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Does a custom Rom come with a Kernel?
My specific case :
Nexus 7 32Gb Wifi
Android 4.1.2
Rom : PA 2.54
Kernel : Franco 3.1.10
My plan is to update to PA 2.99Beta6 which is based on Android 4.2.
I'd like to know if I'll also need to flash a new kernel as part of the upgrade process or if the PA 2.99Rom also includes the required kernel.
My guess is that it will be included with the Rom but figured it wouldn't do any harm to ask.
PMSL, how on earth do you think a ROM would actually work otherwise without a kernel.
Sorry but.... #facepalm
Sent from my Nexus 7 using xda app-developers app
My fear was that a Rom might use or expect the stock kernel, cheers for the answer though.
With that in mind, I wonder why Roms don't tend to ship with custom kernels. Franco's seems to be widely preferred to stock.
Mr_Loon said:
My fear was that a Rom might use or expect the stock kernel, cheers for the answer though.
With that in mind, I wonder why Roms don't tend to ship with custom kernels. Franco's seems to be widely preferred to stock.
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Click to collapse
most roms that are actually developed ship with custom kernels(like cm for example). roms that are just compiled from aosp source that have some mods added usually use the default android kernel(or stock roms with added mods). also, many roms ship with other custom kernels included. anyways, many others prefer trinity kernel
Mr_Loon said:
My fear was that a Rom might use or expect the stock kernel, cheers for the answer though.
With that in mind, I wonder why Roms don't tend to ship with custom kernels. Franco's seems to be widely preferred to stock.
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Click to collapse
Sorry I may have picked up on your question wrong, but many developers, well in fact most would use custom kernels, some prefer stock, stock kernels are generally very stable but quite limited in what they can do, for example take the pretty amazing Siyah on Galaxy S3 which gives you the ability to dual boot different ROM, s, i had AOSP as my main ROM and a Samsung ROM as my secondary ROM which was great for a while but they novelty wore off for me as I really only used the AOSP ROM, not to mention over clocking , etc, etc, etc.
I use Trinity Seven kernel on the Nexus and i find that the tablet seems to charge faster than with the CM kernel that comes with Liquid Smooth ROM.
Hope that answers some of your questions anyway
Sent from my Nexus 7 using xda app-developers app
So searching comes up with >1 year old threads and not really answering my question.
I got a used N4 recently for my daughter, and I want it to be as fast and stable as possible. I unlocked, then ADB flashed the currrent Google image and then rooted, made it ART runtime and applied the Z2 Bionic lib zip, applied current Franco kernel. Then I was halted in terms of is that the fastest?
Is that best combination which exists right now?
Is CM11 better?
I didn't really form a concluson of the Z2 Dalvik lib vs ART.
From what I know, this patch is currently faster than ART itself:
http://forum.xda-developers.com/nexus-4/general/4-4-4-4-x-qualcomm-optimized-dalvik-t2546120
Since ART is 'experimental' right now of course it lacks of improvements, but I am sure if Android L is released this October this wouldnt be the case anymore.
Also some Custom Roms like Cyanogenmod has its own optimized bionic libs, sometimes better than the stock ones or any patches. I highly recommend you to try this out, because than you dont have to search and compare no more.
In terms of kernel, I would not recommend you to use franco's kernel on a Custom Rom. Make sure to use any other kernel. This is just my personal experiences with franco's kernel and someone might call me too dumb to use this kernel, but why do I have so much trouble with franco and every other kernel runs fine like matr1x, ak or semaphore? Judge for yourself
CCody said:
From what I know, this patch is currently faster than ART itself:
http://forum.xda-developers.com/nexus-4/general/4-4-4-4-x-qualcomm-optimized-dalvik-t2546120
Since ART is 'experimental' right now of course it lacks of improvements, but I am sure if Android L is released this October this wouldnt be the case anymore.
Also some Custom Roms like Cyanogenmod has its own optimized bionic libs, sometimes better than the stock ones or any patches. I highly recommend you to try this out, because than you dont have to search and compare no more.
In terms of kernel, I would not recommend you to use franco's kernel on a Custom Rom. Make sure to use any other kernel. This is just my personal experiences with franco's kernel and someone might call me too dumb to use this kernel, but why do I have so much trouble with franco and every other kernel runs fine like matr1x, ak or semaphore? Judge for yourself
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Click to collapse
Right so I saw the claim that sticking with Dalvic and using the optimised Dalvik lib is faster but I gave up keeping track of it as too much "feels" and "benchmarks aren't representative" conclusion.
Noting to avoid Franco with custom ROMs. The custom one I did was CM and Franco warns to not use it!
nigelhealy said:
So searching comes up with >1 year old threads and not really answering my question.
I got a used N4 recently for my daughter, and I want it to be as fast and stable as possible. I unlocked, then ADB flashed the currrent Google image and then rooted, made it ART runtime and applied the Z2 Bionic lib zip, applied current Franco kernel. Then I was halted in terms of is that the fastest?
Is that best combination which exists right now?
Is CM11 better?
I didn't really form a concluson of the Z2 Dalvik lib vs ART.
Click to expand...
Click to collapse
the fastest.. whatever im using.
but really, these kinds of threads arent allowed on xda since you are asking us to compare roms. oh, ill clue you in a little, cm isnt even close to the fastest. and no, franco kernel isnt the fastest either.
Best ROM/kernel threads are not allowed on XDA
The best bet is to head over to the development sections and try some out for yourself and see which combination suits you best
Thread closed
Vote on a poll!
Do you guys prefer stock with stock kernel? Or stock with a custom one?
neither, custom rom and custom kernel.
simms22 said:
neither, custom rom and custom kernel.
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Click to collapse
This. But if I had to choose... custom kernel on stock
Sent from my Benzo'd Google N6 on VZ
DebianDog said:
This. But if I had to choose... custom kernel on stock
Sent from my Benzo'd Google N6 on VZ
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Click to collapse
Custom, but make sure you read up.. Some are more stable than others. I'm using faux 007 kernel on Terminus rom on my Sprint N6 and I haven't come across one single bug or anything bad at all. Day #2. :thumbup:
flashback7 said:
Custom, but make sure you read up.. Some are more stable than others. I'm using faux 007 kernel on Terminus rom on my Sprint N6 and I haven't come across one single bug or anything bad at all. Day #2. :thumbup:
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Click to collapse
there are bugs on terminus, just not any large bug. just a few tiny bugs, that most wont even notice
I run stock ROM, encrypted and rooted, with Franco Kernel.
flashback7 said:
Custom, but make sure you read up.. Some are more stable than others. I'm using faux 007 kernel on Terminus rom on my Sprint N6 and I haven't come across one single bug or anything bad at all. Day #2. [emoji106]
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Click to collapse
Yes I have been on four ROMs and three kernels, I believe. I am about to give hydra a spin soon
Sent from my Benzo'd Google N6 on VZ
Stock Rom Franco Kernel for me.
Sent from my Sprint Nexus 6 using XDA Free mobile app
Stock + Lean
flashback7 said:
Custom, but make sure you read up.. Some are more stable than others. I'm using faux 007 kernel on Terminus rom on my Sprint N6 and I haven't come across one single bug or anything bad at all. Day #2. [emoji106]
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Click to collapse
What radio you using or are you not having the LTE drop out?
Benzo rom + Vindicator kernel make my N6 the device it was meant to be. Hydra kernel is not bad either.
If you've taken the steps needed to flash a custom kernel, why not just nandroid your stock build and try some rom's? I'm assuming you have a custom recovery in place if you'r playing with kernels. You don't like it, restore back to stock in less then 5 minutes. I personally have not had any issues of note on the kernels and rom I mentioned. I did have issues on other combinations, but no harm done.
The functionality additions are light years ahead of what stock offers; custom drop down tiles, privacy settings, customizations, themes, etc.
jackpollard said:
Benzo rom + Vindicator kernel make my N6 the device it was meant to be. Hydra kernel is not bad either.
If you've taken the steps needed to flash a custom kernel, why not just nandroid your stock build and try some rom's? I'm assuming you have a custom recovery in place if you'r playing with kernels. You don't like it, restore back to stock in less then 5 minutes. I personally have not had any issues of note on the kernels and rom I mentioned. I did have issues on other combinations, but no harm done.
The functionality additions are light years ahead of what stock offers; custom drop down tiles, privacy settings, customizations, themes, etc.
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Everything ^^^ he mention.
Stock 47M + Zen9
Zen'd N6
Rooted stock LMY47D, unencrypted, LeanKernel oc/uc 2.4
Pretty much any kernel is going to give better battery life just out of the box before any tweaking. UV by -25 and u already are saving battery. Most kernels fix memory leaks and such too. Then there's the added benefit of extra optional features like OC/UC and wake gestures.
Wich ROM, mod, kernel or combination of two of them give me the best experience in android?? I m looking for an Android system fast, smooth and best battery life. Thanks to all
If something was the best, nothing else would be used as there's no point in using something that's inferior when you can get something better.
There is no best, I suggest you read each thread and pick one that suits your needs. Saying X ROM and kernel is the best is like saying a specific vehicle is the best...One may say a Ferrari and another may say an F-350. But who's right?
Some people like roms and kernels bloated with 1000 customization options filled with placebo "optimization and enhancements". Others prefer a clean, minimal ROM without all the useless bling that they'll never use.
P.S. there's probably 10 threads like these, and possibly 11 by next week that you could've read through. I'll just copy and paste this same post on the next one.
Sent from my Nexus 6P using Tapatalk
Currently using PureNexus nougat with ElementalX kernel. The experience is pretty good.
Using the phone for SMS/MMS, YouTube and web browsing. I can get ~ 5/6h sot with a full charge on WiFi and ~ 3h30 sot on 3g/LTE which is enough for me.
Also using custom CPU governor profile in EXKernel Manager helped me with battery life without affecting performance (at least not that I noticed). You can find more infos here:
https://forum.xda-developers.com/nexus-6p/general/guide-advanced-interactive-governor-t3290605
Hope that helps
I am using the stock ROM with the ElementalX Kernel. Very happy with the performance of the phone. I arrive at the end of the day with 40% battery on average
yamilmanzur said:
I am using the stock ROM with the ElementalX Kernel. Very happy with the performance of the phone. I arrive at the end of the day with 40% battery on average
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Click to collapse
Wich version of stock are using?? I was use that option but I had some issue with stock.
5.1 said:
Currently using PureNexus nougat with ElementalX kernel. The experience is pretty good.
Using the phone for SMS/MMS, YouTube and web browsing. I can get ~ 5/6h sot with a full charge on WiFi and ~ 3h30 sot on 3g/LTE which is enough for me.
Also using custom CPU governor profile in EXKernel Manager helped me with battery life without affecting performance (at least not that I noticed). You can find more infos here:
https://forum.xda-developers.com/nexus-6p/general/guide-advanced-interactive-governor-t3290605
Hope that helps
Click to expand...
Click to collapse
Thanks for your answer. I had a boot loop when I install pure Nexus, Gapps, ElementalX and super su. But I like this option. Wich Gapps recommend?
hpagliettini said:
Wich version of stock are using?? I was use that option but I had some issue with stock.
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Click to collapse
7.1.1 ROM stock
hpagliettini said:
Thanks for your answer. I had a boot loop when I install pure Nexus, Gapps, ElementalX and super su. But I like this option. Wich Gapps recommend?
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Click to collapse
Hi. Gapps included in the OP of thePureNexus thread. OenGapps will work too.
Another "best rom" thread? Seriously ?
Pure
F2FS + Dark ROM + FLASH kernel ! That's the best combination and I am a serial flasher
These people that are saying there isn't a best ROM, I don't really understand the reasoning behind this. There most certainly is a best ROM kernel combination. Otherwise all these ROMs and kernels would be exactly the same right? Sorry to say, some are better than others. This is just a fact.
If you want speed, smoothness, glass, breakneck speeds, great battery life, there really is one only choice.
Uber rom by Chad and faster kernel by Chad.
Why?
On f2fs, (trust me, you want f2fs) I have yet to find kernel or ROM combination that beats this.
Its the only rom that's built with GCC 6.3.1, and the only rom built with clang 3.9.1. Coupled with f2fs, this rom FLIES.
I have flashed every single ROM on this forum and then some, and I'm telling you this is the best combination you can possibly hope for:
https://temp.bbqdroid.org
NOTilyass said:
F2FS + Dark ROM + FLASH kernel ! That's the best combination and I am a serial flasher
Click to expand...
Click to collapse
How much sot do you have with this combination?
You flash f2fs + dark ROM + Gapps + flash kernel in one time?
TrainNanpaMaster said:
These people that are saying there isn't a best ROM, I don't really understand the reasoning behind this. There most certainly is a best ROM kernel combination. Otherwise all these ROMs and kernels would be exactly the same right? Sorry to say, some are better than others. This is just a fact.
If you want speed, smoothness, glass, breakneck speeds, great battery life, there really is one only choice.
Uber rom by Chad and faster kernel by Chad.
Why?
On f2fs, (trust me, you want f2fs) I have yet to find kernel or ROM combination that beats this.
Its the only rom that's built with GCC 6.3.1, and the only rom built with clang 3.9.1. Coupled with f2fs, this rom FLIES.
I have flashed every single ROM on this forum and then some, and I'm telling you this is the best combination you can possibly hope for:
https://temp.bbqdroid.org
Click to expand...
Click to collapse
Uber rom by Chad I definitely agree is the best. I tried using his faster angler but it caused problems with mods like viper4arise so I am sticking with flash kernel. Uber by Chad is definitely the best rom though and I have tried so many roms like pure nexus, resurrection remix, dirty unicorns, sixRom, lineage, cyanogenmod, nitrogen, Cortex and so many more.
Is the stock camera working on either Uber or Dark ROM with f2fs file system?
Thanks
There's no such thing as a best rom fact, but only best rom opinions, which isn't a good idea to ever discuss here. [emoji14]
As for battery, that all depends on you as a user to manager your battery life your way. I get 4+ SOT easily and I listen to a lot of music and text a lot.
As for what I'm using, I'm running ABC Rom with franco.kernel, root, and V4A. ?
Sent from my Nexus 6P using Tapatalk
TrainNanpaMaster said:
These people that are saying there isn't a best ROM, I don't really understand the reasoning behind this. There most certainly is a best ROM kernel combination. Otherwise all these ROMs and kernels would be exactly the same right? Sorry to say, some are better than others. This is just a fact.
If you want speed, smoothness, glass, breakneck speeds, great battery life, there really is one only choice.
Uber rom by Chad and faster kernel by Chad.
Why?
On f2fs, (trust me, you want f2fs) I have yet to find kernel or ROM combination that beats this.
Its the only rom that's built with GCC 6.3.1, and the only rom built with clang 3.9.1. Coupled with f2fs, this rom FLIES.
I have flashed every single ROM on this forum and then some, and I'm telling you this is the best combination you can possibly hope for:
https://temp.bbqdroid.org
Click to expand...
Click to collapse
In this link I download the Uber ROM, right?
And other thing, you say me I have to flash to f2fs first before install this ROM and kernel?? Or I don't have to flash previous?
DEVILOPS 007 said:
Uber rom by Chad I definitely agree is the best. I tried using his faster angler but it caused problems with mods like viper4arise so I am sticking with flash kernel. Uber by Chad is definitely the best rom though and I have tried so many roms like pure nexus, resurrection remix, dirty unicorns, sixRom, lineage, cyanogenmod, nitrogen, Cortex and so many more.
Click to expand...
Click to collapse
I'm using faster kernel (r63) with Viper for arise with no problems at all bro. What's your steps for flashing?
I'm using 2.4 alpha B.
TrainNanpaMaster said:
I'm using faster kernel (r63) with Viper for arise with no problems at all bro. What's your steps for flashing?
I'm using 2.4 alpha B.
Click to expand...
Click to collapse
I basically just wiped cache and dalvik/art cache and flashed the rom and kernel and all my mods. I also made sure to do stuff like rename audio effects and everything I did to make it work with flash. I use stable 2.4 deutronomy aroma installer. I was talking to someone else on this rom and kernel and he said he had the same problem too so it might be hit and miss or maybe you flashed it different than us. Please tell.me what you did to get it to work. Thanks
What partitions do you guys convert to f2s besides cache? Data as well? Everything else remains ext4?
Running stock has been great for me lately. Downgraded to 6.0.1 running Xposed for pixel mods. Amplify and greenify. With exkernel has been a great experience so far. Near 7h SOT yesterday. Will be going back to 7.1.1 soon, as the February update is out.. I heard lineage OS has good battery life. Will be trying that out soon in a few days.
Read the threads on XDA and good luck!!:good:
We have another post for ROM. Why do we not have another post for Kernel ?
As we can see, we have more than 5 kernels that are from XDA developer or someone else. But which one is really good for your ROM and which one still keep updating ?
I have been using OP5T for 2 months. Have used so many kernels but i still got stuck in those and do not know which is more stable. I am planning to use the kernel from Blu_Spark. Is that good ?
Post your favourite kernel and tell everybody why you use that. It will help newbie to pick what they want.
I am using Flash kernel at the moment but I have already tried Blu, franko, arter, ElementalX etc, but honestly for me it's difficult to see any difference since this phone have already a great battery life and great speed. On my previous phone (S8) the custom kernel gives a big advantage since the phone have tons of bloat and and isn't running stock like Android.
vvt4994 said:
We have another post for ROM. Why do we not have another post for Kernel ?
As we can see, we have more than 5 kernels that are from XDA developer or someone else. But which one is really good for your ROM and which one still keep updating ?
I have been using OP5T for 2 months. Have used so many kernels but i still got stuck in those and do not know which is more stable. I am planning to use the kernel from Blu_Spark. Is that good ?
Post your favourite kernel and tell everybody why you use that. It will help newbie to pick what they want.
Click to expand...
Click to collapse
I have tried Blu and Franco for now and both have been very good. I really think kernel performance depends on the combo with the ROM as well as your device. I'm on Liquid Remix with Franco currently but I may give Resurrection Remix a try with Flash. If I had more time, I'd flash every ROM with every kernel to get a feel for all the possibilities LOL. :good:
For me Franco and flash kernel are the Best.... Now with ob3 with Franco kernel
Enviado desde mi ONEPLUS A5010 mediante Tapatalk
Did the Franco improve battery or performance? Someone Tried the Boeffla?
At the moment, both Flash Kernel and RenderKernel are great options in my opinion. I have tried most of the other kernels on xda and if you are looking specifically for smoothness/speed, these are the two you should test first. I do not run battery cycles; everyones daily use scenario really differs too much.
Flash Kernel currently has some kernel features I need (Kcal support & wakelock blocker) while RenderKernel does not have these features quite yet. While it lacks in some features, RenderKernel is undoubtedly the smoothest kernel for 5T right now.
I am on a 5T with OOS 5.0.3.
I like Franco but recently some custom ROMs have WIFI cannot turn on problem after I flash Franco kernel.
:fingers-crossed:
(Don't blame any devs here just sharing.)
crashazz33 said:
At the moment, both Flash Kernel and RenderKernel are great options in my opinion. I have tried most of the other kernels on xda and if you are looking specifically for smoothness/speed, these are the two you should test first. I do not run battery cycles; everyones daily use scenario really differs too much.
Flash Kernel currently has some kernel features I need (Kcal support & wakelock blocker) while RenderKernel does not have these features quite yet. While it lacks in some features, RenderKernel is undoubtedly the smoothest kernel for 5T right now.
I am on a 5T with OOS 5.0.3.
Click to expand...
Click to collapse
Where can I download flash kernel?
mo123456789 said:
Where can I download flash kernel?
Click to expand...
Click to collapse
https://forum.xda-developers.com/oneplus-5t/development/op5t-flash-kernel-v2-15-1-t3729330/page34
I haven't really played around with Kernel choices much.
I use and appreciate the professionalism of ElementalX kernel.
With it's options to adjust for extreme brightness, it quickly became a favorite a couple years ago and I've just stuck with it since.
Now most devs are adding high brightness to their kernels.
I guess I can start checking other kernels out.
I do like that ElementalX stays very stockish, reliable.
I can pretty much flash it and feel confident nothing weird will pop up over the next few days.
CZ Eddie said:
I haven't really played around with Kernel choices much.
I use and appreciate the professionalism of ElementalX kernel.
With it's options to adjust for extreme brightness, it quickly became a favorite a couple years ago and I've just stuck with it since.
Now most devs are adding high brightness to their kernels.
I guess I can start checking other kernels out.
I do like that ElementalX stays very stockish, reliable.
I can pretty much flash it and feel confident nothing weird will pop up over the next few days.
Click to expand...
Click to collapse
ElementalX, Franco, and flash were all my go-to kernels back in the 6p days (just a few months ago, lol), so it's hard to pick, especially since they all ended up on the 5t. Right now I'm on exkernel though I am partial to flash. Battery life is amazing on all 3, but the overclock on ex just adds that extra bit of smoothness that I've never experienced before. Call it placebo but I just love this kernel (exkernel).
any more input?
im curious to know if fsync affects battery performance at all, can someone also test this out if you are on a kernel that enables disabling the fsync feature
virtyx said:
any more input?
im curious to know if fsync affects battery performance at all, can someone also test this out if you are on a kernel that enables disabling the fsync feature
Click to expand...
Click to collapse
Tried it but didn't notice any difference.
Technically it should improve performance when using the phone, but it won't be noticeable.
boeffla
simple and steady, close to stock for daily using.
blu_spark, always on the Fastlane. ?
Does flashing a custom kernel solves Google play services battery drain?
Do I need custom recovery and root to flash a custom kernel? I'm not willing to play with kernel adiutor so I'm not really interested in rooting
luws said:
Does flashing a custom kernel solves Google play services battery drain?
Do I need custom recovery and root to flash a custom kernel? I'm not willing to play with kernel adiutor so I'm not really interested in rooting
Click to expand...
Click to collapse
Custom kernel has nothing to do with google play services. You need custom recovery to flash a kernel, but most kernels for op5t are "flash & forget" which mean there is no reason to change the setting of the kernel.
Sent from my ONEPLUS 5T
vagkoun83 said:
Custom kernel has nothing to do with google play services. You need custom recovery to flash a kernel, but most kernels for op5t are "flash & forget" which mean there is no reason to change the setting of the kernel.
Sent from my ONEPLUS 5T
Click to expand...
Click to collapse
maybe not Google play services specifically, but with my latest phone (zuk z2), kernel was directly related to deep sleep
stock OOS/kernel has a serious issue with Google PS in terms of deep sleep. Besides that, I dont feel any need to flash a custom kernel. SOT is incredible already, and performance is really fluid.
luws said:
maybe not Google play services specifically, but with my latest phone (zuk z2), kernel was directly related to deep sleep
stock OOS/kernel has a serious issue with Google PS in terms of deep sleep. Besides that, I dont feel any need to flash a custom kernel. SOT is incredible already, and performance is really fluid.
Click to expand...
Click to collapse
If you are OK then there is no need to flash a kernel. If an app is crap (like Google services or facebook) the kernel can't do miracles and its not kernels job to control wakelocks of user apps
Sent from my ONEPLUS 5T
I keep changing between blu and new kernel
Not sure which to stick with but I think new kernel gives me a bit more battery