Database Users

Yellowish on Galaxy S (GT-I9000) White Edition

I brought my Samsung Galaxy S GT-I9000 (White Edition).
Turn out very disappointed with yellowish color on the screen.
Brand new, purchased at July 25, 2011.
http://s1235.photobucket.com/albums/ff425/cronosmachine/GalaxyS/

yeah! those pics are shows it very clear.
sorry man, it's a shame, but look the bright side, you can always use a kernel that supports Voodoo color. and btw, improve your sound.
look around!! this is XDA, here you can fix almost everything!!

titijuli said:
yeah! those pics are shows it very clear.
sorry man, it's a shame, but look the bright side, you can always use a kernel that supports Voodoo color. and btw, improve your sound.
look around!! this is XDA, here you can fix almost everything!!
Click to expand...
Click to collapse
I did, now i'm using SpeedMod Kernel add +Blue but not to much change.

install talon 0.4.4.6 kernel, then download voodoo control app and adjust colors manualy

Try this setting if you gonna install some kernel with Voodoo Colours.
Screen RGB Multipliers:
R: 1902056960
G: 2106579200
B: 2709919680
Screen v1 gamma hack:
-set to Punchy settings

i'm using galaxian gt1200r kernel +voodoo control plus and man, this made my sgs fly and looking bright.
with symply honey rom... oh, well, i think i'm going to cry...

jetcz said:
install talon 0.4.4.6 kernel, then download voodoo control app and adjust colors manualy
Click to expand...
Click to collapse
Does it apply permanent if I do adjust using Voodoo colors manual?
What happen if change to other kernels?

dukuletz said:
Try this setting if you gonna install some kernel with Voodoo Colours.
Screen RGB Multipliers:
R: 1902056960
G: 2106579200
B: 2709919680
Screen v1 gamma hack:
-set to Punchy settings
Click to expand...
Click to collapse
I like to use SpeedMod kernel, does it will apply permanently after?

I don't remember all of them, but im using Galaxian 1.6 and it has Voodoo Colours.
Look for it in kernel descriptions.

dukuletz said:
I don't remember all of them, but im using Galaxian 1.6 and it has Voodoo Colours.
Look for it in kernel descriptions.
Click to expand...
Click to collapse
I'm trying talon kernel now, I try setting you advise.

Return it to the shop, don't try to fix it with sw, the screen is defective..

[Q] What are Gamma settings?

What exactly does gamma do?
I read somewhere that you can tweak gamma settings with no effect on battery life. So you can turn the screen brightness to the minimum and raise a color setting to make the screen contrast better.
It seems to be a popular feature in kernels, but what exactly do people aim to achieve by changing their gamma settings, I don't get it...

quoting myself from another thread:
dagaetch said:
2.2 is the value you want. As for why, see http://www.cambridgeincolour.com/tutorials/gamma-correction.htm; basically, electronic images are biased a certain way, and gamma correction is intended to remove that bias. since screens are different, you need different settings to correct the appropriate amount to reach 2.2, which apparently became the industry standard at some point.
Click to expand...
Click to collapse

It seems to be a popular feature in kernels, but what exactly do people aim to achieve by changing their gamma settings, I don't get it...
Click to expand...
Click to collapse
we aim at making our eyes happy

dagaetch said:
quoting myself from another thread:
Click to expand...
Click to collapse
Thank You! I think that pretty much halfway answers my question.
Now I wonder the effects of gamma settings on battery, and what brightness/gamma configuration is more 'eye pleasing'.
Is there a general consensious on what that configuration miht be on the Nexus 4 or will I have to play with settings to find out my own?

mastrgamr said:
Thank You! I think that pretty much halfway answers my question.
Now I wonder the effects of gamma settings on battery, and what brightness/gamma configuration is more 'eye pleasing'.
Is there a general consensious on what that configuration miht be on the Nexus 4 or will I have to play with settings to find out my own?
Click to expand...
Click to collapse
There's a few presets that you can find on xda but in reality they'll all need tweaked a bit. Like the other guy said, every screens different.
Nexus 4
ATT Straight Talk $45/mo
running xylon 2.1 4.2.2 faux kernel

mastrgamr said:
Now I wonder the effects of gamma settings on battery, and what brightness/gamma configuration is more 'eye pleasing'.
Click to expand...
Click to collapse
No effect on the battery. This phone has an LCD screen with a backlight, so no matter the colours, the battery drain is the same. The only possible side effect is of your gamma tuning leaves your screen so dark that you have to bump the brightness, which could affect the battery.
Sent from my Nexus 4

KCAL Colour Calibration

Has anyone played with KCAL values to tweak their display settings?
Edit//
For those wondering here's my setup, you must be on an AOSP rom:
ROM: AICP latest nightly
Kernel: Furnace kernel
Tools: KCAL Color Control & Whetstone
Values for deeper blues/blacks and more of an AMOLED feel:
R:245
G:245
B:256
S:50
V:128
C:128
Also from Superuser_, for those who do not have the SVC options
Superuser_ said:
I don't know if the panels are different,but the following numbers give me brilliant white(cold)
R 216
G 222
B 256
Click to expand...
Click to collapse

Here are my settings.

i actually have something pretty similar as well, looks more like AMOLED after the changes:
R:245
G:245
B:256
S:50
V:128
C:128

I don't know if the panels are different,but the following numbers give me brilliant white(cold)
R 216
G 222
B 256

OK I give, can someone point me to the KCAL setting? I'm only aware of the accessibility/color adjustment.

Same here please. I google KCAL and all I get is apps to do with calorie counting. Is it an app and does the phone need to be rooted?
Thanks

Trickstermod can do the same and is in play store. Need root as kcal too

Here guys: http://downloads.codefi.re/savoca/kcal

imapfsr said:
Same here please. I google KCAL and all I get is apps to do with calorie counting. Is it an app and does the phone need to be rooted?
Thanks
Click to expand...
Click to collapse
rzracer2 said:
OK I give, can someone point me to the KCAL setting? I'm only aware of the accessibility/color adjustment.
Click to expand...
Click to collapse
It seems to be aosp only with a supported kernel

Superuser_ said:
I don't know if the panels are different,but the following numbers give me brilliant white(cold)
R 216
G 222
B 256
Click to expand...
Click to collapse
what kernel are you using?
i was on 777 for a while but it lacked (vs. furnace) the saturation, contrast and value section, those parts seemed to be the most important for getting that deeper/cooler look

Cow07 said:
what kernel are you using?
i was on 777 for a while but it lacked (vs. furnace) the saturation, contrast and value section, those parts seemed to be the most important for getting that deeper/cooler look
Click to expand...
Click to collapse
Yah agree..
I'm on crash rom official..I think has stock kernel
This app let me using only the RGB parameters but with those numbers I have the same white and same level of max brightness compared with my girlfriend's G2

@goxi87 @Cow07 so which Rom are you using? Really wan to know which Rom has the compatible kernel for this app Thanks in advance
"Make it COUNT"

CM12 with Furnace kernel

I installed V1.1 - I am on stock Rom Sprint LS990 and i have RGB settings but no SVC.
Anyone know why???

Must be on Furnace kernel. But this kernel is for AOSP roms.

Thanks! Will definitly switch to furnace
"Make it COUNT"

HK-AD said:
Thanks! Will definitly switch to furnace
"Make it COUNT"
Click to expand...
Click to collapse
I'm on aicp with furnace. 777 has kcal implemented as well but doesn't have the saturation settings though.

HK-AD said:
@goxi87 @Cow07 so which Rom are you using? Really wan to know which Rom has the compatible kernel for this app Thanks in advance
"Make it COUNT"
Click to expand...
Click to collapse
ingoljosh said:
I installed V1.1 - I am on stock Rom Sprint LS990 and i have RGB settings but no SVC.
Anyone know why???
Click to expand...
Click to collapse
I edited my first post to summarize the required things for colour control

Superuser_ said:
I don't know if the panels are different,but the following numbers give me brilliant white(cold)
R 216
G 222
B 256
Click to expand...
Click to collapse
This is working nicely on mine as i am on stock kernel (linux) and only have access to RGB
BIG difference, stock settings gives off a yellowish white (compared to my G2) and with this setting it matches whites exactly. i wish it were a bit brighter though.

ingoljosh said:
This is working nicely on mine as i am on stock kernel (linux) and only have access to RGB
BIG difference, stock settings gives off a yellowish white (compared to my G2) and with this setting it matches whites exactly. i wish it were a bit brighter though.
Click to expand...
Click to collapse
try and the following numbers(if the previous shows to you a bit blue..):
R 229
G 216
B 256

HTC One (M9) Colour Control Screen Settings

Hello!
My first thread on XDA Developers.
I've been a lurker on these forums for some time having used various custom ROMs and kernels for Windows Mobile, Windows Phone 7 and now Android. I've mostly been a big advocate of Samsung gear until they decided to release the S6 with no storage expansion as this is what I looked for in any phone I upgraded to. This led me to buy the HTC One M9. The community so far has been great with custom ROMS and Kernels with the limited sources provided by HTC so I figured I would give something back to the HTC One M9 community.
Now it has been said that the HTC One M9 screen is not as great as it could be and is in fact a downgrade compared to the M7 and M8. This is mostly due to the fact the screen is calibrated very "cool" (8500k) temperature. With that in mind I just used my X-Rite i1Display Pro to get the white point to D65 (aka 6500k) and succeeded within a few minutes.
The settings I have are for the HTC One M9 UK EE gold/gold edition but I'm sure the settings can be used on other variants from other network providers in other countries too as it will at least get you close to D65 for more accurate colour reproduction on the screen.
I guess I've said a lot so I'll shut up and share the settings with you - please note I've used the colour control aspect of the custom kernels available to make the changes.

Ew that's crazy yellow lol. Try mine

I forgot to mention the rest of the saturation, value, contrast, hue need to be set to their default.
Considering my settings are not working on yours Reubenskelly1992 and yours are VERY blue, even more so than what I had out of the box on my M9, could it be there's a much bigger variation in screen quality?

reubenskelly1992 said:
Ew that's crazy yellow lol. Try mine
Click to expand...
Click to collapse
skeet94 said:
I forgot to mention the rest of the saturation, value, contrast, hue need to be set to their default.
Considering my settings are not working on yours Reubenskelly1992 and yours are VERY blue, even more so than what I had out of the box on my M9, could it be there's a much bigger variation in screen quality?
Click to expand...
Click to collapse
Maybe we need to compare Serial Num mine begins with FA53HYJ and @skeet94 setting are very close to what i have found works
My blue setting has to be at 230 or it's way too blue
I found this to determine what the serial number means
http://droider.eu/2014/12/20/how-to-know-where-your-htc-phone-was-made/
mine = Taiwan 2015 / March / 17

What Kernel are you guys using?

Where do I find color settings? Or are you guys using any special app?

clsA said:
Maybe we need to compare Serial Num mine begins with FA53HYJ and @skeet94 setting are very close to what i have found works
My blue setting has to be at 230 or it's way too blue
I found this to determine what the serial number means
http://droider.eu/2014/12/20/how-to-know-where-your-htc-phone-was-made/
mine = Taiwan 2015 / March / 17
Click to expand...
Click to collapse
Fantastic!
Mine is Taiwan 2015 / March / 26
ragiut1 said:
What Kernel are you guys using?
Click to expand...
Click to collapse
I'm using OQC Kernel v002.
Karl-Johan said:
Where do I find color settings? Or are you guys using any special app?
Click to expand...
Click to collapse
Colour settings are part of custom kernels as mentioned in my first post.

skeet94 said:
Fantastic!
Mine is Taiwan 2015 / March / 26
I'm using OQC Kernel v002.
Colour settings are part of custom kernels as mentioned in my first post.
Click to expand...
Click to collapse
Any way to calibrate the screen without custom rom?

ragiut1 said:
What Kernel are you guys using?
Click to expand...
Click to collapse
Karl-Johan said:
Where do I find color settings? Or are you guys using any special app?
Click to expand...
Click to collapse
LeeDroid Kernel >> http://forum.xda-developers.com/one-m9/development/rom-leedroid-one-m9-v7-0-0-rc1-march-t3068468
and the Color Control app > http://downloads.codefi.re/savoca/kcal
Kernel Adiutor in the play store also has these settings
Info: If you boot into Download mode and choose System Info you can find your LCD
Mine is LCD: TDI_RES_69338

I have tried many different settings taken from the forum. But I think the most similar to the setting of M8 (maybe not the preferred for many) is mine, for now. Try it, tell me what you think.

At what brightness do you calibrate the colors at? Does it matter?

Voltor46 said:
I have tried many different settings taken from the forum. But I think the most similar to the setting of M8 (maybe not the preferred for many) is mine, for now. Try it, tell me what you think.
Click to expand...
Click to collapse
LeeDroid added a Brightness patch here
http://forum.xda-developers.com/showthread.php?p=60639310
It seems to have helped the look of my kcal settings. I turn off auto brightness and set mine too about 55% (2 clicks in the quick setting toggle)

These are my settings I use with ex app. Gives me a little more saturation and darker blacks

flar2 has added the color control for the stock kernel here >> http://forum.xda-developers.com/one-m9/development/mod-color-control-t3104598
you will still need custom recovery and root to use it
ViperOneM9 1.6.0 has added the RGB color control also.
To get everyone up to speed @LeeDroid added this feature about 2 weeks ago and their seem to be 2/3 different set of settings that bring the display up to the M8 standard.
@reubenskelly1992 latest setting
R:245
G:240
B:255
Min:101
Sat:43
Value:139
Contrast:130
hue:16
Updated:
R. 245
G. 235
B. 250
M. 100
Sat. 42
Value. 138
Contrast. 130
Hue . 14
and @skeet94 Settings in the first post
R:251
G:225
B:206
Min:35
Sat:32
Value:128
Contrast:128
hue:0
and My version of the above settings combined (sort of lol )(Sensor Info: LCD: TDI_RES_69338)
R:250
G:240
B:230
Min:100
Sat:40
Value:132
Contrast:138
hue:16

clsA said:
flar2 has added the color control for the stock kernel here >> http://forum.xda-developers.com/one-m9/development/mod-color-control-t3104598
you will still need custom recovery and root to use it
ViperOneM9 1.6.0 has added the RGB color control also.
To get everyone up to speed @LeeDroid added this feature about 2 weeks ago and their seem to be 2/3 different set of settings that bring the display up to the M8 standard.
@reubenskelly1992 latest setting
R:245
G:240
B:255
Min:101
Sat:43
Value:139
Contrast:130
hue:16
and @skeet94 Settings in the first post
R:251
G:225
B:206
Min:35
Sat:32
Value:128
Contrast:128
hue:0
and My version of the above settings combined (sort of lol )
R:250
G:240
B:230
Min:100
Sat:40
Value:132
Contrast:138
hue:16
Click to expand...
Click to collapse
Thanks for this

clsA said:
flar2 has added the color control for the stock kernel here >> http://forum.xda-developers.com/one-m9/development/mod-color-control-t3104598
you will still need custom recovery and root to use it
ViperOneM9 1.6.0 has added the RGB color control also.
To get everyone up to speed @LeeDroid added this feature about 2 weeks ago and their seem to be 2/3 different set of settings that bring the display up to the M8 standard.
@reubenskelly1992 latest setting
R:245
G:240
B:255
Min:101
Sat:43
Value:139
Contrast:130
hue:16
and @skeet94 Settings in the first post
R:251
G:225
B:206
Min:35
Sat:32
Value:128
Contrast:128
hue:0
and My version of the above settings combined (sort of lol )
R:250
G:240
B:230
Min:100
Sat:40
Value:132
Contrast:138
hue:16
Click to expand...
Click to collapse
Would you guys mind posting which LCDs each of you have for your recommended settings? I'd imagine these settings only work with specific screens.

Genetic517 said:
Would you guys mind posting which LCDs each of you have for your recommended settings? I'd imagine these settings only work with specific screens.
Click to expand...
Click to collapse
On general these should work and it's a guideline so every device may be slightly different but probably just a little bit of tweaking

Genetic517 said:
Would you guys mind posting which LCDs each of you have for your recommended settings? I'd imagine these settings only work with specific screens.
Click to expand...
Click to collapse
I posted all my info in post #4 and post #9
I haven't found an app that tells the exact screen make/model

clsA said:
I posted all my info in post #4 and post #7
I haven't found an app that tells the exact screen make/model
Click to expand...
Click to collapse
You gotta go into bootloder mode and there is an option there to see settings

nazrin313 said:
You gotta go into bootloder mode and there is an option there to see settings
Click to expand...
Click to collapse
yeah it's in post 9 and updated post #14

Axon 7 Screen Color Oversaturated

Folks,
Anyone facing issues screen color over saturated with stock rom? Any one had any tools or apps which can re-calibrate or fix it?

If you have rooted your Axon 7, then you can install the Color Control app. This app will allow you to calibrate the screen color. Should this app doesn't work, flash the KCAL kernel patch for adding this feature to the stock kernel.
Enjoy!

Oki said:
If you have rooted your Axon 7, then you can install the Color Control app. This app will allow you to calibrate the screen color. Should this app doesn't work, flash the KCAL kernel patch for adding this feature to the stock kernel.
Enjoy!
Click to expand...
Click to collapse
If i'm not rooted then is there any other apps i can use? Thanks anyway !

ramnkc said:
If i'm not rooted then is there any other apps i can use? Thanks anyway !
Click to expand...
Click to collapse
No, the kernel doesn't support this hardware feature and the app requires root access to modify the settings. So the only way is unlocking the bootloader and rooting the device.

Oki said:
No, the kernel doesn't support this hardware feature and the app requires root access to modify the settings. So the only way is unlocking the bootloader and rooting the device.
Click to expand...
Click to collapse
noted, probably need to read thru some threads to make sure how unlocking and rooting works as mine is A2017G version.....

ramnkc said:
Folks,
Anyone facing issues screen color over saturated with stock rom? Any one had any tools or apps which can re-calibrate or fix it?
Click to expand...
Click to collapse
Isn't changing the default setting to "natural" enough though? I find the color quite washed out with that mode. TBH the main problem for me isn't saturation but rather contrast: colors seem to "melt" with one another, particularly on 3D games

Display --> screen effect.
I keep mine on gorgeous and normal and it looks great. I like punchy colors. Shows off this great AMOLED screen.