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...
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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
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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)
On lowest brightness (its also a litlle bit visible at higher brightness) and single color background (white, gray... (loading pages on internet)) i see some black vertical lines... (see attachmant (its a bit overdone so its easy to see).
Is this a connector problem (not connected well) or do i have a faulty screen?
I only say possible, as it doesn't work completely with the note 4.
Basically, someone who goes by 'aaah' on the OnePlus forums made an excellent app that let's you add a gradient anywhere on the screen that can even out any tinting etc. It worked very well, but obviously doesn't make up for the loss of brightness as OPO uses LCD screens
With our note 4s however, there is no brightness shift, so we can compensate with a different colour where it changes.
Unfortunately the app, at least on my exynos note 4, doesn't allow you to properly change transparency when a gradient is applied. It works fine for a solid block, but that isn't ideal as the pink patches aren't solid but instead fade gradually. Hence why a gradient would be great for it.
If any android wiz kids out there could possibly patch the apk so that the transparency settings work then it would certainly help lessen the degree at which the colour shifts are noticeable.
For mine, its mainly the bottom right where the pink patch is more prominent. So I will always have a left to right shift around the keyboard area no matter what, but it would at least reduce the top to bottom shift.
Original link to the screen filter app: https://forums.oneplus.net/threads/screen-filter-rewritten-yellow-band-software-fix.141167/
So I bought my S21 Ultra last Friday. I lie with my mobile in bed late at night with brightness at its lowest with "dark mode". Notice that when I have dark gray backgrounds and open the keyboard, horizontal lines appear (thin light lines). They disappear as soon as I close the keyboard.
Someone who can test if you see the same thing?
So If I sent it back to samsung I can say that i have asked owners and they dont have that problem.
1 set brightness at minimum
2 darkmode on
3 120hz on
4 high contrast on keyboard
5 total black rooms
6 open play store and press search so keyboard appears
7 now I see thin lines (which disappears completely when I close the keyboard)
It looks like this
If it is application dependent (appears only when the keyboard is active), it might be a software alrifact.
Also, please bear in mind that OLED displays, when set to minimum brightness, might have a problem with displaying uniform colors. You might see clusters of tens of pixels that are just a tad bit brighter than the ones around. I've noticed this with every OLED display I have used in the last decade or so.
daniel_loft said:
If it is application dependent (appears only when the keyboard is active), it might be a software alrifact.
Also, please bear in mind that OLED displays, when set to minimum brightness, might have a problem with displaying uniform colors. You might see clusters of tens of pixels that are just a tad bit brighter than the ones around. I've noticed this with every OLED display I have used in the last decade or so.
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Click to collapse
Ok thank you.
Yes it's only showing when i use the keyboard.
My old note 10 plus did not have this problem.
Different screen, different version of Android and Oneui, maybe even different keyboard, keyboard version or theme.
check app named Display Tester https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en
robalm said:
So I bought my S21 Ultra last Friday. I lie with my mobile in bed late at night with brightness at its lowest with "dark mode". Notice that when I have dark gray backgrounds and open the keyboard, horizontal lines appear (thin light lines). They disappear as soon as I close the keyboard.
Someone who can test if you see the same thing?
So If I sent it back to samsung I can say that i have asked owners and they dont have that problem.
1 set brightness at minimum
2 darkmode on
3 120hz on
4 high contrast on keyboard
5 total black rooms
6 open play store and press search so keyboard appears
7 now I see thin lines (which disappears completely when I close the keyboard)
It looks like this
Click to expand...
Click to collapse
robalm said:
So I bought my S21 Ultra last Friday. I lie with my mobile in bed late at night with brightness at its lowest with "dark mode". Notice that when I have dark gray backgrounds and open the keyboard, horizontal lines appear (thin light lines). They disappear as soon as I close the keyboard.
Someone who can test if you see the same thing?
So If I sent it back to samsung I can say that i have asked owners and they dont have that problem.
1 set brightness at minimum
2 darkmode on
3 120hz on
4 high contrast on keyboard
5 total black rooms
6 open play store and press search so keyboard appears
7 now I see thin lines (which disappears completely when I close the keyboard)
It looks like this
Click to expand...
Click to collapse
What model, carrier and software build do you have?
Software build: (settings > about phone > software information - last 4 digits of SW build number)
Is this happening in all the apps? or just the email as shown in the picture?
try it on safe mode and see if it still happens. maybe you are using a third party keyboard?
AM3000 said:
What model, carrier and software build do you have?
Software build: (settings > about phone > software information - last 4 digits of SW build number)
Is this happening in all the apps? or just the email as shown in the picture?
try it on safe mode and see if it still happens. maybe you are using a third party keyboard?
Click to expand...
Click to collapse
SM-G998B
G998BXXU3AUHB (same problem with older firmware)
It happend in dark grey and some light color, swifty keyboard and stock samsung keyboard, showing must if i use high contrast in stock samsung keyboard.
Here is one more:
Display issue at 120hz and low brightness
My note 20 ultra has vague gray horizontal lines when displaying a gray background at the lowest brightness when running at 120Hz but it disappears at when the brightness increases or when switching to 60hz. Is this normal for AMOLED displays ?
forum.xda-developers.com
Strange no one can test it so when i send it to samsung and maybe get a new phone and the same thing will show on that one to..