Develop Bugs

[Q] Overclocking issue

I couldnt find any information to help my issue and i have been looking for a while. Months ago i was really trying to OC my phone. No matter what kernel or rom I used I could never get it over the default clock speed. I finally found one rom EVO.ZONE.RED.1.20.11 That would allow me to OC. In setcpu I could go over the default clock speed (i dont know how high off the top of my head). Is there any reason why that one rom allows me to OC but no others do? If so I want to try and duplicate it with other roms. Thanks.

OC ability is determined by the kernel. The ROM you were using had a custom kernel with that feature baked in. if you want to OC just flash a new kernel, but make sure it's compatible with whatever ROM you're using

flying_low said:
OC ability is determined by the kernel. The ROM you were using had a custom kernel with that feature baked in. if you want to OC just flash a new kernel, but make sure it's compatible with whatever ROM you're using
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Yeah... i undersand that. I tried multiple roms and kernels with no luck. Just that one Rom. Trying to figure out why, rather than flash kernel after kernel.

c0011j said:
Yeah... i undersand that. I tried multiple roms and kernels with no luck. Just that one Rom. Trying to figure out why, rather than flash kernel after kernel.
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Click to collapse
try a netrachy-toastmod Kernel that allows for some overclocking also you might have to disable Perflock By clicking menu then selecting Perflock Disabler if you are using a sense based rom.

[Q] About custom Kernels and overclock, some questions

Hi,
After some weeks with my GN i think i'm ready to try a new kernel.
Currently i'm using the AOKP M4. My question is : to flash the new kernel, i just put in the SDcard and install it in recovery mode ? Do i need to wipe anything ? Will i loose any data ?
If anything goes wrong, i all need is to restore the last backup, right ?
What kernel do you guys recommend with AOKP ? I'd like to have options to overclock ; they said the 'normal' clock o GN would be 1.5ghz, so i can run in this clock without risks, is this true ?
Thanks in advance !

You are correct - drop the kernel's .zip onto your SD card and flash it in recovery. There is no need to wipe (in fact, DO NOT WIPE). You won't lose anything. If you have issues with the kernel, you can always revert back to the "stock" kernel by reflashing the AOKP .zip
I've had great results with faux's kernel: http://rootzwiki.com/topic/11552-gn-gsmhybrid-3024-ics40234pre-uvoctuncifsotgfiopsv014mar-22
All hardware is created differently so you may or may not be able to OC to 1.5GHz. For stability and battery life I usually OC to 1350MHz... but I also usually run an underclock at 1060MHz for even better battery life. 1060MHz is plenty powerful for everyday use, calls, web browsing, etc, and I've got a Tasker widget set up to instantly toggle between the two clocks for gaming and such.

codesplice said:
There is no need to wipe (in fact, DO NOT WIPE).
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That is not true, you need to wipe cache and dalvik-cache when flashing a kernel or you could run into bootloops or crashing issues.
If you are on a 4.0.3 or 4.0.4 ROM then use a kernel from either of those versions. Dont use a kernel designed for 4.0.2 or earlier with any later ROM versions
Glados kernel has the best overclocking by far
Popcorn kernel seems to be the fastest with stability
Minimalistic kernel (forget the actual name) is the best on stability but is a bit slower than others
Franco has random experimental features that sometimes work really well, and sometimes you have lots of problems, his has least stability of anyone.
Tuna kernel seems just all around average in all areas, not excelling at any one thing but not bad in any areas.

EniGmA1987 said:
That is not true, you need to wipe cache and dalvik-cache when flashing a kernel or you could run into bootloops or crashing issues.
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Eh, it really depends on the kernel you're flashing. I very rarely do any wipes when flashing a kernel... the only kernel that's ever given me problems with that is GLaDOS - probably due to how different its ramdisk is from stock.

EniGmA1987 said:
Franco has random experimental features that sometimes work really well, and sometimes you have lots of problems, his has least stability of anyone.
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lol are you serious? his kernel is one of the most stable kernels ive ever used. r121 and r161 are both nightly builds and have been EXTREMELY stable with amazing battery life. his kernel just gets better and better.
i have yet to get a sod or reboot on this kernel

codesplice said:
Eh, it really depends on the kernel you're flashing. I very rarely do any wipes when flashing a kernel... the only kernel that's ever given me problems with that is GLaDOS - probably due to how different its ramdisk is from stock.
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Glados kernel has no RAMdisk, its creator believes the RAMdisk should belong to the ROM and not the kernel. So you have issues when flashing to Glados from another kenerl because you still are running the old kernel's RAMdisk with the different, new kernel. If everyone follows this proper procedure we would have no issues and higher compatibility with ROMs and kernels. Unfortunately most custom kernels like to use their own RAMdisk and so issues arise.
zephiK said:
lol are you serious? his kernel is one of the most stable kernels ive ever used. r121 and r161 are both nightly builds and have been EXTREMELY stable with amazing battery life. his kernel just gets better and better.
i have yet to get a sod or reboot on this kernel
Click to expand...
Click to collapse
Franco is quick to fix problems so you probably dont notice, however if you read through his thread there are often releases with bugs in it. Things from Wakelock issues, sleep of death, and broken wifi. He fixes these of course usually within a few hours but you never want to grab the latest kernel when it is first released. Always wait to see who has problems and for a fix to be released. Usually the last release of the night has no real bugs. Franco's quick releases are both the cause and solution to the bugs in his kernel. Other people test more so release with less bugs. Also Franco likes to put experimental stuff like 512MHz and 480MHz GPU clocks in, which dont even run on some peoples phones.

Try popcorn kernel. I'm running it since day one without a problem, it's snappier than stock and battery lasts much longer.

EniGmA1987 said:
Glados kernel has no RAMdisk
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So that would be quite different from stock then
I couldn't remember what exactly it was that made GLaDOS so different; I've been off that kernel for a while. It seemed to have a lot of really cool ideas put into it, but it didn't work well overall for me (yes, even after flashing faux's reset kernel and wiping cache and dalvik). I had a lot of SOD issues (with "stock" clock and voltage settings), and I could never get the logcat module to work properly. I break enough applications that I can't really get by without logcat.

EniGmA1987 said:
Franco is quick to fix problems so you probably dont notice, however if you read through his thread there are often releases with bugs in it. Things from Wakelock issues, sleep of death, and broken wifi. He fixes these of course usually within a few hours but you never want to grab the latest kernel when it is first released. Always wait to see who has problems and for a fix to be released. Usually the last release of the night has no real bugs. Franco's quick releases are both the cause and solution to the bugs in his kernel. Other people test more so release with less bugs. Also Franco likes to put experimental stuff like 512MHz and 480MHz GPU clocks in, which dont even run on some peoples phones.
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That is why there are TWO builds. Milestone and nightly builds.
Milestone are for people who want stability, nightly builds are for people who want the newest and latest things.
Wakelock issues come from apps, the wakelock issue was already fixed. This is the purpose of nightlies, they are there to report bugs. If you don't like that then stick to Milestone builds. That is why these two releases are separated.
Sleep of Death is mainly caused by users who undervolt their phones. This is no way franco or the kernel dev's fault.
Broken wifi? Never had that bug. People experience this bug on other kernels as well. This isn't caused by franco's kernel.
512 MHz.. that is why there are TWO releases for nightlies. One is in 384 and one is in 512 MHz. Milestone builds are ALWAYS on stock clock because stability is #1 priority in those builds.
http://minooch.com/franciscofranco/Galaxy Nexus/nightlies/ (384 mhz folder at the bottom).
There is a reason why franco's kernel is the most popular kernel in Galaxy Nexus and he is a very well respected and known developer.

Thanks everybody for the returns.
But now i'm confused : should i wipe or not wipe ? If i wipe, will i loose my apps and data ?
If anything goes wrong, when i restore a nandroid backup, will the kernel be restored as well ?
Thanks !

thefunkyjoint said:
Thanks everybody for the returns.
But now i'm confused : should i wipe or not wipe ? If i wipe, will i loose my apps and data ?
If anything goes wrong, when i restore a nandroid backup, will the kernel be restored as well ?
Thanks !
Click to expand...
Click to collapse
You don't need to wipe your data partition. You may wipe your cache or dalvik-cache, but you won't lose any data doing that.
If anything goes wrong, you can just reflash your existing ROM's update.zip - it will restore the stock kernel without losing any information, and will be a lot quicker than a nandroid restore.

[Q] Kernel for Stock Plus v3.01?

Hello, now I have the rom: Stock Plus v3.01, but I want to know if there are any kernel support this rom that allows me to overclock the phone and add more modifications for performance and the like.

tazlooney89 said:
Hello, now I have the rom: Stock Plus v3.01, but I want to know if there are any kernel support this rom that allows me to overclock the phone and add more modifications for performance and the like.
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Look for gingertiny kernel, or incredikernel. You can find both here http://www.incredikernel.com/?page_id=10, along with incredicontrol and app for tweaking kernel settings.

thanks for your answer! one last question which of the 2 is more stable gingertiny kernel or incredikernel? Both are installed recovery is true?

tazlooney89 said:
thanks for your answer! one last question which of the 2 is more stable gingertiny kernel or incredikernel? Both are installed recovery is true?
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I only use gingertiny and havent tried incredikernel, but i hear others say there using it all the time. And yes they are flashed thru recovery.

Kernels Help

Hi all,
I am fairly new to the whole flashing kernels thing. I was looking through the Android Development threads and I saw the KT kernel and the IX kernel. I wanted to flash either of these kernels just for the improved battery life (from stock). Here are some of my questions:
1. What is the main reason to flash a new kernel.
2. Once I flash the kernel, What is a governed and do I need to constantly change it or set values? (asking cause I see others doing this)
3. Once I flash, lets say I want to go back to stock kernel, how can I do this?
4. Will I really get better battery life, or is it just for those who currently have horrible battery life.
5. Would it speed up the phone by any chance, reduce any lag?
Thanks in advance for helping!

http://forum.xda-developers.com/showthread.php?t=1369817.

thats an amazing link thanks for posting that i was wondering the same thing
but can someone tell us noobs the main reason for updating your kernel like Kt's kernel?

android2.0 said:
thats an amazing link thanks for posting that i was wondering the same thing
but can someone tell us noobs the main reason for updating your kernel like Kt's kernel?
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Well, I personally use KT's kernel for a few reasons: his Ktoonservative governor which is great for battery life yet equally responsive, the ability to undervolt to maximize battery and a cool running device, and the ROW scheduler which offers me superior performance.

imcol said:
Hi all,
I am fairly new to the whole flashing kernels thing. I was looking through the Android Development threads and I saw the KT kernel and the IX kernel. I wanted to flash either of these kernels just for the improved battery life (from stock). Here are some of my questions:
1. What is the main reason to flash a new kernel.
2. Once I flash the kernel, What is a governed and do I need to constantly change it or set values? (asking cause I see others doing this)
3. Once I flash, lets say I want to go back to stock kernel, how can I do this?
4. Will I really get better battery life, or is it just for those who currently have horrible battery life.
5. Would it speed up the phone by any chance, reduce any lag?
Thanks in advance for helping!
Click to expand...
Click to collapse
1. Some people flash a different kernel so they can overclock and under-volt. Also it may make the phone a bit snappier and get better battery life.
2. You don't need to constantly change the governor. You can try one for a few days and see how it goes. If youd like to experiment then you can try another to see if its any better/worse.
3. Depending on your ROM. Sometimes you can just boot in to recovery and re-flash the kernel you want. Again it depends on what kernel you flash to.
4.This is a tough one. Kernels act differently on each phone. You would need to try it out for yourself. When you flash a kernel it is suggested you give it a good 3 full battery cycles to really see how battery life is.
5. Yes, it may speed up the phone responsiveness a little. But again each phone reacts differently to each kernel.

The ability to control vibration, and the wide variety of i/o sched and govs is a main reason why I choose KT over any other kernel

still how can i revert
lets say i use kt and want to go back to stock kernel, how do i do this?

imcol said:
lets say i use kt and want to go back to stock kernel, how do i do this?
Click to expand...
Click to collapse
Reflash the rom and gapps

Kernel for stock kitkat 4.4.2?

Hi all, today I unlocked boot loader and rooted my nexus 7 2013 WiFi. At the moment I am sticking to stock ROM until I get more internet data from my ISP then I can flash a custom ROM.
Anyway what kernel would you recommended for stock KitKat 4.4.2 ROM in the mean time, or is it not worth changing and I'm better just waiting to flash custom ROM+kernel?
I was hoping for a more performance based one and would like to overclock both CPU and GPU, of course performance+battery contradict each other but if I could also have good-very good battery life and faster performance then even better.
Also what apps are you using for over clocking CPU/GPU?
Please suggest thanks

Ned_Flanders said:
Hi all, today I unlocked boot loader and rooted my nexus 7 2013 WiFi. At the moment I am sticking to stock ROM until I get more internet data from my ISP then I can flash a custom ROM.
Anyway what kernel would you recommended for stock KitKat 4.4.2 ROM in the mean time, or is it not worth changing and I'm better just waiting to flash custom ROM+kernel?
I was hoping for a more performance based one and would like to overclock both CPU and GPU, of course performance+battery contradict each other but if I could also have good-very good battery life and faster performance then even better.
Also what apps are you using for over clocking CPU/GPU?
Please suggest thanks
Click to expand...
Click to collapse
Best ROM/kernel threads are frowned upon at XDA.
As far as overclocking app, I use Tasker. I use it for setting the kernel tunables also.

kernel
I use elementalx with stock. Great performance and battery life.