[Q] 4.2.2 black screens in middle of some apps - Xperia Z Q&A, Help & Troubleshooting

hello
since I'm on 4.2.2 (rooted with doomlord easyroot)
I'm experiencing black sceens in the middle of some apps: it's running in the background if I touch the screen and eventually get back to normal , then black screen again
is it on the apps side or the ROM?
did someone experienced that?
any suggestions?
thanks

Backup your files and
repair it with Sony PC Companion, or Sony Update Service or flash another FTF file. (wipe everything) Do a clean install.

Related

LG Optimus 2X - Rear Camera and Flash Faulty?

Hello all
Recently picked up a LG Optimus 2X - everything seems to be ok with it, however the 'rear camera / flash' doesn't work ?
Choose the camera settings from the menu, the camera app opens up, but the screen is black, won't pick any image up whats so ever ?
Choose the 'front facing' camera and that works ok as it should
I installed a flashlight app, to check the flash led and again the led won't light up ?
Anyone come across this before and what other checks / remedies can I carry out to possibly get it working?
Moreso whats the possible cause of it not working in the 1st place ?
There is the orginal latest stock rom on it V20L - GB 2.3.4 - unrooted
Carried out a few data / wipe settings to see if that cured,but didn't.
Thanks for reading.
tsam19 said:
Hello all
Recently picked up a LG Optimus 2X - everything seems to be ok with it, however the 'rear camera / flash' doesn't work ?
Choose the camera settings from the menu, the camera app opens up, but the screen is black, won't pick any image up whats so ever ?
Choose the 'front facing' camera and that works ok as it should
I installed a flashlight app, to check the flash led and again the led won't light up ?
Anyone come across this before and what other checks / remedies can I carry out to possibly get it working?
Moreso whats the possible cause of it not working in the 1st place ?
There is the orginal latest stock rom on it V20L - GB 2.3.4 - unrooted
Carried out a few data / wipe settings to see if that cured,but didn't.
Thanks for reading.
Click to expand...
Click to collapse
try a factory reset....it should work.
or try to update with a LG update tool
Did that twice - recovery mode - reset / wipe data / clear caches / dalvik
Rebooted - same issue - rear camera blacked screen - no picture / front camera works !
Both camera lenses are free from dirt and blockage etc !
Sometimes the camera app freezes and force closes - suggesting it could be a software prob ?
Other Google Play camera apps have been tried with the same results.
The phone isn't rooted by the way now.
I did root and install two different versions of 'cm 7 and 9' roms with the updated 'camera' patch stock files that had been created for better results.
Same issues again, if there was a camera app or patch that I found that was for the rom I was using I used it.
However unrooted, fresh install of the original factory rom.
Used the LG updater windows program to see if there was an update, the program said the phone had the latest version - V20L - GB 2.3.4
Since you RECENTLY picked it up, I assume you have warranty.
If yea, just return it to the dealers.
If you want, you can try using custom ROM, but REMEMBER YOU MESS UP YOUR WARRANTY ONCE YOU ROOT THE PHONE so until you can be sure you can reverse it, just take the easy path and return it.
As I already mentioned in my last response yesterday, I have already tried 2 custom rom installations.
The CM 7 and the CM9 custom roms !!
The outcome when turning on the camera was exactly the same - black screen !!
Thus / thereafter reverting BACK to the original stock rom installation with NO root - for it to do exactly the same !!
i have the same problem, i even changed the back camera module with a new one from alibaba and it didnt help.i wonder could it be the main PCB card.
any ideas?
I think that the PCB is damaged if you even tryed different Roms I don't think that it is an software issue then. I will search a bit
Sent from my LG-P990 using xda app-developers app

In call number not being displayed

I upgraded the Xperia Z to 4.2.2 OTA (rooted and dualrecovery installed)a couple of days ago. Everything is fine with the exception of one thing. During a call, the phone doesn't display the numbers that are being pressed, for example, when I dial into a conf line, to enter the conf code I cant see what numbers are being pressed. Does anyone else have the same issue or is it just me. I dont want to reset the whole phone only to discover that its an issue with the actual firmware.
Appreciate any help.
Cheers
race4life
PS: this is first thread that i started on XDA YAY!
Backup your files and
repair it with Sony PC Companion, or Sony Update Service or flash another FTF file. (wipe everything) Do a clean install.

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I am afraid that there's a hardware issue, though I am not sure if it's because of the ROM or unlocking the phone because I didn't try the camera app before bricking the phone.
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anyway coming to the point,i had rooted it 4 months ago and using titanium backup..no problem there.... but a couple of days ago i had unlocked BL(backed up TA partition many times in these 4 months)using official method,installed boot.img of cyanogenmod 11 snapshot 10 and then flashed it.There was a strange problem! my old photos were not showing in photo explorer of CM,no vdos also showing in MX player even i had photos and vdos on both mem card and phone memory! everything was fine except those. I had used SD KITKAT FIX as well. Well,after 24 hours i was missing xperia UI and so i again rec=locked BL using Flashtool,then restored dry run of TA...ok everything..restored TA then....AFTER THAT I had flashed stock ftf of KITKAT 4.4.4 which I had made from official update process through sony PC companion.
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xperia z1 c6902 sim card not valid

Good morning, I have a problem with my xperia z1 install a AOSP rom since the stock could not do mirror with my TV.
The rom in question had many mistakes and decided to return to the original rom but installing the flashtool my phone, stick with this problem that does not recognize the sim card and an additional problem that the camera does not work opens but does not take pictures , besides I can not install any rom that is not official because the phone screen stays black and off.
I tried the rom dz strikers and the camera work anymore, just have not signal any idea that might be.
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