[Q] Does my Note have a black clipping / black crush screen bug? - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

Here's the picture with the test image.
http://img40.imageshack.us/img40/6136/20121220181102.jpg

Looks like it. Don't worry about it though, you probably won't notice it in normal use.

mine is so noticeable when I play darker movies like Dark Knight. All the black clips It's so sad. I haven't read enough to find a work around, and I don't think there is one.

Do new Notes 1 (the N7000), ones produced recently (eg. 3/6 months ago) still have this bug? If yes, is the display better than displays of 1,5 year old Notes?

I have the initial release of note and thank God never experienced any such thing.
Sent from my GT-N7000 using xda app-developers app

Dont use powersave and keep auto screen adjustment off. Also keep brigtness up,all help
from the man hiding in your attic....

Related

Is Note pleasant for night reading?

I've seen many Youtube Note videos with max brightness (some about e-reading), but almost none with the lowest brightness setting.
So, what do you think of reading at night with the Note, with low or no exterior light? Are white letters on black blackground too bright that becomes unconfortable?
What is your experience with apps like screen filter?
Those who come from HTC phones, do you find Note's screen more stressful to your eyes?
I've owned htc and sony phones and the Note's screen is very vibrant and great for night reading. Even on the low brightness in a dark room, you won't have trouble to read unless you have a bad eye sight.
Only people who are used to smaller screens or have pain in the eye will find the night usage painful for their sight. I use it every night before sleeping - no complains so far.
My fear is that Note will be too vibrant and brightfull and will strain my eyes.
For instance, I prefer reading at night with my HD2 than with my Asus Transformer, because it has a lower brightness level.
I don't know about you but I've also own a HD2 and I found the amoled screen very pleasant compare to every htc phones. The brightness can be toggle to suit you. But it's better that you test before in a shop if you are afraid.
There's an app called screen filter on market where you can lower the brightness until the letters are almost invisible. Great for night time reading!
Sent from my superior GT-N7000 using Tapatalk
I use it on my HD2, but I've read here that Note's screen doesn't deal well with it and the image becomes greyish
Zamboney said:
There's an app called screen filter on market where you can lower the brightness until the letters are almost invisible. Great for night time reading!
Sent from my superior GT-N7000 using Tapatalk
Click to expand...
Click to collapse
Yep, I find it easy to read at night but only with screen filter. Must have app.
It is pretty bright at night, even with white text on a black background, but no problem if you use Screen Filter or one of the other several similar apps to dim it further. I have toggles on my home screen for several different filter levels for different purposes. Also, I use the night-vision mode that comes with Chainfire3D to turn it to red text on a black background, for even better night time reading.
With Fbreader you can just change the color of the text to something closer to black and have night mode with the lowest brightness setting on. Voila! Very clear and easy to read in pitch dark.
.....
My experience is a little different to others in the thread.
I also come from using an HD2 and to me, reading at night is a weakness for the Note. Even with saturation and contrast adjusted, the pentile display really stands out to me when you're (a) in a dark room and (b) holding the Note quite close to your eyes.
Both these are true when I'm reading. It's not particularly uncomfortable but just a bit annoying.
Could you detail further the 'pentile experience'? You see pixels or 'grain'?
I've had lots of other phones and can with certainty say that I've never had a book reader as good as my beloved Note. Pentile or not.
Sent from my superior GT-N7000 using Tapatalk
myself11 said:
Could you detail further the 'pentile experience'? You see pixels or 'grain'?
Click to expand...
Click to collapse
I can see the separation between the pixels as I tend to hold it quite close on a low brightness when reading. It doesn't make it any more difficult to read, and of course the resolution outweighs that negative, but it just makes it look a little bit less perfect.
I am using Screendim application and it works much better than screen filter. There is Screendim trial just for three days.
Amoled screen cannot be made lower brightness than the default so it must be using contrast features to make it dimmer.
I have to say that reading is the primary reason why I bought the Note. I read a lot of ebooks. I find the Note to be a perfect size for reading at night in bed.
I have never found the brightness an issue... What u need is a good reading app. Thats what makes the difference.
I use Moon Reader Pro and epubeader (free on the Market and can also read .mobi). Both these programs have the ability to change the text color and background and brightness.
I find that black background with pale grey/blue text is the easiest to read while conserving most battery power.
For me, Note is amazing, and if talking about brightness, it can auto-adjust itself.
I agree with documents transformed to pure black backgrounds and maybe 10% black to white text color is perfect for the eye, so you can almost fall asleep while your phone saves battery.
For some reason ScreenFilter worked better on my S2 than it does on the Note. Using ScreenFilter just makes the picture look bad... washed out and difficult to read. I wish my Note could have lower brightness on the lowest setting.
Maybe Samsung doesn't want to go lower to avoid showing imperfections.
Tubgirl said:
For some reason ScreenFilter worked better on my S2 than it does on the Note. Using ScreenFilter just makes the picture look bad... washed out and difficult to read. I wish my Note could have lower brightness on the lowest setting.
Maybe Samsung doesn't want to go lower to avoid showing imperfections.
Click to expand...
Click to collapse
I find it better if you use the Voodoo screen tuning app - worth trying

Contrast Issue

After watching a YouTube video from the app and I go back to the home screen everything is over exposed. the only fix I found was to lock and unlock the screen again. Anyone else having this problem?
I had noticed this once before when using Google Now but I wasn't aware what had caused it. At first I thought it was just the screen but now that I tested it with a youtube video you're right. When it screws up the colors it is really bad looking in Google Now because GNow relies on such a subtle distinction of colors, like the grey on grey. When the screen is working normally is looks fine but after a youtube video it looks really bad, the two greys meshing together. I'm really glad it's just some software issue. I remember looking at the screen once and thinking man those are some bad colors but the screen is really pretty nice when it's working properly.
Yes i do notice the same thing hoping Google comes with an update fast glad to know is not just me
Sent from my Nexus 7 using Tapatalk 2
fingers crossed it's a software problem only...
Sent from my Nexus 7
ya, I can confirm this happening with mine too. Didn't know that a lock/unlock fixed it (until a software fix at least). thanks
Sent from my Nexus 7 using Tapatalk 2
manually adjusting your brightness seems to help
Sent from my Nexus 7
Most videos does this to my Nexus 7.
Probably Nvidia PRISM power saving failing to shut off. Annoying. Software update should fix it.
Sent from my Nexus 7 using xda premium
I don't see this issue on stock. Return to stock and see if it goes away.
mi7chy said:
I don't see this issue on stock. Return to stock and see if it goes away.
Click to expand...
Click to collapse
I'm on stock, not rooted, 4.1.1, and getting this issue usually after watching YouTube or other videos
Sent from my Nexus 7 using Tapatalk 2
I'm curious, I'm not seeing any of this and am wondering if you guys are running your screens at full brightness or something.
I have my N7 set to auto most of the time and am not seeing these types of contrast issues.
Sent from my Nexus 7
My Nexus is stock (but unlocked and rooted). I run my Nexus 7 almost all the time at 40% brightness.
I get this over exposed looked after playing most videos. Happens with YouTube, Play Movies, Gallery, pretty much any videos from any source. Turning the screen off and on works. Or I could just wait an minute and watch the screen gradually fade back to normal-ish.
This isn't my only issue though. My screen also seems to be poorly calibrated. Even without the video playback issue, some of my colors are faded, and whites are over saturated all the time.
Don't know if the two issues are related, but I'm going to try exchanging it because some people say theirs doesn't have these issues.
PS. I don't use auto brightness, that makes my screen way too dark (seems my auto brightness setting keeps my Nexus 7 at minimum brightness most of the time).
I have this issue (as well as minor screen separation), but can't replicate it consistently.
I just assumed it was the screen just 'waking up' from full screen mode, it usually goes to normal after about a minute.
Rarely i see a minor screen flicker/ or tearing (sortof like oldschool CRT television flicker on a few scan lines) during this 'recovery'
spovat said:
I'm on stock, not rooted, 4.1.1, and getting this issue usually after watching YouTube or other videos
Click to expand...
Click to collapse
Interesting now that we're on level playing field. Do you have auto-brightness or hard set?
mi7chy said:
Interesting now that we're on level playing field. Do you have auto-brightness or hard set?
Click to expand...
Click to collapse
nope. brightness set to around 25%. like others, I can't always replicate but it usually happens after watching videos. locking and unlocking the device immediately restores normal contrast. This is the only semi issue i have on my n7. it doesn't even bother me that much, knowing it's a simple recovery
Sent from my Nexus 7 using Tapatalk 2
mi7chy said:
I don't see this issue on stock. Return to stock and see if it goes away.
Click to expand...
Click to collapse
the problem lies within the software. perhaps you're a lucky one who is somehow avoiding this problem or you don't notice the problem yet.
Sent from my HTC One X
I have the same issue with my N7. Android 4.1.1 completely stock, out of the box. It seems to be a problem with the hardware decoder as using software in MX player does not seem to trigger it, but the gallery player does. I see this not just after video playback, but around 5 seconds after starting playback when I begin to notice I'm losing so many details in highlights. A white contrast test on www.lagom.nl clearly shows the horrible detail level. I hope they fix it soon.
sharp2G said:
the problem lies within the software. perhaps you're a lucky one who is somehow avoiding this problem or you don't notice the problem yet.
Sent from my HTC One X
Click to expand...
Click to collapse
I have the same problem but how are you so sure that it is software problem. If it is a software problem then why do you get a screen shot showing no problem when in reality you can see it on your screen that you are indeed having problem on your screen at this very moment.
Sent from my Nexus 7 using xda premium
Another thing is that it only happens if you watch video in full screen. If you watch YouTube video not in full screen i.e. in portrait then there is no problem of over exposed colors.
Sent from my Nexus 7 using xda premium
saadi703 said:
Another thing is that it only happens if you watch video in full screen. If you watch YouTube video not in full screen i.e. in portrait then there is no problem of over exposed colors.
Click to expand...
Click to collapse
Does it occur if you watch the free Transformer movie? Just curious since it doesn't for me.

[Q] Is there a gNote WITHOUT black clipping/crush/color rendering, etc.??

The question is simple: is there a Note with a good screen? Simple test: is there a note that shows 11 as a first noticable number on this picture? (If you can barely discern below 11, that's fine)
http://www.dodaj.rs/?w/zW/2uzMNrCj/untitled.jpg
You have to be in a dark room to test this. I tried 7 different Notes and they all show from 4 and one from 1.
(tried this on an S III and it shows from 11)
yes it shows
a person with a Note (or S3) without the black clipping issue would be very lucky. it's hard to find a stock that has a perfect screen. it is after all the sickness of SAMOLED screens.
Re
cptnappy said:
a person with a Note (or S3) without the black clipping issue would be very lucky. it's hard to find a stock that has a perfect screen. it is after all the sickness of SAMOLED screens.
Click to expand...
Click to collapse
Yes, I know, but there are many people claiming to have no issue at all. Here is one YT video that shows 90% reduced black clipping
http://www.youtube.com/watch?v=Jl9ZmsIji7U
So, there is hope..
I've read somehere in our Note's forum that just by changing kernels on your phone would change the MDNIe on your Note, thereby decreasing the black clippings on your phone.
lol pixelation in dark areas is that black crush, or not being able to read a specific number because screen brightness/contrast/gamma is low?
Sent from my GT-N7000 using Tapatalk 2
Mine looks fine but how does this prove that my screen is fine? Gonna watch a 'dark' video and see if I do get the black crush, I don't remember if I do or not.
Edit: Mine is all good!
Sent from my Galaxy Note running Cassie's XtraLiteRom ICS v6 using XDA Premium xD
Re
sujal said:
Mine looks fine but how does this prove that my screen is fine? Gonna watch a 'dark' video and see if I do get the black crush, I don't remember if I do or not.
Edit: Mine is all good!
Sent from my Galaxy Note running Cassie's XtraLiteRom ICS v6 using XDA Premium xD
Click to expand...
Click to collapse
Post a picture or it did not happen. Test in a dark room. Proofs needed:
1. picture with the numbers showing on the screen
2. Take a picture of the calculator running
Don't use screenshot, you have to take a picture with a camera
shatroghistro said:
Yes, I know, but there are many people claiming to have no issue at all. Here is one YT video that shows 90% reduced black clipping
http://www.youtube.com/watch?v=Jl9ZmsIji7U
So, there is hope..
Click to expand...
Click to collapse
That's my video. Although its still there it is nowhere near as bad as my previous notes.
Sent from my Cube U30GT-H using xda premium
baz77 said:
lol pixelation in dark areas is that black crush, or not being able to read a specific number because screen brightness/contrast/gamma is low?
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
It is crush or clipping. The settings of the screen are set by Sammy to pull all values to zero after a certain threshold like 4 in that pic. They do this because they think it improves contrast. It is stupid, and even more stupid on an OLED screen that has good black levels anyway. It is not the "screen" as in hardware, it is the way the low level drivers are set.
The right way to do it is to ramp down smoothly to zero with zero the only level that shows nothing at all (pure black).

Nexus 7 causes eye strain :(

Hello, I own N7 3G version and I have very annoying problem. My eyes hurt when I read texts. They look little bit blurry and the white is too saturated. I noticed that the greens and yellows are very pale compared to my LG OPTIMUS Black that uses LCD too..Is it me or my device has bad display?
Try screen filter?
Sent from my Nexus 7 using xda app-developers app
ClintvL said:
Try screen filter?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
I used to use screen filter, but I ended up shelling out for Lux Auto Brightness. It's just so much easier to use. I thought Screen Filter was a hassle and it needs to be disabled in order to sideload apps because it won't allow you to click the install button if it's enabled.
Kraize said:
I used to use screen filter, but I ended up shelling out for Lux Auto Brightness. It's just so much easier to use. I thought Screen Filter was a hassle and it needs to be disabled in order to sideload apps because it won't allow you to click the install button if it's enabled.
Click to expand...
Click to collapse
Lux does that too, but it's smart enough to disable itself for that short time you're installing.
If the text you are talking about are web pages, you might consider getting the (stock Android) Browser.apk out of a AOKP build that matches your ROM base (4.1 vs. 4.2) and installing that in addition to Chrome (if for instance you are using a near-stock ROM).
The one thing that was an immediate disappointment to me for the N7 right out of the box was with the Chrome browser's lack of text reflow when zooming.
The Stock Android browser does text reflow nicely, so there's less eyestrain looking at larger text. Nicer bookmarks than Chrome IMO, too.
It does seem a little more prone to crashing than Chrome - but I use it anytime I want to read web pages where zoom+reflow makes the reading easier.
cheers
kopchev said:
Hello, I own N7 3G version and I have very annoying problem. My eyes hurt when I read texts. They look little bit blurry and the white is too saturated. I noticed that the greens and yellows are very pale compared to my LG OPTIMUS Black that uses LCD too..Is it me or my device has bad display?
Click to expand...
Click to collapse
Silly question but have you thought about going to the optician? Maybe you have bad eyes and need corrective glasses.
From my Nexus 7
I'm short-sighted - that means I see close objects fine opposed to distant objects. I'm corrected with glasses Anyway. I don't have such issues with ipads, xoom despite the bad PPI of the latter. The color reproduction is wrong with nexus, especially the black fonts on white background - they look too grayish and blurred and kinda blend with the oversaturated white background. Interestingly reds and blues look fine on white background; the same is valid also for the white texts on black background. Not to mention the device has very weak greens and yellows even compared to many mediocre LCDs. No ASUS again
kopchev said:
Hello, I own N7 3G version and I have very annoying problem. My eyes hurt when I read texts. They look little bit blurry and the white is too saturated. I noticed that the greens and yellows are very pale compared to my LG OPTIMUS Black that uses LCD too..Is it me or my device has bad display?
Click to expand...
Click to collapse
To answer your question. I've used my N7 heavily....hours and hours every day, for all kinds of tasks, and have never experienced what you describe. Each person is different, it sounds to me maybe you're sensitive to something on the device that few others are...maybe its the high PPI? Go try an iPad Mini
Sent from my Nexus 7 using Tapatalk HD
I think it is the scrolling, wat makes my eyes hurt. The tekst is building up in a way that I have to focus again and again. The xda app is a example of it.
I get big eye strain using the N7, especially at night !! But only one white pages. This aint just the tab though, I get it from my computer screen also.
Is it normal to be getting eye ache and headaches from whites onscreen?
I ended up getting a browser (Maxthon) with nightmode for my tab, but doesn't help for the PC.
Any ideas how to cause less strain to myself? My brightness is low etc.
Wilks3y said:
I get big eye strain using the N7, especially at night !! But only one white pages. This aint just the tab though, I get it from my computer screen also.
Is it normal to be getting eye ache and headaches from whites onscreen?
I ended up getting a browser (Maxthon) with nightmode for my tab, but doesn't help for the PC.
Any ideas how to cause less strain to myself? My brightness is low etc.
Click to expand...
Click to collapse
for your computer download and install F.lux - at night your eyes will thank you. it takes ~15-30 minutes for your eyes to get adjusted to the color shift. If you really want to see the difference it makes after using it for 2-3 hours at night, disable it and see the results for yourself.
Anyone know a good flux alternative for android? I would assume if they have a jailbroken app for ios they should have had a android .apk.

[Q] Color (black) scale on GT-N7000

Hey there,
I just bought a GT-N7000, and I am quite dissapointed with the display quality. I have a lot of experience with Super AMOLED (plus) screens from Galaxy S and SII, but I am facing an issue on my new Galaxy Note.
You can see it on dark pictures, photos or mainly videos. It looks like the screen on the Note were more sensitive of brighter tones of black then the screens on S or SII. Let's say I am watching a video. If the scene is full of light, everything is all right and you can definitely see the breathtaking quality of the Super AMOLED screen. But when the scene goes dark - everything got different. On the S or SII, all the dark led pixels were inactive, so the screen was absolutely black on dark places. But, it looks like my new Note is a lot more sensitive of light, and the result is, it finds a not-absolute-black places all over the screen, and the scene is not Black at all. There is around 50% of the screen's area which is not Black, but just dark grey, consiting of small squares. Also, these squares flicker in a very high frequency, which makes it even more annoying. This is also happening with photos taken in dark, but, of course, the squares are stable.
Are you facing this issue too or am I the only one? I hope you did understand my words, if not, I could provide some photo samples of what I'm talking of.
This is called black crush and present on all Note 1s to varying degrees. Samsung refused to acknowledge it as an issue.
Sent from my GT-N7000 using XDA Premium 4 mobile app
which rom are you on?
On the newer jb ones for me its fastly improved.
Sent from my GT-N7000 using Tapatalk 2
Search for the thread in the n7000 forums with 'black clipping' in the title If you don't find it as black crusg. Lots of good reading there. You will find all the info you desire in this topic.
Sent from my Samsung Galaxy SVII using Tapatalk 6 Beta on a dual boot system running fully featured Ubuntu touch and Firefox OS

Categories

Resources