yashsingh1/xdaforums huggingface dataset:
[Galaxy Note GT-N7000 General] voxano:
Rocket ROM v23 didn't improve the banding for me: it's still present on a black lock screen and no improvement in video playback either. It's odd since it's based on LC1 and both of these issues are gone or significantly improved on the stock LC1 ROM. Black clipping remains a problem on both stock and Rocket.
[Galaxy Note GT-N7000 General] jermitano:
hmm a lot peeps asked the same thing in the thread...personally in lc1 i saw improvements on my unit (video playback on hd and mkv) and reduced blocking significantly (stock and kingdroid)...guess it really is phone to phone basis...anyways no sight of the screen tuner yet probably with supercurio busy with other matters i guess :)
[Galaxy Note GT-N7000 General] voxano:
Well, I think the banding is affected by the color tint as well, i.e. it may still persist even after a fix if the phone has significant color tint... BUT! The stock LC1 improved things on THE SAME PHONE, and the Rocket ROM didn't.

I also tried KingDroid ROM, the LC1 based v.7, and although it improved the banding during video playback, it didn't help the color banding on a black lock screen much.

So I think that, at the moment, the stock kernel in the stock LC1 deals with these issues better than the latest custom kernels used in Rocket and KingDroid.
[Galaxy Note GT-N7000 General] jermitano:
oh yeah i had the banding on a black screen on kingdroid before but by removing the shadow glass check in jkay deluxe it was gone...
[Galaxy Note GT-N7000 General] jkc120:
Anyone? Is this the same issue (one of them) as you all are seeing on the Note? I just want to know if I should continue to follow this thread and/or contribute (if I can). :)

Thanks!
[Galaxy Note GT-N7000 General] voxano:
Shadow glass check only adds or removes a "shadow" on my phone with kingDroid, but doesn't improve the banding :-(
[Galaxy Note GT-N7000 General] jermitano:
oh yeah and uncheck transparent background too.works for me i guess
[Galaxy Note GT-N7000 General] voxano:
I have it unchecked already... thanks for all the suggestions, though.
[Galaxy Note GT-N7000 General] voxano:
Setting Warm or Cold in mDNI Switcher resolved it. With that no banding on a black lock screen and banding in the movies improved a lot on the v7 KingDroid ROM.
[Galaxy Note GT-N7000 General] jermitano:
yeah forgot about that...good it works
[Galaxy Note GT-N7000 General] Rezz:
Is there any progress on this issue?, any indication that ICS will fix it?

I bought my note mainly for watching videos and showing images to clients, but the quality is truly horrible, every dark scene or gradient is a blocky mess, not to mention the black clipping issues.....i couldn't be more disappointed with my device :(

However I compared it to my brother in law's note and his seem to handle black values much better, still not perfect though.

Mine is on the left and is basically an gray to blueish blob, his on the right still has banding, but the blacks are more like they're supposed to be, is my screen faulty or is he just one of the lucky ones with a decent screen?
[Galaxy Note GT-N7000 General] badmonopoly:
Is it a scaling issue b/c the screen is so large (the apps aren't meant for this size)?

It doesn't happen on anything for me except low quality color transitions in apps that were definitely made for smaller screens.

I had to start looking for the problem LOL. I am on ICS, though.
[Galaxy Note GT-N7000 General] Reynaldinho111:
He just got lucky. Everyone has screen issues in one form or another. What freaks me out is some people see the issues more than others. This leads me to believe its a hardware issue and Samsung's consistency is poor, as opposed to a software issue that can be fixed. I hope I'm wrong :)
[Galaxy Note GT-N7000 General] ages_devil:
I tried 3 different GNs and the 3 have it, one of my friends is selling his note because of this problem, imo it is a HW problem but can be decreased to a certain level using SW(after updating to LA1 the black is a little bit better than the old FW)

it's a shame to see such a premium device with this kind of problem:(
[Galaxy Note GT-N7000 General] EarlZ:
The shots above are similar to both my first note and replacement screen, my first one was the one on the right side, it had minimal black clipping but still noticeable enough to be annoying, replacement screen looked like the on one the left and it had a whole different level of black clipping + color banding and other visual glitches.
[Galaxy Note GT-N7000 General] M3TALLICA:
Anyone of you tried anti banding zip from rocket rom thread?

There used to be greyish tint on screen with screen filter on, it is still there but hardly noticeable.
[Galaxy Note GT-N7000 General] MR.change:
About that ,is it usable on any Rom ,i.e my stock 2.3.6 Rom?

and I just traded my perfect screen SGS2 for this :(
[Galaxy Note GT-N7000 General] M3TALLICA:
It works only on deodex.

I'm not sure about firmware version but might work on firmwares other than lc1

Back up before you play with it. :)
[Galaxy Note GT-N7000 General] celtichazard:
Hi have booth notes the withe versión and black but my withe note displays more brillant for example on the settings menu the withe letters are incredibly brillant but on my black note is like some gray filter on the screen my screen is not too bright to compete with the withe note is any secret code to modify the max brightens oon the screen or even trow some app?

Or maybe is a hw failure?

Other example is like you are watching videos you need turn on the external visibility to compete with the withe versión note to make same brightness level on my black note
[Galaxy Note GT-N7000 General] liutszho:
Tried rocket rom, black clipping still there
[Galaxy Note GT-N7000 General] a3plew:
The att note recently got a ics leak. The banding issues seem to be fixed as can be seen on the xda app splash screen. They changed something so with the test image with the numbers it is a un smooth trasition from about number 7. With gingerbread you could see all the numbers. so they are changing something. It seems to create a new problem with the greys though ;). But it's something that I will be temporarily happy with until this is hopefully resolved.
[Galaxy Note GT-N7000 General] EdgaBimbam:
what about iron man 2 trailer? there is black color clipping? ;D
[Galaxy Note GT-N7000 General] iffamies:
If my Note has these color isses etc. Can I ask warranty repair to replace the screen to "fix" it?
[Galaxy Note GT-N7000 General] btyork:
Ha! No.
[Galaxy Note GT-N7000 General] EdgaBimbam:
i got refund because of black color clipping, so dont say no ^^
[Galaxy Note GT-N7000 General] knightnz:
He asked if it can be repaired, not if he could return it for a refund.
[Galaxy Note GT-N7000 General] PaulF8080:
I registered to relate a couple of stories that sound like this problem.

I worked for a company that made large alpha-numeric displays using character arrays build of a 5x7 array of incandescent bulbs. To save money on ascii to 5x7 encoders we would turn on 1 out 8 characters at time with 8 times the power. The filaments in the bulbs would average the power.

Fast forward to the invention of LEDs. The above method did not work because even though the average power was the same the LEDs switched so fast the human eye would perceive the peak power. We had to crank the peak power down.

Fast forward again and I was looking at the gamma test and I said maybe my eyes are seeing the peak power making most of the bars perceived as bright. The interesting thing, that kind of confirms this, is that when I look at the gamma test on my Note using the camera on Captivate in a dark room the bars are not all bright. They are graduated. I am guessing in low light the Captivate's sensor "shutter" is open longer than the Note refresh rate to average the power. I am also guessing the lower bits of the color pallet modulate the power pulse width(PWM) and the peak is set by the upper bits.

That's my story and I am sticking to it. Incidentally not all eyes are the same. I know of at least one person could not look at our LED displays because they strobed(especially under florescent lights).
[Galaxy Note GT-N7000 General] duowing:
One interesting thing I noticed was with the two Notes side by side on the previous page how one seems to be more blobbed, where the other is more defined, but has worse banding. If you look at the one that has more definition the display itself looks brighter vs. the more blobbed one is dimmer. I was able to go into a dark room and get both results. By adjusting brightness a lot higher I was able to get pretty much the right image, then by lower brightness or going back to auto I was seeing the left image. So in my mind part of the reason people are seeing such different results also depends on the screen brightness. Similar to the crosshatch/linen pattern or whatever you want to call it. When lower brightness that background becomes more apparent, but at high brightness it seems to disappear.
[Galaxy Note GT-N7000 General] Rezz:
I set both devices on the same brightness and color mode, so thats not it.

The main difference is that the right one shows better blacks, where mine, the one on the left, is more grey, so the gradient seems more smooth when in fact its just washed out.

This is because that when the pixels are lit, the darkest color it shows is grey instead of near black.

I really hope this will be fixed soon, because I love everything else about my note and I'd hate to go back to a smaller screen.
[Galaxy Note GT-N7000 General] celtichazard:
I have the same problem my withe note displays more brightness, the other display like you say is lke a Grey filter on the screen or something but the brigness is not at max
[Galaxy Note GT-N7000 General] CONTACTMC:
My note next to my wifes galaxy s 2, you can clearly see the gamma problem in this pic, I have contacted Samsung, awaiting reply.
[Galaxy Note GT-N7000 General] Rezz:
At least yours goes to 4, mine starts displaying grey at 2 :P
[Galaxy Note GT-N7000 General] M3TALLICA:
Somebody please upload the image in above pic thanks.
[Galaxy Note GT-N7000 General] maxld:
http://imageshack.us/photo/my-images/690/gammatest.png/
[Galaxy Note GT-N7000 General] PaulF8080:
Beware, only my second post.

I have the same problem, but am not sure if it is THE problem. My total wild guess from previous hardware design experience is that what I am "seeing" is a Persistence of Vision(POV) problem.

My guess is the voltage levels look like this:

L 0 _____________________________

L 1 __--_____________________--___

L 2 __----___________________----_

L 2 emits more light than L 1 because it's pulses are wider. Unfortunately your eyes do not work that way. They persistently remember the peak brightness for 1/25 sec no matter how wide the pulse. So level 1 and 2 are "seen" as the same brightness. If your eyes are deceiving you, how do you know this is happening? You look at the Note screen using a camera in dark room. Cameras average the total light. I guess I am saying that it may a hardware limitation were digital analog converters that adjust the height of the above pulses may not have enough bits to handle all 24+ bits so the designers may have resorted to pulse width modulation(PWM). A bug for sure. I have been there.
[Galaxy Note GT-N7000 General] pboesboes:
Have you tried opening the pic in the gallery? Mine looks like that in the ICS browser but is perfect in the gallery.
[Galaxy Note GT-N7000 General] Rezz:
Mine shows like that in gallery, but in quickpic I can see all the way to 1.

Nontheless, we shouldnt be able to start seeing greys up untill 10 or so, so its all crap.
[Galaxy Note GT-N7000 General] CONTACTMC:
I contacted Samsung and was advised that my screen is faulty, I have sent it back and am awaiting a replacement, will let you know how the new one looks.
[Galaxy Note GT-N7000 General] letters_to_cleo:
so far there are really no perfect screens still out there.. no matter how many times your going to exchange screens, the screen you have would tantamount itself to have issues still. Just like a panel lottery, some replacement screens have better color rendition over the other, in expense of another faulty thing again that you might notice later on, when you examine it closely....

just my take
[Galaxy Note GT-N7000 General] CONTACTMC:
Yeah but for £450 we should not accept poor quality. They advertise it as being a great screen for watching movies etc, and thats what I expect for my hard earned ££££, we all should.
[Galaxy Note GT-N7000 General] letters_to_cleo:
well, Good luck bud.

I have a friend who has replace his Note's screen 5x already but still end up with some issues on his latest one. Samsung's QA checkers really goofed up when they released the Note sometime before (don't know about the new batches though, I just cross my fingers that they don't exhibit the same screen issues on their predecessors.)

Just don't let your high expectation (in getting a perfect screen), get the better of you. My friend learn that in the hard way... It ended up him, just getting a final refund and sworn never to buy another Samsung product again, never he would say....

Just my take.
[Galaxy Note GT-N7000 General] CONTACTMC:
I have to at least try. Also I had a look at my cousins Note this morning, and its perfect, correct grey scale, no blocky effect on pictures and vids, so decent ones do exist, I guess its just a lottery as to who gets one....not good!
[Galaxy Note GT-N7000 General] needachange:
Well I have recently installed ICS Stunner rom beta 4.3 http://xdaforums.com/showthread.php?p=24820321&posted=1#post24820321

All I can say is that the situation is a hell lot better now. In my stock rom, I was experiencing this issue on almost every video but now I really have to look for it. Stock apps dont also show banding now. For me, this rom did the trick. I'm not extremely annoyed anymore. U guys can try it out too.
[Galaxy Note GT-N7000 General] jkc120:
http://xdaforums.com/showpost.php?p=24819186&postcount=517

:)
[Galaxy Note GT-N7000 General] supercurio:
one comment: wrong approach. (and I know that because based on my 1-year old crappiest hack)
[Galaxy Note GT-N7000 General] jkc120:
Well it's the ONLY thing that works on the Galaxy Nexus right now. So I'll take it. ;)
[Galaxy Note GT-N7000 General] yiannisthegreek:
I believe you mean on the Note?
[Galaxy Note GT-N7000 General] jkc120:
No I meant the Nexus. It has the same gamma/black clipping/color banding issues. But I can fix them with the help of gamma control and color control now. :)

---------- Post added at 04:28 PM ---------- Previous post was at 03:54 PM ----------

I take it back, you're absolutely right. I can make the color banding in blacks disappear, but at the expense of lighter colors then showing banding type effects similar to what I saw in the blacks with the default gamma.

If you don't mind my asking, what IS the right approach? And is it possible in software alone?
[Galaxy Note GT-N7000 General] supercurio:
Its what I described in several previous posts in this thread and that I'm working on ATM.
[Galaxy Note GT-N7000 General] jkc120:
Ok, I guess I can go back and read 67 pages to find it :) I hope your work is portable to the Nexus. I know quite a few people who would gladly pay for a robust solution on the Galaxy Nexus, one of them being me. I am close to just buying a 7" tablet to view videos on, though I'd prefer to watch on my Nexus. So instead of throwing $300 into a tablet, I'd gladly throw money your way and be able to use my phone :) Not $300 :p But not insubstantial either!

Anyway, sorry to derail the thread. Keep up the good work!
[Galaxy Note GT-N7000 General] supercurio:
Code is mostly not portable between Galaxy Nexus and Galaxy Note as both have entirely different SAMOLED drivers, one written by Google and another rewritten from scratch for this Generation by Samsung.

Panel is about the same tho.

I'll be able to use concepts on Note and Galaxy Nexus, but to get valid results (and not just trying to mask an issue by introducing bigger ones via uninspired modifications) its quite complex.
[Galaxy Note GT-N7000 General] CONTACTMC:
Many thanks for working on this Supercurio, and for recognizing the problem, I am getting fed up of hearing people saying "it aint that bad" or "its down to the source material" which is rubbish imo.

And I hope your solution will work for non rooted users as well, if not I will probably root, but would prefer to keep my warranty on this one.

Anyway, my replacement is due tomorrow, if its the same as my first one you will be my only hope!
[Galaxy Note GT-N7000 General] supercurio:
Well, it seems most people don't get that there's not a single identical device and think they are right because they assume the opposite, or try to translate concepts from other techs that are totally off topic for Super AMOLED.

So yes, I don't expect anyone agreeing in general, but even less on this topic:p
[Galaxy Note GT-N7000 General] aalupatti:
I could be wrong but banding issue seems to be almost nil in the new releases and even in ICS too..
[Galaxy Note GT-N7000 General] supercurio:
Yes, insane banding due to 16bit mode is not present anymore.
[Galaxy Note GT-N7000 General] TempusFudgeIt:
Hey Supercurio - good to see you still around and working on the problem. Do you have any news on when you will release your display fix?
[Galaxy Note GT-N7000 General] supercurio:
It requires ICS, so you can ask Samsung when they'll release a stable ICS ;)
[Galaxy Note GT-N7000 General] Techimplant:
I have been using the Stunner n now CM9 but the color banding ain't going nowhere..its still there..I wonder if its a hardware issue altogether n not a software one..what if our screens r designed in that messed up way only..don't know :confused:

But I notice the banding more in YouTube videos n stuff..in my Mx player I have changed my color depth to 32 bits from 16 n its perfect..

Sorry..just checked again..the color banding is still very very much there in Mx player as well..:(:mad:

Sent from my Galaxy Note with Blazing CM9
[Galaxy Note GT-N7000 General] MR.change:
Thanks for being such a hard working dev SC +1 ,please give us that alternative payment Way to buy your apps ,since neither google play nor paypal accept purchases from my country , this is the only way I can get your essential apps.

But anyway ,let's get to business

I don't know if this had been mentioned but I want to report that the newer batches of Notes still have the same display problems mentioned here.

My note's FW reads January 2012 (bought it around February) and it's the stock FW that came preloaded on it.

let me know if I can help you in any way.

cheers.
[Galaxy Note GT-N7000 General] paleh0rse:
Sadly, the vast majority of brand spankin' new AT&T i717 Notes have the exact same display problems as well. :(
[Galaxy Note GT-N7000 General] MR.change:
yeah it's sad that Samsung has poor QA control , and I thought that the SGSII had poor quality control with the yellow tint and all !!

But....luckily most of their issues are software related, for example my SGS2 had an extremely obvious and annoying yellow tint to the left side of the screen when I first got it ,a tint that was 100% removed via a firmware update.

Here is hoping the same will happen here as well....
[Galaxy Note GT-N7000 General] RudiRulez:
can someone do me a favour and get a clear photo of the problem, and a link to the video and time of which its occuring in the photo, ive watch many video's from that slimness one to the MIB 3 trailer and can't for the life of me see what the issue is :/
[Galaxy Note GT-N7000 General] honf:
:eek:

Excellent news. Now we wait for Sammy :)
[Galaxy Note GT-N7000 General] DaRkMyk:
Whew.. My Note seems fine. 1-3 is Black, 4 is a very very faint gray and barely visible. and it gradually increases up to 21.
[Galaxy Note GT-N7000 General] paleh0rse:
Viewing the gamma test image in a dark room is all you will ever need to do to properly identify and measure the problem. If the transitions from 21 down to 0 are ALL smooth and gradual, you're fine. If inatead you see it suddenly jump from grey to deep black somewhere between 10 and 0, you're phone has the problem and you'll likely see the issue pop up in dark HD videos, photos, or graphics.

Its that simple.
[Galaxy Note GT-N7000 General] sharp2G:
no that's the problem LOOL! It's suppose to be ALL black if you have a good screen. Everyone's note goes up to 4.
[Galaxy Note GT-N7000 General] CuraeL:
Yup, 4 is good. 3, 2,1 are merged into pure black. Jeez. Meh. I had the SGS2, with yellow tint.. And the GNex with less than pure black, black. And now this. I looove the colors on these devices, but I'm slowly losing my patience. :O Since the screen.. Is what I look at. Major issue, yaay. Samsung :*

___________

Sent from my Galaxy Note GT-7000, 2.3.6.

JKay setting, uninstalled TWLauncher. Customized stock.

Fast AND sexy as lightning.

Waiting to KANG it up with stable build.
[Galaxy Note GT-N7000 General] EarlZ:
A lot of people say the black clipping, color banding, and other hardware screen related defects are all "extremely minor issues", Im not sure how they classified that since Im looking at the screen 100% of the time, so its a major issue for affected phones. Hoping for the best with the new SuperAMOLED production line samsung is gonna use soon!
[Galaxy Note GT-N7000 General] neokv:
Cant wait for ics for slove this screen issues

come on samsung !!

Cant wait for note become best phone ever
[Galaxy Note GT-N7000 General] supercurio:
Great I just ported Voodoo Display Expert on Galaxy Note mDNIe implementation :)

https://twitter.com/#!/supercurio/status/191914241383600128
[Galaxy Note GT-N7000 General] EdgaBimbam:
i dont understand is it good or not, but nice job mate :D
[Galaxy Note GT-N7000 General] jermitano:
now here it goes...would this be implemented as an app?ive seen progess on leaked ics roms as well...fine tuning does alleviate the issue
[Galaxy Note GT-N7000 General] myself11:
Not trying to go off-topic, but I've just went from stock GB to ICS custom ROM and I notice more "noise" on image, as if pixels were more visible. Do you guys notice that too?
[Galaxy Note GT-N7000 General] Techimplant:
I went to samsung for black clipping issue..n they said its a feature of superamoled n not defect n refused to do anything..they even gave me this in writing..
[Galaxy Note GT-N7000 General] Rezz:
I'm currently speaking to samsung via facebook, they told me to make some pictures of my note displaying a test pattern.

Of course the test pattern doesn't show the problem correctly, it has blocks of different values starting at 0 to 255 with steps of 8....while the clipping problem mostly occurs in the lower blacks, say 0 to 4.

I showed them the problem with gradients and movies,but they seem to be ignoring those examples....
[Galaxy Note GT-N7000 General] EdgaBimbam:
lol, so why other superamoled dont have this issue, for example s2? crapzor samsung ^^ but i got refund for my black note 2 months ago without problem. So maybe it depends where do you live ;D
[Galaxy Note GT-N7000 General] JolyonS:
Just to add to the available info - my Note seems to clip to black between 4 and 3 on that chart; there's a notable gradient 4 through to 6 then I honestly can't tell if there's a grade up to 10 or if 9 is the same as 6 and there's a small jump to 10.

10 to 11 is another jump and then it all looks pretty same-ish up to 20.

Don't have anything to take a (decent) photo of the screen on.

I'll need to watch some videos to see how bad it in in real-world use.

GT-N7000 Kernel:2.6.35.7-N7000XXLA6-CL907341
[Galaxy Note GT-N7000 General] Techimplant:
Ya it is..in India u cant get a refund even for a pencil..n btw mine is black too..do u have a White one now?..n is it perfect?
[Galaxy Note GT-N7000 General] EdgaBimbam:
yes i have white one, hmmm still black color clipping but it looks better then my old one black note.
[Galaxy Note GT-N7000 General] M3TALLICA:
Hi there!

Today for the first time I did screen test in pitch black room.

I see darker spots on black screen. Is that something I should worry about ?
[Galaxy Note GT-N7000 General] EdgaBimbam:
nah it's fine, every amoled screen has it.