Database Develop

i9000 screen problem

Hi all,
Got the Galaxy S for a month, pretty happy with it. Yesterday, the brightness suddenly gone up. The worst part is the display lost the gradient scaling and it is replaced by colour bands!
Apps like the stock video player for example. Before the video is played, you can see the grey control bar at the bottom covers by a lot of colour bands. The colour of the movie is all washed out as if you were playing it in 8 bit colour mode. Where the same avi played okay before, crystal clear and colour was rich.
Same thing with the charging screen while the phone is off. You can see the colour bands on the grey area of the shadow of the green battery. Just wondering if anyone has the same problem?
Cheers!

Factory reset :d

Tried all that full factory wipe, data reset, flash to different rom. Nothing works

Then your device's probably faulty. replace it.

Pretty certain it is. I took a screenshot of the video player and it looks fine but on the screen, you can still see those colour bands meters away.
I guess this indicates the LCD is faulty.

romhunter said:
I guess this indicates the LCD is faulty.
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Click to collapse
The galaxy s has no LCD its LED
Ive noticed when you slide down that tray from the top, when closing it mine has MANY TIMES switched to full brightness. But simply tapping the brightness button on the multi widget thingy makes it go back to how I want.

evil-doer said:
The galaxy s has no LCD its LED
Ive noticed when you slide down that tray from the top, when closing it mine has MANY TIMES switched to full brightness. But simply tapping the brightness button on the multi widget thingy makes it go back to how I want.
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Thats because you can adjust the brightness by sliding your finger accross the notification bar.... doesnt work if you have auto brightness ticked...

talboy said:
Thats because you can adjust the brightness by sliding your finger accross the notification bar.... doesnt work if you have auto brightness ticked...
Click to expand...
Click to collapse
I have auto brightness ticked, sliding still works for me
Standard rom btw...
Sent from my GT-I9000 using XDA App

Hi I have the exact same problem! But I didn't notice it before now wen I saw this thread. But all the colours are just fine when I play a vid, it's just the grey controlbar that is by many stripes of different colours, looks like 8bit colour. But when the vid starts playing its just fine, because it gets transparent. Should I get this phone changed, have just had it a couple of weeks.
Sent from my GT-I9000 using XDA App

Hi Radat,
I posted more info in the other forum including some screenshots. http://forums.whirlpool.net.au/forum-replies.cfm?t=1520586
Hope yours okay. I am going to call Samsung tomorrow.

romhunter,
yup, saw the screenshots, looks like quantization problem i.e. that colours are using fewer bits than normal. For example, RGB screen might use 24 bits per pixel, 8 bits per r/g/b colour, the screenshots seem to suggest only 5 or 6 bits per colour.
Hopefully this is just a software glitch, though you said you already tried factory reset / wipe, could it be a loose cable wire somewhere or maybe a problem with the screen to mainboard connector?

talboy said:
Thats because you can adjust the brightness by sliding your finger accross the notification bar.... doesnt work if you have auto brightness ticked...
Click to expand...
Click to collapse
awesome. theres so many little shortcuts like this ive yet to learn. thanks

On my sgs, there is a green colour attached to to the grey colours, I can see it really good when using Screen test app on the gray scale screen, all grey is sort of green!

romhunter said:
Hi all,
Got the Galaxy S for a month, pretty happy with it. Yesterday, the brightness suddenly gone up. The worst part is the display lost the gradient scaling and it is replaced by colour bands!
Cheers!
Click to expand...
Click to collapse
Just got a brand new device. Used it for about an hour, then the exact same thing happened - out of the blue.
Any possible home-front solutions? Having to take it to be serviced is a PITA for me ATM.

Mine definitely seems to have banding in the video player control pane before the video playback starts. Can someone please post a screenshot of how it should be? I haven't seen the banding issue anywhere else except the battery charging indicator when charging the phone when it's turned off. And as far as I remember they were always like that.
So can someone please post a screenshot of how it should be for me to compare.

I have the same problem appeared after upgrading to Froyo. Brightness increased (even it is high in the lowest setting) and color saturation also increased. As a result, i see bandings or lines where a color gradient exist. I added an example photo from "Samsung Apps" page. You can easily see bandings on the bottom. I see such things in a PC screen if color adjustment is not optimum. So there must be a way to adjust screen saturation and brightness by a software through registry i think. It seems like a software problem. I think it is a very rare problem, i found few people on the web complaining about it. Mostly HTC Desire, which use also Samsung Amoled screen, users complaining about it.
I did everything said on forums to solve it but no way. I flashed many different roms both eclair and froyo, use a software given in HTC forums to change RGB color, changed color settings through video player etc. Nothing worked. Please help

victor79 said:
I have the same problem appeared after upgrading to Froyo. Brightness increased (even it is high in the lowest setting) and color saturation also increased. As a result, i see bandings or lines where a color gradient exist. I added an example photo from "Samsung Apps" page. You can easily see bandings on the bottom. I see such things in a PC screen if color adjustment is not optimum. So there must be a way to adjust screen saturation and brightness by a software through registry i think. It seems like a software problem. I think it is a very rare problem, i found few people on the web complaining about it. Mostly HTC Desire, which use also Samsung Amoled screen, users complaining about it.
I did everything said on forums to solve it but no way. I flashed many different roms both eclair and froyo, use a software given in HTC forums to change RGB color, changed color settings through video player etc. Nothing worked. Please help
Click to expand...
Click to collapse
I looked at ur pic. I honestly dont see any problem with it. What is this banding ur talking about?
Sent from my GT-I9000 using XDA App

Bottom of the screen, around "2010 Samsungs Electronics". This part should be a smooth color transition from blue to transparent but there are circular lines between colors. Is your screen the same.

Another example. The one on the phone looks white on the upper part where a color transition from dark to light black exist and there are visible lines. But normally it was looking like the other picture (taken from notebook screen) before this problem

ah on that screen i already see 8 shades of blue, most be around 4k colors .. bummer though, it's normally a software problem, doubt that a conector has come loose. (but possible if it's a pimped up composite plug with Y/Pr/Pb, .. eh still impossible cos it's getting decoded before that)

[Q] Pink/purple hue on text when scrolling. Fixed with white balance app?

Hi everyone,
I have noticed when scrolling especially high contrast text (white on black or vice versa) there is a pinkish purplish tint/hue ghosting after the text.
This probably happens on only JDC panels.
But when you root->install White Balance settings and enter the setting menu even if you dont apply any changes and return back this problem disappears. If you reboot problem comes back. Opening white balance setting again fixes it until next reboot.
I am suspecting that white balance apk somehow changes refresh rate of panel and fixes the problem. If the problem is refresh rate/ response time of the panel ofc.
Anyone else also noticed this?

[Q] New xperia sp

Dear all,
i had purchased new xperia sp, i am having some query
1. if i makes brightness to zero then also it gives some brightness
2. color combination is not correct
tell me what will be issue
thanks in advance
Azhar

What so u mean that u made the brightness zero.
Did u used the slider bar in the display setting.
If yes then it will not make the screen black as it is not practical.
And what do u mean by the colour combination not correct.
Sent from my C5302 using Tapatalk

i had made brightness slidebar to lowest but its display is in brighter compare to other smartphone
colour combination is giving yellow shade in some sky looks

azhar.munshi said:
i had made brightness slidebar to lowest but its display is in brighter compare to other smartphone
colour combination is giving yellow shade in some sky looks
Click to expand...
Click to collapse
Different phones do different things - doubt it's a bug - you can install screen filter apps to further reduce brightness (I use one for phone use in the dark).
The orange/yellow photos that the camera on this phone takes is a well known feature of the SP...

(Q) is posible disable the low bit mode

In some watchfaces, when the watch go into low bit mode (black and grey colors) it lost quality and I wish to have the colors always

Mine does the same, almost all watchfaces, any fix?

Nobody can do it maybe, if a know something i tell you, but I understand that is normal in this watch

drjuliocalderon said:
In some watchfaces, when the watch go into low bit mode (black and grey colors) it lost quality and I wish to have the colors always
Click to expand...
Click to collapse
The black and grey mode is the "dimmed" version of the watchface, and is what the watch does when you set it to be Always On. Blacks save battery on the watch – however, if you want color, you're going to have to either find a watchface that supports colors on the dimmed version, or make your own. I use the app called WatchMaker, and you can customize which elements of a watchface to turn dimmed (black and white) or stay that way all the time.

[POLL] Are you affected by the "red tint at low brightness" issue

It has been reported - XDA, ZenTalk - by multiple Rog2 owners, that their displays show red discoloration under certain circumstances.
The two contributing factors seem to be screen refresh rate (higher freq -> more red tint) and brightness (lower brightness -> more red tint).
Steps to reproduce the issue:
1) Go to a dark room.
2) Add "Screen Frequency" toggle in the status bar, and lower the status bar to show the toggles;
3) Lower the brightness to 40%;
4) use the toggle to swap frequency from 60Hz, 90Hz and 120Hz.
If your unit is affected, the color of the dark grey areas on screen will increasingly shift toward red as you increase the refresh rate.
Is your phone showing these symptoms? Please share your experience by participating in the poll above.

Same here, hope its just SW issue and will be fix on future updates ?

Yep, I find it most annoying when i'm in a dark room and viewing images or talking over video whatsapp, the pics/vid colours are really dark and reddened, especially skin tones...

to all who answer the poll, pls take photos from the display with another phone and tell us their varriant
specially those who said no!

it seems like my phone doesnt have 40% brightness rofl.
it goes from 39 to 41.
but i dont have that issue with under 40% anyway..

Just a quick question, has anyone tried with an actual grey background? I get the same effect on the screen when the top bar is pulled down but if i look at a grey color palette i do not have this issue. I think its just a issue with the color overlay that asus has set on the top and bottom bar.

Yeah, the red tint is there under 30% brightness at 90 and 120hz, but not as intense as in the picture ?

Only noticeable with nightlight on for me. At lower than lowest brightness controlled by app.

I've only noticed it with the pull down quick menu. but TBH im 50% or above brightness anyways. You can tell the oled panel is red biased - something thats common in industry with oled manufacturers. Samsung went through a yellow and blue bias, Sony had a red tint issue.. Doesnt really phase me as the phone is otherwise sublime

Look, I am telling you, all the units have the same effect.
Those who voted no they are liers that are practising fanboyism or they don't have the phone at first place.
Anyway, if you cannot get along with that then I advise you to return it/sell it and get a device from another brand.

change Theme will help maybe other dark theme.
because white theme not that effect
if anybody vote No, I think they don't use dark theme with orange color.

Yeah there is no lottery here as all displays are affected. Just people in denial or people with the wrong settings who say they have no red tint

not sure if it's just me, but mine seems to have more red tint when the refresh rate is set to 90hz compared to 120, and no red tint at all in 60hz

Ccion said:
change Theme will help maybe other dark theme.
because white theme not that effect
if anybody vote No, I think they don't use dark theme with orange color.
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Click to collapse
i dont have it. tried all. dark theme and white theme. Not getting any red tint.

weyrulez said:
i dont have it. tried all. dark theme and white theme. Not getting any red tint.
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Would you mind if you can take a screenshot with low and high brithness just to show how it looks as you saying you are not affected by the red tint would be greatly appreciated

ased10 said:
Would you mind if you can take a screenshot with low and high brithness just to show how it looks as you saying you are not affected by the red tint would be greatly appreciated
Click to expand...
Click to collapse
Here it is.

weyrulez said:
Here it is.
Click to expand...
Click to collapse
You have to take photos of your screen with another phone or camera.
Screenshots are grabbed directly from the frame buffer of the phone, i.e. they show what the phone intends to display, not what it actually looks like on screen.

So in my device its like this,
at 0-30% brightness with dark mode on
60hz - 40% red tint, 90hz - 10% red tint, 120hz - 30% red tint on grey backgrounds .
at 40% brightness and after the red tint goes away.
so weirdly there is less red tint in 90hz mode.

People who have affected devices, can you highlight which variant of ROG2 you have?
For me:
Tint : No
Variant : Tencent
P.s: i believe that the indian variant is mostly being reported to have this issue.

Thugsin313 said:
People who have affected devices, can you highlight which variant of ROG2 you have?
For me:
Tint : No
Variant : Tencent
P.s: i believe that the indian variant is mostly being reported to have this issue.
Click to expand...
Click to collapse
Mine is indian variant and yes its being reported in mostly indian variants.