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How edit a kernel?

I'm using MIUI rom for my Nexus S. I have tested Netarchy kernel, the most complete of his genre, but it give me stability issues.
I want take the default android kernel and add some non-invasive features like overclock, bln, etc. wich let's MIUI run stable.
My problem is that i don't know how i can edit a kernel. Unpack .img files, decompile and recompile them.
Anyone can help me with a small introduction?
Thanks a lot.

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dario3040 said:
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seems like a reasonable request :S

I have to laugh?

fede91it said:
I'm using MIUI rom for my Nexus S. I have tested Netarchy kernel, the most complete of his genre, but it give me stability issues.
I want take the default android kernel and add some non-invasive features like overclock, bln, etc. wich let's MIUI run stable.
My problem is that i don't know how i can edit a kernel. Unpack .img files, decompile and recompile them.
Anyone can help me with a small introduction?
Thanks a lot.
Click to expand...
Click to collapse
first of all, wrong section..even though it is about "development"...still a question
anyways, there is no way to "edit a kernel" they have to be built from source. changes need to be made before you compile it.
there are many threads here on xda with tutorials -search >compile kernel<
a simple way to start is seach >mkbootimg< normally this would be compiled from source as well but there are a few threads that people have posted tutorials of the ins and outs and have packages for download.
basically with that you can "split" a boot.img separating the ramdisk (specific to the rom) and the kernel...then merge "your" miui ramdisk with a working (or built for other rom) kernel

You can start here:
http://forum.xda-developers.com/showthread.php?t=1039854

Moved to Q&A.

[Q] CPU Temp Problem

I'm on Promethius rom 1.5 and kernel 1.5+ (both flashed after full wipe). When the CPU temperature gets below 25°C, my phone gives an error like "please replace your simcard and reboot the phone" and the signal goes away . And if I warm up the cpu with playing some game or something for a while and after that turn on/off flight mode, signal comes back and phone starts to work normally. This might become a serious problem in the following months with the autumn and winter.
Did this happen to anybody else? What can be the problem?
I checked the problem in my refrigerators freezer section and happened again just before I post this. Can somebody else try it and tell the results?

why open new thread?
i can ask help into the thread original! :Cool:

I also mentioned this in Promethius thread but it can be irrelevant with the rom or kernel.

try another rom

Of course I will.
But can you cool down your phone to see what happens in this time for example?

you just wait... at 25°C all is ok.
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Thanks a lot, I flashed ThiaiZ rom and kernel and will try with this.

Happened again with Thiaiz Rom and v0.6 kernel. This time around 25°C.
It says "Replace your simcard and reboot".

That's so strange. I don't know what happen but is not good.send to the LG customer.
Inviato con Lg P920 powered by SPEEDYrom 3Dmax v.2.0

Yes strange. My phone overheats occasionally but I have never seen this warning before.

Try reinstalling latest stock GB ROM and see does it work normally with original software and kernel. If it's still showing same message on that temperature i supose that problem isn't then in custom ROM-s and kernels but in hardware...
Sent from my LG-P920

Yeah that's the only way that I can find out if it's kernel related or a hardware problem. I guess I'll do the stock rom thing and if the problem continues, I'll take my phone to LG.

I've found out that the problem is not because of CPU temp but because of my simcard. I've changed my simcard and there is no problem anymore.

sound much better

Hexgore's Stock plus rom vs. Cynogenmod 9 vs. Cynogenmod 10

I did a quadrant benchmark on all of the roms listed above. Here are the results: (all of them had the same applications installed)
Hexgore's stock plus rom
CyanogenMod 9
CyanogenMod 10
​

archacha said:
I did a quadrant benchmark on all of the roms listed above. Here are the results: (all of them had the same applications installed)
Hexgore's stock plus rom
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CynogenMod 9
CynogenMod 10
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I don't see any results check your links...How about CM 7 now?

9v9 said:
I don't see any results check your links...How about CM 7 now?
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I have no idea what happened with the results. they were visible when I made the post. I only had CM7 on my chacha for 4 hours, and I didn't made a benchmark... But I wouldn't recommend CM7 to anyone, because CM9 and 10 are a lot better.

I knew CM9 is the best!

any bugs?
furkandeger said:
I knew CM9 is the best!
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hey man, did u try the CM9 ?
what about battery ? does it drain fast ?
im curious about it

mohawahba said:
hey man, did u try the CM9 ?
what about battery ? does it drain fast ?
im curious about it
Click to expand...
Click to collapse
Everything is almost perfect in CM9 except for the front cam, camcorder and LQ/HQ Youtube/browser videos(Everything video related is broken, actually).

I prefer cm 10 by ajeevlal

Nice thanks. Which rom are you using?

The only thing i loved in CM10.1 is onscreen keyboard , i installed perfect keyboard pro , customised it fully ... is there any way we can do this in stock or other Roms ?

Thumbnails Folder way to big

All who have this phone know the issue to little space now lately it not tolerable with the thumbnail folder occupying 98 percent of internal storage.
PS:
Pls advise i know i can delete it that only helps short term.
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[/IMG]

tzvblsm said:
All who have this phone know the issue to little space now lately it not tolerable with the thumbnail folder occupying 98 percent of internal storage.
PS:
Pls advise i know i can delete it that only helps short term.
[/IMG]
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I havent seen that since last november/december before all the CM10 bugs were worked out... what rom are you running?

jparnell8839 said:
I havent seen that since last november/december before all the CM10 bugs were worked out... what rom are you running?
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Liquid Smooth all-star blaze Lightning zap kernel

tzvblsm said:
Liquid Smooth all-star blaze Lightning zap kernel
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Did you just flash this ROM or have you been running it for a while? I thought xWolf13 updated Liquid Smooth once CM10 went official and updated a couple times :-/
I know I had this exact same issue with CM10 up until maybe a few nightlies after the CM10 Stable. Same exact issue down to a "T", then after one update, it would just stop.
@xWolf13, perhaps your technical abilities could be of use???

jparnell8839 said:
Did you just flash this ROM or have you been running it for a while? I thought xWolf13 updated Liquid Smooth once CM10 went official and updated a couple times :-/
I know I had this exact same issue with CM10 up until maybe a few nightlies after the CM10 Stable. Same exact issue down to a "T", then after one update, it would just stop.
@xWolf13, perhaps your technical abilities could be of use???
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Resizing as we speak.. Sorry about it. Forgot..

Random reboots. Help please.

I can't get rid of these damn reboots. I even flashed back to stock and no luck.
Currently running stock ROM with Code Blue kernel. Just got a reboot after using Soundcloud. It happened around 9:11AM. Logcat attached.
Any help would be appreciated! thanks.

Are you in lollipop? If so I am having them also

cwhittl said:
Are you in lollipop? If so I am having them also
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Yep, stock Lollipop rom with code blue kernel.
I had to go back to Mahdi's KitKat rom. Every Lollipop rom would give me random reboots.

c47v3779 said:
Yep, stock Lollipop rom with code blue kernel.
I had to go back to Mahdi's KitKat rom. Every Lollipop rom would give me random reboots.
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I switched to this hidden gem last night and so far no reboots - http://forum.xda-developers.com/google-nexus-5/general/rom-android-5-0-aosp-gapps-t2932747.
But we'll see as the day goes on.

c47v3779 said:
I can't get rid of these damn reboots. I even flashed back to stock and no luck.
Currently running stock ROM with Code Blue kernel. Just got a reboot after using Soundcloud. It happened around 9:11AM. Logcat attached.
Any help would be appreciated! thanks.
Click to expand...
Click to collapse
when is it happening? the GF's phone i was just informed 10 minutes ago that it is rebooting randomly or shutting down randomly on her. shes on stock locked and lollipop.

No idea when they happen. They are random.
I'm getting reboots even on KiKat. WTF?!
Any idea what to do?

Looks like this is what is causing my reboots. Could anyone please help me interpret the log?
Could it be a hardware issue?
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