the GPU?

SubCool said:
Um- the responses tell me its capable..
HOw do you individually OC the GPU?
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Not possible on cm10... with cm7 you'll have to dig around and search for samurai kernel...

flastnoles11 said:
Not possible on cm10... with cm7 you'll have to dig around and search for samurai kernel...
Click to expand...
Click to collapse
I have a link to the CM9 kernel that goes to 1.5Ghz.

flastnoles11 said:
Not possible on cm10... with cm7 you'll have to dig around and search for samurai kernel...
Click to expand...
Click to collapse
I have used it on CM9, and got it to 1.4 comfortably, but the kernel itself was quarky as hell. The battery died when unclocked and- just all in all at bad kernel.
im curious on what he did to make it do that though. Was it an app he combined into the kernel? Did he expand something?
Technically- OC"ing is just like any normal OC. INcrease the multiplier or frequency and then manipulate the voltage to handle the work. But- THe couple app i foudn that do that- like uh... setcpu, targek or something all arent supported by our rom/kernel/ something. Its rather frustrating.
With the Packman ROM im using, he combined the Performance control into the rom, and you can actually change the voltages- but.. i cant make it go faster.
TO go on with that- i still cant find a way to OC the GPU. i see people saying they got it up to 400mhz. or something. But- HOW!? an app? Kernel again!? heck, i dont even know what the stock settins are. :/

GPU overclocking is achieved in the kernel.
Friendly Neighborhood Moderator

SubCool said:
I have used it on CM9, and got it to 1.4 comfortably, but the kernel itself was quarky as hell. The battery died when unclocked and- just all in all at bad kernel.
im curious on what he did to make it do that though. Was it an app he combined into the kernel? Did he expand something?
Technically- OC"ing is just like any normal OC. INcrease the multiplier or frequency and then manipulate the voltage to handle the work. But- THe couple app i foudn that do that- like uh... setcpu, targek or something all arent supported by our rom/kernel/ something. Its rather frustrating.
With the Packman ROM im using, he combined the Performance control into the rom, and you can actually change the voltages- but.. i cant make it go faster.
TO go on with that- i still cant find a way to OC the GPU. i see people saying they got it up to 400mhz. or something. But- HOW!? an app? Kernel again!? heck, i dont even know what the stock settins are. :/
Click to expand...
Click to collapse
1. He did it by being a kernel master... 2. they aren't supported because of the kernel you're using. 3. And again, the kernel you're using. The only way to overclock the gpu is with the samurai kernel.
4. And most importantly, for everything you want out of a kernel, it's about time to learn Linux and build your own kernel...

flastnoles11 said:
3. And again, the kernel you're using. The only way to overclock the gpu is with the samurai kernel.
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Click to collapse
Aww man I miss Samurai's 400MHz GPU OC... But the Voodoo defaults there is VERY terrible... Just why isn't there a kernel with ONLY GPU OC (i.e. no CPU OC up to like 1.4GHz (I think games depend more badly on GPU) and no Voodoo and such)...
Sent from HTC Incredible S @ PACman v21

If you build it, they will flash it!

Yes, for those looking for an easy way out, it's not going to happen. Learn to make a kernel then learn how to manipulate the settings. If it was easy then everyone would be doing it. No one has any other spoon fed answers.

I think not having an easy way out may be the definition of xda-developers. Forget where I read it but it's about the journey rather than the destination, which I know doesn't hold true for every one but I know it does for me.