yashsingh1/xdaforums huggingface dataset:
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ariboi:
What EarlZ meant is that no matter how ever small the market is, this phone was marketed on the super amoled HD screen quality (can't believe I fell for that)... it has nothing to do with the size of the market... just the USP of the product...

I agree with your point EarlZ... How could a device of such high value go through QC without being held back.... the blacks definitely arnt as black as they were/are on other galaxy amoled devices... dunno if software update could fix that... or even the horizontal lines issue...

---------- Post added at 11:33 PM ---------- Previous post was at 11:24 PM ----------

It seems as if there is 0 consistency with the manufacturing... :mad:

Wouldn't store demo units be better than the packed ones? after all, the demo units does the convincing job for the company?:confused:
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
I think the demo units are just pulled off from the retail chain.

On the side note though they had a new Galaxy S2 demo unit and I was really impressed by the screen, it still came with some ancient firmware but absolutely no yellow tinting what so ever, even the grey rendering is LCD like, perfect no grains no lines totally solid.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] 3sade:
Good news guys! Supercurio just bought a Galaxy Note and is working on bad screen calibration issues, see my twitter @FoOtY1337
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Previous tweet was to short to be clear:

I started working on the Note (mDNIe sharpness filter) but not on calibration issues; Pentile fuzzyness bothers me.

I don't know yet if I'll keep the device, after a few days of usage it feels wrong in my small hands, I'm not convinced.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] fujimamatsu:
So did he mention the horizontal line issue could be fixed? It is what I really care about :(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
That's an hardware issue.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] fujimamatsu:
Thanks supercurio. If that's hardware issue, I will forgive this phone coz I really can't accept such bad quality of screen on such expensive phone... Really disappointed... :(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Note: I read the display/color driver code already, even if I didn't started working on it.

The color profiling management is very different from previous Samsung Super AMOLED devices, inspired by Nexus S driver design which is mostly right but ended up with disastrous visual result because of inadequate configuration.

I could recognize the same signature, targeting sRGB response curve instead of a simple gamma 2.2 curve.

As Super AMOLED display's black point is almost zero and sRGB count ambient light as black point, it just cannot work: as you noticed, shadows are too bright until it you suddenly reach black, and the transition between both is abrupt.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
The Gamma on the Note is close to 1 where is should be close to the 2.2 standard value. 2.5 could be accpetable, but 1 is not.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] 3sade:
Thanks for clearing this up mate, will it cost much time to make a better calibration for this phone and will you be doing it regarding of you not beeing sure keeping the device? :)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Measurements please.

Gamma 1 seems not possible to me, unless your sample is totally off-specs.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ariboi:
This is awesome news! :) I hope he can work around the issues!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
I have used this page as a reference to figure out the Note screen gamma and it's more close to 1 than the standard 2.2 curve.

On the RVBW@48% I see values close to 1.2 1.4

On the green and greys@10% I see something close to 1.7 1.8 but I could be wrong or mistaken ;)

EDIT: A mobile version is also available with a quite nice gamma test too.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Yes it will cost a huge amount of time.

My device is lcdtype=3 so... If there are 2 other screen variants or maybe even more, it means that even if I manage to do something for mine it might be helpless for other screens.

One last point: as the init sequence configure the gamma points for a sRGB-simulated response curve it might be impossible to get a great result (only less bad) even after a lot of work.

Galaxy Note becomes popular but its still a tiny fraction compared to other devices like Galaxy S II. It means I might work on it during months and never even cover the initial purchase price with hypothetical app sales.

So, now you know: it doesn't look good.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Im a sad panda...

I dont even expect Samsung to fix or recognize this issue.

How do we get that lcdtype= 3 ?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
Confirm. I see values close to 1.2 on 48%
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Ok it explains a lot :P

You just cannot measure Gamma with your eyes.

A few very experienced people can guess and draw the response curve thanks to their training, but pages like that are totally inaccurate.

Its also based on the assumption the response curve is a consistent gamma curve and its almost never the case with uncalibrated digital screens, and thats also not thru case at all with Note screen. Actually this is the main issue.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
How check my lcd type ?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
It kinda makes me think twice in getting another device that markets the screen as its best feature, still I love my G-Note but it might be the last product I buy for the screen.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
As root:

cat /proc/cmdline

I'll soon integrate the detection in Voodoo Screen Tuning.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
I see.. So if Samsung is not comming soon with a better gamma table for the Note's super amoled screen we are f**ked!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Oh and an aditionnal note: a pattern like this one doesn't work anymore if scaled and will work even less on a Pentile screen, due to the interpolation (and sharpening) involved.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gjunki:
I dont have these issues at all. Replace phone
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Samsung won't change the color rendering of existing devices.

They might come up with a new screen revison (hardware) associated with another profile - better or worse but thats pretty much all I guess.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Basically this is a failed HD SAMOLED device?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
Right. think I got your point. I guess is the same to correct the screen color temperature/hue (greenish on my note)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
is your file /proc/cmdline contein record - lcdtype=3 ?????
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
# cat /proc/cmdline
cat /proc/cmdline
loglevel=4 console=ram sec_debug.enable=0 sec_debug.enable_user=0 c1_watchdog.sec_pet=5 sec_log=0x100000@0x5ea00000 s3cfb.bootloaderfb=0x5ec00000 [b]lcdtype=3[/b] consoleblank=0 lpj=3981312 vmalloc=144m
#

Same lcdtype=3 on my phone.

I also have that kind of report with dmesg

# dmesg | grep -i gamma
dmesg | grep -i gamma
[ 3908.210318] lcd lcd: brightness=69, gamma=99
[ 3960.239786] lcd lcd: brightness=64, gamma=89
[ 3960.323123] lcd lcd: brightness=52, gamma=79
[ 3960.356319] lcd lcd: brightness=48, gamma=69
[ 3960.396108] lcd lcd: brightness=43, gamma=59
[ 3960.448794] lcd lcd: brightness=38, gamma=49
[ 3960.500706] lcd lcd: brightness=34, gamma=39
[ 3960.533338] lcd lcd: brightness=29, gamma=29
#
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
Why battery icon on start charging looks normal and after loading some drivers or setting it look in wrong gamma/

Possible we can change some init setting or turn it of ? but what and where
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] george66gr:
..do you think that this abrupt transition can be fixed? ..is it a software issue or a hardware (display) constraint?

(I would really like this problem to be solved... it is very noticeable everywhere where dark scenes involved, in videos and viewing picture.. You are trying to enjoy a fullHD movie and your eye constantly bumps on that problem..)

Thanks
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
What terminal app are you guys using, mine only shows upto

loglevel=4 console=ram sec_debug.enable=0 sec_debug.enable_user=0 c1_watchdog.sm
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
Win 7 console :)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
lcdtype=3 and

741.732447] lcd lcd: brightness=222, gamma=259

741.782062] lcd lcd: brightness=210, gamma=239

741.831561] lcd lcd: brightness=198, gamma=229

741.885060] lcd lcd: brightness=187, gamma=219

741.919071] lcd lcd: brightness=175, gamma=209

741.955431] lcd lcd: brightness=163, gamma=199

742.008420] lcd lcd: brightness=152, gamma=179

742.059672] lcd lcd: brightness=140, gamma=169

742.093372] lcd lcd: brightness=128, gamma=159

742.109833] lcd lcd: brightness=117, gamma=149

742.144606] lcd lcd: brightness=105, gamma=139

742.162017] lcd lcd: brightness=93, gamma=119

742.198784] lcd lcd: brightness=81, gamma=109

742.215302] lcd lcd: brightness=70, gamma=99

742.232237] lcd lcd: brightness=58, gamma=89

742.249418] lcd lcd: brightness=46, gamma=69

742.284902] lcd lcd: brightness=35, gamma=49

742.301904] lcd lcd: brightness=23, gamma=29

743.654765] lcd lcd: brightness=234, gamma=269
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Can you walk me through what to do, im not familar with the adb console via windows.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
type adb.exe

shell

su

cat proc/cmdline
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
Right click in window name, select properties, adjust # of columns to a high value like 200+. you can also set a smaller font. you're good to go.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Always as superuser, you can also:

cat /proc/cmdline > /sdcard/cmdline.txt

And read the text file later.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
loglevel=4 console=ram sec_debug.enable=0 sec_debug.enable_user=0 c1_watchdog.sec_pet=5 sec_log=0x100000@0x5ea00000 s3cfb.bootloaderfb=0x5ec00000 lcdtype=3 consoleblank=0 lpj=3981312 vmalloc=144m

LCDtype= 3
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
hoo just for reporting it:

I tried to read the gamma_table in /sys/class/lcd/lcd

doing a cat onto gamma_table gives.... a phone reboot :/

but

# cat /sys/devices/platform/s5p-dsim.0/gamma
cat /sys/devices/platform/s5p-dsim.0/gamma
=============== default gamma ===============
0x69, 0x5a, 0x6c, 0xa1, 0xb7, 0x9d,
0xab, 0xb6, 0xaf, 0xb8, 0xc1, 0xb9,
0x8e, 0x96, 0x8b, 0xa6, 0xac, 0xa4,
0x00, 0xd2, 0x00, 0xd3, 0x00, 0xf1,
#
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
guys i'am just flash now N7000ZSKK1_N7000OZSKK1_TGY and gamma little better (+10% :)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
What was your firmware before?

Maybe a combined effort of emailing samsung might have a chance to get this fixed?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
N7000XXKK9_N7000OXAKK9_N7000XXKK5

really little progress .... i can see it on galactic wallpaper (standart in android live wallpapers) on background stars - lettle better but not really well

and ....... wait i post some picture..........
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Isnt KK1 and older firmware?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
http://s1.ipicture.ru/uploads/20111211/60VjM5Fb.jpg - when installing some apk - bar has is little another gradient

---------- Post added at 06:57 PM ---------- Previous post was at 06:55 PM ----------

all firmware from - http://www.sammobile.com/forum/showthread.php?t=27
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Only the lcdtype (read by bootloader then passed to the Linux kernel driver by cmdline) is interesting to me.

dmesg log content provides no valuable information. (it just tell you change of brightness level)

Later, I'll mabe ask you to share the MTP values in driver: which is the factory and maybe self-calibration data read directly from screen hardware.

From my Nexus S experience, those calibration data are sometimes off, or even totally off-charts and then introduce color issues more than they help solving them.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
I posted about that green banding a few days ago, nobody seemed to care or saw it.

DXKK1 is also the stock firmware on my phone, didnt notice any diff from KK1 and KK9 in terms of gamma level.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
That is a firmware issue: default rendering set to 16bit without dithering, molesting a few gradient in the process. (XDA app splash screen anyone?)

Hopefully fixed by ICS, where hardware acceleration will make the UI smooth without resorting to bit depth tricks.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
yea !!! and battery in charging mode look little better. looks like gamma -10%

---------- Post added at 07:11 PM ---------- Previous post was at 07:09 PM ----------

default rendering set to 16bit without dithering - and pictures and games and video all will be in 16 bit ? or just interface ?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
I'll verify but it seems to me 32 bit surfaces are displayed correctly.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
http://s2.ipicture.ru/uploads/20111211/Wmthw7Pw.jpg - xda dev splash screen - Terrable :eek::eek::eek::eek:

---------- Post added at 07:21 PM ---------- Previous post was at 07:17 PM ----------

he he not 16 bit - its 8bit color = 256 colors total :eek:
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
Yep it has been posted already. Better results with a screenshot tho ;)

The rendering is a bit better with the premium app.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
Just Look at this guys - http://s2.ipicture.ru/uploads/20111211/7VVYJ9M5.jpg
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
Yeah I think this one is so obvious everybody noticed :)

Even if its not technically the screen itself responsible here.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sibere:
Does it mean that the left phone is rendering using 24 or 32 bits or applying some dithering to hide the truth ? ;)

The premium app is actually looking like the left phone screen on a Note.

Interesting check has also been posted here
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Whats causing the visible horizontal lines on the Galaxy note, the purpose of having a high quality HD display is ruined by this, I went to the store and saw 2 phones having the same issue but with different densities and visibility.

Extremely obvious in this wallpaper regardless of the brightness.

Anyone who says they dont see any hint of horizontal lines at all please provide a picture with the correct focus to really show that it does not have the issue, right now Im lead to believe that all G-Notes are affected by this :mad:

The image is perfectly rendered on the Galaxy S2 though or any regular LCD for that matter.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] TheQuarterMile:
These issues are becoming really serious now... whats the point of having a HD screen then? Is Samsung aware of these issues or responded in regard to this?

Still confused on wether to buy it or no... Had a bad experience with the SGS2 also!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Id say probably hold off or use the test image I posted and some other grey shades.. its gonna expose screen issues pretty fast!

Putting aside the size of the screen and color saturation ( which is a plus for me ) the HD SAMOLED isnt really any better than say the regular TFT LCD on my old Nokia 5800. The Galaxy S1 is still the best when it comes to defect free SAMOLED.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] TheQuarterMile:
Can you please give me a list of things to check wen I buy the Note?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Raptor1956:
Yep, I think I'll hold off for a while and if Sammy can't pull there head out I won't buy the Note at all. Shame!

Brian
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] seepage:
I do not see any any hint of horizontal lines in this image on my note.

In browser in gallery or wallpaper.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] TeeeJaay:
open the dialer then type *#0*#

it contains all the functionality you would be able to test the phone for any defects (touchscreen, stylus, sound, vibrate, gyro, light sensor, proximity, etc...)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
This is what I see on mine, bad focus but it was the best shot I had that shows the lines.

Can you post a picture of your phone showing that image at low brightness, I just wanna make sure that not all units are affected by this so I can have it replaced.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] seepage:
Never done it before but I will try when I get home.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Looking forward to your pictures, So I can definitely say this is not normal and should be replaced.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] george66gr:
..anyone can answer if this abrupt transition can be fixed? ..Can it be a software issue that may be solved with a calibration tool, an updated firmware or ICS, or is a hardware constraint?

Thanks
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] supercurio:
I can tell is that it's not a hardware issue at all.

All a matter of color profile.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
I really hope things change in ICS or at least you can provide some sort of alleviation.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Alejandrissimo:
That looks exactly as if you change the DPI on a 854x480 phone.....
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] TheQuarterMile:
Duh... Im aware of *#0*# have replaced two S2s before...

Just want to know the summary of defects to look for in the Galaxy Note..

Can someone please tell me...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Screen related?

Same as the Galaxy S2, but no more yellow banding on the left side this time.. it got replaced with a reddish bleeding on the left side or top and faint horizontal/vertical grid lines.

and blacks are not as deep as the S2, not talking about video but when displaying a 000000 image.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] BerreZ:
Update

Hello ,

I sometimes can be resilliant in trying to find a solution.

So first you have to know that I'm surelly not a technician and that I heard for the first time of banding, gamma video and so on on this forum. But I did have owned a lot of smartphones ( my count until today is 23 ) and the fact is that a long time ago I also had problems with pixelated video , but at that time the cpu were slower than 500 mhz , could it be that out Notes can't cope with the video because his cpu is not powerfull enough ?

Secondly I never had a problem with color banding ( XDA developers start screen for instance ) not on my first Note not on my second osne.On the other hand blacks are pixelated and poorely rendered in pictures and video , especially noticable under dark viewing conditions , and then it's realy annoying , especially for a phone of this price.

So this morning I went back to shop where I already exchanged my fist Note and asked some explanations and did some testing.

The explanations : The fist Note had come back from Samsung Belgium with following remarks " They could not find any default and if there was any it was well within the range of quality control Samsung could provide " , so what the .... and what is sure now is that Samsung Belgium won't be able to find a solution or even will try .The technician at the shop did see the problem but is convinced that it is a specification of the amoled screen ( he would not call it a problem !!!!) . When I ask him if that was the case how could he explain to me why The Nexus Galaxy or the Galaxy II or even the HTC Desire first generation with amoled screen did not have that kind of specification (?) he could not answer me and I clearly viewed that I was irritating him.

The testing : At the shop we tried to look at video and pictures with the problem of black rendering on my Note , on my first Note that was returned on a Note that was in the showroom and on a fourth one . On all the phones we could notice the same grey halo and pixelations.

Conclusion : I can't make any . It is possible that the 4 tested phones had the same fhardware defect , not likely tough.

It is possible that it is a software problem that can be adressed by some genius or by Samsung themself but I would not count to much on the last one.

Or it is a combination of hardware ( big amoled screen , cpu and pentile matrix ) and software (16 bits rendering pictures and video software).

Who knows ?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] cenkaetaya:
hey guys i was planning to get a note in the next week but these issues are making me rethink this...

i mean this phone is 100% screen, if anything. i mean its like buying an hdtv with a viewing problem.

i plan to buy the device in HK and then return to the USA, so i am not sure how easy it of possible to use the warranty after.

do you guys think this is an issue that will get worse over time or show up after sometime. i have never had a device with amoled; currently have xperia arc.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Id say hold off and just buy locally.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] QuadLight:
i'am from russia and today i go to some shop and test more than 5 "Note's" all has colors bugs %)

Same of device made in chine, some in korea - all has this issue
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] fujimamatsu:
I would not suggest buying the note in HK if you are not living in there, coz the warranty should be valid in HK only. Moreover, it is painful if you find any problem after returned to USA...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] SAlmighty:
I've seen horizontal and vertical line in all the Notes I cam across. As well as black spots and lines when you perform LCD Test. This is a AMOLED thing.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
TBH, my S2 never had those. My S1 only showed it in greys and extremely faint. on the note it takes no effort to see it.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] SAlmighty:
I know what you mean, I had a SGS1 earlier as well but never came across tint,smudges, black dots / lines, and horizontal lines.

In respect to the horizontal lines in grey or white background, Can it be because of the high resolution?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
I believe its a manufacturing issue.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] SAlmighty:
But the SGS2 had it as well, worse.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Odd, ive been with a total of 7 replacements and I never saw any on the SGS2.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] seepage:
Sorry no idea how to do it

I did have people people download the image on a desire and desire HD and all agrred my note looked the same as theirs.

oops apparently it worked. Sorry about the focus I was not using a proper camera.