Help Needed "Blank Screen Instead Lock Screen" Some Times - General Questions and Answers

Hello Developers
I Have Lenovo K3 Note
Indian Variant K50A40
Updated To Latest
K50a40_s121_150813_row
I Faces Many Problems With Stock ROM (Like Touch Screen , Lagging And Network Problems ETC)
So I Decided To Flash A Custom ROM
Downloaded
Aosp ROM
Successfully Flashed With CWM Recovery
Without Any Errors
But After Few Minutes Of Using
Phone Goes To Blank Screen After Lock
(I mean Blank Screen Instead of Lock Screen)
Now Tried Many Times Lock Button
But Same Blank Screen
I Have Removed Battery And Put Again
Phone Again Working Fine
But After Few Minutes
Again Same Problem
So I Thought This Is A ROM Bug
So I Have Downloaded Other ROM
Nexus ROM
And Flashed successfully
After Using Of An Hour
Same Problem Starts In Nexus ROM
Then Downloaded The Official Dev ROM VibeUI_2.8_1540
And Flashed That
But Same Problem Again On This ROM Also
So I Have Flashed Stock ROM With SP Flashtools
In Stock ROM , There Is No Problems Like That
So I Have Flashed Again custom ROM
But Again Same Problem,, revert back to stock
Facebook Developers Says I Am First Who Facing This Type Of Issue
So Please Anyone Help

I think you have a problem in Keyguard.apk

Related

[Q] jellybean rom (CyanogenMod 10 or 9) showing animation and not satarting the phone

i was using CM10 or so i don't exactly remember now.I was using it since 1.5 months back.today suddenly when i opened my bluetooth to trasfer some files ,my phone suddenly restarted and since then whenever i try to open my device it shows CM animation and doesnot moves further and shows the homescreen.i had used AOPK Rom for ICS update and before that the oxygen rom for 2.3 update. i never faced this problem with them.
and to add further my problems ,the Clockwork Mod Recovery is also not working .whenever i try to open CM recovery it shows a YELLOW SCREEN and on it its written -" EMERGENCY MODE". so i am neither able to flash any other rom or last backed up rom.please help.i hope my device is not bricked up as the animation is coming but the phone is not opening up.am i right??
please suggest me what to do to make it work again ...
Thanks for any help.....

[report]BUGS OF ALL CUSTOM ROMS

REPORT BUGS OF ALL CUSTOM ROMS​
Guys report bugs of custom roms here so devs can solve and shortout.
Post bug with custom rom name with its version.
And explain your problem clearly so dev can understand it by seeing one time without asking you again.​
bugs
In color os after after rebooting 2 or 3 times if we turn on the wifi it stucks at obtaining IP address.It keeps saying that.
chanti548 said:
In color os after after rebooting 2 or 3 times if we turn on the wifi it stucks at obtaining IP address.It keeps saying that.
Click to expand...
Click to collapse
which version?
version 1.2 and the problem still occurs even after applying patch
In sgalaxy v2 when I tried to install xposed framework for the first time it installed and phone booted up properly but it always restarted in 2-3 min so I disabled it from recovery....
And now when I am trying to install it again it is causing bootloop any help please????
In pixel plus ui 5.1 everytime i open an app it keeps on hangging or lagging and when i open a game it also keeps on lagging and worst force close please fix this my device is redmi note 9 pro global
hello xda developers, i have a issue regarding oneplus 7 pro, I installed pixel experience rom, it worked very well for 2 day, then I rooted it, after 1 day of rooting while scrolling through Instagram my device crash and stopped working, it doesn't turn on normally, it goes to fast boot mode from their also it just turn on the oneplus bootup screen and shows a pixaleted (shown in photo and video) screen and automatically switch off. i have tried to factory reset from recovery and also re-install the rom but still same response. what should i do?

[SOLVED] XT1033 with 4.4.4 pre-installed has problem in rooting/custom recoveries

After searching for few days and trying different methods I came to the conclusion that there is an issue in rooting and flashing custom recoveries in XT1033 dual sim phones that were shipped with android 4.4.4 as default ( Most probably the ones sold in august 2014 in India )
In detail...
at least Im lucky because I could successfully unlock my bootloader, but for some the unlock code given by motorola gives " Password incorrect!/OEM unlock failure!" . This is the motorola forum dealing with that issue , more details are int he forum Bootloader Unlock Problems?
So, back to the point, This is the issue..
After successfully unlocking bootloader, I tried flashing custom recoveries, First i tried philz, but when i tried to enter into recovery, phone rebooted- it showed the bootlogo and then some a black blinking screen, the blinking is random, that screen remained until i long press on my power button which boots my phone in the normal way, after that whenever i try to select recovery, what i get is the black screen
This was the case all the recoveries except twrp . In that case, it showed black screen when tried to get into recovery, but if I wait for a minute, the screen times out and after waking up the display by pressing power button, what i see is the twrp recovery window saying "swipe to unlock " but unfortunately touch doesnot work, so i can not unlock it, therefore cannot use it
this issue is present only in phones XT1033 that was pre-installed with 4.4.4
I have tried almost all the recoveries, also tried modified recovery method from modaco
those who have OTAed from 4.4.2 to 4.4.4 were successful in running custom recoveries, but i couldn't find anyone with preinstalled 4.4.4 running a working custom recovery
anyway, somehow the root access can be obtained by sacrificing a working recovery
So, I post this,hoping someone will find a solution soon and if anyone has any feedback please share your suggestions and experiences
edit: problem solved
This is just to inform all those who got their phones with 4.4.4 pre-installed and were suffering from black screen when booted into recovery.
A new version of Philz recovery is released by its maintainer for moto G , which is compatible with the newest bootloader or baseband ( whatever )
Just go to Phil'z recovery and download the latest version ( only 6.57.5 or above )
Devs plz.
can any devs look into this issue, i guess every new motog users from india is facing this issue.. I found another one who bought motog today ( in india ) facing this issue, and many others too...

[Q] LG G2 (ls980) boot loop problem,HELP...!

HELLO fellow android users,i am having a problem with my lg g2 sprint(ls980),i am running android 4.4 kitkat(ls980ZVE) but i decided to use the latest cyanogen mod nightly package,i order to do that i installed TWRP using Auto rec app,it installed TWRP successfully then i rebooted into The TWRP recovery and installed the cyanogen mod 12 and GAPPS,it installed successfully then rebooted my G2 but unluckily my phone got stuck at the lg logo,it keeps rebooting at lg logo,i know how to flash back to stock rom but i want to use a custom ROM,
A HELP will be appreciated...
THANKS IN ADVANCE...
BigRobM said:
It seems, based on my past experiences with custom roms, that you flashed an incompatible rom to your phone, causing the loop.
The room might say it successfully installed in recovery but more often then not the rom itself is to blame.
Try a different rom and if you are able to boot your phone from it, there's your answer.
Good luck!
Click to expand...
Click to collapse
thnx,but however it automatically rebooted into the ROM but the other problems i am facing are that some google apps like facebook messenger and google hangouts stops responding randomly and in settings of audio/volume when i try to change ringtone it stops responding it is irritating me...

XT1033 : ROM Bootup gets hangs every time

Hi Guys,
Prelude : 2 months back, my pure stock Moto G experienced i guess a battery drain and refused to start the next time onwards. When it was powered on, it just got stuck on the M Logo of the bootup. After the help from @lost101 & others, i was able to flash the custom recovery & rom and got the phone to bootup atleast although faced the same issue which i'll be writing below now.
Since that event has happened, everytime I flash a custom rom, the installation happens without any glitch which includes the rom.zip & gapps_pico.zip. Now when the ROM bootups, the startup screen shows up after which it starts optimizing apps. That's where is the issue starts.
For eg. optimizing app x (single digit) of 101, it doesn't goes beyond that point even after waiting for 15-20 mins or so, and i've to manually reboot using the power button after which again the optimizing apps screen comes up and this time the figure is optimizing app xx of 16/17, and in this turn the phone successfully boots up to the setup screen and works as normal. But after a few moments when i'm done setting up all my apps and everything, random issues turn up for eg. the notification quick tiles won't drop down. And when i restart the handset, again it shows the optimizing apps screen, the phones boots up to home screen but random issues pertain.
I've tried ROM's like Stock Debloated (5.1.1) , CrDroid, CyanPOP, RessurectionRemix all based on 6.0.1.
Before installing any ROM, i do an advanced wipe and all format the data. Right now the handset is running CyanPOP but the main issue is i'm unable to access the notification dropdown. It doesn't goes beyond the header.
One more thing, I installed RR (xt1022 specfic) with same pico_gapps on my Moto E & the rom booted up in no time and working as smooth as butter till date with no issues whatsoever.
I'll be helpful if some one can diagnose the issue. Thanks
BBThumbHealer.
Did you try flash stock firmware and then flash a costum ROM ?
@Eurofighter_ty : when the issue first happened, what I remember is that I tried installing the debloated stock ROM of 5.1.1 and not the pure stock having all the unnecessary gapps. And similar issue was encountered. Same thing happened with other custom ROMs.
Today I've now reverted to a previous version of CrDroid 6.0.1 released in April and it at least runs fine when in use although a reboot causes the same issue. However, CrDroid June update and CyanPOP had the issue in which the quick tiles didn't drop down along with refusal of bootup.
Try to flash the stock ROM via fastboot with all files

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