yashsingh1/xdaforums huggingface dataset:
[Nexus 5 Themes and Apps] magnamentis:
double reboot will do

if you tick off "on boot" and reboot you will be back to stock and latest after another reboot the app will show the stock settings again.

i'm basically happy how it is now so that i can go from scratch after two boots but don't have to, just in case after one boot :)

should you not be able to reproduce these steps, send me a pm so that i can check what exactly might be the problem

Current Devices:

N7000, 4.1.2 Stock/TW

N7100, PacRom, 4.3.1, Pac Kernel

Nexus 4, PacRom, 4.3.1, Franco Kernel r193

I9100, OmniRom, 4.4.1, Gustavo_s CWM-Kernel, Xposed Framework

Nexus 5, Cataclysm ROM 4.4.2, Faux Kernel v05, Xposed Framework, Gamma 2.4<>2.5
[Nexus 5 Themes and Apps] ChazzMatt:
Really? Going to test it. That means after 2 reboots of UNticking "set on boot" the app should revert to whitepoint at stock "32".

______

UPDATE: That actually worked! Thanks. Easy way to re-set back to stock gamma numbers.

Not that I want stock gamma, but if someone really messes up, it's an easy way to start over.

_______

Sent from my Nexus 5 (LG-D820)
[Nexus 5 Themes and Apps] drawde40599:
Is [MENTION=3477239]bundi22[/MENTION] in here ? Very interested in your settings if u upgraded from N4
[Nexus 5 Themes and Apps] worldboss:
I can't see a change after adjusting the gamma settings. Or are the changes really small? Only whitepoint seems to work for my..
[Nexus 5 Themes and Apps] bundi22:
I'll be getting a nexus 5 within the next month hopefully
[Nexus 5 Themes and Apps] impulse101:
The changes are small
[Nexus 5 Themes and Apps] fireproofrev:
[MENTION=4152171]myfluxi[/MENTION] [MENTION=3332811]faux123[/MENTION] [MENTION=3292224]franciscofranco[/MENTION]

With elemantalX you are still able to set the "wrong timing parameter" from francos "cooler colors".

I know this is not recommended because it is not made to change the colors but I gave it a try again.

I noticed:

With the wrong timing parameter and WP23 I get wonderfull saturated colors, it is REALLY PERFECT for me (like an HTC one or an amoled screen). I love it but there is an issue, the WP don't survive an screen off/on.

After you turn the screen off and on again you see the WP is back to normal (in app it still shows the customized value). When I click apply again I have the wonderful colors back. I know this "reset" comes from the timing parameter but because it is possible to set it by app there must be a coding possibility to have both settings (wrong timing parameter) and the customized WP all the time.

I don't think we can get good saturated results with the "normal" values without banding so it would be nice if some kernel developer or app devolper can combine these two settings.

This combination would be very awesome!! (I compared side-by-side with an HTC one screen and it is almost the same)
[Nexus 5 Themes and Apps] MrPhilo:
I tried searching but couldn't find anything.

Anyone else getting like pink or purple effects on videos and some images after changing some setting?
[Nexus 5 Themes and Apps] gpvecchi:
Which colorimeter do you have? I suggest to use HCFR free software, it's very practical...

I took another look on calibration: I assume that default was set in that way because first red value is 0, so you can't have a higher gamma for that color without a direct control to contrast and brightness. So other colors were leveled to that one...

If you're practical of calibration, LCDs acts differently from old cathodic: retroillumination brightness is almost uninfluent to a colorimeter, as the contact reading is affected by pixel brightness; brightness control tends to act to brighter parts of graph (in cathodic it's the opposite) and contrast to all curve (brighter parts with cathodic).

Now, I think that white point control is the brightness indeed. The biggest problem is the lack of contrast parameter. And obviously of level of colors to correct the yellowish/bluish/greenish color of a display.
[Nexus 5 Themes and Apps] rintintin78:
Hi,

which app do you use to see the ideal Gamma 2.2?

Thanks
[Nexus 5 Themes and Apps] L1lyksd@ddy:
Display Tester in the play store!
[Nexus 5 Themes and Apps] tkoreaper:
Changes for gamma are only seen after turning the screen off then back on. White point is the only exception to this.

I hate to be *that guy*, but this is clearly stated in the OP and it's annoying to have to answer this almost every page of this thread.
[Nexus 5 Themes and Apps] ganeshp:
wow just wow ..after all the gazillion settings I've tried ..I was unable to remove the yellow tint and i gave up and uninstalled the app too ..to prevent myself screwing up my display settings ..and for one last time I've installed it back ..to test your settings ..it is perfect ..completely matching my monitor and nexus 7 ...kudos to you ..I hope you do further digging and get some better values :D
[Nexus 5 Themes and Apps] hello00:
are this more saturated colors?
[Nexus 5 Themes and Apps] gpvecchi:
Guy, you're making some confusion... The pngs you posted are referring to color levels, that have nothing to do with gamma...

That is what makes your display yellow, gamma is what makes your display washed out. Correcting gamma affects color level, and vice versa, but it is not the solution for it. And vice versa...
[Nexus 5 Themes and Apps] markwebb:
Wow...seems like a lot of work when the actual apk file does the trick. All I was interested in doing was correcting the gamma so the colors weren't washed out and any yellow tinge was eliminated. The apk in this thread with the OP suggested settings did the trick for me and the colors pop with sufficient contrast. Again, thanks for your work...I think, but seems to be a lot of trouble... ::eek:
[Nexus 5 Themes and Apps] mag01:
[MENTION=4909585]gpvecchi[/MENTION] and others...

I'll get to the gamma next time. Since these settings allow for both gamma and levels adjustments I started with a simple example of how one can adjust the overall level of one color. As the main purpose of this thread is to find out how these settings work, that's what I'm trying to demonstrate - step by step.

Later today I'll finish adjusting levels and then will switch to gamma. It depends on free time...

I really want to show this whole adjustment process step by step so that whoever is interested can see how it works. Then some decent app (e.g. where you don't have to adjust 23 numbers for each color like here, but you'll have some simple controls for that) can be developed.
[Nexus 5 Themes and Apps] IIMaxII:
Fantastic your settings posted previously work like a charm. Can't wait to see your next few posts. I appreciate your work. I still don't understand what each row and column does, but I do understand calibration. :P
[Nexus 5 Themes and Apps] Patozandoval17:
Excuse me, when I start the app I need apply "Set on boot" Or NOT?

Enviado desde mi Nexus 5 mediante Tapatalk
[Nexus 5 Themes and Apps] shadowblade330:
Yes you have to then power off then power on your screen
[Nexus 5 Themes and Apps] Punkid:
can anyone post a before and after shot ? or a side by side comparison if anyone has multiple phones ?
[Nexus 5 Themes and Apps] spitefulrain:
There wouldn't be much point to this, as every display is different. You need to test the colors for yourself and find something pleasing to you. The same config on 2 phones would look different for both. Also taking a picture would further skew the results. Someone explained it better earlier in the thread.
[Nexus 5 Themes and Apps] Punkid:
yea i get your point but atleast it'll let people know HOW MUCH is possible with this...before and after on the same device would be a good indicator
[Nexus 5 Themes and Apps] bobby janow:
I've read through this thread multiple times but really can't find a few configurations to try other than in the OP. I wonder if we could just get some numbers to plug in to test and talk about other stuff in a general thread? I simply want to get that yellow out of my whites. (no not my laundry) Side by side vs an S4 the screen is ugly plain and simple. I want my cool blue!! So maybe 4 or 5 configs to try would be lovely. If I knew what I was doing I'd post some myself but I don't.
[Nexus 5 Themes and Apps] 0rigin:
Let us wait patiently for what [MENTION=5543250]mag01[/MENTION] comes up with, then I hope we'll gain some knowledge on how to achieve the desired effect on our screens...and then hopefully [MENTION=3332811]faux123[/MENTION] will implement some profiles in his future kernel releases. :D
[Nexus 5 Themes and Apps] bornoxt:
Until then the settings [MENTION=5543250]mag01[/MENTION] shared in his post are worth a try!

They look pretty good to me and are an awesome improvement to my screen. :good:
[Nexus 5 Themes and Apps] NYCguy2020:
Haven't seen Faux123 in this thread in a while now. I really hope he didn't forget about this project.
[Nexus 5 Themes and Apps] bobby janow:
Do you use the green values from the post alone? The post is confusing.. what do you set the values at?
[Nexus 5 Themes and Apps] kenkiller:
He's neck deep in kernel updates for all his supported devices....pretty sure this small project isn't a priority right now.
[Nexus 5 Themes and Apps] bornoxt:
Yes, I use these GREEN values:

And you've to check that the positive and negative values for the three colors are the same.

I'm not sure of they usually are because I played with mine before I came to these values.

Also I set the white point to 24 like [MENTION=5543250]mag01[/MENTION] mentioned in a previous post.
[Nexus 5 Themes and Apps] neriamarillo:
This looks very very good! Changed white point to 24 and using the green settings.. Wow. And to think its just the tip of the iceberg!
[Nexus 5 Themes and Apps] bornoxt:
Yes, it looks so much better as the original settings.
[Nexus 5 Themes and Apps] TrainNanpaMaster:
This man speaks the truth. Holy crap, this looks WAY better. Colors finally look much closer to the right shade, and closest thing to amoled contrast vibrancy I have seen yet.

Sent from my magical prancing unicorn.
[Nexus 5 Themes and Apps] fireproofrev:
Tried also these green settings with WP24 and the tint is far to reddish for me.

Best result for me and saturated colors still is the "wrong timing parameter" with WP23. Unfortunately if you set the wrong timing parameter (I do it on elementalX aroma installer, it still supports the "slighty cooler colors" from franco) the modified WP won't survive an screen off/on so it is no permanent solution. (in a side-to-side comparison it looks almost like an HTC one)

Hope that some kernel developer can implement a possibility to set both settings permanent.

Also already contactet flar (elementalX developer) he will check the possibilities.
[Nexus 5 Themes and Apps] TrainNanpaMaster:
Actually I completely agree with you. But seeing how this actually sticks after screen on/off, this is the best setting I've found to date that actually stays. The urine tint is gone, the blacks are crushed properly, and the whites aren't blindingly backlit bright. Contrast is nearly perfect.

Sent from my magical prancing unicorn.
[Nexus 5 Themes and Apps] bornoxt:
The settings from [MENTION=5543250]mag01[/MENTION] are maybe not perfect for every eye but they are way better than the stock settings and also IMHO better looking than the gamma 2.2 in the second post of this thread.

But I think there aren't THE best settings for everyone.

I like deep saturated colors and it doesn't cares if I have to turn the backlight higher.
[Nexus 5 Themes and Apps] mag01:
I'll try to work on it later today or sometimes during the weekend.

I performed some more tests 2 days ago and have got some output from them, but I need to finalize it.

There are a little tricky parts like the relative drop of red color brightness at around 100% gray level - the drop is quite big (at least on my display) and makes things harder to balance.

Another funny thing is quite big temperature dependence of color reproduction. It's normal that the color reproduction is temperature dependent (usually when you calibrate display you should let it run for at least 30 minutes to let these things to stabilize). But this effect seems to be stronger with this display. As the display warms up during long periods of use the red color level drops. When you cool it down (and you may really need just few degrees) the red color level increases again etc. Something similar happens with blue color (but to much lesser extent - here the strength of this effect is acceptable) - just the effect with blue is exactly the opposite (lower temperature - lower level, higher temperature - higher level). Green color seems to be the most stable.

It isn't that big problem when colors are quite off already (default setup for most displays), because the additional change to levels isn't that significant (relatively).

But when you want to balance the colors more accurately then this effect starts to make a difference.
[Nexus 5 Themes and Apps] richajax:
Thank you so much for the settings you already provided!!! :good:

Also thanks to the topicstarter!

I found the Nexus 5 screen so disappointing compared to my galaxy s3 that i almost retuned it :(

Happy now ;)
[Nexus 5 Themes and Apps] Fizwiz:
Good Work. To have more brillant color i play with the blue. I have now a real whit and color that Franco introduce in kernel Rev 14

Here is my setting.

RED: 0, 10, 17, 27, 37, 45, 56, 72, 83, 101, 112, 121, 128, 123, 117, 106, 91, 78, 68, 62, 53, 38, 22

GREEN: 81, 83, 85, 88, 91, 94, 100, 108, 112, 122, 128, 133, 118, 115, 110, 99, 85, 73, 64, 58, 50, 37, 21

BLUE: 76, 77, 79, 81, 85, 90, 97, 102, 105, 117, 120, 125, 120, 116, 110, 99, 84, 71, 61, 52, 40, 33, 20
[Nexus 5 Themes and Apps] SwayART:
I'd this for the negative also?
[Nexus 5 Themes and Apps] rintintin78:
Gamma white point?
[Nexus 5 Themes and Apps] Deusex74:
I tried mag01 settings and I am amazed.it looks much crispier.thanks for your work
[Nexus 5 Themes and Apps] GUGUITOMTG4:
I don't know if I could request this, but considering the "Please contribute!" by faux123. I think 2nd post on OP should be updated with mag01 settings as those are widely accepted/accurate for many.:confused:

To my surprise, I played with the app for like 3 weeks and ended up with similar settings as mag01
[Nexus 5 Themes and Apps] antisoma:
While I think these settings look fantastic they introduce unacceptable artefacts to photos on my device.
[Nexus 5 Themes and Apps] NYCguy2020:
These settings gave my screen a reddish tint even with 28 white point.
[Nexus 5 Themes and Apps] GUGUITOMTG4:
I would try to add 5 to each of these red values

RED: 0, 10, 17, 27, 37, 45, 56, 72, 83, 101, 112, 121 So, it would be RED: 5, 15, 23,........ 126. That will slightly reduce Red.
[Nexus 5 Themes and Apps] dbolot1:
So I was playing around with some of these values and here is my setup:

First red value for positive and negative 25

Last red value for positive and negative 47

White point 27

Everything else stock.

No scientific measurements or anything, just trial and error....

Someone please try it and let me know if it makes any difference or I'm just crazy :)

Edit: I did not have yellow tint to begin with or at least not one I noticed.
[Nexus 5 Themes and Apps] dbolot1:
Here is another set of values to try:

First red value for positive and negative 20

Last red value for positive and negative 45

White point 24

Not sure if these values at the edges screw anything up, but I haven't noticed anything yet
[Nexus 5 Themes and Apps] impulse101:
Doesnt work, makes all whites very pink
[Nexus 5 Themes and Apps] Chad_Petree:
I'm a bit confused, you left red and blue untouched, exactly with the stock settings and you just tweaked the green values? I should tweak the positive and negative values and have them have the exact same values, right? :confused:

Another thing, is the app not working with franco kernel r23? I hit the apply button, but as soon as I hit the back button or do a reboot my settings are gone, and yes I have the "set on boot" option on, even worse when I turn on and off the screen I see no perceptible changes :crying:
[Nexus 5 Themes and Apps] dbolot1:
Here are my new and refined (a bit) values for Red:

20

,

5

, 17, 27, 37, 45, 56, 72, 83, 101, 112, 121, 128, 123, 117, 106, 91, 78, 68, 62, 53,

28

,

45

(the underlined ones are the ones that I've changed)

the white point is

26

Green and Blue are stock.

Running Franko 23 kernel

The Display Tester app shows the gamma for all of the colors about equal around 2.6 (at least for me :) )
[Nexus 5 Themes and Apps] Chad_Petree:
How did you get it to work with franco kernel? My phone doesn't change the values and doesn't save them when I reboot :crying:
[Nexus 5 Themes and Apps] dbolot1:
Not really sure... It just works as it used to. Try reinstalling the app or make sure it has superuser permissions...easy way to check is to change the white point because it changes without screen off/on...maybe reflash kernel?
[Nexus 5 Themes and Apps] stumpy352:
This may appear to 'look' good to you, but by making the first value higher than the second, and making the last value higher than the previous, you clearly do not have a curve.

sent from beyond the neXus
[Nexus 5 Themes and Apps] Chad_Petree:
I reinstalled the app, still don't see a big difference after changing the values, white point does work, I can see the difference instantly and after a reboot all the settings are gone, do your settings stay after a reboot?
[Nexus 5 Themes and Apps] dbolot1:
My settings don't stay after reboot since I did not set it to stay on boot...

---------- Post added at 06:06 AM ---------- Previous post was at 06:02 AM ----------

I am fully aware that my curve is not the original bell curve, but have you tried these values? I've tested the settings with many images and everything looks pretty good. Try it
[Nexus 5 Themes and Apps] tomciopaluch357:
I just installed Nexus 5 gamma reverse engineering App and how do i open it or should i say how do i access IT, and just coupled days ago i was playing with it and i feel stupid i must be burned out 16hrs work a day is killing me, sorry guys.
[Nexus 5 Themes and Apps] dbolot1:
the app should be in your app drawer, its called N5 Gamma Calibration.
[Nexus 5 Themes and Apps] tomciopaluch357:
I don,t see N5 Gamma Calibration. checked 5 times installed twice and nothing ?

---------- Post added at 12:54 AM ---------- Previous post was at 12:49 AM ----------

I had it on Purity ROM and now I'm o latest Cataclysm , now i remember it took me 10 minutes to set it up ok but i guess there will be no answer why i don't see it.

---------- Post added at 12:57 AM ---------- Previous post was at 12:54 AM ----------

Maybe because i'm in ART ?
[Nexus 5 Themes and Apps] dbolot1:
I'm on stock and using ART, the app shows up just fine
[Nexus 5 Themes and Apps] GUGUITOMTG4:
checked settings/apps/Downloaded?
[Nexus 5 Themes and Apps] shantu:
My settings

After fooling around for quite a while, these are my settings -

(for both pos and neg)

Did not touch blue settings.

White point - 28

Display test result -

white - 2.2

red - 2.4

green - 2.4

blue - 2.3

yellow - 2.4

cyan - 2.2

magenta - 2.3

would still like to have a bit higher white value though :cyclops:
[Nexus 5 Themes and Apps] drms12:
Thank you! For me it looks better than the green only settings.
[Nexus 5 Themes and Apps] shantu:
Thanks for confirming that I have not gone color blind :D

I based mine on [MENTION=5543250]mag01[/MENTION] 's settings. So thanks to him for showing the way :):good:
[Nexus 5 Themes and Apps] neriamarillo:
Some banding going on with your settings unfortunately :( thank you!
[Nexus 5 Themes and Apps] 0rigin:
Yeah. I was trying to set white point to somewhere ~35, but then the gamma drops drastically and couldn't get it up to 2.2.... So I'm just gonna wait for someone with a more professional approach(someone who actually knows what he or she is doing), because this guessing game hardly leads anywhere...
[Nexus 5 Themes and Apps] shantu:
Was trying to look for the banding, but after updating kernel (chaos 7.1) I cant use this app for now :( the inputs are being overwritten by the NXTweaks). Will have to wait for an update to the kernel now :crying:
[Nexus 5 Themes and Apps] Sn00ky:
How can I get back to the stock values? Uninstalling the app does it? Thanks.
[Nexus 5 Themes and Apps] shantu:
Just disable set on boot and restart twice :)
[Nexus 5 Themes and Apps] Chad_Petree:
Quick question, I don't know if my values are being used, when I reboot my device and I open the app, I get the stock values, should it always show the values I tweaked? :confused: ; I'm under the impression that the app is not using the values I'm setting, I turn off and on the screen after I hit apply, but I see no visible changes , I only see changes when I change the white point for example
[Nexus 5 Themes and Apps] magnamentis:
2 things you have to do :)

you have to pay attention to whether you have checked the set on boot to tab which you probably did since it's obvious but:

you also have to apply each setting after typing in the numbers ( apply button below the settings )

so i usually choose the safest way and go through every tap and apply and after that go and toggle "set on boot off and on again"

like this i can say that i never had any kind of trouble for my settings to stick.

by the way if you click apply and switch of your screen and back on the settings should have been applied ( but not on boot, just for now )

given that they have big enough of an impact to be visible which is not always the case. to be sure you should download a display testing app

from the playstore, i.e. display tester :) :)

regards

Current Devices:

N7000, 4.1.2 Stock/TW

N7100, PacRom, 4.3.1, Pac Kernel

Nexus 4, PacRom, 4.3.1, Franco Kernel r199

I9100, OmniRom, 4.4.2, Gustavo_s CWM-Kernel, Xposed Framework

Nexus 5, Cataclysm ROM 4.4.2, Franco Kernel r24, Xposed Framework, Gamma 2.4<>2.5
[Nexus 5 Themes and Apps] shantu:
The changes are pretty small to be noticed directly, try any gamma measurement app like display tester, you can use the free version (there should be other such apps also) to check if there is variation on the changes. But if you have any other app or kernel module also trying to tweak the display setting, N5 gamma calibrations settings may be overwritten ( that is happening to me currently! )
[Nexus 5 Themes and Apps] Chad_Petree:
So I have to hit apply for every single value i introduce? For example maogs settings: GREEN: 81, then hit apply, then 83, hit apply the on to the next one until I'm done or should I change all the green positive values, hit apply, then proceed with all the negative values, hit apply and tun set on boot?

After a reboot , you open the app, what do you see? the numbers(values) you set up or do you see the stock values again??

Which kernel are you using? I'm using franco kernel 24, I don't if it tweaks the stock values and that's why I'm having issues. After a reboot , you open the app, what do you see? the numbers(values) you set up or do you see the stock values again??
[Nexus 5 Themes and Apps] magnamentis:
no

you can to that of course, no damage done :) :) but you do not have to do that.

as i wrote, you can do that when you have finished with all your settings at the very end, but the best will probably lay in the middle,

meaning you can use the apply button when you have finished typing in the settings of the actual tab ( i.e. red pos etc. )

and by the way, don't forget the thanks button to keep people motivated to help you :)

enjoy
[Nexus 5 Themes and Apps] Chad_Petree:
I did it, like you said , I set all the values for positive green, then I hit apply, then I set all the green negative values, hit apply and the I turned on the "set on boot" button, but I rebooted my device and as soon as I opened the app I noticed that it had the stock values , it doesn't show the values I set :crying:
[Nexus 5 Themes and Apps] gil80:
Hi there,

I would like to use your app but I need to update my kernel.

I'm running stock kernel and rom (unlocked and rooted) but I would like to stay with a stock kernel. What is the best kernel that can operate your APK and is the closest to stock kernel?

Thank you! :)
[Nexus 5 Themes and Apps] :
FRANCO kernel is close to stock