[KERNEL] 2.6.29.6-nAa-jb-03 [23/11/12] Custom JB kernel + CWM Recovery - Sony Ericsson XPERIA X10 Mini

Before unlocking your bootloader, read this thread
If you brick your device, you are the sole responsible.
Preface:
Read through this post. Don't rush into flashing. Be sure you understand the process before you start
This is a custom kernel developed for Android Jellybean
Do NOT try this kernel on other Android versions - you are totally unsupported
This kernel introduces custom mtd partitioning with larger /system partition to hold the extra JB calories. If you are moving from another custom kernel to this one, you MUST first format /system /data and /cache via the embedded CWM recovery
Features:
Forked from nAa-ics-04 (all ICS features are already in there)
Built with linaro-4.7.1 toolchain
CWM-Based Recovery 5.5.0.4
Custom mtd partitioning scheme suitable for JB
Modular recovery flashing support (more on that to come...)
Tracing support for JB
pmem: bring up2date with CAF 2.6.38
genlock/kgsl fixes
Triple buffering support for msm framebuffer
Much more RAM for improved multitasking experience (shakira: 186MB, robyn/mimmi: 187MB)
FAQ:
If you have any issues, please read the FAQ thread first: http://forum.xda-developers.com/showthread.php?p=30297163
Requirements:
Unlocked bootloader --> http://forum.xda-developers.com/showthread.php?t=1254225
MiniCM10 or any JB, source-based ROM (install this kernel first, format /system, /data and /cache, then install the JB ROM)
Flashtool tested to be working with your phone, e.g. from here: http://www.multiupload.com/GYL7A7XQBT Original flashtool thread: http://forum.xda-developers.com/showthread.php?t=920746
Install:
Backup
Unlock your bootloader as described here: http://forum.xda-developers.com/showpost.php?p=17384177&postcount=3 or here: http://forum.xda-developers.com/showthread.php?t=1254225
Download the kernel ftf file from here and move it to Flashtool\firmwares so that Flashtool can pick it up
Flash the kernel via Flashtool
Reboot and you should see the kernel boot animation
[*] (First time only) Get into recovery and format /system /cache and /data manually
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Uninstall:
Flash back to stock using SEUS.
OR
[*] Format /system /data and /cache via CWM and THEN flash another kernel via Flashtool
Sources:
The linux kernel is GPL'ed, everyone who does modifications should make them publicly available.
https://github.com/nobodyAtall/nAa-kernel-jb
Donate:
If you are enjoying my work please consider donating:
.
Donations are voluntary but allow me to spend more time on this project.​
Disclaimer:
I can't be held responsible if this Kernel bricks your device or makes it explode in your hands! Use it at your own risk!
​

---

Changelog:
### nAa-jb-02
* Ramdisk changes
* Increase vm_max_readahead to 1024Kb
### nAa-jb-01
* Forked from nAa-ics-04
* Tracing support for JB
* pmem: bring up2date with CAF 2.6.38
* genlock/kgsl fixes
* Triple buffering support for msm framebuffer
* Much more RAM
* Custom mtd partitioning for JB

---

MTD partitioning for Jellybean:
localhost / # cat /proc/mtd
dev: size erasesize name
mtd0: 10500000 00020000 "system"
mtd1: 00500000 00020000 "cache"
mtd2: 0bfc0000 00020000 "userdata"
mtd3: 00a00000 00020000 "recovery"
localhost / # df -h
...
/dev/block/mtdblock0 261.0M 238.1M 22.9M 91% /system
/dev/block/mtdblock2 191.8M 86.5M 105.3M 45% /data
/dev/block/mtdblock1 5.0M 780.0K 4.2M 15% /cache
...

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YYYEEEAAAHAHHHH !!!!
SANKYUUU !!
Going to test ASAP

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nobodyAtall said:
MTD partitioning for Jellybean:
localhost / # cat /proc/mtd
dev: size erasesize name
mtd0: 10500000 00020000 "system"
mtd1: 00500000 00020000 "cache"
mtd2: 0bfc0000 00020000 "userdata"
mtd3: 00a00000 00020000 "recovery"
localhost / # df -h
...
/dev/block/mtdblock0 261.0M 238.1M 22.9M 91% /system
/dev/block/mtdblock2 191.8M 86.5M 105.3M 45% /data
/dev/block/mtdblock1 5.0M 780.0K 4.2M 15% /cache
...
Click to expand...
Click to collapse
How to use mtd partiton???
Sent from my U20i using xda premium

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I tried to move on, to use another phone, but nAa keeps surprising us with impossible ROMs so i´ll stay with my mimmi as long as nAa continue to make it´s magic. Congrats, you´re the best dev.

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Does this kernel suports linux swap partition ?

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useful links :
[DEV] miniCM10 debug only thread (shakira, robyn and mimmi)
$find other useful link in miniCM7/9 miniFAQs $
Perfomance :
recomended settings :
perf related :
CPU: keep default, but enable UnderVolting (and set on boot if you don't OverClock) (settings>performance>CPU)
RAM : to optimize RAM usage, use KSM, zram (18%, default) and allow purging of assets (settings>performance>memory managment)
I/O : keep NOOP, this is the default and the best for flash memory
other :
in settings>developer options
enable USB debugging,
debug notification,
set all animations to 0.5 (electron beam CRT animation will happen no more)
enable "kill with back button"
________________
for whose who feel the system slow and laggy, just try the SWAP (SDcard class6+ recommended)
SWAP, there is two "kind" of swap : using a partition on the SDcard, or using a swap file
both are good, but some SDcard/phones react better with the one or the other​
let us start with the partition way : it is more complicated than the file method, but as some advantages
pros: once it is set up, no need to care about it anymore, the SDcard can be mounted to PC easily without latency
cons: a little complicated to set up, and once it's done, it is as complicated to revert as to set up; to change swap size, you need to repeat the process (formating and partitioning SDcard)
needs a clean install of miniCM10:
flash JB kernel
in CWM, go to mount&storage :
then, format /system, /data and /cache (so that kernel can use the new partitions size) any data on phone memory will be lost
set up your swap:
==> go to /advanced/Partition SD Card
if you don't want to use a2sd, then choose the minimal size for ext, and the size you want for SWAP
it will FORMAT your SDcard ! any data on SDcard will be LOST
and install the rom
swap partition should work
what doesn't work is the swap info menu
to revert : format SDcard in phone settings : it will FORMAT your SDcard ! any data on SDcard will be LOST​
____________________
now, the swap file way : it is really simpler than the swap partition, works great but has some drawbacks
pros: easy to set up, easy to revert, and the size can be choosen at wish at anytime (in settings>performance>memory>Swap settings)
cons: high latency when mounting SDcard to pc, it can take forever (really quicker to use CWM mount and storage capability to use the SD on the PC, than using android way)
you must perform a clean install of miniCM10 (by formating /system, /data and /cache) any data on phone memory will be lost
install the rom zip, the gapps, and boot up your phone
set it up
once your rom is ready to use,
go to settings>performance>memory>Swap settings
choose "enabled"
choose the size
allow system to get SU permissions
wait for the pop up "swap enabled"
enjoy, it is simple and can be disabled on wish​
to see if you swap works, open terminal, and type the following :
Code:
free

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I can`t in to recovery, I try reflash the kernel but nothing happened, and yes I press back bottom, any help, with nAa-13 work the recovery...

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The "Reboot into recovery" option isn't working (from within recovery or jellybean), always have to do it manually w/ multiple back button presses.

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herbesi01 said:
I can`t in to recovery, I try reflash the kernel but nothing happened, and yes I press back bottom, any help, with nAa-13 work the recovery...
Click to expand...
Click to collapse
The same issue. After formating on nAn-13 kernel /system, /data and /cache and flash the kernel i cant get into CWM on nAn-jb-01 kernel. Any ideas what seems to be a problem?

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Mitchio said:
The "Reboot into recovery" option isn't working (from within recovery or jellybean), always have to do it manually w/ multiple back button presses.
Click to expand...
Click to collapse
Works here. You have to press home after a little bit and it will reboot fine rather than being stuck on rebooting
X10man
Sent from my U20i using xda premium

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x10man said:
Works here. You have to press home after a little bit and it will reboot fine rather than being stuck on rebooting
X10man
Sent from my U20i using xda premium
Click to expand...
Click to collapse
It reboots fine, when I select reboot into recovery (either from within cwm or within the os) it just boots as normal and goes into the os; as opposed to booting straight into recovery.

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Very good kernel!
Now my cpu can run also at 787mhz without problem! (with naa-ics-04 mi limit was 748mhz).
Inviato dal mio U20i con Tapatalk 2

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noob question here, how do you format /system /data and /cache manually in CMW ??
---edit
found it in mount & storage n.n

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SleepingTurtle_I said:
noob question here, how do you format /system /data and /cache manually in CMW ??
---edit
found it in mount & storage n.n
Click to expand...
Click to collapse
In CWM recovery go to mounts or something that like name and go into that menu and you will see these options.
Sent from my U20i using xda premium

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This doesn't work for me
I can't get back to recovery

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@all the complains about stuck restart.
IF YOU ARE STUCK:
Install U20_nAa-ics-04_2.6.29.6-nAa-ics-04.zip flashing the same way.
wipe /cache /data /system via CWM then follow the instructions from nobodyAtall
IF YOU ARE NOT STUCK:
wipe /cache /data /system via CWM then follow the instructions from nobodyAtall

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@naa
Could you implement the 200mb ram fix on the cm7 or cm9 kernels or would there be side effects?
Sent from my U20i using xda app-developers app

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ales47 said:
@naa
Could you implement the 200mb ram fix on the cm7 or cm9 kernels or would there be side effects?
Sent from my U20i using xda app-developers app
Click to expand...
Click to collapse
No, this is only for JB. Other android versions will probably have issues.
Sent from my Galaxy Nexus using Tapatalk 2