Hi
So let's take a break from pursuing after Lollipop and improve what we have
Well, many of us know that a report came out suggesting that 'blue light' emitting from screens of mobile phones, TVs, PCs etc is harmful to the eye and causes sleeping problems.
And then many apps started coming out which remove/filter the blue light from phone screens, such as Bluelight Filter, Dark Screen, Twilight etc.
These apps do what they say but :-
1) They don't do it perfectly
2) You have to manually disable them each time you install something or grant superuser access to an app
3) Few of them consume fair amount of battery
4) And some people may be annoyed by the fact that it always stays on the notification bar.
So here's another the way of removing the blue light without causing any of the above mentioned problems
The way is to change the kernel settings, rather the screen color settings by using kernel tweaking apps like Faux123, Trickster Mod etc which almost every custom kernel user has.
So open your kernel tweaking app and go to' Screen' settings or 'Screen Color' settings or whatever is there and just reduce the quantity of the blue color according to your preference
I have attached a screenshot of blue light being reduced using Trickster Mod app.
Don't forget to hit thanks if this helps
Thanks for the tip,
I've seen someone using bluelight filter app with his z3 compact, i couldn't figure why. Now i know. The screen of his phone looked pinky though.
Semseddin said:
Thanks for the tip,
I've seen someone using bluelight filter app with his z3 compact, i couldn't figure why. Now i know. The screen of his phone looked pinky though.
Click to expand...
Click to collapse
The screen becomes rather yellowish reducing the blue light
Meuuks13 said:
Hi
So let's take a break from pursuing after Lollipop and improve what we have
Well, many of us know that a report came out suggesting that 'blue light' emitting from screens of mobile phones, TVs, PCs etc is harmful to the eye and causes sleeping problems.
And then many apps started coming out which remove/filter the blue light from phone screens, such as Bluelight Filter, Dark Screen, Twilight etc.
These apps do what they say but :-
1) They don't do it perfectly
2) You have to manually disable them each time you install something or grant superuser access to an app
3) Few of them consume fair amount of battery
4) And some people may be annoyed by the fact that it always stays on the notification bar.
So here's another the way of removing the blue light without causing any of the above mentioned problems
The way is to change the kernel settings, rather the screen color settings by using kernel tweaking apps like Faux123, Trickster Mod etc which almost every custom kernel user has.
So open your kernel tweaking app and go to' Screen' settings or 'Screen Color' settings or whatever is there and just reduce the quantity of the blue color according to your preference
I have attached a screenshot of blue light being reduced using Trickster Mod app.
Don't forget to hit thanks if this helps
Click to expand...
Click to collapse
Which version of trickster mod did you use, i do not see anything related to screen settings in the version i have
Related
hi all, looking for a rom for my N7 that can change the display to only display red for when i use sky safari on it while out stargazing. (red helps protect night vision) on my nexus one with CM7 it has render effects settings screen where you can change the color of the whole os to basic colors etc. any roms out for the N7 that can do this globally as well? and before you say it yes sky safari has this feature inside, problem is unlock screen does not as well as say accidentally hitting home etc. one bright flash of white light and you loose dark adaptation for 5-10 even 20 min so its kind of important and most people go the easy simple route of putting red cellophane on their screens, but if i can get around that and i know its possible to i would like to.
Frito11 said:
hi all, looking for a rom for my N7 that can change the display to only display red for when i use sky safari on it while out stargazing. (red helps protect night vision) on my nexus one with CM7 it has render effects settings screen where you can change the color of the whole os to basic colors etc. any roms out for the N7 that can do this globally as well? and before you say it yes sky safari has this feature inside, problem is unlock screen does not as well as say accidentally hitting home etc. one bright flash of white light and you loose dark adaptation for 5-10 even 20 min so its kind of important and most people go the easy simple route of putting red cellophane on their screens, but if i can get around that and i know its possible to i would like to.
Click to expand...
Click to collapse
google skymap has a night view mode built in.
https://play.google.com/store/apps/details?id=com.google.android.stardroid
apparently sky safari has a night view mode built in also, look for it in the settings.
jptech said:
google skymap has a night view mode built in.
https://play.google.com/store/apps/details?id=com.google.android.stardroid
apparently sky safari has a night view mode built in also, look for it in the settings.
Click to expand...
Click to collapse
yeah sky safari has it, and it also has a setting to keep the device from sleeping because the problem is the lock screen and any other screen you might accidentally pull up will not be a dim red light and will instantly damage night vision if pulled up. anyways i rooted my N7 and took at look at a few roms and so far have not found one with this feature. looks like it was put into CM7 for the potential power savings due to the screen on the nexus one as well as many other phones being AMOLED. on tablets with LCD's theres no savings to be had so nobody's implemented it into a JB rom so far.
Tasker might do what you need. You make a profile to do things like dim screen brightness, change wallpapers, dim/kill LED notifications, etc. Set it to trigger when you open your Skymap app & your light sensor senses that it is dark (I don't know what that setting looks like).
This app has astronomers moder for the red tint.
https://play.google.com/store/apps/details?id=com.vito.lux
Sent from my Nexus 7 using xda app-developers app
Possibly the largest complaint I have with the Galaxy S2 is the screen color balance.
Im guessing they did this for the wow pop factor that is so common when you're shopping for TVs. Yeah, looks cool when you first see it, but after a while, its bugs you. Well, it bugs me. The AMOLED screen has insane contrast ratio.
So after some mucking about, I got the color balance the best I could get on my phone while still keeping the contrast ratio the same. I avoided filter apps such as Screen Adjuster. Its not perfectly balanced, but Its Waaaay better from how it is stock. My settings may not work for you, but will give you a starting point to tune yourself.
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Requirements:
1. Touchwiz Rom or AOSP like CM10.1/CM10.2 (Pretty much any ROM will work I think. I did this on CM10.1)
2. Dorimanx Kernel (Important, will allow you to do some fine tuning) http://forum.xda-developers.com/showthread.php?t=1617219
3. STweaks. This is to access the kernel features. On the latest kernel 9.37, this app wasnt included in the kernel. You can find it in the play store here: https://play.google.com/store/apps/details?id=com.gokhanmoral.stweaks.app&hl=en
-----------------------------------------------------------
How to: CM10.1/ CM10.2 (AOSP)
1. Go to "Settings"
2. Click "Advanced"
3. Go to "Screen" tab
4. Click on 'Mode"
5. Set the mDNIe Mode to "Natural"
6. Now open the "STweaks" app
7. Go to "Screen" tab
8. Uncheck "LCD REDUCE POWER"
8. Set "Blue Color scale" to 132
9. Set "Red Color scale" to 132
10. Restart Phone
11. Profit?
---------------------------------------------------------------
How to: Touchwiz
1. Go to "Settings"
2. Go to "Display"
3. Change the mDNIe Mode to "Natural". I don't know exactly how to get there; I haven't used a touchwiz ROM for over a year... I forgot. But its under Display... somewhere lol (if anyone can tell me how to get there, ill update the post)
4. Now open the "STweaks" app
5. Go to "Screen" tab
6. Uncheck "LCD REDUCE POWER"
7. Set "Blue Color scale" to 132
8. Set "Red Color scale" to 132
9. Check "mDNIe Sharpness Tweaks"
10. Restart Phone
11. Done.
----------------------------------------------------------------------------------
Now the screen settings may not be perfect for everyone. But you can tune it using the color scale. The goal is to make the grays too look actually gray. Tune it so there is no shade of yellow, blue, green or red.
I tried to match the gray present in the Messaging app on CM10.1. Worked for me.
All credits go to the Devs who made this possible.
Will this work on Apollo Kernel 4.9? stweaks descriptions says it's for siyah kernel only? I'm running Neatrom lite.
EDIT:
Using the Screen Adjuster filter, install button on application installation panel doesn't work. Hence not recommended.
I use check. Lcd reduce, and set blue to 123 in stweaks.
Screen set to standard. Natural look awful
Galaxy S2 powered by Dorimanx!
pulak.bhatnagar said:
Will this work on Apollo Kernel 4.9? stweaks descriptions says it's for siyah kernel only? I'm running Neatrom lite.
Click to expand...
Click to collapse
I havent tried that kernel. STweak works with any SII kernel that allows you to make some kernel tweaks. Its a frontend app.
mughalgxt said:
For those not geeky, staying away from rooting may try an app on playstore SCREEN ADJUSTER apk. Worth trying though the adjustments required in my case were very minimal, increased marginally blue, red, reduce brightness a bit and lower contrast.
Click to expand...
Click to collapse
I mentioned screen adjuster in my OP. Although it allows you do tune color somewhat, the major downside is that it decreases contrast and lights up black pixels. this can decrease battery life. But I agree, If you are staying away from Kernels, than it works okay.
bogdan1980 said:
I use check. Lcd reduce, and set blue to 123 in stweaks.
Screen set to standard. Natural look awful
Galaxy S2 powered by Dorimanx!
Click to expand...
Click to collapse
Nice. I Tuned the screen as close I can get to my Nexus 7 (2013). The i9100's screen is way supersaturated. But, I understand, to each their own
So, settings from first post is tuned to look like an nexus 7. Colors seems to pale forme then !!? I will try to set my s2 according to my Optimus g.
Galaxy S2 powered by Dorimanx!
Good post, but one problem with this is that although it fixes the greyscale, the whites still look awful at anything other than full brightness perhaps. There is still way too much green, and I suspect Samsung made it that way due to OLED degradation issues with the S2 having a RGB pixel layout.I managed to fix the whites by modifying the excellent Galactic Night app made by arpruss, however I had some SOD issues that I suspected had to do with the app so I gave up on it.
If someone is interested I've developed an App called "ColorModeChanger" to change saturation and color mode of AMOLED screens. You can visit this XDA thread: http://forum.xda-developers.com/showthread.php?t=3154845
Here is my settings.. RR 5.5.2 rom. This setting is for cm12 based ROMs and looks great.
Yellowish color screen after flashing arymod 4.0 or Flex_Lollipop Rev2.1, also tried 3 different kernels: LP_Xplorer_Rev1.7, darkqueen latest and perseo matergold. Still can´t get rid of this yellowish tint when the screen gets dimmer.
A photo would be good, I guess?
So you have only two options, either flash Stock ROM and have the display as it was, or you can use the app Screen Adjuster and turn up the Blue channel to neutralize the Yellowish effect. Remember, with that app you will just be masking the tint, not get rid of it, well not fundamentally.
devilsdouble said:
A photo would be good, I guess?
So you have only two options, either flash Stock ROM and have the display as it was, or you can use the app Screen Adjuster and turn up the Blue channel to neutralize the Yellowish effect. Remember, with that app you will just be masking the tint, not get rid of it, well not fundamentally.
Click to expand...
Click to collapse
Thanks for the help, I've also tried that app but the problem is if I neutralize at lower dim when brightness goes up the colors are messed up again. I´ll post screenshot.
I was going to post screenshot but it doesn´t show the problem and I don't have a secundary camera to take a photo.
xinfinityoO said to try and use synapse "Tip for the people with yellowish color hue
Go to synapse / screen and enable mdnie control , there you change the "Digital edge enhancement", try every sharpness value."
But color still messed up
Oh okay. Then you will have to ditch either the ROM or the kernel, I can't be sure which one is causing that (or maybe this is intentional), look for which one says stuffs about display tweaking, should be mentioned under the details of either the ROM or the kernel.
And screenshot won't capture that actually, a photo is needed, from a camera. Screenshots from all the Note 3 of the world will look all same.
devilsdouble said:
Oh okay. Then you will have to ditch either the ROM or the kernel, I can't be sure which one is causing that (or maybe this is intentional), look for which one says stuffs about display tweaking, should be mentioned under the details of either the ROM or the kernel.
And screenshot won't capture that actually, a photo is needed, from a camera. Screenshots from all the Note 3 of the world will look all same.
Click to expand...
Click to collapse
I thought there was way to upload a synapse profile or something that could neutralize this. Everything works like a charm and at high brightness there is no yellowish issue only when it's dimmer.
Oh Synapse, no idea mate, have stopped using that buggy piece of software a long time ago (no offence).
devilsdouble said:
Oh Synapse, no idea mate, have stopped using that buggy piece of software a long time ago (no offence).
Click to expand...
Click to collapse
It was actually my first time using it and only to try and solve this issue but did find it quite unstable.
I came across a weird issue: No matter what App I'm trying, all screen recordings have an orange hue. I've tested with DU Recorder, AZ Screen Recorder and Game Screen Recorder. The results I'm getting are all like this (recorded the play store - you know, that should be white and green):
https://streamable.com/2spod
Is there a solution for this issue?
Is there an app that does not record with an orange hue on the Axon 7?
(Apart from that, even when recording in fixed portrait mode, the videos always end up being horizontal. I'm looking for a solution for that as well.)
EDIT: The issue was not the color settings of the screen in "Screen effect" as I was assuming. Turns out the "Night Light" setting (set on always on) was the culprit.
I hope this info helps others running into the same issue.
When you're not recording can you see the orange hue? If yes, then it might be LiveDisplay or some other screen filtering app that reduces blue color. If not then I'm not sure.
No, I can't see the orange hue when not recording - but I found the solution. See original post.
Eiion said:
EDIT: The issue was not the color settings of the screen in "Screen effect" as I was assuming. Turns out the "Night Light" setting (set on always on) was the culprit.
I hope this info helps others running into the same issue.
Click to expand...
Click to collapse
What ROM are you on? It's odd as Night Light should be adjusting the colour of the display rather than the system interface. At least you could turn it off and use a third party custom kernel KCAL based colour mod like CF.lumen, Lux Auto Brightness or F.lux to name a few.
Infy_AsiX said:
What ROM are you on? It's odd as Night Light should be adjusting the colour of the display rather than the system interface. At least you could turn it off and use a third party custom kernel KCAL based colour mod like CF.lumen, Lux Auto Brightness or F.lux to name a few.
Click to expand...
Click to collapse
I'm on standard "ZTA A2017GV1.2.0B10".
Well, it's also odd that the recordings were a lot more orange than what to me still looked pretty white on the original screen. Anyways... I just turn it off before recording now and back on afterwards.
Thanks for the list of alternatives though - it might come in handy in the future with other ROMs or phones.
Eiion said:
I'm on standard "ZTA A2017GV1.2.0B10".
Well, it's also odd that the recordings were a lot more orange than what to me still looked pretty white on the original screen. Anyways... I just turn it off before recording now and back on afterwards.
Thanks for the list of alternatives though - it might come in handy in the future with other ROMs or phones.
Click to expand...
Click to collapse
maybe a bug on stock. Perhaps doubly orange as you recorded the orange and played it back with another layer of orange on top. Actually CF.lumen and F.lux don't require kernel KCAL but can rely on root as an alternative effect.
Sent from my ZTE Axon 7 using XDA Labs
Infy_AsiX said:
maybe a bug on stock. Perhaps doubly orange as you recorded the orange and played it back with another layer of orange on top. Actually CF.lumen and F.lux don't require kernel KCAL but can rely on root as an alternative effect.
Sent from my ZTE Axon 7 using XDA Labs
Click to expand...
Click to collapse
No - I even moved the file to the PC and it was the same intensity there, too... though it would have made sense considering it was recorded in the first place.
I'm not planning to root the device - as long as there's hope for an update from ZTE (which hopefully will come soon).
I don't have the option to do that by the way
There are 2 methods for blue light filtering:
Apps that recalibrate the display via KCAL. These require root access and usually give better results in terms of color reproduction because they can adjust backlight (for LCDs) and gamma. Not all displays support recalibration, though, and some ROMs may not have KCAL support built in. Recommended: Night Light
Apps that draw a darkening overlay. Root access is required to draw over the status bar, hide the overlay on screenshots and keep sensitive tasks (like confirming an app installation) working when the filter is active. Works well especially on OLED displays. Mildly reduces color quality because less than 256 steps of brightness will be available for the color channels you dim. Recommended: Red Moon
There is no harm in trying either app, they are both open source. They don't apply permanent changes so you can just uninstall them if you have issues. Check if you can add the app to drop-down system shortcuts for convenient control.
Václav Trpišovský said:
There are 2 methods for blue light filtering:
Apps that recalibrate the display via KCAL. These require root access and usually give better results in terms of color reproduction because they can adjust backlight (for LCDs) and gamma. Not all displays support recalibration, though, and some ROMs may not have KCAL support built in. Recommended: Night Light
Apps that draw a darkening overlay. Root access is required to draw over the status bar, hide the overlay on screenshots and keep sensitive tasks (like confirming an app installation) working when the filter is active. Works well especially on OLED displays. Mildly reduces color quality because less than 256 steps of brightness will be available for the color channels you dim. Recommended: Red Moon
There is no harm in trying either app, they are both open source. They don't apply permanent changes so you can just uninstall them if you have issues. Check if you can add the app to drop-down system shortcuts for convenient control.
Click to expand...
Click to collapse
thanks