Screen Smearing Issue - Galaxy S 4 Q&A, Help & Troubleshooting

Hi guys,
I have an I9500 and when I install any custom rom I get the smearing issue. I solve it with Synapse using custom kernels. But when I do that blacks are not black enaugh, they are gray! It really looks ugly especially on Ambient Display. How can I solve this issue without grayed out screen? If you use Synapse like I do can you share your screen tab here?
This method doesn't work http://forum.xda-developers.com/showthread.php?t=2259775
My settings:
Register hook and edge enchantment enabled, chroma multiplier is 27, colors are all 13
Im on latest lollipop.
Sorry for bad english.
Thx..

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[Q] Colour correction news? (Kernel)

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All those different screen calibrations.. Some with more blueish screens, some with more yellowish screens (like mine).
Is it actually a hardware flaw when the screen has a yellowish tint or could that be resolved with custom kernels which are able to mess around with those colour settings?
Sorry to bump, I do know that there's nothing yet. My screen has a yellowish tint too so I am eagerly awaiting this. Anybody got any developments/heard anything?

Wrong screen colors

Hi everyone,
I have encountered this problem with every ROM I have tried.
The problem, which is always visible mainly in the calendar app, is that the different colors of the calendars are always extremely dark, almost black! On my pc they are bright red, bright green and so on. I didn't change their colors on the phone.
It's an issue that comes up with every ROM. The colors aren't supposed to be that dark! The dark blu you see, i.e., is actually light blu on my pc!
Currently I am running PA and franco kernel. I also bought Franco's app hoping that the so much talked of gamma correction could do something but nope...
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Running stock would probably fix it.
I know, but I don't want to run stock!
Somebody must have encountered the same problem
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[Q] Galaxy S4 I9500 Screen flickering problem

Hi, started this thread to see if anyone had the same problem I'm having with my screen.
I have a Galaxy S4 GT-I9500 (Octa-core variation), it is running 4.4.2, rooted, stock Touchwiz.
The problem is that the screen starts to flicker almost as if it would want to turn off, when in low light conditions and auto-brightness on, it continues to flicker unless I set the brightness between +2 and +5. I can reproduce the issue without auto-brightness setting the brightness to the lowest, one notch above the lowest and there is no flickering. It is noticeable in white backgrounds and also when swiping down the notification center, that's the most noticeable instance but you can see it in the home screen and in any app.
I started noticing it when I had 4.2.2 Jelly bean (rooted), and I updated to Kitkat hoping it would be solved but it is the same, I updated through Kies and rooted, no Factory reset, I want to try that as last resort.
Funny thing I discovered is when I set Juice Defender to control my brightness it does not flicker even in -60% brightness, but when the dimming happens before the screen turns off it does flicker (and the dimming thing is controlled by the OS I think, not Juice Defender).
I wish I could put up a video but I don't have another phone to film it.
Anyone know if this is software or hardware? What can I do?
I'd like to add, that I changed the battery, disabled overlays in developers option, forced GPU rendering, tried Pimp my rom and played with all the settings, checked and unchecked every option in Display settings and it still flickered given the low brightness conditions.
I think I've found the best solution out there for most annoying screen flickering issues... Done a substential amount of digging and finally discovered the app "Twillight" works like a charm by enabling backlight control feature... Try it out first, then thank me and share your experience here ...

[Q] Screen problem please help!

Hello everyone,
I really need help with my Galaxy S4 i9505. Its past warranty time so that's not an option.
Basically problem is in screen brightness. When i adjust slider in higher brightness settings, screen becomes very washed out with pale colors and some lines in background. Its hard to explain so i'm posting video below.
I tried everything, hard reset, soft reset, flashed many different roms, including stock... no cure so far. Even in recovery screen is messed up, but in download mode everything seems to be OK.
Auto brightness is out of use so, currently i'm using slider adjustment where screen is somewhat usable.
Please, help!

Android 11 artifacts and flashing display

I have a blink as well as artifacts at the bottom of the display. Problem is only andorid 11, and some applications Telegram, Messenger and in these settings.
adaptive brightness - off
maximum brightness
resolution-QHD +
theme - white
Do you have such problems?
I think I can see what you mean it's like a little flicker at the bottom?
It's quite subtle, I've not had the issue on any phone ever personally.
Talk to OnePlus maybe for an RMA, also don't use 60hz or QHD.. Lock FHD on 120Hz
Might help.
Yes, and the display flashes.
Unfortunately, that looks like a possible RMA ...

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