Database Users

Stupid kernel question

i've found just enough answers about this to confuse me
I understand the difference between a kernel and a ROM, what i don't understand is compatibility. Unless there's an epic ROM (eg, CM) i usually prefer to stay rooted, but bloat free. but I've never had an android device that i can go as hack-crazy as i intend to do with my soon-to-be-arriving a500, and i'm planning on at least exploring some more in depth hacks.
So, my question is, how cross compatible are kernels. I know they're often designed for specific ROMS, i also know there are at least some instances where you can use one kernel across multiple ROMS, and that in some cases one ROM can accept multiple kernels. But... i guess i'm just looking for clarification. How exactly does ROM/kernel compatibility work? can i swap out the stock kernel for the fastest kernel, or is it more complicated than that?
thanks in advance guys.

mtmerrick said:
i've found just enough answers about this to confuse me
I understand the difference between a kernel and a ROM, what i don't understand is compatibility. Unless there's an epic ROM (eg, CM) i usually prefer to stay rooted, but bloat free. but I've never had an android device that i can go as hack-crazy as i intend to do with my soon-to-be-arriving a500, and i'm planning on at least exploring some more in depth hacks.
So, my question is, how cross compatible are kernels. I know they're often designed for specific ROMS, i also know there are at least some instances where you can use one kernel across multiple ROMS, and that in some cases one ROM can accept multiple kernels. But... i guess i'm just looking for clarification. How exactly does ROM/kernel compatibility work? can i swap out the stock kernel for the fastest kernel, or is it more complicated than that?
thanks in advance guys.
Click to expand...
Click to collapse
Most kernel threads will state which ROMs they're compatible with. Stick with what the OP of the thread states, and you should be OK, with exception of a few minor bugs here and there now and then.

[Developer Preview][Non-TouchWiz][HC][7310]NonTW HoneyComb[ROM]

News! I have a booting
build! It is quite smooth, but has some work to be done on it. I'
Here is what I have. I will build two versions, but one fully working one is a priority.
Built on HoneyComb 3.1 (planned upgrade to 3.2)
CWM-Flashable
Working:
- Camera
- All other stuff
Not Working
- Boot Animation (it just isn't these, something with the boot files)
- Wifi (Not compatible - this one is easy. Ill make it work tomorrow)
Cheers!
Instructions
You need to flash do a wipe, flash i through cwm and then install motleys kernel. Install it just after the install, otherwise you will get a bootloop. Here are the download links:
ROM:
http://hotfile.com/dl/148987432/474cec0/NoTW_HC_7310_0.1.zip.html
Mot's Kernel
http://hotfile.com/dl/148987800/309e587/motley_v1i_No_Touchwiz.zip.html
Remember, this is a test build

Report back your result. I really can't get to a Galaxy Tab at the moment. I'm really hoping to bring the first NON-TW ROM to the 8.9

I think you need to ask Motley on how to turn off TW patches to kernel.

Roger That

oh my word, this would be the greatest thing for the 8.9. i don't think we're going to get an ICS rom until Q3/Q4. You know how samsung is.

Yes. Hurrian, talked about it. All I need is motley's 3.1 kernel.

Some news. I got it to boot. Actually, I am in a bootloop without the bootanimation but with the samsung sound. My source uses some weird boot.img (boot.img.md5 Note: it is a boot.img, not a md5 checksum, i am sure). I will hopefully get a correct one tomorrow. At least it passed the Galaxy Tab 8.9 screen.

Booting! There you go! Download links updated!

How's the performance comparing with overcome 2.3?
Anyway thanks for your effort to the development of gt8.9!!!
Sent from my Nexus S using XDA App

Currently, they are about the ame. This is because this ROM is a pre alpha. In the next builds, the performance should be far above Overcome, simply because the absence of TouchWiz.

omg can't wait the hc3.2 release!!!!
thank you very much!!!
Sent from my Nexus S using XDA App

Yes. Wifi has proved itself to be hard. If anybody wants to oin my team, please PM me. You are welcome. I will release the 3.2 The very moment I get Wi-fi working. After that, I am planning to ressurect the honeyUI and add a seconfd build for users to choose.

you are using the motley 3 kernel right? do you know why the USB otg features wouldn't completely work like they do in Galaxian Soup? I plugged in a USB game pad but it didn't work

tommrazek01 said:
Yes. Wifi has proved itself to be hard. If anybody wants to oin my team, please PM me. You are welcome. I will release the 3.2 The very moment I get Wi-fi working. After that, I am planning to ressurect the honeyUI and add a seconfd build for users to choose.
Click to expand...
Click to collapse
You probably don't have the kernel modules in the right place. With older motley kernel the modules were in rom somewhere, but i don't remember exactly where. Ask motley about this.

That is because this is an old motley's kenel. Most of the new ones would simply get you into a bootloop. Worknig on that, but no support for that at the moment. Again, compatibility, but I am hoping to get that soon. It has been 7 Hours since I got this booting and working

has there been any more updates on this? This is truly the most exciting rom for this device.

wyatt23 said:
has there been any more updates on this? This is truly the most exciting rom for this device.
Click to expand...
Click to collapse
Thank you for saying that. I am still trying to work out Wi-Fi. I will move on very quickly when that works.

I'd love to hear that this project continue!!!

I'll try my best. I really don't want to see a discontiniued here.

when you release a working wifi rom, will you support the 7300 as well as the 7310?

Kernels

can someone list which kernels work with the 0.014 ICS update for the a500? im sick of the stock kernel that came with cm9, i believe and want to flash another one.
my tabs unlocked, cm9 installed, but is laggy so i think OC'ing it may help a tad.
ty in advanced as im new to the world of flashing kernels

ztotherad said:
can someone list which kernels work with the 0.014 ICS update for the a500? im sick of the stock kernel that came with cm9, i believe and want to flash another one.
my tabs unlocked, cm9 installed, but is laggy so i think OC'ing it may help a tad.
ty in advanced as im new to the world of flashing kernels
Click to expand...
Click to collapse
Currently, there are no known OC/UV kernels for the 500/501 running ICS. With the exception of TegraOwners, however it only works with the Tegraowner rom as best I know.

Moscow Desire said:
Currently, there are no known OC/UV kernels for the 500/501 running ICS. With the exception of TegraOwners, however it only works with the Tegraowner rom as best I know.
Click to expand...
Click to collapse
damn, i was hoping there was a kernel out there.. is it possible to take a kernel from another tegra2 device & flash it to the a500?
thank you btw for all your answers to my possible ridiculous questions!

ztotherad said:
damn, i was hoping there was a kernel out there.. is it possible to take a kernel from another tegra2 device & flash it to the a500?
thank you btw for all your answers to my possible ridiculous questions!
Click to expand...
Click to collapse
Look in my thread , they are not OC kernels , the tweaked ones but they improve smoothness big time.
One thing they are build for 1.031.00 based rom , they will work on older versions but it is possible that camera fails.

[Q] Most Stable ROM

Short Story: I need a very Stable & Capable ICS or JB ROM
Long Story: I have yet to flash my first custom ROM on the Acer a500. I updated to the official ICS then rooted and installed a custom recovery. The problem is that there are so many bugs in the stock ROM that get quite annoying. i.e. the screen flickers from time to time in apps, and the tablet has to be restarted. To fix them, I'd have to do a factory reset, but if Im going to lose my data, might as well Flash a new ROM.
I need it to be able to run the top games like Nova 3 Gta 3 Modern Combat 3, Shadow-Gun etc. as well as be able to run Office Applications. I understand you guys can't guarantee that they will work, but please let me know which ROM you found capable of running most apps smoothly. I use this tablet for work and entertainment, thus stability is important.
Thanks. :laugh::good:

Look in my signature, there is the most stable JB ROM but it is stll in testing!
The best ICS ROM is here:
MOD EDIT: Link Removed. Providing direct links to roms containing non-GPL kernels are against XDA rules.
In that forum you will find also Civato`s ICS ROM, it is also to find here on xda
m.

Just some info;
Posting links to roms containing non-GPL kernels are prohibited as per XDA rules. This is something most people know about already.
XDA has stable roms. However, if one chooses to install a non-hosted rom, one can't expect much support in the forums. Support would be better served at the authors site.
Cheers.
MD

bobiscool07 said:
Short Story: I need a very Stable & Capable ICS or JB ROM
Long Story: I have yet to flash my first custom ROM on the Acer a500. I updated to the official ICS then rooted and installed a custom recovery. The problem is that there are so many bugs in the stock ROM that get quite annoying. i.e. the screen flickers from time to time in apps, and the tablet has to be restarted. To fix them, I'd have to do a factory reset, but if Im going to lose my data, might as well Flash a new ROM.
I need it to be able to run the top games like Nova 3 Gta 3 Modern Combat 3, Shadow-Gun etc. as well as be able to run Office Applications. I understand you guys can't guarantee that they will work, but please let me know which ROM you found capable of running most apps smoothly. I use this tablet for work and entertainment, thus stability is important.
Thanks. :laugh::good:
Click to expand...
Click to collapse
First off, I would suggest installing the Unlocked V8 bootloader along with the most recent Recovery. This makes it easier for a lot of things.
Civato's ICS roms seem to be the most popular as far as ICS for the A500.
Waydownsouth's CM10 also seems to be okay as well, but is still inwork as with most CM10 roms.
Both roms will use the Godwarrior OC/UV kernel, so if you need more framerate, it's there.
Also, you can flash one of the stock rooted/deodexed versions and OC/UV kernel.
EZTerry also has an OC/UV kernel as well which runs good.
It all boils down to how the rom runs on "your" tablet. Contrary to popular belief, not all A500's are created equal. Some have different revision hardware.
My advice is to try a couple. See how they run.
MD

@moscow desire,
" XDA has stable roms. However, if one chooses to install a non-hosted rom, one can't expect much support in the forums. Support would be better served at the authors site. "
So why do you think, I posted the link from the authors side??
Definitely not to make you angry!
Diversity can only exist if you don't use only one information source!! Diversity and variety are necessery for free decelopment... .
m.

meduza2 said:
@moscow desire,
" XDA has stable roms. However, if one chooses to install a non-hosted rom, one can't expect much support in the forums. Support would be better served at the authors site. "
So why do you think, I posted the link from the authors side??
Definitely not to make you angry!
Diversity can only exist if you don't use only one information source!! Diversity and variety are necessery for free decelopment... .
m.
Click to expand...
Click to collapse
It's OK Mate. Sent you a PM.
The problem with doing support with a "non-hosted" rom, is that, due to the fact Thor uses non-GPL kernels, And some other encrypted things, a lot of people are unfamiliar with what issue it's been known to cause. Whereas most users here, use what XDA hosts, or they compile from GPL and Apache sources. Especially when it comes to kernels.
Which is why, if you run Thors rom, you will get better support at Thors site. Plain and simple. It's not that some people here will not try and help. I've done it myself, and quite successful depending on the issue. It's just that his roms are a bit different.
MD

[Q] Does a custom Rom come with a Kernel?

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.
Click to expand...
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.
Click to expand...
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