yashsingh1/xdaforums huggingface dataset:
[Xperia Tablet Z Original Android Development] DooMLoRD:
so just to confirm,

you have tested the kexec booting to boot a custom kernel over stock kernel of xperia tablet z?

also the most recent patch is over a year old, so you mean to say that no other modifications were required to get this working on the apq8064 kernel of sony?

just saw the sources... from what i understand this will only work with a base kernel which has these patches, meaning it will be of no use on locked bootloader devices... if we are able to create this for locked bootloader i believe this will be much more useful...
[Xperia Tablet Z Original Android Development] rayman:
I have tested booting a ram-loaded kernel from a custom kernel using the source I provide.

No. There were modifications - I just failed at cherrypicking the changes from my private tree. (wrong order)

That was never part of this task. "Regular" Kexec is a lot harder to get working because you have to actually deinitialize a lot of hardware and reinitialize it without trouble. Not even always possible without a power cycle.

Personally, I'm not interested in solutions for locked bootloaders. The purpose of this is multi boot. In particular being able to boot something like e.g. ubuntu touch or Mer/Nemomobile by just selecting a menu item and the same for android.

At the moment is also requires modifications to the target kernel, but this is one of the issues I plan to address.
[Xperia Tablet Z Original Android Development] Sacob:
do you think it will be possible, one day, to dual boot android and ubuntu touch with this tablet?
[Xperia Tablet Z Original Android Development] skiwong20:
yes when his multiboot solution is put together. they did this on the nexus 7
[Xperia Tablet Z Original Android Development] Sacob:
i could only find dual boot with android and ubuntu, not ubuntu touch.. does the rom have to be modded to work with multiROM?

i'm asking all this questions because i'm considering to buy this tablet. does the roms differ from 16gb/32gb version?
[Xperia Tablet Z Original Android Development] skiwong20:
well i am pretty sure ubuntu touch can b dual booted with android. ubuntu touch is built off CM base for most of the devices that have a ubuntu touch port. to multiboot any rom the kernel need a patch that rayman will have on github.

16 nd 32 g dont matter for build, but there are wifi only model: Sgp311= 16g Sgp312=32g . which the nickname for those is pollux_windy. and they have a 3g model=SGP321= nickenamed pollux. u have to make sure when u choose a aosp rom u r getting the right nickname build for the device u buy
[Xperia Tablet Z Original Android Development] rayman:
The ROM has to be modded to allow multi boot - primarily, the issue is that android mounts system, cache, data etc from a static configuration.

This means a multi-booted rom needs to somehow know where to mount these partitions from. It's a minor change and I'll certainly look into if I can find a good way to do this.

Ubuntu touch on the other hand will probably work unmodified, especially with the recent developments towards running the minimal android environment inside an lxc container.

I'm also hoping to eliminate the need to patch the target kernel (the on-flash kernel needs my patches!), but no guarantees there.
[Xperia Tablet Z Original Android Development] rayman:
Main post updated! Solution is nearly ready, see url in second post for screenshots of my work.

Images and sources will be out within a few weeks.
[Xperia Tablet Z Original Android Development] shangrila500:
Any new news on the multi boot?

Also I have a few questions, I'm apologize in advance if they've been answered before and I just skimmed over them.

Seeing as how we are unlocked, or have the ability to be, how will this differ from the kexec that was available for the Motorola phones and for the VZW GS3 before the insecure bootloader was leaked?

Will this replace TWRP or CWM as the recovery when installed/flashed?

If not how will we access it? Will it be an app or an add on to the recovery?

Will it allow for bootong off of the external SD card or only the internal?

Will it be similar to other dual boot/multi boot kernels/solutions where both ROMs will be installed at the same time so we can easily switch between them without having to restore nandroids or will it just be an automated nandroid switcher?

Sorry for the questions, this is just one of the projects I'm extremely excited about and I can't get enough news and information on it!!!!
[Xperia Tablet Z Original Android Development] rayman:
Thanks for some good questions :) It is pretty clear that I haven't been proactive enough in describing exactly what this provides (when the last few issues are fixed and I release it).. I'll answer in-line.

This method is not really related, other than the 'kexec' name. It requires an unlocked bootloader.

It allows runtime replacing the kernel in RAM.

In essence, it replaces recovery AND the primary boot image for android. Once installed, when the tablet boots it will show the menu shown in my screenshots, (with an optional automatic timeout for booting primary). This menu can contain primary android, various recovery solutions, Ubuntu Touch and pretty much anything else.

Yes. It will allow booting off internal SD, external SD as well as USB harddisk/flashsticks connected via USB OTG cable.

Android images will generally need to be modified to support booting from external disk because of how android deals with partitions. This would also be the case with e.g. LittleKernel or any other bootloader. It's a limitation in android.

In essence, it loads a kernel off of flash/sd/usb and boots it from RAM. This means that you can easily switch between them without nandroid or anything. Choosing a different image doesn't modify the flash in any way (nandroid does!) - it just boots it for a single session.

This method will also easily allow for booting the same ROM with multiple different kernels depending on your mood.

As I said, questions are great :) I'm a developer, so I make far too many assumptions as to what is obvious to people and what isn't :) Do let me know if any of my answers are unclear!
[Xperia Tablet Z Original Android Development] gabx:
I have used for a long dual boot on SGS2 with Siyah Kernel ( http://xdaforums.com/showthread.php?t=1263838).

Are you trying to implement same init script for kernel ?
[Xperia Tablet Z Original Android Development] rayman:
I'm not familiar with how that particular dualboot solution works, but this isn't some random init script hack. It's proper, actual multiboot.

However, this allows booting any number of entirely seperate boot.img, kernel & ramdisk (initscripts etc), including loading them off SD or USB.

As opposed to the nanddroid "dualboot" solutions, this doesn't modify the flash every time and hence doesn't have the same wear and tear on the flash.
[Xperia Tablet Z Original Android Development] shangrila500:
Those answers are EXCELLENT!!!!! You should copy that and paste it in the OP, questions and all, that way people will have a better understanding of it as well.

I have two more questions, seeing as how we will be booting a live image, similar to booting Ubuntu or similar from a USB or CD, will we be able to save the changes we have made to the ROM? Will there be a reboot menu (similar to the ones on CM, PA, etc) that says "shutdown and save changes" or will you just be able to shutdown and it automatically saves?

Will there be a way to make a nandroid so if we wanted to do away with the multi-boot but keep one of the ROMs we could easily by restoring a nandroid?

Thank you so much for all your hard work! I can't wait to see this in action and be able to use it!!!!! This will solve so many issues that present in other devices and their "dual/multi-boot solution." The only ones I have ever ran have been kernels that just boot nandroids in an easier manner than the normal CWM/TWRP nandroid restore. I am looking so forward to this it is unbelievable, this and a full functional AOSP ROM with PA features are the things that have me the most excited and this wins by a LARGE leap!!!!

---------- Post added at 08:25 PM ---------- Previous post was at 08:11 PM ----------

I didn't see anything about that kernel supporting dual boot but if its anything like Devil kernel for the VZW Note 2 then it will be nothing like this multi-boot solution. Read the questions he answered for me and you should get a good idea of the differences. Pretty much its exactly like grub but it is a very nice GUI package.
[Xperia Tablet Z Original Android Development] pangiotis24:
siyah kernel achieves multiboot by a modified cwm recovery

on boot there is a prompt to press a button(on sgs2 the home button) and you boot second rom or you just wait and you boot primary rom.however there is only one kernel so both roms should be able to boot from this kernel(on s2 that's not a problem because that kernel and mos other kernels support both aosp and stock roms) however i believe that grub-like solution is much better
[Xperia Tablet Z Original Android Development] shangrila500:
Thats very very similar to Devil, I cannot wait for this solution! Im hoping the dev hasnt lost interest!!!!
[Xperia Tablet Z Original Android Development] rayman:
I haven't :)

I've just been extremely busy lately - I'll fix up the last issues and make a WIP release as soon as I can can - real life and some other projects getting in the way atm :(
[Xperia Tablet Z Original Android Development] shangrila500:
That's completely understandable! I just hadn't seen you and got a little worried.

When you have a little time I posted a couple more questions above in response to your answering my first slew of questions, would you mind answering them. No rush at all, just when you have time.

If there's anything I can do to help you just let me know!
[Xperia Tablet Z Original Android Development] phillipssat:
Any chance to see a working multiboot in the next time ??

On xda are so many very nice proof of concept Images for Tablet-Z but up to now nothing for release....

Original 4.2.2 seems to be the best at this time > With GPS and HDMI ... ;)

Therefore it would be great to have a stable multiboot to use Original but test and play with PacMan and Ubuntu.... without flashing 3times a day..
[Xperia Tablet Z Original Android Development] Aborto:
Hi, any progress with this, is it still under development?
[Xperia Tablet Z Original Android Development] rayman:
Yes. It has been in hiatus for a bit due to other projects, but they are mostly done with now (See androidroot.mobi).

I'm planning to get back to this asap and get a first release out of the door.
[Xperia Tablet Z Original Android Development] shangrila500:
I have been looking forward to this for quite a while. This is the main thing I am waiting on to unlock and start flashing! I can't wait until it is done!
[Xperia Tablet Z Original Android Development] Guantanamo:
Hi,

I'm looking if multiboot is ok. I'm planing to get tablet z soon, and need to know if I can do real multiboot (must likely with a ROM based on cm10.2-aokp and ubuntu touch or a linux distrib).

Thanks in advance for reply.
[Xperia Tablet Z Original Android Development] phillipssat:
Could we hope for it the next 14days ???
[Xperia Tablet Z Original Android Development] scoobydu:
Would be great to get some output from this project, as I was really looking forward to the multiboot prospects .. any chance?
[Xperia Tablet Z Original Android Development] Guantanamo:
It'll never come out, projects like this where we don't have regular news are always gone before born. I was expecting that, even if i was hoping (and hope it again) that it'll be reality, but the promess is just a fiction. I'm sorry to say that, but it's most likely just a joke. Many people asked for news and no one reply. There is some other serious projects arround, maybe we can find some help on them. Forget this thread, a moderator should close it.
[Xperia Tablet Z Original Android Development] cantenna:
Any updates on this?
[Xperia Tablet Z Original Android Development] zeus2602:
Updates?

Any updates now?
[Xperia Tablet Z Original Android Development] pangiotis24:
no hope

unfortunately the only tablet z competition winners who finished their project was pac-rom,ubuntu touch and ir support on aosp.Everything else was soon abandoned or never started as the creator couldn't/didn't have any intention to start it.Some of them had just a good idea but after some time they realised the lacked technical knowledge to accomplish the project and some other just had a brilliant idea without having any intention of doing the project.They just wanted to win a tablet z.When they got the tablet on their hands they disappeared...
[Xperia Tablet Z Original Android Development] Lupin The Third:
That's so sad.
[Xperia Tablet Z Original Android Development] Rootk1t:
http://xdaforums.com/xperia-tablet-z/orig-development/mod-multirom-v28-t2858745
[Xperia Tablet Z Original Android Development] mamenyaka:
Excuse me, do you have anything against the Ubuntu Touch project?
[Xperia Tablet Z Original Android Development] pangiotis24:
Nope

Sorry.Excuse me for that.I forgot the ubuntu touch project participated on the tablet z competition.I corrected the initial post
[Galaxy S 4 General] dragon135:
I found smearing also happens not only in pure black background.

For example in this thread:

http://xdaforums.com/showthread.php?t=2327389

The first post of the thread smears if I read with xda app using "xda free" display style (dark theme) setting. The first post has dark blue text in dark grey background.

I tried to capture a video but the phenomena cannot be seen in video.

Sent from my GT-I9500
[Galaxy S 4 General] rdy2go:
Still, there are people here who keep on repeating smearing is fixed.

It's not and won't be due to its hardware nature. /working theory /

"Congratulations" to all the reviewers who missed such an easily to notice problem. I noticed it 5 minutes after launching this phone for the first time...

Couldn't believe my own eyes, almost cried after spending so much money on this device.
[Galaxy S 4 General] rosebud:
Might sound silly, I have tried to replicate this issue on my s4, I honestly cannot see the problem. Am I the only one? Normally I am the first to notice things like this, making me think that the issue is either sporadic or that samsung changed something in more recent units, (mine is about 3 weeks old)

Steve
[Galaxy S 4 General] dikime:
Make a paint document and fill it with pure black. Then delete a white space in the middle. Open it from the phone and move the white dot around. If you get no smearing then - you have a normal phone and we have deffective units, which is not nice, but can be repared; or your brightness is very high. Lower brightness exaggerates the problem.

However, since MEA Samsung changed Settings' background to grey from black, which for me is a sign that they know about it and that's a hardware limitation. Pixels "lag", because it's the first time since Galaxy S that black actually is "turned off".
[Galaxy S 4 General] James.Miller:
It's worse with grey on black than it is with white on black and also it gets worse the lower you have the screen brightness. grey on black at minimum brightness is an absolute mess on my phone. But i should stress you dont really see the problem in normal usage at all.
[Galaxy S 4 General] rosebud:
Hi, on firmware mdm so not the newest. I'll do further testing tomorrow :)
[Galaxy S 4 General] Tvercetti28:
The darker the screen is, the more noticeable the smearing becomes.Touchwiz menus were black and now are grey, thats how samsung thought of to fix this but in certain apps with real black background it all comes alive again so i think this is a hardware issue as many agree also and its a bit of a let down to Samsung Quality Standards when we pay so much for a flaship device like this. Definitely there is room for improvment with this amoled screens.
[Galaxy S 4 General] windozeanti:
I have not noticed any screen smearing till now.
[Galaxy S 4 General] rosebud:
Right, I have tested using the white dot in the middle of a true black image.

I can confirm the issue does occur, but only when the screen is set to or just above minimum and not to the extent I see it as a problem, I still cannot seem to replicate the issue on settings window even at minimum brightness.

For me, this is a none issue however If the issue is more prominent on some screens I can understand how it would be annoying.

Cheers

Steve
[Galaxy S 4 General] Theshawty:
I may be one of the few to not actually give a rat's ass. I didn't care about it when the settings window was truly black and I don't care now when it's LCD-ish black (greyish-black).
[Galaxy S 4 General] guitarmafia:
Yep..it is not an issue for me...i have none of those probs while playing games or watching movies or wherever screen needs to show off itself..so y shud i care if my settings looks grey or there is smearing on some xda post..its not like m gonna read it while scrolling or anything..

I wud still prefer amoled over lcd anyday..

Again its just my opinion..everybody has a different view and i respect it..

Sent from my GT-I9500
[Galaxy S 4 General] dragon135:
You will notice if you play game "piggy drop"

Sent from my GT-I9500
[Galaxy S 4 General] takato23:
with high brightness you will not notice the smearing problem. With low brightness is when you can notice it
[Galaxy S 4 General] rdy2go:
Just try to read articles in Pocket app or in feedly using black themes.

I switched to ligtht/white themes killing battery life but avoiding smearing. Now my device lasts 3h screen time at best. F... great.

Amoled screen that's not really compatible with true black! The most advertised benefit of amoled is gone with this flawed screen.

What a shame.
[Galaxy S 4 General] titus1:
Bottomline..smearing is still there.
[Galaxy S 4 General] galaxysduane:
The smearing is also on the s3 with the 4.2.2 leaked firmware
[Galaxy S 4 General] dragon135:
Guys, the news here is that it happens in dark grey background (with dark blue text). Plz try the first post, use autobrightness.

Sent from my GT-I9500
[Galaxy S 4 General] rdy2go:
I did the test myself and I can confirm that.
[Galaxy S 4 General] ivkos:
Are you 100% sure about that? If that's really the case, it's probably some feature in the kernel that actually turns off pixels completely.
[Galaxy S 4 General] galaxysduane:
Yes im sure just double checked on my friends s3 with the leaked 4.2.2
[MDA III, XDA III, PDA2k, 9090 General] ichilton:
Hi,

I was wondering if anyone uses any other software to do SMS or whether everyone just uses the normal messaging app.

I've found that the standard app doesn't seem to do new lines - so when I get email alerts from Orange, they are all on one line which is hard to read.

Also, if someone calls when my phone is off, Orange sends me an sms alert with the number in. On my old Treo 600, it highlighted the number as a link - when I clicked on it, it popped up a box which allowed me to dial the number - and, if the number was in my contacts, their name appear in the title bar of that box - very useful! - on my M2000, the number just appears as plain text so if I dont know the number then I dont know who it is (you can't search contacts by a number can you??).

Thanks!

--ian
[MDA III, XDA III, PDA2k, 9090 General] BrunDog:
I am desperately seeking this "phone number link in SMS messages" too!

Anybody wanna tackle this one?

-BD
[Android Q&A, Help & Troubleshooting] ivanisevic82:
Hi, I have a strange but simple question.

Sorry for my english!

I need something (app, script...all is good) to create a margin in my phone.

Something like Hawkeye ShellInit 0.4.2 (that works in windows).

It creates any number of margins on the screen that maximized windows won't cover (much like the taskbar).

So I want that when I oped a specific app, it doesn't open is all the screen but it stops based on the number of pixels that I entered as margin.

Is possible to have or create it?

Thank you!
[Galaxy S II Q&A, Help & Troubleshooting] monnmb:
Ram status is 730/826MB. when press Clear memory Ram status no reduce.and my Gallery can't open.i do all wipe it not improved
[Galaxy S II Q&A, Help & Troubleshooting] gastonw:
How many apps you got?

Sent from the little guy
[Galaxy S II Q&A, Help & Troubleshooting] MistahBungle:
Android doesn't like free RAM by design & will 'reserve' as much as possible to enable it to allocate it quickly/easily as needed. What you're seeing is normal. It's not normally necessary to clear ram or whatever given the way RAM is managed by Android. The only time you should be killing apps is if one freezes on you. Clearing ram either manually or automatically with various apps designed to do same will tend to make the phone (more) sluggish.

OP - This is one of the better explanations of how Android uses RAM I've seen.
[Galaxy S II Q&A, Help & Troubleshooting] monnmb:
Thank you for all user.I found problem is folder vrtheme have files more than 100G (I don't know where come from?) My current is JB 4.1.2 XWLSW NeatRomLite v4.8 and Theme Blue Ginger Plus theme with 23 toggles by Spannaa.Perhaps because I flash Criskelo Theme V.6.4 and Criskelo Theme V.6.1 :p I format internal memory.It o.k

Thank you all users for your help again
[Galaxy S II Q&A, Help & Troubleshooting] NajuAynr:
clear 70% of ram just 1 click

Hai bro i got a simple code for clearing more of your ram

just do this simple steps ;)

step 1

* root your device :D

* then dowload the attachment "ram"View attachment 2926749

* extract it then u get a .vnt file

* open it in memo

* and copy the text

'' ro.HOME_APP_ADJ=1 ''

step 2

install the apk

root explorer

link http://www.appsapk.com/root-explorer/

* then open your root explorer

*grant super user permission

*go to internal memory/system/

*change into r/w (rewritable)

step 3

*long press on build.prop

*then open with text editor

*paste that code at last of build.prop without space

*save and exit

step 4

REEBOOT YOUR DEVICE

and see the change when clearing the ram

View attachment 2926778

EnJOYYYYYYYYY :laugh:
[Sprint Samsung Galaxy S III] sean19661:
I know this dosent have anything to do with the Virgin Mobile but in some ways it may.

It has been posted in android forums about being able to flash CM10.1 to the virgin mobile Galaxy S3 SPH-L10

suppose to have the same hardware as the sprint version can anyone confirm this Plesae I would love all the features to work. there is a stock

odin modem and also a stock flashable kernel too in the android forums in the section all things root virgin mobile Galaxy s3.

It would be awesome Devs would give this phone some love Thank You devs and guys. ps some one there also stated the had sucess with

the sprint cm10 rom:laugh:
[Sprint Samsung Galaxy S III] XxSilent.NightmarexX:
This should be in the q&a section I believe. But if the Virgin mobile version of the s3 is exactly the same as ours, you should be able to flash any rom as long as you have your APNs correct
[Sprint Samsung Galaxy S III] bricker1:
we are also struggling with the boost mobile version. we could use the help also:good:
[Sprint Samsung Galaxy S III] psusi:
Wait, where is the stock kernel for the Virgin branded one?
[Sprint Samsung Galaxy S III] quicksilvergts:
I concure, where do I donate to get this ball rolling :)

Sent from my HTCEVOV4G
[Sprint Samsung Galaxy S III] spacepanda:
Head over to phandroid, communities just kicking off there. Looks like we will have a working port of cm soon, just gotta fix a few issues.
[Sprint Samsung Galaxy S III] quicksilvergts:
Copy that.

I am getting ready to donate for the midnight rom.
[Sprint LG Optimus G] N4STYNATE:
Can someone with skills in editing perhaps make a BIOS Bootanimation for our LG Optimus G?

The closest I could find (specs wise) would be the LG Nexus 4, with very similar hardware

See thread here:

http://xdaforums.com/showthread.php?t=2085023

See animation here:

http://www.youtube.com/watch?feature=player_embedded&v=NLnSgxrFdWA

I think this would be a great addition to our devices content. Its got some great hardware, and I think the BIOS bootup would be the perfect way to show it.

Thanks!