Develop Bugs

[Q] Do you usually flash a kernal before or after the rom?

Hi guys,
It's been so long since I have flashed a new kernal, is it better to flash them before or after you flash a rom?
are there any recommendations you fine XDA members have for kernals if I want to use it with the latest AOKP
Thanks for the help!

Since most roms come with their own kernel, I flash the Rom first, then whichever kernel I plan on using.
Sent from my Galaxy Nexus using XDA

boot into recovery.
wipe wipe wipe
flash rom
flash gapps is needed
if want, flash desired kernel
reboot.
wait for all apps to sync,
if needed, reboot into recovery and flash a theme.
Sent from my Galaxy Nexus using Tapatalk

Thanks for the help!

MarcMaiden said:
Thanks for the help!
Click to expand...
Click to collapse
np
Sent from my Galaxy Nexus using Tapatalk

Kernel is always after the rom.
Rom's install a kernel themselves that will completely overwrite any kernel you had set.
I use LeanKernel. And stick to the stable versions.
But that's my preference. You'll have to flash a few to decide.
Kernel testing itself is a bit of a bore. You need to test each kernel for at least a full battery cycle to see how it responds for you.
Also keep in mind that you can tweak kernel settings like color control, sound control, undervolting, clock speeds, and cpu governors if you want more customization.

After the rom ... roms contain kernels so it overwrites any kernel installed already ...
Don't forget to wipe your Davlik Cache before flashing your kernel

Please Suggest a good order
custom Rom
Super Su
Gapps
custom kernel
or whichever order is good after ROM..?!!

How to tweak a kernel?
Jubakuba said:
Kernel is always after the rom.
Rom's install a kernel themselves that will completely overwrite any kernel you had set.
I use LeanKernel. And stick to the stable versions.
But that's my preference. You'll have to flash a few to decide.
Kernel testing itself is a bit of a bore. You need to test each kernel for at least a full battery cycle to see how it responds for you.
Also keep in mind that you can tweak kernel settings like color control, sound control, undervolting, clock speeds, and cpu governors if you want more customization.
Click to expand...
Click to collapse
GREETINGZ JUBA
Would just like 4 u 2 know that I most sincerely appreciate the knowledge that u put down in ur post, I found it 2 be most insightful & madly helpful. Now, as for that kernel tweaking u mentioned, wut is the tweaking process?, & where is the kernel located?, & lastly, how would I navigate 2 it'z location? Thx a mill in advance my lady peace. P.S. Luv the name.

Help with Unofficial CM9 for supersonic

Hi I'm new to the xda and I'm wondering how to flash CM9 unofficial incremental 6-27 I know how to flash but the person who made he said flash the stocked kernel please help a video would be great

lreyes15 said:
Hi I'm new to the xda and I'm wondering how to flash CM9 unofficial incremental 6-27 I know how to flash but the person who made he said flash the stocked kernel please help a video would be great
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The incremental update is not the full ROM, they're just small updates for phones already running the ROM. The full ROM will be about ~100+ MB. Also, you will need to have an unlocked boot loader and a custom recovery. Once you have that knocked out just Download the ROM and put it in your SD card. Make sure you wipe all data after you make a backup of your current ROM. Finally, Flash the ZIP and reboot your phone. One more thing, with the CM9 ROM, you need to download the ICS GAPPS so you have the Market and etc. Enjoy.

css911 said:
The incremental update is not the full ROM, they're just small updates for phones already running the ROM. The full ROM will be about ~100+ MB. Also, you will need to have an unlocked boot loader and a custom recovery. Once you have that knocked out just Download the ROM and put it in your SD card. Make sure you wipe all data after you make a backup of your current ROM. Finally, Flash the ZIP and reboot your phone. One more thing, with the CM9 ROM, you need to download the ICS GAPPS so you have the Market and etc. Enjoy.
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Click to collapse
I know that I said I know how to flash and I just want to know step by step on flashing incremental I have the full rom and I have everything ready but I don't get the part about stocks kernel? I know what kernel is I just want to know what he means by stocked kernel as in the sence kernel or a different kernel

The stock kernel is the kernel included with the rom. If you have flashed a different kernel you must find out which kernel was included with the version of cm9 you are running and download to SD card, then flash. Then flash incremental. Also do not skip incremental. Flash in order of date after your rom download. Example rom- 6272012 incremental-6282012.
I feel more like I do now then I did then.

Thanks
Sent from my PC36100 using xda premium

lreyes15 said:
Thanks
Sent from my PC36100 using xda premium
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Try out the Mason kernels and see how they treat you. I think the JMZ CM9 Kernel is the Mason kernel. Also, look for the unreleased Mason kernels as they might include new performance fixes and possibly hardware fixes. I heard a rumor of WiMAX hitting CM9.

lreyes15 said:
I know that I said I know how to flash and I just want to know step by step on flashing incremental I have the full rom and I have everything ready but I don't get the part about stocks kernel? I know what kernel is I just want to know what he means by stocked kernel as in the sence kernel or a different kernel
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Click to collapse
JMZ stated that if you flash a custom kernel after flashing a nightly ROM you will need to flash the SAME custom kernel after flashing the incrementals I believe he has gone back to the evervolv kernel on latest ROMS for compatibility issues
sent from a rooted EVO 4G running Radiance RLS-ONE SENSE 3.5 Anthrax kernel infected!!!!

Need help picking a ROM / kernel

I've rooted my HTC Evo 4G (not LTE). I tried to set up a swap partition and learned that i need a different kernel. Regardless of whether or not i use swap memory, I'd still like to find a good ROM/Kernel. I'd love ICS, but they all say that 4g and the camera doesn't work yet. I have trouble finding the most up to date information. Recommendations on ROMS / Kernels / combinations?

trissypissy said:
I've rooted my HTC Evo 4G (not LTE). I tried to set up a swap partition and learned that i need a different kernel. Regardless of whether or not i use swap memory, I'd still like to find a good ROM/Kernel. I'd love ICS, but they all say that 4g and the camera doesn't work yet. I have trouble finding the most up to date information. Recommendations on ROMS / Kernels / combinations?
Click to expand...
Click to collapse
That's akin to asking what car with what engine is the best. You'll get 100's of different answers, so here's mine
Decks Reloaded v.44 with Mason .15 kernel...see my sig.

Veyka will close this thread soon... No doubt about it. Just flash them all and see what YOU like best!
Sent from my PC36100 using xda app-developers app

MIKESTONY said:
That's akin to asking what car with what engine is the best. You'll get 100's of different answers, so here's mine
Decks Reloaded v.44 with Mason .15 kernel...see my sig.
Click to expand...
Click to collapse
Okay, I found the kernel ... now I need to find the rom, right? because if I flash the kernel into the stock rom it will freak out ... so it's just a matter of executing two zips from recovery, the rom then the kernel? or am i forgetting something?

trissypissy said:
Okay, I found the kernel ... now I need to find the rom, right? because if I flash the kernel into the stock rom it will freak out ... so it's just a matter of executing two zips from recovery, the rom then the kernel? or am i forgetting something?
Click to expand...
Click to collapse
As long as the kernel matches the stock rom you can use it. It needs to be a git gingerbread sense kernel of you are on 2.3.3 or 2.3.5 stock if you're on 2.2 stock needs to be a froyo kernel. If you go to something like cm7 or decks reloaded, anything aosp based make sure you use an aosp gingerbread kernel. If you try ics and want a custom kernel or jb make sure to use matching kernels or you'll end up in a bootloop and need to reflash the rom to fix the kernel
Edit: when flashing make sure to do the proper wipes. For a rom wipe everything but the SD card, for a kernel or a modification wipe only cache and dalvik cache. When flashing a rom and a kernel at the same time, wipe everything but SD for rom then wipe.cache and dalvik and flash the kernel
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device

-EViL-KoNCEPTz- said:
As long as the kernel matches the stock rom you can use it. It needs to be a git gingerbread sense kernel of you are on 2.3.3 or 2.3.5 stock if you're on 2.2 stock needs to be a froyo kernel. If you go to something like cm7 or decks reloaded, anything aosp based make sure you use an aosp gingerbread kernel. If you try ics and want a custom kernel or jb make sure to use matching kernels or you'll end up in a bootloop and need to reflash the rom to fix the kernel
Edit: when flashing make sure to do the proper wipes. For a rom wipe everything but the SD card, for a kernel or a modification wipe only cache and dalvik cache. When flashing a rom and a kernel at the same time, wipe everything but SD for rom then wipe.cache and dalvik and flash the kernel
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device
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Click to collapse
Okay, I ended up installing cyanogenmod 7.2 ... which is a "rom," right? now i see these kernels ... right now looking at tiamat-dev dot com / supersonic ... this would work with the rom right? and what would change by installing this kernel? and which one would i want to download from that list? sorry

trissypissy said:
Okay, I ended up installing cyanogenmod 7.2 ... which is a "rom," right? now i see these kernels ... right now looking at tiamat-dev dot com / supersonic ... this would work with the rom right? and what would change by installing this kernel? and which one would i want to download from that list? sorry
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Click to collapse
Yes cm7.2 is a rom, I always used tiamat 4.1.0 on cm7.2. The kernel will add different governors, clockspeeds for overclocking, change the scheduler and allow for undervolting. The kernel is what allows the rom to talk to the hardware and vice versa, it contains all of the drivers for the hardware.
We are legion, for we are many.
Sent from the DarkSide of the GalaXy with a MEK device

CLOSED
STOP CREATING THESE POINTLESS THREADS
IT CREATES A ROM WAR AND NEXT TIME I WILL START INFRACTING ALL THAT RESPOND AS WELL AS THE PERSON THAT CREATED IT

How do i use a rom with any kernel?

Hey all, i've been running through ROMs here going back and fourth trying to find the best one for me. And so far i love a couple of ROMS, but the only ROM where i get data speeds that are good is Snipers Lightweight ROM using EL29 modem and agats fl27 repack kernel. I want to be able to use this Kernel and modem on other ROMS (the blu kuban for instance), but it seems most of ROMs require a certain kernel. Is there anyway around this? so i can use whatever kernel i want on any ROM?

mindstate said:
Hey all, i've been running through ROMs here going back and fourth trying to find the best one for me. And so far i love a couple of ROMS, but the only ROM where i get data speeds that are good is Snipers Lightweight ROM using EL29 modem and agats fl27 repack kernel. I want to be able to use this Kernel and modem on other ROMS (the blu kuban for instance), but it seems most of ROMs require a certain kernel. Is there anyway around this? so i can use whatever kernel i want on any ROM?
Click to expand...
Click to collapse
I don't think so. As you know, a kernel is like the base and the bridge between hardware( CPU,etc...) and apps. So if the rom isn't made for a specific kernel, the phone won't boot up

Yes you should be fine. The aroma installer included in Lightweight even has several different kernels to pick from, as they're all for ICS TouchWiz (like Blue Kuban ROM).
Now, if you're using a repack (like fi27), you won't have all the extra tweaking/over/underclocking options like you would from a custom source-built one. But if all you really care about is data speed then there should be no problem.
Trolling from my Cricket-flashed Galaxy S2 E4GT using Tapatalk 2

(Q) Which Kernel?

Which kernel is best and most stable to use with stock ROM as I'm new to this device just seeing what other users opinions are that have been using it for some time.
Also does Odin have to be used for flashing is can it be done threw the standard procedure of going into recovery and flashing via install zip?
Thanks in advance
Sent from my GT-I9195 using Tapatalk

Most stable is the kernel by arco68 made for rooted stock roms.
Yes, some kernels can be flashed via CWM provided they are the correct format.

Whosat said:
Most stable is the kernel by arco68 made for rooted stock roms.
Yes, some kernels can be flashed via CWM provided they are the correct format.
Click to expand...
Click to collapse
Would you be able to link that kernel thread as the 1 I have found closest to that was 1 based on arco68 kernel.
Thanks again for the help and responses much appreciated.
Sent from my GT-I9195 using Tapatalk

Scopewiz said:
Would you be able to link that kernel thread as the 1 I have found closest to that was 1 based on arco68 kernel.
Thanks again for the help and responses much appreciated.
Sent from my GT-I9195 using Tapatalk
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Click to collapse
http://forum.xda-developers.com/showthread.php?p=43622999
Optional: Flash GT-I9195_Kernel_v1.zip to use a custom stock kernel, which might fix battery drain for some.
Kernel changelog: https://github.com/arco/android_kernel_samsung_msm8930-common/commits/stock
Click to expand...
Click to collapse
Its an attachment in the post

I noticed that before as I used that guide for rooting but was looking for a kernel with a few more features but if this is the best to date I'll stick with that, thanks again.
Sent from my GT-I9195 using Tapatalk

You're looking for stability so that's the most stable.
I'm personally using f4ktion's 1.3.6 but that version is currently only for AOSP roms. Sticking with Samsung stock roms you only have f4ktion's 1.3.0 to play with but some have reported that its features (BLN) are not working.

Vikinger Kernel is based on arcos modified stock kernel with the extra of bln-feature. Should be as stable as arcos. Never faced unstability and I am using it since release

junkyde said:
Vikinger Kernel is based on arcos modified stock kernel with the extra of bln-feature. Should be as stable as arcos. Never faced unstability and I am using it since release
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Are you talking about his kernel? http://forum.xda-developers.com/showthread.php?p=47893414
Sent from my GT-I9195 using Tapatalk

yes

My favourite would be F4ktion's, and I spent the last week on it.
Unfortunately the wifi seems to be broken - works at first, but sooner or later (typically within a few hours) something happens, phone becomes hot, wifi can't be switched off, and everything becomes laggy.
Battery will last two-three hours once that happens and the phone will blame wifi for 90% of battery usage.
Only reboot fixes it, until it happens again.
During the last week I was experimenting with different solutions such as using stock's configuration files (the stuff under etc/firmware/wlan/prima) as well as trying to replace the prima kernel module from other kernels. Nothing helped.
(well, most of my attempts made wifi not work lol, the few that worked didn't fix the problem)
If anyone has any ideas what else to try, it would be great -- the kernel was great otherwise (after lowering minimal frequency down to 160-ish MHz battery prediction exceeded 6 days, and that's before I undervolted anything).
In the meantime I'm on Vikinger's kernel - not because I use its features but because installing it was the easiest way to get wifi working again,

Does Vikinger's custom kernel support performance control where you can change clock support etc?
Sent from my GT-I9195 using Tapatalk

Scopewiz said:
Does Vikinger's custom kernel support performance control where you can change clock support etc?
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Click to collapse
No
No clock change beyond what stock has, no undervolting.
It doesn't have any interesting governors either.

like I said. It's just arcos kernel with the extra of bln support. you could have get that information from the first post of the vikinger kernel thread. all features are mentioned there