yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Nexus] nfin1te:
I fear not, I only tried to explain why the targets are not optimal if you want some kind of color management on the phone. (still, quite useless if you ask me, since you probably are limiting your displays gamut, making gradients looking choppy)
[Samsung Galaxy Nexus] dark79:
I don't think it's a typo. By default my screen is already very bluish. Taking 10 off the red and adding 10 blue would turn it into Smurf village :)

I'm using -10 0 -5 and I think it looks good.
[Samsung Galaxy Nexus] FatherD:
Haha .. love it .. it would be way too blue! I think your settings look good, but the greys do look a bit greenish! I think that the default settings given by Franco in the updater app are really good, but I don't like having to apply the multiplier settings after every boot, which is why I ended up with setting I mentioned. I also think we all have to take into account that our screens will differ a bit as has been mentioned elsewhere, so mine or your settings might not work for others.

All the best
[Samsung Galaxy Nexus] arzbhatia:
Does Trinity kernel have Color control? :-\
[Samsung Galaxy Nexus] irishrally:
Not yet ... .
[Samsung Galaxy Nexus] dawiseguy77:
Hey everybody I wanted to share my settings and a video I love to use to really get the full effect of the changes you make. First I'm using GLaDOS 1.17 with GLaDOS control app. My settings are 1823686, 1907054, 2004318. -10, 0, 10. 50% brightness. My screen is beyond amazing! Here's the video. Enjoy

http://www.youtube.com/watch?v=Ty-VYFkKQNU&feature=youtube_gdata_player
[Samsung Galaxy Nexus] arzbhatia:
Umm.. wrong video?

---------- Post added at 04:32 PM ---------- Previous post was at 03:58 PM ----------

So wait, to remove the blue-ish purple tint from the greys, I should edit the last value of -10, 0, 10 <-- this one and change the last value of the other command too?
[Samsung Galaxy Nexus] darrendm:
hahaha, must be right?!
[Samsung Galaxy Nexus] Booker-T:
Can anyone explain how the multiplier affect the colors?
[Samsung Galaxy Nexus] dawiseguy77:
The video is correct its just a 1080 p nature video that runs through scenes with multiple colors and whites just so when you set your settings you can see what it looks like it won't do it for you. It allows you to experiment with your settings and such. Try my settings then play the video and you will notice how crisp the Colors are and how the white the whites look. Also be sure to turn on HD streaming in YouTube settings, or it won't look good
[Samsung Galaxy Nexus] peppies:
My settings are :

196 166 206

-4 0 4

Best for my Nexus

Odesláno z mého Galaxy Nexus pomocí Tapatalk
[Samsung Galaxy Nexus] jenicekk:
196 / 168 / 205

-4 / 0 / 5

Gnex from tmobile CZ
[Samsung Galaxy Nexus] dave83uk:
For me

170 / 168 / 205

-6 0 6
[Samsung Galaxy Nexus] gtizon:
Hi team,

Just so I understand, when tweaking the gamma what does it actually affect visually? There are three values to change, what does each value actually mean? Thank you!
[Samsung Galaxy Nexus] MS.:
R(ed)G(reen)B(lue). That's the values you see in OP. In particular order.
[Samsung Galaxy Nexus] lkwjason:
Does it only work when the brightness is 50%?? thx
[Samsung Galaxy Nexus] heo_con184:
The values from OP works best with 50% brightness.

If you change your brightness, let's say 40%, you should also change these values. You should find your own proper numbers.
[Samsung Galaxy Nexus] gtizon:
In terms of effects, whats the diff between changing the multipliers and the Gamma v1? Thanks!
[Samsung Galaxy Nexus] SwiftLegend:
If I am using Franco's kernel and his control app, can I just put the values into the Color Control settings in the app or do I have to create the file in init.d ?

EDIT: There is also 2 files called 12color and 12gammaoffset. Do I need to delete those before hand?
[Samsung Galaxy Nexus] ArmanUV:
no. just use franco's app.

the app creates the init.d files for you.
[Samsung Galaxy Nexus] Arcadia310:
I'm rocking out with Franco's recommended settings and the screen looks MUCH better than by default.
[Samsung Galaxy Nexus] mistermojorizin:
since everyone's settings are different, can someone post a step by step guid to figuring out which settings are best for a particular screen? like is there some sort of colorometer or something? i mean my eyes aren't really well calibrated. i have no idea what correct colors are supposed to look like.
[Samsung Galaxy Nexus] Jayrod1980:
Yes second this!
[Samsung Galaxy Nexus] ArmanUV:
I find it to be super blue. his latest app recommend 229/262/307 ! VERY different form stock or OP's recommendation.

---------- Post added at 10:18 PM ---------- Previous post was at 10:16 PM ----------

A decent estimate is to compare a white paper side by side with a white background like a blank browser tab under NATURAL LIGHT.
[Samsung Galaxy Nexus] ztm.000:
I feel like stock gamma looks just fine. I've been tweaking it with Franco kernel and all that, and it looks way unnatural, no matter how much I tweak it. I always revert to my trusty old Apex kernel. I'm gonna stick with how colors were intended to look through Google's eyes. Just my opinion.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] FC1032:
I'm running Manhattan right now with francos kernel...

Where is this control app you guys are talking about?
[Samsung Galaxy Nexus] dave83uk:
Franco kernel updater on the market
[Samsung Galaxy Nexus] theineffablebob:
Works fantastically. I had overly warm colors before but now they're almost perfect.
[Samsung Galaxy Nexus] benyamin22:
Is it possible to make a flash able file? That would be great
[Samsung Galaxy Nexus] mistermojorizin:
can anyone make this image blend at 2.2?

http://www.lagom.nl/lcd-test/gamma_calibration.php
[Samsung Galaxy Nexus] MS.:
I don't think these graphs were made in mind with our SAMOLED screens ;-)
[Samsung Galaxy Nexus] MS.:
Here you go ;) Just flash it from CWR, no need to wipe anything afterwards.

EDIT: File removed as it doesn't work.
[Samsung Galaxy Nexus] flavoristic:
I'll try it out. Ty
[Samsung Galaxy Nexus] demon2112:
does this only work if you are on francos kernel???

because im on android hd with nearly stock kernel but wanna try it a little
[Samsung Galaxy Nexus] MS.:
This works only on kernels with color control support. Once i have more time i will have a look if it's possible to make something for stock ROM's/kernels.
[Samsung Galaxy Nexus] flavoristic:
Definitely works with Franco.. I just tried it it and its good.
[Samsung Galaxy Nexus] flavoristic:
Its a nice improvement if u r going to have your screen brightness at least above 30%. Otherwise you will have weird grainy colors in your background and your pictures.
[Samsung Galaxy Nexus] phunghoang24:
how do i revert back to default?

i don't feel the difference?
[Samsung Galaxy Nexus] flavoristic:
You should have made a backup before u flash this.
[Samsung Galaxy Nexus] MS.:
If you feel no difference, there's nothing to revert back then :D

ALWAYS DO NANDROID BACKUP BEFORE FLASHING ANYTHING.
[Samsung Galaxy Nexus] phunghoang24:
thank,

i want to do it more quickly, restore about 10 minutes and 3-5% battery :(
[Samsung Galaxy Nexus] MS.:
One day those 10 minutes might save your phone ;)

Flash attached file, this should set defaults.

EDIT: File removed as it doesn't work.
[Samsung Galaxy Nexus] phunghoang24:
Thank,

may i change my SGS i9000 by this?
[Samsung Galaxy Nexus] STONEMC:
Doesn't work with new Franco kernel....always a to blue screen...with this file and without.
[Samsung Galaxy Nexus] nklenchik:
For Franco users:

I've found these work best for me. Whites are white believe it or not.

-10/0/10

200, 230, 270
[Samsung Galaxy Nexus] Bavilo:
Will this work with aokp b27 and fugumod kernel?

I tested it but for some reason, the colors don't change...
[Samsung Galaxy Nexus] franciscofranco:
Hi. I tested your values and the screen feels very yellowish, specially the whites. While watching pictures on the gallery the colors feel correct, but not very vibrant. Is this intended? I'm not a very knowledgeable person regarding color specifications.

Thanks for the original post :)
[Samsung Galaxy Nexus] inffy:
Still a lot of blue tint with these, like with the defaults in Franco.Kernel
[Samsung Galaxy Nexus] :
Looks good to me.

I entered the values described in the OP on AOKP #27 and franco.Kernel Milestone 1 and all looks well for me. Thank you.
[Samsung Galaxy Nexus] demon2112:
i have a init.d folder ,soooo does this mean my kernel supports it??? soooooo this DOESNT mean that colorcontrol is supported right?? but i could manualy change it?? am i right??
[Samsung Galaxy Nexus] Bavilo:
Why don't these settings work for me using the exact same setup? Are you using init.d or the franco kernel updater app?
[Samsung Galaxy Nexus] ElCondor:
This mod has been featured on the portal.

Found or created something newsworthy for the XDA portal? Contact any news writer.

Best regards,

ElCondor

XDA News Writer
[Samsung Galaxy Nexus] :
I use the franco kernel updater app. I am just judging this with the naked eye so I am not sure how great it really is. It just looked good to me.
[Samsung Galaxy Nexus] dawiseguy77:
Just some hopefully helpful info for others to try. I used GLaDOS 1.17 kernel from ezeekel and his app. I tested the op settings on my phone against my wifes LG spectrum display (which has the best looking whites I've seen on any phone by the way, and some amazing color too.) anyway with the op values The whites look too greenish yellowish not actual white. The colors where not as vibrant either. The only thing that I thought looked better were the blacks, sooo I started to play with the settings and I've found a great group of settings that when compared against my wife's phone were actually better. Colors to me popped whites were actually white. Listed are what I use if any of you want to try them also an HD video is included that is great for seeing different scenes of blacks whites greys color that I feel helps gauge your settings to your perfect liking.

1. -9, 0, 9

2. 1800000, 1880000, 1900000

3. 50% brightness

4. Video. It doesn't change anything its just you can see how your settings look. Make sure to turn on HD streaming.

http://www.youtube.com/watch?v=Ty-VYFkKQNU&feature=youtube_gdata_player
[Samsung Galaxy Nexus] nbeebe24:
Franco's recommended settings look perfect on my phone
[Samsung Galaxy Nexus] arzbhatia:
Any one with the purple-blue tint issue running Franco M1 able to find some good settings for our phone?
[Samsung Galaxy Nexus] inffy:
This is how my screen looks with these settings...i think that is pretty blue
[Samsung Galaxy Nexus] nbeebe24:
You realize its impossible to tell with just a screen shot? You have to take a picture of your screen with another camera
[Samsung Galaxy Nexus] demon2112:
someone? Please?

Verstuurd van mijn Galaxy Nexus met Tapatalk
[Samsung Galaxy Nexus] KillerbeeNL:
Folow mode on :D
[Samsung Galaxy Nexus] dawiseguy77:
What kernel do you have? The init.d script only makes sure that it doesn't reset back to defaults when rebooting I believe. Try GLaDOS 1.17 there is also an app you can get from the market its an amazing kernel and ezekeel the device is very thorough and knowledgeable with his info along his kernels. Link to kernel

http://rootzwiki.com/topic/14703-05-mar-glados-v118/page__view__getnewpost
[Samsung Galaxy Nexus] gtizon:
Hey here are my values at 40% brightness. These work for me. 129 162 207 gamma 1 1 2
[Samsung Galaxy Nexus] MS.:
After seeing good few people saying that this doesn't work i decided to try it myself. I used AOKP build 27 + franco.kernel milestone 1 and it really didn't work. And i guess it didn't worked because of requirement number 1:

"Make sure you have a rom/mod with /init.d autorun function"

If you're using ROM without init.d autorun function you can:

1. Do these 3 steps.

2. Download Script Manager from Market

3. Open Script Manager

4. Navigate to /etc/init.d/ and open file "900colorcontrol-b50"

5. Tick "Su" and "Boot" boxes, click "Save" and then "Run".

6. Do not uninstall Script Manager.
[Samsung Galaxy Nexus] Audionut11:
While this might get a display closer to standard, every display device is different (hence the need for colorimeters).
[Samsung Galaxy Nexus] inffy:
So AOKP doesn't have init.d autorun then?
[Samsung Galaxy Nexus] fr4nk1yn:
Dropped the script AOKP +27 w/faux123 kernel's init.d folder, rebooted and could be a placibo effect but white is whiter.

The IPhone 4s, and even my daughter's stratosphere, looked "clearer" due to the colors. Big step in the right direction.
[Samsung Galaxy Nexus] Salem24:
Can't install script manager. it says my device isn't compatible. Changes my dpi to 260.
[Samsung Galaxy Nexus] MS.:
It works fine for me on default DPI.

Try to set some insane values like 30 -20 -20 and you will see.

When scrip is placed in init.d folder nothing happens, when Script Manager runs this script the colors changes. I'm not developer nor coder, but this makes me think that AOKP simply doesn't run scripts automatically. Or i'm doing something wrong.
[Samsung Galaxy Nexus] Pego71:
whit my gnexus the colors are much better, I rom aokp 27 with popcorn kernel 2.4.1,thanks : D
[Samsung Galaxy Nexus] nklenchik:
http://www.theverge.com/2012/3/4/2844161/galaxy-nexus-calibrate-screen-instructions

Lol this article says they have 5 Nexuses and all 5 have slightly different color tints
[Samsung Galaxy Nexus] MS.:
OK, it's definitely something wrong with AOKP build 27.

"He's posted some quick instructions on how to get the screen more accurate if you're keen to do so. First off, you'll want to have your Galaxy Nexus rooted. Once that's done, you're going to need a ROM with init.d autostart support (AOKP should do the trick, so long as you enable startup tweaks in the settings menu), as well as a kernel with ColorControl (franco.kernel, for example). Once you've got that all set up you just need to add a file with the color settings to a folder in your phone and you'll be good to go."

Quote from this article (thanks nklenchik) - http://www.theverge.com/2012/3/4/2844161/galaxy-nexus-calibrate-screen-instructions

I quickly flashed AOKP build 27 and i can't see anything related to startup tweaks BUT i'm nearly sure that i have seen them while playing with one of older builds.

So guys, after thanking OP don't forget to mention your current ROM, please.
[Samsung Galaxy Nexus] :
Once I do this what should the values be set at, so I can tell if it worked or not? After doing this my values are at 182,190,200 -10,0,-10.
[Samsung Galaxy Nexus] ctbear:
I don't have problem with init.d scripts on b27. Have you tried other scripts?
[Samsung Galaxy Nexus] MS.:
Yes, that's the values from OP.

Nope. Wanna share some sample?

EDIT: It's enough to type following command in Terminal Emulator as root:

busybox run-parts /system/etc/init.d/

Though, the settings won't survive a reboot... Could someone with a bit more experience explain us why is this happening?
[Samsung Galaxy Nexus] ctbear:
You can try some random harmless scripts. Example:

#! /system/bin/sh
touch /sdcard/testfile

Put the script in init.d, set correct permission (755), and reboot. After boot go to /sdcard and see if you find the file "testfile".
[Samsung Galaxy Nexus] MS.:
After reboot nothing happens and if i launch it with Script Manager, then "testfile" is being generated upon every device boot... Scripts are chmoded as "rwx-rwx-rwx".

Are you sure they are working for you on AOKP build 27?
[Samsung Galaxy Nexus] nbeebe24:
Script works for me on aokp 27. If you're unsure and have the Franco app, go to the colorcontrol tab and look at the values. They should be the ones in the OP. I just rebooted my phone and watched my screen change after a few seconds. That's the best indicator
[Samsung Galaxy Nexus] Salem24:
Can't see any difference. I am on AOKP 27 and franco's kernel. Tried the method with script manager. But it says: "cannot create /sys/class/misc/colorcontrol/v1_offset: No such file or directory: not found/900colorcontrol-b50[2]"
[Samsung Galaxy Nexus] MS.:
For testing i use 30 -20 -20 vlaues and trust me, there's no need for any app to spot the difference once these settings kicks in :D But thanks for trying to help.
[Samsung Galaxy Nexus] nbeebe24:
The script is supposed to be in /system/etc/init.d
[Samsung Galaxy Nexus] nbeebe24:
I could see the difference without the app. I just used it to reassure myself I wasn't imagining the change
[Samsung Galaxy Nexus] Salem24:
The script file is in this folder. Used the batch file to put it there. And I selected this file with script manager as described before.
[Samsung Galaxy Nexus] Grrr_23:
Hi

When I entered the /etc/init.d ，there is a problem when I created a new file，it shows “you can’t create a new file here because the file system is read only”。

And I didn't understand the step1，maybe that is the reason ?

Sorry for my bad english
[Samsung Galaxy Nexus] Salem24:
I changed the values manually but I have the feeling that the color is slightly blueish? ...maybe I was just used to the reddish color.
[Samsung Galaxy Nexus] MS.:
Do:

adb remount
[Samsung Galaxy Nexus] ctbear:
Permission should be rwx rx rx

Easiest way is to do it on adb shell or terminal

chmod 755 [script_name]
[Samsung Galaxy Nexus] MS.:
Still nothing :( Is there anything specific you have to do after flashing new ROM to get them working?
[Samsung Galaxy Nexus] Grrr_23:
Thx for replying..

But I don't understand this step.

how to do this code?where?

Sorry for my bad basic knowledge...:o
[Samsung Galaxy Nexus] MS.:
That was ADB command that mounts system partition as writable. By some reason i assumed that you're using ADB to push "900colorcontrol-b50" file to your phone, sorry.

Tell me step-by-step how you're trying to create that "900colorcontrol-b50" file?
[Samsung Galaxy Nexus] Grrr_23:
I'm using the explorer to add new file like the picture below.
[Samsung Galaxy Nexus] shingers5:
it defo works with build 27 and franco kernel updater. used app and change gamma values to -10,0,-10 and it changed right before my eyes. not ideal for me so returned to -4,0,5 with 182, 190 and 200. i seem to have a colour fade in bottom left hand corner though
[Samsung Galaxy Nexus] MS.:
Make sure you have enabled "Mount /, /system as writable" (that's screenshot from ES File Explorer, but i guess Root Explorer should have something similar).
[Samsung Galaxy Nexus] Grrr_23:
It seems that Explorer doesn't have the function of mounting system as writable，so I used ES File Explorer to let system as writable，and then add a file like the beginning said，reboot，it seems the color performance gets better than before.

Thanks！！！！:D
[Samsung Galaxy Nexus] ctbear:
Nothing special is needed. What kernel are you running? Maybe check you init.rc?
[Samsung Galaxy Nexus] MS.:
Normally I use CM9 nightlies and it's original kernel, but now for testing i used AOKP build 27 and franco.kernel milestone 1.

The following script doesn't work on both of these ROMS...

#!/system/bin/sh
# newfile
touch /sdcard/newfile

I've place this file in /etc/init.d/ and chmoded to 775, also i tried rwx-rx-rx. After reboot permissions stays as i set. What i'm doing wrong? Also, what should i look for in init.rc?
[Samsung Galaxy Nexus] ctbear:
Scroll down and find something along these lines:

service run_parts /system/xbin/run-parts /system/etc/init.d
class main
oneshot

What does it say for you?
[Samsung Galaxy Nexus] MS.:
None of these lines exist on my init.rc. Can i add them anywhere on init.rc or there's some specific location where it has to be inserted?

EDIT: ok, i've added them three lines at the end of services, but after reboot nothing happens. Just in case i've reinstalled busybox but no luck. I'm on CM9 ROM/kernel right now.
[Samsung Galaxy Nexus] arzbhatia:
Script Manager doesn't work for me :( Blank screen!

Edit : Okay, finally everything is working :) (You have to run it 4-5 times in order to make it work)
[Samsung Galaxy Nexus] ctbear:
As far as I know init.rc is included in the ramdisk of the boot image. I'm quite certain you can't just modify the file.

You can try different kernels (I don't know what works for CM) or ROMs. If you are going back to AOKP make sure you set the correct permissions this time.
[Samsung Galaxy Nexus] MS.:
Yup, i checked init.rc file after reboot and there's no more changes made by me. I'll do some research to see if there are any good kernels for CM9 and then will try same thing again.

PS. I can't use franco.kernel for daily use as there are some incompatibility with GTA III game (it just won't start) and AFAIK other users have confirmed same.

I could use Trinity kernel but there's no color control support. Obviously i don't wanna go back to stock settings after seeing how my GNex screen can look :)

Thanks for shedding some light on this.

EDIT: Now i'm on AOKP M4 + default kernel and all scripts starting automatically. So, if AOKP does support autoruns of init.d scripts then what was the problem? Franco kernel?
[Samsung Galaxy Nexus] arzbhatia:
Okay, the script manager way isn't working for me..

---------- Post added at 07:08 PM ---------- Previous post was at 07:03 PM ----------

Edit : OH! It is working! :D
[Samsung Galaxy Nexus] jkc120:
Fixed the video blockiness/color banding?

Has anyone found a way to get the color banding (abrupt gradients in solid colors) and blockiness in videos to go away by tweaking the gamma numbers or multipliers?

I tried a bunch of different settings. The best I could do was make the blockiness/color banding less purplish. The blocks/banding is still there, though. :(
[Samsung Galaxy Nexus] cchant:
The main problem I have is in dark videos and pictures. The blacks tend to get really noisy and pixelated
[Samsung Galaxy Nexus] jkc120:
Me, too. And this color control feature doesn't seem to help in that respect :(

I was hoping it would, but I have a feeling crappy video playback isn't going to get fixed, even by a 3rd party app, on the Nexus. :(
[Samsung Galaxy Nexus] Milamber33:
I suspect the problem in that case is the pics and videos you're looking at. The problem with a screen as high contrast and resolution as the one on the Galaxy Nexus is that it shows you all the compression artefacts which poorer screens just blur out of existence.

Bottom line: unless you see that pixelation and graininess in EVERYTHING, including the home screen, app drawer, etc, then it's not a problem with the screen.

Sent from The Past into The Future via The Present. :)
[Samsung Galaxy Nexus] jkc120:
While compression artifacts do make it worse on the nexus screen, that's not entirely the cause. And I shouldn't have to play 40 GB bluray rips just to make the video watchable.

Rather than regurgitate what EarlZ said, I'll post a link to his post:

http://androidforums.com/4051297-post276.html
[Samsung Galaxy Nexus] Milamber33:
Then I would expect to see artefacts elsewhere, as I said. Still, if Samsung have admitted that it's a problem, I'm not going to argue with them.

Sent from The Past into The Future via The Present. :)
[Samsung Galaxy Nexus] jkc120:
It does. I can see it on the screen when taking a picture. Also, if you read the galaxy note thread about a similar problem, there are some images that demonstrate it, too.
[Samsung Galaxy Nexus] nurbsenvi:
Galaxy S2 needs this mod desperately...

Hi everyone!

does anyone know if this mod is available on Galaxy S2 at all?

blue hue on my phone is killing me everything looks blue and lifeless :(

damn Samsung...
[Samsung Galaxy Nexus] ranova:
question, why bother going through all the init d scripts/script manager? If your kernel supports colorcontrol, just manually edit:

/sys/class/misc/colorcontrol/v1_offset

and

/sys/class/misc/colorcontrol/multiplier

Also editing these, then saving applies changes right away, no need to reboot. Am I missing something here?
[Samsung Galaxy Nexus] Mithos der Held:
Color shift in the screen.

I'm curious if anyone has had this issue. I tend to have a gradient of color shift from yellow to blue with my nexus. Only is noticeable in landscape mode with the keyboard up. But i've noticed it throughout images and such.
[Samsung Galaxy Nexus] Salem24:
After reboot values are set back to default.