Ok this is kinda bugging the me to no end. Nothing is WRONG with the screen, as this only appears in certain places.
Here's what I mean: When I start up settings, or anything that darkens the background, you can see these lines: http://imgur.com/eCELgov,yPD8mMK#0 in the first image. You would also see ripples only around the jelly beans, but you can only see it in the ES Image Viewer window in the Recent Apps. But when I go back to my homescreen, the lines disappear. And this only happens with certain parts of apps or the settings, as I changed my brightness down to low as possible, and no lines or ripples.
I'm on Rastakat 4.4.2, and this is a recently bought tablet which has been working fine so far.
EDIT: This is probably a way better example: https://www.dropbox.com/s/a3r7gz5wjlwvq92/Screenshot_2014-01-01-17-30-16.png
Duskye said:
Ok this is kinda bugging the me to no end. Nothing is WRONG with the screen, as this only appears in certain places.
Here's what I mean: When I start up settings, or anything that darkens the background, you can see these lines: http://imgur.com/eCELgov,yPD8mMK#0 in the first image. You would also see ripples only around the jelly beans, but you can only see it in the ES Image Viewer window in the Recent Apps. But when I go back to my homescreen, the lines disappear. And this only happens with certain parts of apps or the settings, as I changed my brightness down to low as possible, and no lines or ripples.
I'm on Rastakat 4.4.2, and this is a recently bought tablet which has been working fine so far.
EDIT: This is probably a way better example: https://www.dropbox.com/s/a3r7gz5wjlwvq92/Screenshot_2014-01-01-17-30-16.png
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Click to collapse
Hi, Duskye...
It's always tricky judging these things from a screenshot... but it looks like you have light bleed due to screen lift on the right hand side of the screen.
I have a little light bleed myself on my Nexus 7, though nowhere near as bad as yours. I've taken the back of my Nexus 7, and I've noticed a screw is missing that should clamp the screen tightly to the frame, and thus allowing light to bleed from underneath. It's never really been a major issue for me, as it's only really noticable when the screen is really dark.
If, as you say, your device is new, I wouldn't waste time in trying to fix it yourself... you should get a refund/repair or replacement.
Also, if you have bad screen lift, the screen itself can be prone to easy cracking/shattering as it's not tightly clamped in the frame.
Screen lift/light bleed issues where a significant problem last year (I mean 2012, I forget, it's 2014 now) when the first batches of the N7 came out... but I thought those early production problems had now been ironed out.
One thing you could try... purely as diagnostic... is download from Google Playstore any one of the many testcard apps. They run the screen through a variety of coloured background's... including black... if there is no uniformity across the screen in black, then it's almost certainly screen lift. And you have a hardware problem.
And if this is the case, you should seek redress under warranty.
Good luck.
Rgrds,
Ged.
This happens on _all_ parts of the screen, it's not just that side, and, like I said, this only happens in certain parts, like say if the jellybean wallpaper had jellybeans falling from the top, I would only see those ripples _on_ the jelly beans, and the ripples move along with the jellybeans if they were in any other postion, and no where else. And I should probably mention this: This was not apparent when I had 4.1 on this. This only started happening when I installed Kitkat.
And this is probably me being uninformed, but if this a hardware problem, then how come you are able to see the problems from a screenshot it took from the device itself?
I don't think there is anything wrong with your screen. You are seeing quantization artifacts due to the "dimming". The degree to which you observe this depends on the original image.
For instance, look at your screen on Settings...Display.
All those subtle horizontal bands at the bottom of the screen are not intentional, but due to the fact that a "gradient" painted with a limited number of values will show intensity steps at each value transition, so long as your eyes can resolve that intensity difference. And this effect is always most pronounced at low intensity values.
For instance, "grey" values always have equal R,G, and B intensities, e.g.:
RGB
000 = black
111 = grey1
222 = grey2
...
254,254,254 = grey254
255,255,255 = white
So for instance the "intensity" difference between grey3 and grey4 is
I(grey3) = sqrt(3^2 + 3^2 + 3^2) = 5.196
I(grey4) = sqrt(4^2 + 4^2 + 4^2) = 6.928
(6.928 - 5.196)/5.196 * 100 = 33%
whereas the difference in observed intensity between grey240 and grey 241 is only 0.42%
You won't notice quantization effects in bright images, but you will when the same image is dim.
@Duskye Is this a live wallpaper we are talking about? There are lots of (ahem) "optimizations" that can be made (for instance sub-sampling) which sacrifice image quality for speed, so it is reasonable to believe that a software update could change things. Did you fool with any of the rendering or live wallpaper options in Settings... Developer Options?
PS Ged: When someone takes a "screenshot", they are not literally taking a picture of the screen, but dumping color values from a framebuffer. So it is not possible to capture "bleed" with a screenshot; you would have to use an actual camera for that.
Nope, that's just the regular default jellybean wallpaper, though it does this with any wallpaper.
And the only dev options I touched were USB Debugging, nothing else.
EDIT: I installed Carbon, which latest release is Jelly Bean, and the lines are not as apparent, in fact they're all gone from settings, there isn't even any ripples anymore.
EDIT2: I took a photo with Carbon as well, and made a side by side of the Rastakat and Carbon pictures: http://i.imgur.com/bk6ElGq.png
Duskye said:
Nope, that's just the regular default jellybean wallpaper, though it does this with any wallpaper.
And the only dev options I touched were USB Debugging, nothing else.
EDIT: I installed Carbon, which latest release is Jelly Bean, and the lines are not as apparent, in fact they're all gone from settings, there isn't even any ripples anymore.
EDIT2: I took a photo with Carbon as well, and made a side by side of the Rastakat and Carbon pictures: http://i.imgur.com/bk6ElGq.png
Click to expand...
Click to collapse
Well, there you have it - it's not hardware.
There are other possibilities as well - .JPG image files are partial DCTs (Discrete Cosine Transformations) on 8x8 pixel blocks. They are "partial" in the sense that compression is achieved by dropping high-frequency coefficients of the transform in each block. While all of this is standardized in the JPG format, there is no reason why a rendering method needs to compute the full image for display using all the coefficients - in the name of rendering speed. Similarly, when you "assign" the wallpaper, I believe the source file is copied to a standard location. It is possible that it is also down-sampled at that point in time, esp. if the original image was stored as a high-quality JPG image file (little to no compression).
Anyway, you get the idea - any or all of this can be affected by the ROM build.
Related
Just wondering if anyone else is seeing this same problem. When on a white screen like a Google search or aldiko, where the text is displayed portrait mode to the left and right of where text is displayed there are like faint bleed lines where the text is displayed. I tried with brightness all the way up and for the most part they go away but around 50% brightness if you look closely I can see it. Do any of you see the same thing. Just wondering if the amoled screens are like that the Samsung behold II is like that. But godly enoguh in landscape I don't see it. Just portrait. Just hoping nothing is wrong with my cool new phone.
Here are 2 pix of what I see
http://tauruspc.net/pix/1.jpg
http://tauruspc.net/pix/2.jpg
And a better one. Just look to the left and right
http://tauruspc.net/pix/3.jpg
I *JUST* answered your question on google support lol
I have the same thing but mine is definatly not that easy to see.
I just checked and i cant see what youre talkin about so i guess my answer is no
Talk about ironic timing. Weird will look then. And the weird thing is on xda page I don't see in Google support I do. LOL.
Also, I am using Dolphin Browser not default so that may be in play I'm not sure, try downloading it and see if you have the same problem maybe.
Yeh I will do that mainly seems with just black on white portrait mode like Google support. Not xda though.
Wonder if it has to do with power consumption. It takes more power to display white pixels. With the black on the same line maybe those lines with text are consuming less power on the line making the rest of the LEDs on that line of the matrix receive more power, making them brighter?
I tried for about 10 minutes to make that as unconfusing as possible lol
Makes sense. Weird only on portrait not landscape. but just spoke with HTC and they say that haven't heard of any problems like that and can send this in get a problems like that and can send this in get a temp one while they fix it and then switch around again
haven't seen much improvement setting manual brightness either.
I get the same thing, I think it is simply a scaling artifact. When you double tap to zoom the lines are no longer visible.
You can see this effect in the boot loader, but only adjacent (the right of) to where there is text at the left. if you look down where there is no text, and just white space, the ghosting lines across the white are not present.
either way, doesn't really bother me, you really have to look for them to see them.
Yeh double checking I see it there too. So yeh just not me then. Probably just amoled tech. the kind of blinky static lines is what bugs me. Don't happen that often and still kind of have to look to see those but since I have been using heavily since I got it about every 4- 5 hours I see where it gets like static lines horizontally about one pixel think blinky faintly in random spots all over the screen but kindof like static or noise from chip shielding or bad power frequency.
I was looking at Google Map when I noticed the colours changing. It was as if the contrast was suddenly being reduced making the colours look washed out. When I went to my Home screen my windmill live wallpaper is also looking washed out because the grass no longer looks very green. Has anyone else experienced this problem?
I attach some screen captured to show what it looks like.
Gaugerer said:
I was looking at Google Map when I noticed the colours changing. It was as if the contrast was suddenly being reduced making the colours look washed out. When I went to my Home screen my windmill live wallpaper is also looking washed out because the grass no longer looks very green. Has anyone else experienced this problem?
I attach some screen captured to show what it looks like.
Click to expand...
Click to collapse
Go to settings>display>screen mode you have changed the color management. And see if you have enabled auto adjust screen power. Maybe on of those are responsible.
Sent from my GT-N7000 using XDA App
Do you use Custom Power saving?
Could be your battery running out, so its reducing your display to save power.
Braxos said:
Go to settings>display>screen mode you have changed the color management. And see if you have enabled auto adjust screen power. Maybe on of those are responsible.
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
I've tried various settings but nothing solves the problem.
white-note said:
Do you use Custom Power saving?
Could be your battery running out, so its reducing your display to save power.
Click to expand...
Click to collapse
I'm not using power management and I have the phone on charge.
I've discovered why there's a difference in my Google Maps screens. It seems that sometimes the map is overlaid with a white circle which makes it look washed out. I attach a screen shot so you can see what it looks like. I think the circle is highlighting an area around my satnv location.
But I'm still not happy with my windmill which still looks washed out.
The colours on my windmill home screen have mysteriously returned to normal
Gaugerer said:
The colours on my windmill home screen have mysteriously returned to normal
Click to expand...
Click to collapse
wow man there is a huge difference.... no way my gnote is not doing this for sure... try to upgrade to 2.3.6 and see if that fixes it
you're sure it's not a 'feature' of the windmill LIVE wallpaper?
On the second image you have good weather, the sun is shining. On the first image however, it seems as if you have bad weather, no sun, only clouds, thus the gray layer.
So maybe it's nothing the Note is responsible for, but the weather dependend Live Wallpaper.
I know is not the same problem but maybe related,my device have some brightness change in the display,many times i'm reading and see the screen do some dimming the screen lower down the brightness and go back after like 30 seconds to the normal bright,I have enable the Auto screen power but i try desable and the result are the same.
UpSpin said:
you're sure it's not a 'feature' of the windmill LIVE wallpaper?
On the second image you have good weather, the sun is shining. On the first image however, it seems as if you have bad weather, no sun, only clouds, thus the gray layer.
So maybe it's nothing the Note is responsible for, but the weather dependend Live Wallpaper.
Click to expand...
Click to collapse
I think you are probably right for nothing has changed except the weather.
Well, I suppose I'm not the first, but still I hope this is fixed. There are parts of system especially menus and gradients which are rendered terribly. This is a software bug, since everywhere else, colours are rendered fine. I have screenshots attached. Is there a fix for this? Thanks
Sent from my Nexus 7
You are really complaining about the color of icons on system menus?
Sent from my Nexus 7 using xda app-developers app
rmm200 said:
You are really complaining about the color of icons on system menus?
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
no, if you look closely at the grey background on system menus you will notice it isnt a flat or evenly graded colour, down the middle is a line, the best way i can think of to describe it is its like an oil spot on a dark shirt, its not always noticeable but its there.
Exactly, thanks!
Sent from my Nexus 7
Seconded! And I was beginnig to think there was something wrong with my device. Yesterday I noticed a slight discoloration when looking closely at the popu menu backgrounds (like the one when you attempt to install a downloaded apk file). It appears in the right part of the box. It looks a bit like a hand, a splash of liquid but with sharp edges. When I rotate the screen horizontally the shape keeps being rendered in the same part of the menu and retains its shape. Curiously enough when I examined menus in other parts of the OS the pattern was different, more blockish. I think it will be hard to photograph so check your tablets guys. The screen on my device is otherwise fine so it must be software related.
I don't recognize what menu you are on, but on mine settings/apps shows no background blur like that. Manual lighting, 50 percent.
Sent from my Nexus 7 using xda app-developers app
For anyone willing to take a look, below are ID's for images uploaded to imgur.com (because of low postcount I cannot post direct links) - a screenshot of the install dialogue and one of the screen brightness.
OiH3X
0sOLD
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Click to collapse
juunai said:
Seconded! And I was beginnig to think there was something wrong with my device. Yesterday I noticed a slight discoloration when looking closely at the popu menu backgrounds (like the one when you attempt to install a downloaded apk file). It appears in the right part of the box. It looks a bit like a hand, a splash of liquid but with sharp edges. When I rotate the screen horizontally the shape keeps being rendered in the same part of the menu and retains its shape. Curiously enough when I examined menus in other parts of the OS the pattern was different, more blockish. I think it will be hard to photograph so check your tablets guys. The screen on my device is otherwise fine so it must be software related.
Click to expand...
Click to collapse
Yes a bug was reported to Google and submitted for a fix in the 4.2.1 update.. should be resolved, we'll see.
itisele Elec
Great news! Thanks for the info mate
See more here
http://code.google.com/p/android/issues/detail?id=39969
Update did not address the banding issues. Display still looks like crap. Ugh
rmm200 said:
I don't recognize what menu you are on, but on mine settings/apps shows no background blur like that. Manual lighting, 50 percent.
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
It's export menu in dropbox. In that link, it was shot in I think, notification ringtone menu.
Good to see Google is fixing it.
Sent from my Nexus 7
JavaJunkay said:
It's export menu in dropbox. In that link, it was shot in I think, notification ringtone menu.
Good to see Google is fixing it.
Sent from my Nexus 7
Click to expand...
Click to collapse
No fair blaming Google for an app problem. There are a million ways Dropbox could have messed that up.
Can you give me an instance that only involves Google apps? Like maybe in Google drive?
rmm200 said:
No fair blaming Google for an app problem. There are a million ways Dropbox could have messed that up.
Can you give me an instance that only involves Google apps? Like maybe in Google drive?
Click to expand...
Click to collapse
Any system dialog box. Go to settings and set a "notification tone" in the dialog box where you select the sound you can see horrible artifacts that look like dark gray mountains
That and set any gray gradient as a wallpaper and you'll see horrible banding
ingenious247 said:
Any system dialog box. Go to settings and set a "notification tone" in the dialog box where you select the sound you can see horrible artifacts that look like dark gray mountains
That and set any gray gradient as a wallpaper and you'll see horrible banding
Click to expand...
Click to collapse
OK... I went to Settings / Sound / Default Notification.
Then it gives me a choice of apps to use to browse to a sound. I chose Media Storage (the only Google one).
Now I have a list of tones and checkboxes, with a gray background. Brightness manual, 50%.
Holding the screen straight on, and tilting to look straight across I see no gradient or artifacts at any angle. Amazing off-axis range...
Anything else I can try, or is my device just "different"?
I have those gradients too, funny its not reproducible on all devices
rmm200 said:
OK... I went to Settings / Sound / Default Notification.
Then it gives me a choice of apps to use to browse to a sound. I chose Media Storage (the only Google one).
Now I have a list of tones and checkboxes, with a gray background. Brightness manual, 50%.
Holding the screen straight on, and tilting to look straight across I see no gradient or artifacts at any angle. Amazing off-axis range...
Anything else I can try, or is my device just "different"?
Click to expand...
Click to collapse
Could be. You on a custom ROM? or Stock 4.2 / 4.2.1 ?
ingenious247 said:
Could be. You on a custom ROM? or Stock 4.2 / 4.2.1 ?
Click to expand...
Click to collapse
Stock 4.2.
Not currently rooted - root makes multi-user unusable for me. Root Manager has it "temporarily unrooted".
I don't have a gradient background to try. That notifications panel is an even gray. No gradient.
Bump up the brightness to 100% you will surely see it if it is there. I just updated to 4.2.1 and it is still here. This update in fact broke my Android Beam, I can no longer send images from my Nexus S to Nexus 7 like I could on 4.2
Sent from my Nexus 7
Hi I just got my new LG G2 about a week ago, but I noticed there are these small barely visible horizontal lines across the screen, but they only appear in certain applications, specially when there's text or white objects contrasting darker backgrounds, lines appear to come from the text and or objects and extend thru them like the objects are sending them sideways is very weird, immediately I thought the screen came bad but I've been thinking it could be a software issue because as I said, most of the time they are nowhere to be seen like in the lockscreen or when playing games, in those screens the display just look gorgeous and has no issues, its only in certain occasion that you can see them, has this happened to anybody else and do u have any idea on how to fix it with software? or is the display just bad and I have to return the phone? I imported it so it would be a real pain to send it back for a refund.
EDIT: apparently I cant upload images larger than 256kb WTF? the last time I took a 256kb picture was in 2005...
I came from an S7 EDGE and I just got my OP5 and there's something I hate about my new phone. Every photos videos on YouTube, Reddit , internet in general looks washed out. The colors are good but when you pay attention, you can see the same artefacts you see on a highly compressed video/photo. In other words, the screen looks like it's not even a 8 bit color panel. Do you guys know a solution about this? I never saw this problem on any phone ( I'm a cellphone seller in Canada ), not even on my S7 EDGE, Alcatel IDOL 3, Nexus 5
Maybe it's because it's pentile or something
You might want to change the screen calibration method under settings / display and see if that helps at all.
Unfortunately the problem is still existent. Look at the uploaded screenshot with your phone The colors on the dialer supposed to be gradient but it's not. That my problem .
yungboss22 said:
Unfortunately the problem is still existent. Look at the uploaded screenshot with your phone The colors on the dialer supposed to be gradient but it's not. That my problem .
Click to expand...
Click to collapse
The dialer looks lighter at the top and darker at the bottom--are you saying there isn't enough transition between the two or that the colors in the screenshot are inaccurate? You might want to do a search for gradient android dialers (which should have screenshots) to verify the problem is with the phone rather than with the specific app you are using. All of the gradient screenshots I pulled up looked fine on my phone but the color changes were a lot more subtle than the one you provided. It's possible you have a bad display or that it's calibrated incorrectly for some reason. I've never noticed any problems with the colors on my OP5 and never read a complaint similar to yours.
You might want to make sure Night Mode or Reading Mode aren't on in settings because both would affect the colors.
Also make sure ambient display is off to verify that isn't doing anything screwy.
Have you rooted your phone or installed a custom kernel or anything like that? Do the colors look exactly the same when you boot into safe mode?
I see the banding in the dialer (the background where the dialpad is). Given that it's a screenshot though, that part is likely to be how OnePlus designed the dialer app (screen issues wouldn't show up in a screenshot).
Sent from my ONEPLUS A5000 using Tapatalk