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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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...
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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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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)
Since I've got my Xperia T I have noticed a weird screen behavior I hadn't seen yet in any other android phone, whereas the device adjusts not just the backlighting, but also the contrast and the saturation based on the onscreen content.
I outright dislike it, as it's not seamless - you can actually see them slowly changing while you navigate your android screens, and it's not limited to photos and videos, as someone says. It's system-wide.
Just try closing all tabs in Chrome (remain with the dark chrome background icon), and look at the status bar icons: they are pale white, not bright white. Then open a browser tab and watch the address bar colors (sand, white, and black text), go through all of the shades of grey, before finally settling to the right colors. It's not just Chrome... every time your display shows a dark scene going brighter, you can see it happen.
Couldn't it stick to the max contrast and saturation setting, just like what we see in the photo album?
Alternatively, is there a way to disable the bravia engine and make my screen behave like all other screens?
Thank you for any answer
thenext1 said:
Since I've got my Xperia T I have noticed a weird screen behavior I hadn't seen yet in any other android phone, whereas the device adjusts not just the backlighting, but also the contrast and the saturation based on the onscreen content.
I outright dislike it, as it's not seamless - you can actually see them slowly changing while you navigate your android screens, and it's not limited to photos and videos, as someone says. It's system-wide.
Just try closing all tabs in Chrome (remain with the dark chrome background icon), and look at the status bar icons: they are pale white, not bright white. Then open a browser tab and watch the address bar colors (sand, white, and black text), go through all of the shades of grey, before finally settling to the right colors. It's not just Chrome... every time your display shows a dark scene going brighter, you can see it happen.
Couldn't it stick to the max contrast and saturation setting, just like what we see in the photo album?
Alternatively, is there a way to disable the bravia engine and make my screen behave like all other screens?
Thank you for any answer
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Click to collapse
I never noticed it before but you are right, i see the same effect.
Even if i disable Mobile Bravia Engine in settings... now as i know it a bit annoying.
remoh said:
I never noticed it before but you are right, i see the same effect.
Even if i disable Mobile Bravia Engine in settings... now as i know it a bit annoying.
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Apparently that setting affects just the Bravia Engine behavior when watching pictures or videos.
I did notice that behavior on my XT screen but i don't think it's a bravia engine issue, i believe is sony stock roms problem. Actually i'm on recCoba's curiosity Rom, wich has the same acreen behavior, but i don't temember too well but i think when i was on jellybam rom the screen was behaving as a regular screen but as i said i can't say it for sure. Someone with a CM bases rom could tell if that happens too on those roms
It has already been discussed -
http://forum.xda-developers.com/showthread.php?t=2020892
Thank you for the heads up
Sent from my LT30p using xda app-developers app
If anyone cares, I made a quick video of the thing in action.
https://skydrive.live.com/redir?resid=75161877A71F52EC!296&authkey=!AOb1Cj-q3GGmAPM
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/
Hello,
I like the screen when I pull down the notification bar. If you notice it's darker but viewing angles are much better - it seems a little like IPS .
Does anybody know what and how is changed when the bar is down? I'd like to reproduce it to make the screen looks better.
I know there are some screen filters in google play but the result is not the same.
Its just dim the screen, there are loots of apps that dim the screen, but its not making screen better in any way, its just make it darker
I used this one:
https://play.google.com/store/apps/details?id=com.haxor&hl
Its nothing different than those apps. You just need to set good % value I think something between 60-75% should give you the same effect.
EDIT: just tested it, 67% give me the same effect
There are a lot of posts and review mentioning this problem about the camera, photos, and videos, but it's not just the output coming from the lens: it's the entire display.
It's not just that it's pinker than other devices: when you look at photos of humans or things you know were supposed to be yellower, it's noticeable and looks wrong, even without another screen to reference. Humans look especially piggy-pink. Sand looks pink. Wood looks pink.
Yes, it's possible to adjust color balance from the Settings menu, but if I adjust for reds, the whites become off-balanced: too yellow-green.
The color temperature wheel also does nothing for a separate issue: contrast and saturation. In Normal mode, it's too muted. Meanwhile, "Vivid" mode comically oversaturates. Compared to a Pixel 2 XL and Pixel 4 XL (and other screens, mobile and desktop), colors (in Normal) are more muted than expected. Parts of images that should be charteuse or neon are instead just nearly-pastel yellow-green. Darks and blacks are nearly greyish.
Can anything be done to calibrate the screen, via root, apps, or otherwise?