Black screen after unlocking. - Galaxy S 5 Q&A, Help & Troubleshooting

Hi everyone!
I'm having something similar to black screen of death problem. When I turn on my phone, it's working until I lock it.
When I try to unlock it, my screen is black and only the buttons at the bottom and the notification LED is working.
I've tried pulling out the battery and the sd card and holding the power button for 1 minute, and many different variations of this method, but it didn't work.
I'm running on CM 13.0 but it happens on every ROM.
Please help :crying:

This happens on a the latest stock ROM too? If yes, sounds like a hardware problem.

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HELP!! buttons not working

Today I noticed my hardware buttons aren't working(camera,red,green). I can't figure it out and it's making it super hard to use my phone. The lights on the buttons are also on full time. I can't do a hard reset because my buttons aren't working. Ive also tried installing other roms but i keep getting error 262 in the rom installer. Please help me guys.
Ok, I couldn't hard reset the phone, but I was able to reinstalled the bell 6.1 rom. THIS DID NOT SOLVE THE PROBLEM. The lights on the buttons are still permenently lit, even if the phone is turned off. The red, green, camera buttoms DONT work. Please help me. I've tried leaving the battery out for 20 mins as well as countless soft resets
Same problem
I have the same issue, but my lights aren't staying on. the phone will sit there and i can turn it on, then i can't turn it off or use the hardware buttons. I'm curious as to what you have installed on the phone. I had an issue with the hard lights staying when i used google latitude in their maps application.
Do you have the new version of Skype installed? Vers. 3?

[Solved] Can't turn on screen after kernel flash

Hi all.
Got a tweaked XXLB1 rom on my Note. Can't remember which kernel that came with it.
Tried out different kernels, but no matter which I try I have gotten this new problem.
Everything boots great. Rom starts. But as soon as I turn of the screen (click the power button) I can't turn it on again. Well, it turns on "underneath" i could take a screenshots with power+menu and heared the "shutter sound".
But the screen stays black, but the backlight increases very rapidly. And many little 'stars' (from the AMOLED screen) appears.
Have to reset the phone by holding POWER.
EDIT: Google found me something: http://forum.xda-developers.com/showpost.php?p=22737711&postcount=882

[Q] Screen off randomly

Hi all.
I'm facing a strange issue: my screen turns off randomly, everything else works (led, soft buttons,...) and when pressing the lock button i even hear the noise of the phone locking.
Normally when i unlock the phone the screen turns on ok, sometimes i need to repeat 2 times to get screen on, and while using the phone again the screen might turn off in 3 seconds or it might work of for several hours.
I'm attaching a log where a random screen of happens just two-three seconds after a random screen off and i would kindly request any dev to look at it and try to answer if it's a hard or ROM/kernel issue (actually i'm with crdroid rom and chronic kernel).
If it were a hard issue i've bootloader & knox ok for being able to reflash to any official rom but i'm a little scared about having a random screen off while flashing: i've no idea of how i should act if i fall in this situation.
Hope anybody might see the log and give me some light!!
Cheers all!!

[Q] Galaxy s4 screen not turning on

Hi people. i need help! all of a sudden led screen of my gt-i9500 whet dark. the phone is turning on and working. i can unlock my phone by drawing my pattern code and i the phone vibrates when i draw the pattern and i know touching is working. soft keys also are also working. but the screen is completely black. i thought that it can be software issue so i tried to boot into recovery and download mod. recovery mod shows nothing. but when i boot into download mod, sometimes there is a sudden green flash and sometimes the text and the android logo appear for like a second or less, in a very low brightness and then turns completely black again. so i guess it is not burnt. is there something i can do? please help me!!

[Q] Wake Screen Problems/Screen Backlight Flickering

I am currently running BlissPop ROM on a VS980.
I thought that this problem was ROM related but I've had it across three roms so far.
I read through some threads about Content Adaptive Backlight, but my problem seems to be different.
Whenever I unlock the screen, it lights up just for a second and then the backlight turns of.
Knock on and power button produce the same result.
I was willing to live with is since after pressing the power button about 5-6 times the screen would finally stay on,
but today the backlight started flickering.
Unlike CAB problems, the screen flickers, on the home screen, or on any screen randomly, regardless of the content changing or not.
Any help is appreciated.
tyrell22 said:
I am currently running BlissPop ROM on a VS980.
I thought that this problem was ROM related but I've had it across three roms so far.
I read through some threads about Content Adaptive Backlight, but my problem seems to be different.
Whenever I unlock the screen, it lights up just for a second and then the backlight turns of.
Knock on and power button produce the same result.
I was willing to live with is since after pressing the power button about 5-6 times the screen would finally stay on,
but today the backlight started flickering.
Unlike CAB problems, the screen flickers, on the home screen, or on any screen randomly, regardless of the content changing or not.
Any help is appreciated.
Click to expand...
Click to collapse
Got the same exact problem after software system update. Am thinking it could be software related,,,,waiting for lollipop, hopefully it will disappear
Try wiping the phone clean (all except internal) and then re-flash the rom of your choice.

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