Develop Bugs

[Q] Difference between kernels

Hi,
Can someone explain why it's not possible to use a AOSP/AOKP kernel with SonyEricsson based ROM's and vice versa? I know it's not possible but I'm interested in the technical reason.
Thanks,
Svanteson

Google about how a kernel works and what it is, then you will understand better.
A kernel is like a "connection bride" in your system.
All rom systems are not the same, therefore a kernel for aosp wont work on sony rom because it will "connect" wrong
Typed down from the sky with sexy LT15i

TheHaso said:
Google about how a kernel works and what it is, then you will understand better.
A kernel is like a "connection bride" in your system.
All rom systems are not the same, therefore a kernel for aosp wont work on sony rom because it will "connect" wrong
Typed down from the sky with sexy LT15i
Click to expand...
Click to collapse
I know how a kernel works and what it is. I know all ROM's are not the same. I know a kernel for aosp won't work on sony ROM.
What I asked for was the technical reason for it not to work. "It will connect wrong" is not a very good technical explanation...
Maybe it's due to the kernel modules? I guess they are located in the /system partition and compiled for a specific kernel version?
BR/Svanteson

What would be weird: kernels working for several completely different phones. Why would a kernel like franco kernel, made for the Galaxy Nexus, work with Xperia Arc? Obviously the kernel has configurations and optimizations for a certain set of hardware, and if you completely switch the hardware it doesn't make sense to expect functionality.

bajsmumsaren said:
What would be weird: kernels working for several completely different phones. Why would a kernel like franco kernel, made for the Galaxy Nexus, work with Xperia Arc? Obviously the kernel has configurations and optimizations for a certain set of hardware, and if you completely switch the hardware it doesn't make sense to expect functionality.
Click to expand...
Click to collapse
I'm not talking about different hardware. I'm taking about an AOSP/AOKP-kernel built for Arc/s that don't work with a Sony Ericsson based ROM for Arc/s and vice versa.

svanteson said:
I'm not talking about different hardware. I'm taking about an AOSP/AOKP-kernel built for Arc/s that don't work with a Sony Ericsson based ROM for Arc/s and vice versa.
Click to expand...
Click to collapse
Is there even such a thing as an AOKP kernel? Arccording to their own website, AOKP is "a custom ROM distribution for many Android devices". If you're asking why some ROMs don't work with some kernels, then the answer is simply that one or the other has dependencies/ways of doing things that are not supported by the other.

Well, I'm not interested in the simple answer because that I already know.
I have used a debian kernel with Suse on a x86 PC. Stupid thing to do, I know. It was a customer who wanted to try that in a specific setup.
But it booted up. Why is not a Sony Ericsson based ROM booting on an AOSP kernel?
Is it due to different kernel module versions, boot params and/or other things?
Perhaps I should post this in the devel forum instead?

[Q] Kernel 3.0 Questions

Hi! I am an Xperia Arc S user that have the same SoC than the DHD. We only have an 2.6 kernel because we have the famous msm7X30 chipset. We're about a year and a half waiting. So, I'd like to ask about that.
1- If HTC did'nt release anything, would you have a 3.0 kernel?
2- How long do you have a 3.0 kernel?
3- Are the 3.0 kernel stable for daily use?

sinholueiro said:
Hi! I am an Xperia Arc S user that have the same SoC than the DHD. We only have an 2.6 kernel because we have the famous msm7X30 chipset. We're about a year and a half waiting. So, I'd like to ask about that.
1- If HTC did'nt release anything, would you have a 3.0 kernel?
2- How long do you have a 3.0 kernel?
3- Are the 3.0 kernel stable for daily use?
Click to expand...
Click to collapse
This area of xda has a lot of devs both Rom and kernel savvy. They took the 3.0 kernel and recompiled it to work with ace devices both for aosp and sense. However, since it doesn't come from an HTC source there are issues that may never be ironed out. In my opinion it depends on what you use your phone for to determine if it is a daily driver for you. For me I don't have issues as headset buttons not working is not an issue for me. There are other bugs too, but for me it's usable as a daily driver. I don't know how long we have had the 3.0 kernel but it has been a while.
Sent from my Inspire 4G using xda premium

sinholueiro said:
Hi! I am an Xperia Arc S user that have the same SoC than the DHD. We only have an 2.6 kernel because we have the famous msm7X30 chipset. We're about a year and a half waiting. So, I'd like to ask about that.
1- If HTC did'nt release anything, would you have a 3.0 kernel?
2- How long do you have a 3.0 kernel?
3- Are the 3.0 kernel stable for daily use?
Click to expand...
Click to collapse
Acualy, developers don't wait others, they r working hard on porting. I was switching between all ICS & JB ROM with their kernel, I found the most stable with vitreous kernel & almost have not problem on daily use.
Sent from my GT-I9100 using Tapatalk 2

[Q] Overclock kernel

Hey folks,
I've been looking to overclock my Xperia Arc (runnin ICS 4.0.4, build: 4.1.B.0.587) and I'm quite the noob at this so I'm looking for answers and advice. From what I gather, I need to install a kernel and I hear there are many options. One of the most popular one seem to be DooMKernel. I'm thinking about using that and I found this thread:
http://forum.xda-developers.com/showthread.php?t=1520654
Now, my question is, is that the most updated thread? Is there a newer updated DooMKernel lying around (that is newer than v5)? It's fairly difficult to navigate the forums and so I have a hard time finding all the right posts.
My next question is, if I were to install CyanogenMod, does it install a new kernel that allows me to overclock or is OS separate from the kernel?
And also, feel free to recommend me any other kernels. Are they all pretty much the same or do some of them have particular enhancements?
Thanks in advance!

barom138 said:
Hey folks,
I've been looking to overclock my Xperia Arc (runnin ICS 4.0.4, build: 4.1.B.0.587) and I'm quite the noob at this so I'm looking for answers and advice. From what I gather, I need to install a kernel and I hear there are many options. One of the most popular one seem to be DooMKernel. I'm thinking about using that and I found this thread:
http://forum.xda-developers.com/showthread.php?t=1520654
Now, my question is, is that the most updated thread? Is there a newer updated DooMKernel lying around (that is newer than v5)? It's fairly difficult to navigate the forums and so I have a hard time finding all the right posts.
My next question is, if I were to install CyanogenMod, does it install a new kernel that allows me to overclock or is OS separate from the kernel?
And also, feel free to recommend me any other kernels. Are they all pretty much the same or do some of them have particular enhancements?
Thanks in advance!
Click to expand...
Click to collapse
1. The Doomkernel you linked have problem with some battery drainage, thanks to not using newest kernel sources (if I remember correctly?) and also that Doomlord haven't updated it at a long time so. Look for some other kernels before that one becomes stable enough!
2. The Cyanogenmod ROM requires it own specially developed kernel which can be found in the zip package of each initial release (CM7 - CM9 - CM10) and it have to be flashed through Fastboot before you are flashing the ROM in recovery. Follow instructions on Cyanogenmod homepage for each installation on your prefered device for more info!
3. If you're on Gingerbread, use Doomlord v22, for some amazing performance / battery and a lot of functions (underclocking, undervolting and some other stuff).
If you're on ICS, use latest Lupus kernel (version 8) - that kernel is a beast in every way and you'll definitely like it, it's stable enough to satisfy even you!
It's some difference between the kernels in speed, stability and performance / smoothness / battery life / functions, yes. You have to check them out yourself to find your own favourite.
Hope my answers helped you!
Sent from my LT18i using xda app-developers app

Fusion, arc knight ,doomkernel
Fusion kernel can be used with cm or aokp
arc knight and doomkernel for stock roms

jass619 said:
Fusion kernel can be used with cm or aokp
arc knight and doomkernel for stock roms
Click to expand...
Click to collapse
Arcknight isn't smooth at all, and Doomlord kernel ICS got battery problem thanks to using Beta sources...
Sent from my LT18i using xda app-developers app

Destroyedbeauty said:
1. The Doomkernel you linked have problem with some battery drainage, thanks to not using newest kernel sources (if I remember correctly?) and also that Doomlord haven't updated it at a long time so. Look for some other kernels before that one becomes stable enough!
2. The Cyanogenmod ROM requires it own specially developed kernel which can be found in the zip package of each initial release (CM7 - CM9 - CM10) and it have to be flashed through Fastboot before you are flashing the ROM in recovery. Follow instructions on Cyanogenmod homepage for each installation on your prefered device for more info!
3. If you're on Gingerbread, use Doomlord v22, for some amazing performance / battery and a lot of functions (underclocking, undervolting and some other stuff).
If you're on ICS, use latest Lupus kernel (version 8) - that kernel is a beast in every way and you'll definitely like it, it's stable enough to satisfy even you!
It's some difference between the kernels in speed, stability and performance / smoothness / battery life / functions, yes. You have to check them out yourself to find your own favourite.
Hope my answers helped you!
Sent from my LT18i using xda app-developers app
Click to expand...
Click to collapse
Awesome response, very helpful. Just one more question, do the CyanogenMod kernels have overclocking capabilities? Thanks for the reply, much appreciated!

barom138 said:
Awesome response, very helpful. Just one more question, do the CyanogenMod kernels have overclocking capabilities? Thanks for the reply, much appreciated!
Click to expand...
Click to collapse
Yup, CM kernels was created with overclocking and extended performance in mind, hence why Cyanogenmod ROMs are known with expanding the possibilities to some crazy ass performance and level boost (I have only tried CM7 and using it was like driving an Ferrari at 220 km/hour, later versions should be equal in their own specific ways).
Hope you got some useful answer on your question, dude!
Sent from my LT18i using xda app-developers app

I can recommend Sega Rush v3 kernel to use with your currrent or any .587 based custom rom, it can if you so wished be used up to 2ghz,( as could Doomlords V5 ), but be warned and advised to tread carefull with overclocking as you can cause permanent heat damage to, and even kill your phone if you overcook it.
I think the links to Doomlords v5 are down at the moment he is not active with it, so you may struggle to find doomkernel v5 to download, however if you look to the credits in the latest release of Sega v3, you will see him mentioned, take that as a good omen.
PS there are plenty of kernels to choose from, but I would say try to use one that is currently under active development, so that any upgrades / improvements are kept constant.
I can't comment on Cyanogenmods never tried any, but they seem popular enough, and look pretty well supported.You really are spoilt for choice, have fun

[KERNEL][ZL][EXPERIMENTAL] UNOFFICIAL DooMKernel {JB}(v13r2)[20130903]

Since DooMLoRD has stopped the development of his great DooMKernel for the Xperia ZL, and after his permission, I'm proud to announce
UNOFFICIAL EXPERIMENTAL DooMKernel for the Xperia ZL​
This is fully based on his original kernel sources at https://github.com/DooMLoRD/android_kernel_sony_apq8064
So, THANKS @DooMLoRD for his awesome job and for letting me build this unofficial release. Please, DO NOT REPORT BUGS IN THIS RELEASE TO DooMLoRD, since this is an UNOFFICIAL and UNSUPPORTED release.
This is an EXPERIMENTAL BUILD which has the following changes over the original one I posted on the other thread:
Built with Linaro GCC 4.7, custom compiled with optimizations for arm-cortex_a15
Compiled with speed optimizations (gcc -O2)
Removed profiling settings (slightly lighter footprint)
Removed debugging settings (slightly lighter footprint)
And other kernel options tweaks
It feels a little snappier to me, although there are no big changes in benchmark tools like AnTuTu (as you should know, benchmarks are not good for measuring the "real-world" user experience). I've been testing these builds for several days now, and haven't found any issues. But YMMV, report any issues you find with this experimental build that are absent in the original build (so I know it's related to this build).
You can follow the original thread for current DooMKernel at the Xperia Z forum here: http://forum.xda-developers.com/showthread.php?t=2172888. There you will find all the features of the current release, and discuss specific issues specific to this kernel.
The releases are for STOCK JELLYBEAN 4.2.2 firmwares. Currently tested only on 10.3.1.A.0.244.
>>>>>>>> Download EXP v13r2 for Xperia ZL: ZL-UNOFFICIAL-EXP-DooMKernel-v13r2.zip - 7.33 MB (build date Sep-03-2013)

General instructions and recommendations
As with previous releases, to install this kernel simply flash the zipfile in recovery.
MY RELEASE DOES NOT INCLUDE RECOVERY. You can use XZDualRecovery http://forum.xda-developers.com/showthread.php?t=2261606 from @[NUT].
I recommend you first BACKUP THE FOLLOWING DIRECTORIES:
Code:
/system/etc/firmware/wlan/prima
/system/lib/modules
Because the kernel includes new WLAN firmware and modules, and in case you want to go back to stock kernel, you can just flash the old kernel and restore your backups.

Been working great for me since release.
Sent from my C6506 using Tapatalk 4

2 threads for one kernel? I'm sure if you combinate the experimental and release thread it's much better for orientation. People don't have to grab in 2 threads to find things they want.
Anyway thanks for your work to keep our zl up to date!
Ported from my Xperia ZL with wireless data (it's magic)

SafiXS said:
2 threads for one kernel? I'm sure if you combinate the experimental and release thread it's much better for orientation. People don't have to grab in 2 threads to find things they want.
Anyway thanks for your work to keep our zl up to date!
Click to expand...
Click to collapse
Well indeed this is something I considered when posting this experimental build. It has its pros and cons. I went with the option of creating a new thread to avoid cluttering the original one and possibly confusing users with so much information in one place (most users don't fully read a long OP). Since this is a different build which should take much less attention than the original one, I think it's better as a separate thread.
BTW, I'll try to release v15 for you guys today.

dbolivar said:
Well indeed this is something I considered when posting this experimental build. It has its pros and cons. I went with the option of creating a new thread to avoid cluttering the original one and possibly confusing users with so much information in one place (most users don't fully read a long OP). Since this is a different build which should take much less attention than the original one, I think it's better as a separate thread.
BTW, I'll try to release v15 for you guys today.
Click to expand...
Click to collapse
Ok, i agree. It have pros and cons. Anyway I'm waiting for New release
Ported from my Xperia ZL with wireless data (it's magic)

Included CWM Recovery?
Is this kernel includes CWM recovery? I have managed to flash this kernel. But it seems there is no CWM in it. Thank you and sorry for my bad english.

denbagus said:
Is this kernel includes CWM recovery? I have managed to flash this kernel. But it seems there is no CWM in it. Thank you and sorry for my bad english.
Click to expand...
Click to collapse
NO!

denbagus said:
Is this kernel includes CWM recovery? I have managed to flash this kernel. But it seems there is no CWM in it. Thank you and sorry for my bad english.
Click to expand...
Click to collapse
If you read op carefully you will know you have to flash NUT's dualrecovery.
Always the same, people don't want to read a op and ask questions they are already answered in op. Don't find words....
Regards SafiXS
Ported from my Xperia ZL with wireless data (it's magic)

is there any updates?

Can I try this kernel in a ZL C6502 with locked bootloader?

maferrario said:
Can I try this kernel in a ZL C6502 with locked bootloader?
Click to expand...
Click to collapse
No, no and no. Custom kernels only for unlocked bootloader! You can read this in any kernel thread dude.
Ported from my Xperia ZL with wireless data (it's magic)

SafiXS said:
No, no and no. Custom kernels only for unlocked bootloader! You can read this in any kernel thread dude.
Ported from my Xperia ZL with wireless data (it's magic)
Click to expand...
Click to collapse
Problem is you have to actually be able to read, haha
Sent from my C6506 using Tapatalk 4

Got an issue where my 64gb memory card doesn't show up. It just says sd card safe to remove

Greenarcher707 said:
Got an issue where my 64gb memory card doesn't show up. It just says sd card safe to remove
Click to expand...
Click to collapse
What Rom you're using?
Ported from my Xperia ZL with wireless data (it's magic)

Stock .67

Greenarcher707 said:
Stock .67
Click to expand...
Click to collapse
Try to flash the 244 ftf. It looks like an compatible problem
Ported from my Xperia ZL with wireless data (it's magic)

The whole rom or just the kernel from the ftf?

Greenarcher707 said:
The whole rom or just the kernel from the ftf?
Click to expand...
Click to collapse
Try first to flash http://forum.xda-developers.com/showthread.php?t=2405925 this kernel. If sd card won't work, the problem is on sd card side. Format it in exfat. And be sure you are using stock Rom and no other Rom.
Regards
Ported from my Xperia ZL with wireless data (it's magic)

Kernel for Z1C

Good day, i don't see much for Z1C but there are a lot for Z1. Will the kernel for Z1 work with Z1c? i tried checking Doom but it doesn't provide info if it will work. Do you know other kernels? also it seems there is little development for Z1c because there are very few ROMS here.

Hm. There's at least a DoomKernel port for stock based ROMs and Pimped Kernel for CM based. And there's a lot (not as much as for other devices, but enough to have a choice) of ROMs. Did you check the correct forums?
http://forum.xda-developers.com/sony-xperia-z1-compact/development
http://forum.xda-developers.com/sony-xperia-z1-compact/orig-development