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My GN screen like yellow when I show a white photo.I'm using a kernel who name is franco.
It looks better now.But, is it the only way to fix the screen problem?
Are there any better ways to fix the screen prolbem? I don't want flash this kernel just fix the GN screen problem.
If you didn't root your phone, just serch Screen Adjuster in market. adjust grey balance. it will be better. but you need to turn on manually every reboot.
the problem same as me, but I solved after root and adjust. pls see:
http://forum.xda-developers.com/showthread.php?t=1521195
Tips: wrote by me on Page 18
http://forum.xda-developers.com/showthread.php?t=1521195&page=18
8723045587230455 said:
My GN screen like yellow when I show a white photo.I'm using a kernel who name is franco.
It looks better now.But, is it the only way to fix the screen problem?
Are there better way to fix the screen prolbem? I don't want flash this kernel just fix the GN screen problem.
Click to expand...
Click to collapse
Are you using the franco.kernel app? Because it has color adjustments built in.
A lot of the Roms have that build in now as well.
AOKP and CM9 both actually default your color multipliers HIGHER than normal...resulting in a more vibrant screen. I don't know about the others.
So just flashing the kernel may seem to improve it...but it's actually a setting that is being changed by the rom.
For AOKP it's under Rom Control>Performance>Color Multipliers.
Hit the "default" button there...and it will restore to actual defaults.
As far as fixing without a kernel that allows color control...I don't think you can.
If it's that bothersome and you don't want to flash a kernel: replace the phone.
I think most (all?) of the modern kernels have color control enabled in them anyway. So if you're going custom; you might as well stay put with your device.
Yes,I'm using franco kernel app.And set color values.
WiredPirate said:
Are you using the franco.kernel app? Because it has color adjustments built in.
Click to expand...
Click to collapse
Yes,I'm using franco kernel app.And set color values.
Well, after 5 months of looking out for the best values, I've experimented and all and found out these to be the best. Even at lowest brightness, the screen is crisp and clear just like it's supposed to be.
People who have the Purple Screen issue, I highly recommend you use these values.
Requirements -
1. Franco Kernel Updater (TKT wouldn't give that much brightness/crispyness to the screen)
2. ICS Gradient Fix (Check Signature)
3. Franco Kernel
First up, flash Franco's latest kernel.
Secondly, make sure you don't have any 2 or more applications which have Color Control options (Like, Franco Kernel Updater and TKT - Remove TKT and stay with Franco). If you do have 2 or more installed, please set all values to default on all applications including Franco's. (In TKT, click on menu and select reset preferences and reboot).
Third, fire up Franco Kernel Updater and get to the CC options and set these :
Color Multipliers -
Red - 280
Green - 292
Blue - 350
Gamma -
Red - 4
Green - 0
Blue - 9
Disable Contrast Adaptive Brightness - Yes (Tick)
Contrast Control : -24
OMAP Gamma - 1.2
These values work BEST with MoDaCo's JB Build. Tested on Jr1, Jr.1.1, Jr2.
Please note : This is simply a band aid, not a total fix. The purple screen and grain issue is probably a hardware issue. This settings are extremely crisp on my device. You need to get adapted to them.
Thanks to -
1. Franco for his amazing kernel and application.
2. Morfic for introducing contrast control into the kernel world and of course for his kindness. (You're the sweetest developer I've talked to).
Best of luck with these settings guys!
Please, don't forget to click "Thanks"!
It made everything look over-saturated for me.. plus, is it safe to jack up the settings like this?
It did improve the grainy screen on low brightness problem, though.
Well, i think the best values i've EVER Seen.
Oh dear, so f****ng awesome.
via Google Galaxy Nexus
Made my eyes hurt.. Too cold.. I'm trying to get my screen as close to 6500k as possible.
Sent from my Galaxy Nexus using Tapatalk 2
Thank you for this! By far the best optimization of colors I've ever seen. Maybe colors are a bit over-saturated but thats how Super AMOLED should produce.
Doesn't lacking the values up that high create burn in???
Sent from my Galaxy Nexus using xda premium
craigbailey1986 said:
Doesn't lacking the values up that high create burn in???
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Try reducing every multiplier value by 40. 280 to 240, 292 to 252 and 300 to 260.
This can never be an all-in-one "fix" because of the way screen technology works. Everyone's screen will have different degrees of the problem itself (purple tint & grain), on top of that they will all have a slightly different color temperature, contrast level, saturation etc. By providing the values that worked for you, you're just going to have a thread where half the people think it looks great, half think it looks awful, and everyone thinks everyone else is crazy.
A better idea might be to describe the steps you took to arrive at your own numbers, things you looked for, how you tweaked them to get to the best values.
Look Excellent to me - Screen absolutely Pops, so vivid and the gradient issues are not visible.
Thanks so much!
Those high values are gonna kill your screen
OP settings work well for me (similar to my 200 215 280, -2 0 10, -23, CAB off), but OMAP always makes things worse IMO. With OMAP at 1.2 I instantly see banding again where with it off the gradients are smooth. OP settings with OMAP 1.0 are excellent however, reducing the magenta and yellowing I was seeing with my others. I am worried about the burn-in though..
What's this about burn in? Do these settings cause it?
I sort-of mispoke. Burn-in is possible, but high multipliers are more worried to wear out those pixels/degrade them faster.
Edit: I'm going for more of a "Trinity Blue" sort of solution now: 215 235 280, -2 0 15, -24, CAD off, OMAP unset. Still trying to find that balance that gets rid of the magenta/yellow at all points.
Okay guys try out 180,192 and 250 as the color multipliers. No burn issues then. I'm on it right now. Its great!
I'm using Trinity kernel, TKT, and Display Tester Pro for calibration. The gamma test shows that my particular settings should be red=2, green=3, blue=2. The color gamma settings are not relative to one another and are not "mixed together" for adjusting color. Each one is a separate adjustment for that color's correct level of brightness for midtones, relative to darkest and lightest levels. Together, the three settings add up to correct gray brightness levels, not to correct gray colorlessness.
If you look at a chart containing only black, 50% gray, and white, the color multipliers should be adjusted to remove any trace of color tint from the gray. The easiest way to do it is set the weakest color to 200 and reduce the other two colors until the gray has no color tint at all. The properly set color gamma settings, on the other hand, should make the 50% gray have the correct lightness level.
If you have yellow tint, there's not enough blue. Magenta tint means not enough green. Cyan tint, not enough red.
The color multipliers, unlike the gamma settings, are relative to one another. Once you have them set correctly relative to one another, moving them all up or all down together pnly changes the overall brightness of the display. The wrong overall brightness level will remove detail from either the black end or the white end. Too much brightness is also bad for the screen, not to mention battery drain.
So anyway I'll shut up now and I hope everyone gets their screens looking perfect.
gsm gnex / cm9 / trinity / 1420 MHz
for whatever reason trinity seems to be giving me better screen color, but im sure I could do the same with franco, anyways, my gamma settings are untouched, I found that modifying the color to these values makes the purple tint go away for me:
Red:135
Green:135
Blue:190
Trinity Contrast -15 to -25
Have you tried adjusting it for 18% gray? I can nail it pretty close with 180,150,190 and 8,0,8 but gamma is a complete ***** on this display...
strumcat said:
I'm using Trinity kernel, TKT, and Display Tester Pro for calibration. The gamma test shows that my particular settings should be red=2, green=3, blue=2. The color gamma settings are not relative to one another and are not "mixed together" for adjusting color. Each one is a separate adjustment for that color's correct level of brightness for midtones, relative to darkest and lightest levels. Together, the three settings add up to correct gray brightness levels, not to correct gray colorlessness.
If you look at a chart containing only black, 50% gray, and white, the color multipliers should be adjusted to remove any trace of color tint from the gray. The easiest way to do it is set the weakest color to 200 and reduce the other two colors until the gray has no color tint at all. The properly set color gamma settings, on the other hand, should make the 50% gray have the correct lightness level.
If you have yellow tint, there's not enough blue. Magenta tint means not enough green. Cyan tint, not enough red.
The color multipliers, unlike the gamma settings, are relative to one another. Once you have them set correctly relative to one another, moving them all up or all down together pnly changes the overall brightness of the display. The wrong overall brightness level will remove detail from either the black end or the white end. Too much brightness is also bad for the screen, not to mention battery drain.
So anyway I'll shut up now and I hope everyone gets their screens looking perfect.
gsm gnex / cm9 / trinity / 1420 MHz
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Click to collapse
arzbhatia said:
Okay guys try out 180,192 and 250 as the color multipliers. No burn issues then. I'm on it right now. Its great!
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Click to collapse
It's been discussed few times already - going above 200 can lead to screen burn in. On SAMOLED screens blue color wear out first and peeps really shouldn't touch this setting. Better set lower red/green values. Screen will look a bit darker so don't cranck up contrast too much, -10 should be good enough.
herzzreh said:
Made my eyes hurt.. Too cold.. I'm trying to get my screen as close to 6500k as possible.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
look at the graphs.
http://forum.xda-developers.com/showpost.php?p=29037317&postcount=1
herzzreh said:
Have you tried adjusting it for 18% gray? I can nail it pretty close with 180,150,190 and 8,0,8 but gamma is a complete ***** on this display...
Click to expand...
Click to collapse
You can see where your gamma should by by installing the free version of Display Tester from the Play Store. Go to Color, Gamma, and slide the gray screen to the left to see the red page. Find the vertical bar that most closely matches the red bacground. The number on that bar is where your gamma should be set for that color. Mine is spot on at 2.3. Then slide to green page and do the same. Then the blue page. My green gamma reading is 2.8, meaning it isn't quite as bright as the red or blue, so I have to turn it up a hair. My blue is good at 2.3. The adjustment sliders in TKT only give me whole-number choices, so I get as close as possible with 2, 3, 2. I'm just guessing there, since TKT doesn't have normal gamma increments. Anyway good luck taming your gamma.
galaxy nexus (gsm) / cm9 / trinity @ 1.4GHz
So I just bought a 10 again after my previous one died. I've noticed that the colors on this display actually fluctuate in terms of accuracy/richness.
For example, on the homescreen - icons like WhatsApp, Hangouts etc are all very light green, instead of the dark green logo they originally have. Similarly, the Quora app (originally deep red/burgundy) is actually very light red.
I know this is an issue because the display corrects itself and renders colors correctly if I open apps. For example, on opening WhatsApp - i can see the colors transition from light green to dark green over the course of a few seconds. The color reproduction is fluctuating again and again.
Since it is fluctuating, I don't think changing/tweaking settings from the Display menu will help. But is there anything else I can do? Maybe turn some settings off?
Or should I return the device?
Better return a device
Gpu may be corrupted
You may try elemental X kernel and change colour settings to check wheter it stays
jhakjhuk1853 said:
Better return a device
Gpu may be corrupted
You may try elemental X kernel and change colour settings to check wheter it stays
Click to expand...
Click to collapse
It is actually a 10 Lifestyle, so the kernel will not work. I'll just return it/take it to the service center then.
Do you have problems with auto brightness in MIUI roms? Your screen brightness gets extremely dark in low light conditions, or the brightness spikes just with a few increase of light?
For low brightness problem, actually you can adjust the minimum autobrightness in slider bar, but sometimes it will reset back to default minimum brightness. For example if you turn off auto brightness in game, when you turn it on again, it won't resume your settings. As a result the screen will get darker than your adjustment.
I created magisk module to fix that. This will increase the minimum brightness in low light, and also reduce the over brightness in medium and high ambient light. The result will be smoother auto brightness step, and be more convenient for your eyes!
There are two modules, one for Miui 10 running Android Pie, and the other ones for Miui 10 running Android Oreo. Dont install wrong module, because there are much more brightness values in Android P than O.
The Oreo version may be not as good as Pie version, because i tested it in Redmi Note 5. My Mi Mix 2s currently running Miui 10 P beta 8.8.16 for Pie version testing. But it should give the same result. Oreo version works in Miui 9 too, but may results different.
So what this module do? It adds framework-res to the /system/media/theme/default. With a magisk module you can do it systemlessly! To install it, just download the module then browse it in Magisk Manager.
If you dont like my setting values, just unzip my module, find framework-res file, unzip it, then edit the theme_values.xml to any values you want under "config_autoBrightnessLcdBacklightValues", then zip all back.
Download links in attachment.
Guide:
V1 for lowest brightness (best battery)
V2 for a bit brighter in low light
V3 for brighter brightness (best for full edge cover tempered glass user)
V4 for more responsive and smoother auto brightness. Values are about similar to v3.
To check if this module works;
Tap the Kernel Version in About Phone 5 times, then you will enter CIT. Go to Light Sensor. Cover your phone light sensor on upper bezel (lower for Mi Mix 2s) with your palm till the light sensor value reach 0. If the backlight is not going under 100/130 (pie) or 7 (oreo), then this module works! My module limits the minimal auto brightness, which the original can reach to 20 which is ridiculously very dark.
This module may work on any MIUI-based rom phones with IPS display, not just Mi Mix 2s.
I also created this module for Mi 9 (amoled display). Visit my thread HERE
Notes:
- Only V4 has responsitivity adjustment. More responsive means it needs less light increments to trigger auto brightness adjustment.
- Editing the values can cause a mess. Add .disable_magisk file in cache partition if your phone cant boot then uninstall the module in manager.
Thanks have flashed this and will see how it goes over a day/night. Initially it's good though.
I find the auto bright annoying sometimes especially given how easy it is to cover the bottom chin sensors on this phone.
M.
mattman83 said:
Thanks have flashed this and will see how it goes over a day/night. Initially it's good though.
I find the auto bright annoying sometimes especially given how easy it is to cover the bottom chin sensors on this phone.
M.
Click to expand...
Click to collapse
Thanks for trying. I hope you get better auto brightness experience after a day..
Yeah the worst part is the light sensor in mix 2s located in bottom left where you could get the screen unseenable while using two/left hands. If its in center, it would be better.
My other mi phone with forehead light sensor often gets annoyingly too dark. I never satisfied with miui default auto brightness and always use this mod since miui 7. Fortunately, this method still works with some adjustment in value.
Ok so it's been a couple of days and this has helped a lot imo at least for indoors (haven't really had any major outdoors time...).
Still gets dark enough when it's really dark, but certainly for normal indoor conditions the default settings you have are much better. Xiaomi settings often got too dark, and you can adjust the slider, but then the slider goes back after while anyway :-\
M.
Just reporting back after a while with this and more miui updates, seems the later beta builds have changed something in the brightness in that I don't know if this mod works any more, or if it needs tweaking to provide the same brightness levels it used to.
I had a really quick play with values as suggested in the op but it's well outside my field of expertise and couldnt get it to do much different
M.
@arddy1
... where to find the default values ?
I'm on Poco F1 and want to compare to the default values and adjust theme_values.xml
mattman83 said:
Just reporting back after a while with this and more miui updates, seems the later beta builds have changed something in the brightness in that I don't know if this mod works any more, or if it needs tweaking to provide the same brightness levels it used to.
I had a really quick play with values as suggested in the op but it's well outside my field of expertise and couldnt get it to do much different
M.
Click to expand...
Click to collapse
Sorry for late reply. This mod still works in miui 8.10.11 global. Here are the screenshots of screen light value in lowest brightness. The lower one is the original. Mine still brighter in lowest light.
der_Kief said:
@arddy1
... where to find the default values ?
I'm on Poco F1 and want to compare to the default values and adjust theme_values.xml
Click to expand...
Click to collapse
Here's the screenshot from framework_res in rom 8.10.11 global
So it only works on miui
Yes since it's a miui issue. Stock android roms don't reset brightness like miui.
Stock roms just set the brightness bar where you want, some will have the ability adjust the total curve even. Miui if you raise brightness it will change itself back after 5 mins or so, so it's needed to change the system default values
M.
mattman83 said:
Yes since it's a miui issue. Stock android roms don't reset brightness like miui.
Stock roms just set the brightness bar where you want, some will have the ability adjust the total curve even. Miui if you raise brightness it will change itself back after 5 mins or so, so it's needed to change the system default values
M.
Click to expand...
Click to collapse
To me it happens on the treble roms. Exactly as in miui.. might be a vendor thing idk
Can I use this on Vince running Resurrection Remix 6.2.1 Android Oreo? I am having auto brightness issue in custom ROMs too.
Shubhambora said:
Can I use this on Vince running Resurrection Remix 6.2.1 Android Oreo? I am having auto brightness issue in custom ROMs too.
Click to expand...
Click to collapse
No, its for miui only. Even using it on miui other than i specified in first post may not work
Can you check with the latest miui 8.11.15?
I'm currently using this but sometimes the brightness still jumps from dim to bright
Thanks for this fix!
Can you make flashable zip version via TWRP recovery? I don't use Magisk and I don't want to be rooted
Sent from my MIX 2S using Tapatalk
Max auto brightness level can be increased from current value?
From 4095 to 4500
It would better in sunlight
Sent from my MIX 2S using Tapatalk
hi any chance to have it without root?
graw2 said:
Max auto brightness level can be increased from current value?
From 4095 to 4500
It would better in sunlight
Sent from my MIX 2S using Tapatalk
Click to expand...
Click to collapse
No. 4095 is the max value.
H0unter said:
hi any chance to have it without root?
Click to expand...
Click to collapse
Yes you can. As long as you unlock bootloader and place the framework-res file in system path i mentioned in first post with twrp
I tried your auto brightness fix. And surprisingly it seems to work on the Mi Max 3 with xiaomi.eu 8.12.6v2 as well.
palmdude said:
I tried your auto brightness fix. And surprisingly it seems to work on the Mi Max 3 with xiaomi.eu 8.12.6v2 as well.
Click to expand...
Click to collapse
Agreed, on 8.12.13 xiaomi.eu (pie) Mi Max 3 it works very well. Thank you for your efforts OP.
What's your lcd display?
1) dial *#*#64663#*#*
2) Version Information
3) Check under "TP:"
Mine is EBBG
Also, is there a way to adjust color temperature? I wish we had the color temperature settings for warm or cool displays
EBBG, too.
I like having on the night light mode all the time. I don't like the blue color all phones have.
Same here and I also think it's a little bit cold. But having night mode on all the time? Way too warm for me....
I had this also and my colors here is somehow slightly warm compared to my xperia z lcd
rfkd said:
Same here and I also think it's a little bit cold. But having night mode on all the time? Way too warm for me....
Click to expand...
Click to collapse
You can set the intensity. It's better for your eyes (or that's what they say). And you get used to it in a few hours But it's personal preference.
adriakus said:
You can set the intensity. It's better for your eyes (or that's what they say). And you get used to it in a few hours But it's personal preference.
Click to expand...
Click to collapse
How to set intensity?
Just go to settings/display/night light. There is a slider there.
I also placed a shortcut in the quick tiles so I can turn it off if I want to and get to the slider.
If you get root and Kernel Adiutor, (maybe necessary to flash new kernel), you can set through kernel native RGB, saturation options, etc. It's called KCAL color calibration. There are posts at xda with even different profiles (think like 'how to turn lcd into amoled'). I don't have the A2, but since reviews complain about blue tint and lack of display calibration as in MIUI I thought this could be the solution for AO.
I also complain from this ****, I compred color temperature to my friend's phone (with miui)
And I found a huge difference in color temperature!!