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does anyone here uses a custom rom with a stock kernel? will it still be good? i really do want to flash but i don't want things to get complicated. i just want to speed up the phone.
and with stock kernel everything is simple right? just flash the rom and use it, no other things needed.
I am one of the unlucky people that have a vibrant that cant handle an OC/UV kernel. So yes, every time I flash a custom rom, I flash a stock kernel. Generally speaking most roms I use ( bionix and master ) barely increase the benchmark scores of stock tw... though they do feel snappier because these rom chefs spend alot of time in polishing the user interface... if you want to make your device faster, try rooting it and installing a lag fix. If you have any other questions be sure to click the red text in my Sig.
You do not need a lag fix... too many issues stem from this.
s15274n said:
You do not need a lag fix... too many issues stem from this.
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i already flashed a fusion 1.1 stock kernel. i'm satisfied already.
Awesome, just making sure. I didn't agree with the lf suggestion.
If you've flashed Bionix Fusion 1.1 with JACS OC/UV ROM from stock, do you need to flash another kernel or does the ROM include the JACs kernel? Without SetCPU do you then run stock benchmarks?
3rd Q, are there issues flashing back to a custom ROM but with the standard kernel?
pathcafe said:
If you've flashed Bionix Fusion 1.1 with JACS OC/UV ROM from stock, do you need to flash another kernel or does the ROM include the JACs kernel? Without SetCPU do you then run stock benchmarks?
3rd Q, are there issues flashing back to a custom ROM but with the standard kernel?
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to your 3rd question, if you have a custom rom with a stock kernel you can flash back to stock rom without problems using odin.
Thanks. Plus found discussion of kernels under Vibrant Q&A under "Bionix fusion 1.1".
I have flashed Roms and Radios, but have not yet flashed a Kernel. Does this mean that my T-Bolt is using the stock Froyo Kernel, or was the Kernel replaced each time I flashed a Rom? Thanks in advance for your replies!
Each ROM comes with it's own kernel. Usually the one it comes with is the best fit but not necessarily. Not all kernels will work with every ROM. See your favorite ROM's thread to find out about kernel compatibility.
Sent from my HTC Thunderbolt
JBO1018 said:
Each ROM comes with it's own kernel. Usually the one it comes with is the best fit but not necessarily. Not all kernels will work with every ROM. See your favorite ROM's thread to find out about kernel compatibility.
Sent from my HTC Thunderbolt
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Thanks for helping me to better understand this!
If you're using gingerbread, there's only 2 kernels available for flashing. Imoseyon's, and Dreamkernel. Most will use one of these two. Synergy and Gingeritus3D use Ziggy's, which are generally custom built for the ROM and are the only kernels that will be fully functional with these ROMs. It is possible to extract the kernels from one of these ROMs and use it with another, but you will have issues with it. Unfortunately, Imoseyon hasn't been terribly up to date with his kernel, which is the source for dreamkernel and Ziggy's. Ziggy has been building kernels for years now and has kernels out for 4 or 5 devices and currently has the only custom kernels that are fully functional with the latest GB leak. I've toyed around with extracting it from Gingeritus3D Beta6, but frankly, I don't have the time or interest since Chingy's ROMs have been my daily drivers for about 2 years now. I do have an older Ziggy kernel that was extracted, and if you want to play with it, I can send you a download link.
loonatik78 said:
If you're using gingerbread, there's only 2 kernels available for flashing. Imoseyon's, and Dreamkernel. Most will use one of these two. Synergy and Gingeritus3D use Ziggy's, which are generally custom built for the ROM and are the only kernels that will be fully functional with these ROMs. It is possible to extract the kernels from one of these ROMs and use it with another, but you will have issues with it. Unfortunately, Imoseyon hasn't been terribly up to date with his kernel, which is the source for dreamkernel and Ziggy's. Ziggy has been building kernels for years now and has kernels out for 4 or 5 devices and currently has the only custom kernels that are fully functional with the latest GB leak. I've toyed around with extracting it from Gingeritus3D Beta6, but frankly, I don't have the time or interest since Chingy's ROMs have been my daily drivers for about 2 years now. I do have an older Ziggy kernel that was extracted, and if you want to play with it, I can send you a download link.
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IMO's aosp kernels are up to date.
fixxxer2008 said:
IMO's aosp kernels are up to date.
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Good point. Too bad AOSP makes me wanna bore holes in my head. Every time I pick up a phone with AOSP on it its set up different and works different! ...but its what the girlfriend likes so I flash the crap and walk away. I really need to get her doing it herself!
Hi, I've just a quick question regarding kernels (in general)
I'm currently running a JB ROM by TheBill, and it's running great. However, coming from my previous phone with a custom rom, I see there aren't many governers available. I would think that a custom kernel would do the trick, but would they work regardless of rom/OS version? Most of the ones I see seem to be for Gingerbread/Froyo, and I'm with Jelly Bean.
I didn't try this so I am not sure, but I think that kernels have their compatibilities with rom. So whatever kernel you are going to flash just read the kernel's details. Then you'll know what roms (cm7,cm9,cm10etc.) it will support. And I hope that you know kernels are phone specific.
Atrix 4G, CM7 based TopSmarts 1.3 rom, Faux123 1ghz kernel.
If I m helpful dont hesitate to thank me.
Don't try to mix and match kernels unless you know what you're doing. It will probably not work as expected, very likely not at all.
There's probably a reason for the lack of governors in some kernels, don't you think?
sumit77seo said:
I didn't try this so I am not sure, but I think that kernels have their compatibilities with rom. So whatever kernel you are going to flash just read the kernel's details. Then you'll know what roms (cm7,cm9,cm10etc.) it will support. And I hope that you know kernels are phone specific.
Atrix 4G, CM7 based TopSmarts 1.3 rom, Faux123 1ghz kernel.
If I m helpful dont hesitate to thank me.
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Well I'm running CM10 and it seems like most of the kernels haven't been developed specifically for 4.1, which is why I brought up the question.
ravilov said:
Don't try to mix and match kernels unless you know what you're doing. It will probably not work as expected, very likely not at all.
There's probably a reason for the lack of governors in some kernels, don't you think?
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Well, I was wondering if I could get a bit of a power boost with a kernel supporting overclocking, but if I do try and install a kernel that doesn't work out, a Nandroid backup should restore my previous kernel as well?
DillonBladez said:
Well I'm running CM10 and it seems like most of the kernels haven't been developed specifically for 4.1, which is why I brought up the question.
Well, I was wondering if I could get a bit of a power boost with a kernel supporting overclocking, but if I do try and install a kernel that doesn't work out, a Nandroid backup should restore my previous kernel as well?
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Yes, Nandroid backup will restore your kernel.
Sent from my MB860 using xda app-developers app
If I was to install, say, the Liquid Smooth ROM onto my i717 (I have a good amount of experience with flashing ROMs, so that much I know,) specifically, the KitKat version, it lists kernels in the download links. Would these kernels be included with the ROM files themselves, i.e. install at the same time as the ROM, or would I have to flash the kernel separately before flashing the ROM? Thank you VERY much in advance
Reinstalled said:
If I was to install, say, the Liquid Smooth ROM onto my i717 (I have a good amount of experience with flashing ROMs, so that much I know,) specifically, the KitKat version, it lists kernels in the download links. Would these kernels be included with the ROM files themselves, i.e. install at the same time as the ROM, or would I have to flash the kernel separately before flashing the ROM? Thank you VERY much in advance
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The thread should tell you if the kernel is baked into the Rom our not but the stock kernel usually comes with it. I'm pretty sure you're talking about a beefed up kernel tho. You'll just have to read the thread and if you're still not clear about it, ask in that thread to be sure.
Sent from my HTC0P3P7 using Tapatalk
Reinstalled said:
If I was to install, say, the Liquid Smooth ROM onto my i717 (I have a good amount of experience with flashing ROMs, so that much I know,) specifically, the KitKat version, it lists kernels in the download links. Would these kernels be included with the ROM files themselves, i.e. install at the same time as the ROM, or would I have to flash the kernel separately before flashing the ROM? Thank you VERY much in advance
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Click to collapse
there is always a kernel included with a rom. most alternate kernels are made and or flashed to combat a side effect or incompatibility with some folks devices. its not that provided kernel doesn't work, just that every device is different and the alternates can sometimes be more compatible.
however, I would suggest you give the original kernel a chance to settle, at least a day if not two. if it just flat out is not working for you, then flash an alternate onto the rom. wipe you caches ( not factory) flash kernel by itself and your good
never want to discount reading here as Gimmeitorilltell suggests. reading educates you and puts you in a better position to help yourself first.
Reinstalled said:
If I was to install, say, the Liquid Smooth ROM onto my i717 (I have a good amount of experience with flashing ROMs, so that much I know,) specifically, the KitKat version, it lists kernels in the download links. Would these kernels be included with the ROM files themselves, i.e. install at the same time as the ROM, or would I have to flash the kernel separately before flashing the ROM? Thank you VERY much in advance
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Click to collapse
In general stick with the kernel that comes with a ROM unless you have a reason to change, like stability, overclocking, etc... but you do flash the kernel after the ROM; anytime after the ROM flash really. You don't need a clean flash before kernel switch.
The dev probably did not test his/her ROM with every kernel possible so if you want support your best bet is to be on the kernel included. For the 1st install of a ROM if you are unsure you should definitely use included kernel; as sometimes you just can't predict what changing it will do.
That said there many of us do switch kernels when installing updates, I certainly do. There are not alot of kernels for our phones as only a dedicated few devs continue to support the Note but you have a few choices. All kernels I've seen allow performance/governor control to some degree. If you read through the various ROM threads you'll find that some kernels are preferred by users but for the most part kernels like Uber work well with most ROMs.
P0llution's ROM patch allows you to switch kernels after flashing a ROM (BeanStalk, LiquidSmooth, etc....) and even before 1st boot. It also has patches for various KK problems. It is in the Beanstalk thread 1st post.
Thank you so much for your replies! Installed LS and flashed Uber kernel and running with no issues.
Sent from my SAMSUNG-SGH-I717 using Tapatalk
So I've tried a bunch of different ROMs (CleanROM, Alliance, Beans, CM, OMNI, "Stock", probably more), but I've never really understood kernels. It seems some custom ROMs have a kernel built in (or several to choose from via Aroma), while others do not. Right now I'm running AOKP (4.4.2) with the kernel from OMNI (3.0.64-OMNI-g5f47648), presumably because that was the previous ROM I flashed with a kernel. I'm not too concerned with customization, more with stability.
I've been having a few minor bugs and crashes and I'd like to try perhaps the stock kernel to see if that might help, but I have some questions:
1) Does it matter when flashing a kernel whether the ROM is TW or AOSP?
2) Are there multiple versions of kernels that correspond with the Android version of the ROM?
3) What's the best/easiest way to flash a kernel, presumably through the custom recovery like a ROM?
4) Where can I find the stock kernel? I found this thread (http://forum.xda-developers.com/showthread.php?t=2610870) with the stock MJ9 kernel, but going back to my first two questions I'm not sure if it would work with my current ROM.
Thanks ahead of time for any insight anyone can provide.
michaellasalle said:
So I've tried a bunch of different ROMs (CleanROM, Alliance, Beans, CM, OMNI, "Stock", probably more), but I've never really understood kernels. It seems some custom ROMs have a kernel built in (or several to choose from via Aroma), while others do not. Right now I'm running AOKP (4.4.2) with the kernel from OMNI (3.0.64-OMNI-g5f47648), presumably because that was the previous ROM I flashed with a kernel. I'm not too concerned with customization, more with stability.
I've been having a few minor bugs and crashes and I'd like to try perhaps the stock kernel to see if that might help, but I have some questions:
1) Does it matter when flashing a kernel whether the ROM is TW or AOSP?
2) Are there multiple versions of kernels that correspond with the Android version of the ROM?
3) What's the best/easiest way to flash a kernel, presumably through the custom recovery like a ROM?
4) Where can I find the stock kernel? I found this thread (http://forum.xda-developers.com/showthread.php?t=2610870) with the stock MJ9 kernel, but going back to my first two questions I'm not sure if it would work with my current ROM.
Thanks ahead of time for any insight anyone can provide.
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1) Does it matter when flashing a kernel whether the ROM is TW or AOSP?
Yes. TW and AOSP kernels are different.. The only one, that I believe, that can be used with both is Devil kernel for Dual Booting
2) Are there multiple versions of kernels that correspond with the Android version of the ROM?
Yes. Usually every version of android that gets updated.. the kernel does as well
3) What's the best/easiest way to flash a kernel, presumably through the custom recovery like a ROM?
Yes you can flash kernels through a custom recovery. Most of the time they are included with the Rom that you flash. A lot of the custom ones out have flashable zip for you to flash them through a recovery.
4) Where can I find the stock kernel? I found this thread (http://forum.xda-developers.com/showthread.php?t=2610870) with the stock MJ9 kernel, but going back to my first two questions I'm not sure if it would work with my current ROM.
No this will NOT work with a AOSP rom.. The kernel will be specific to that ROM and every other TW 4.3 ROM, but NOT AOSP
lacoursiere18 said:
1) Does it matter when flashing a kernel whether the ROM is TW or AOSP?
Yes. TW and AOSP kernels are different.. The only one, that I believe, that can be used with both is Devil kernel for Dual Booting
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Thanks for the explanations, that helps tremendously. I'm confused now, however, because several people on the AOKP thread (http://forum.xda-developers.com/showthread.php?t=2453566) claim to be on "stock kernel". Is there a stock kernel for AOSP that I'm missing?
michaellasalle said:
Thanks for the explanations, that helps tremendously. I'm confused now, however, because several people on the AOKP thread (http://forum.xda-developers.com/showthread.php?t=2453566) claim to be on "stock kernel". Is there a stock kernel for AOSP that I'm missing?
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Yea the one that flashes with AOKP.. loll
lacoursiere18 said:
Yea the one that flashes with AOKP.. loll
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Well that's what I thought, but why then would I be using an OMNI kernel (3.0.64-OMNI-g5f47648) when I have flashed the last three AOKP nightly ROMs that have come out? Or am I missing something here?
michaellasalle said:
Well that's what I thought, but why then would I be using an OMNI kernel (3.0.64-OMNI-g5f47648) when I have flashed the last three AOKP nightly ROMs that have come out? Or am I missing something here?
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Maybe he uses that kernel.. AOSP kernels, I believe are pretty similar.. I may be wrong, I am by NO MEANS a kernel guru..I would open you zip of your ROM (AOKP) and take a peak.. if there is a boot.img than it flashes a kernel.. and if your says OMNI then thats the kernel the dev has used..
Stock
If I'm on the stock rom and want to go back to the original kernel can I just restore the boot img in recovery?
nealman said:
If I'm on the stock rom and want to go back to the original kernel can I just restore the boot img in recovery?
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Should be able to if you back it up previously.. but make sure it is same rom.. TouchWiz for TouchWiz.. AOSP for AOSP
lacoursiere18 said:
Should be able to if you back it up previously.. but make sure it is same rom.. TouchWiz for TouchWiz.. AOSP for AOSP
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Thank you sir. It worked just fine.
I have a noob question, I'm currently using n3bula 3.9 custom rom and it's been running fine for a while. I noticed that users chose the agni kernel whereas I chose the stock one. So my question is, is it possible to flash just the kernel from recovery without losing my data? I've spent so much time and effort customizing my phone, therefore, I just want to change the kernel. Any help will be appreciated. Thanks.
yazalsaidi said:
I have a noob question, I'm currently using n3bula 3.9 custom rom and it's been running fine for a while. I noticed that users chose the agni kernel whereas I chose the stock one. So my question is, is it possible to flash just the kernel from recovery without losing my data? I've spent so much time and effort customizing my phone, therefore, I just want to change the kernel. Any help will be appreciated. Thanks.
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I would think that as long as it doesn't break anything you should be fine. Probably do a backup first if you're worried about it.
Thanks for the response Michael, however, that was the response I was dreading! I'm actually worried I'll lose my WhatsApp and Viber accounts because even if I backed up my data, I'd still have to register my old WhatsApp and Viber numbers all over again which I don't have anymore.. ??