LED notification light on poco - Xiaomi Poco F1 Questions & Answers

Is the LED only white in color? Or is it a RGB led?
I can't change the lighting even in lightflow.

It's white only - can change the pulse rate, perhaps the pattern too (per app) but I'm not sure

Inside kernel is set to white, no idea yet if it can be enabled there.

melodystyle2003 said:
Inside kernel is set to white, no idea yet if it can be enabled there.
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I'm pretty sure that the led is only capable of producing white light - this was one of the cost savings vaunted around the time of launch which allowed the low price point

Related

Color temp changing in browser

Is it normal that my color temperature seems to be changing when I'm in the browser. I notice it the most in there due to the white background. I'm running serendipity 8 but noticed before this. I'm not running the dynamic screen mode. Only the standard. Is this related to the auto brightness? Haven't tried disabling it yet but this color change is quite annoying as it goes from like cool to warm colors.
nh5 said:
Is it normal that my color temperature seems to be changing when I'm in the browser. I notice it the most in there due to the white background. I'm running serendipity 8 but noticed before this. I'm not running the dynamic screen mode. Only the standard. Is this related to the auto brightness? Haven't tried disabling it yet but this color change is quite annoying as it goes from like cool to warm colors.
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I'm getting the same on stock rooted. I think it's related to auto-dim because it's at 15 seconds, which is what my auto-dim is set to. Did you time it and verify the same for yours? Not sure why it doesn't just dim like past models, but goes to gross 1970's TV looking color haha
I believe you can adjust browser brightness aside from you regular screen brightness. When you bring up the browser again, look under setting and you will see "browser brightness"...let me know if that helps.
kezell said:
I believe you can adjust browser brightness aside from you regular screen brightness. When you bring up the browser again, look under setting and you will see "browser brightness"...let me know if that helps.
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The browser auto brightness toggle is jenky... when set to auto its when it kicks to low brightness the colors go warm yellow. If set to manual just above that point it disables the rest of the OS's auto dimness and the whole android is too bright dohh.
Color Temp of Browser
Is this just in your browser or does it show up on all white backgrounds? I thought my screen was defective because it would change color temperature with the backlight but the real culprit was that setting under Settings | Display which automatically checks the image being displayed and adjusts it to save battery power... I don't have the phone with me right now so I can't give the exact wording of the option, sorry.
toyfreak said:
Is this just in your browser or does it show up on all white backgrounds? I thought my screen was defective because it would change color temperature with the backlight but the real culprit was that setting under Settings | Display which automatically checks the image being displayed and adjusts it to save battery power... I don't have the phone with me right now so I can't give the exact wording of the option, sorry.
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Seems most noticeable in the browser because it is the only thing with a white background.
I see this problem mainly using the xda app... I will scroll and as I'm holding down on the screen, it will be sliiiiiightly pinkish... then as soon as I let go and the screen is static, it reverts to a cool blue... very slight

Possible to make the screen even dimmer?

Running ViperRez. Is there a way to make the screen any dimmer than the current lowest setting? . I find it is still too bright at night.
texanaustinite said:
Running ViperRez. Is there a way to make the screen any dimmer than the current lowest setting? . I find it is still too bright at night.
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I remember it getting quite dim but you should search for a mod or script.
This should be in the Q&A Section though, not development. Happy searching.
Sent from my HTC Rezound using Xparent Red Tapatalk 2
get yourself an app like notification toggle or do it manually in brightness settings. automatic brightness isn't great cause it's always checking light levels every to confirm if brightness needs to be increased or decreased. notification toggle will allow any percentage and as many levels as you want. I use 10,15,20,25,40,50 and 100
youre gonna want to get this app https://play.google.com/store/apps/details?id=com.haxor&feature=nav_result#? t=W251bGwsMSwxLDMsImNvbS5oYXhvciJd. its free and it works perfectly and you can make it as dim as you want, even to the point where you cant see the screen on at all, i used to use it to text at night all the time. It also should save your battery, i could go two plus hours screen on time on wifi and be in the high 70s for battery on my inc 2
Quicker. It has screen dim in it. I use it every night.
xxtsxx said:
youre gonna want to get this app https://play.google.com/store/apps/details?id=com.haxor&feature=nav_result#? t=W251bGwsMSwxLDMsImNvbS5oYXhvciJd. its free and it works perfectly and you can make it as dim as you want, even to the point where you cant see the screen on at all, i used to use it to text at night all the time. It also should save your battery, i could go two plus hours screen on time on wifi and be in the high 70s for battery on my inc 2
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This works perfectly! Thanks for the help.
I use screen filter too, but keep in mind that it only draws a dark overlay on your screen to let out less light. The LED back light is still at the same level, but less light escapes. So, it really doesn't help your battery since we don't have AMOLED screens.
Chainfire 3D has a "Night Mode" filter if you want to give that a try too: https://play.google.com/store/apps/details?id=eu.chainfire.cf3d
The free version currently has a red-, green-, or blue-only RGB channel filter, as well as Amber and Salmon colored filters. You can fully adjust the RGB values of the filter in the Pro version.
Oddly, there is no "balanced coloring" grayscale filter. Would need to use the previously mentioned app or buy the Pro version and adjust the RGB values equally.
Fun to try out at any rate.
I use Lux. It allows you to reduce screen brightness to completely black and unreadable. I don't know but I don't think it justs adds a transparent black overlay to make it look darker. It seems to actually adjust the brightness below the minimum allowed without the app. Here's a link to it in the market (there is a paid and free version) https://play.google.com/store/apps/...ps#?t=W251bGwsMSwxLDEwOSwiY29tLnZpdG8ubHV4Il0.

Second Screen dimming

Just got the V10 and the second screen dims after 2 or 3 seconds after turning off the main screen. Is there a way to adjust the timing when the second screen dims? The dimmed second screen is almost unreadable because it is so dim.
Ditto, the idea that this is a replacement for a notification LED is really damaged by the dimming. (It's not just me that bought the phone based on that idea, right?) What I've found so far:
With the screen brightness set to 0, the second screen dims fully a few seconds after sleeping. Icons become about as noticeable as dust reflections.
With the screen brightness set to 100, the second screen follows the ambient light sensor after sleeping. Under bright light it turns itself up to the point where it's useable.
I've been playing with all the LEDs that Light Flow sees, but at least without root, nothing has any effect. I might look through the /sys files later. We probably need to get root first to figure this out.
On auto brightness it seems to be that the device adjusts the dimmed display for the ambient lighting? It's not the easiest thing in the world to see, but it's certainly not hard for me to see what notifications I have. I really prefer this over a colored LED.
Light Flow settings
For what it's worth, here's my current setup, now that the T-Mobile H901 is rooted. This does no one without root any good, and I don't know how it would translate to similar LED managers. I've been using Light Flow since the Sapphire (MyTouch 3G).
Light Flow device settings: check direct mode, root mode, and run every command as root. The Nexus 5 force reset option is checked by default and I don't know if that's relevant (no calls yet). Everything else in the menu is unchecked.
Let Light Flow control lcd-backlight-ex.
In a notification, set that "LED" to Solid and to 255 brightness. Check Enable Mixer and App controlled flash. With that last setting, the app will reset the brightness every few seconds even if the system dimmed it due to an ambient light change.
Now I need to edit some notification icons to be big and colorful. I wonder how this will impact battery life? Now the app is going to be awake all the time.
I've noticed that today on auto brightness the second screen will increase in light but not much. It also is not as smoth of a transition as on main display. It kinda jumps up real quick..
Yes for me I've noticed on Auto brightness the second screen will dim in a dark room and if you turn off your phone while in that room then come out... The second screen is still dim.... It's like th second screen doesn't respond to the light sensors at all unless the main screen is on.
Sent from my LG-H901 using XDA Free mobile app
It would have been nice if lg included the capability to change the second screen settings such a brightness or text color.
m0n0t0ne said:
It would have been nice if lg included the capability to change the second screen settings such a brightness or text color.
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Another one of many things that it would be cool to see baked into a custom stock rom. Good stuff. I wonder if Cloudyfa might come over and cook on this awhile. I have always loved his stock Roms....
Sent from my LG-H901 using XDA Free mobile app
m0n0t0ne said:
It would have been nice if lg included the capability to change the second screen settings such a brightness or text color.
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Color would be cool. A classic CRT bright/lime green, for instance, would probably show up much better than the white.
We need to get on their forums with these ideas. Maybe some will get squeezed into an update
An app which turns off auto dim in case screen is off would be pretty much help. Maybe I'll develop one.

Black displays are not completely off

Yesterday night I noticed that black pixels do not switch off completely on my phone. (as they should on AMOLED, right?)
Try it this way:
Set your screen brightness to almost a very low value.
Now look at a picture which has a black background and very little color in the middle etc. The room has to be dark, otherwise you wont see a difference. (You can also cover your had with a blanked etc., just wait a moment, so your eyes get used to the dark environment).
Hide the statusbar, navbar etc., so only your picture is shown (Tap on the picture once in Google Photos).
When you disable your lockscreen and switch the display on and off a few times you'll see that the picture vanishes first and than the display goes completely dark. It looks like a very light yellow back-light.
Another way:
Again in dark environment power off your phone. Switch it back on and watch the bootlogo. The surroundings (everything that's black) is truly black and "switched off" and than some secs before completing boot the "back-light" switches on.
I tried to find a solution for that. The only thing I found is a setting in Kernel Adiutor named "Minimum RGB value" under the screen section which is set to 35. However lowering it to 0 does not work, the value get reset to 35 every time (Higher value does not change anything either tho).
I'm running Oxygen OS 2.2.0 with bluespark kernel + root + xposed (Gravitybox + XInternalSD)
maybe the black is not that black?
edit: just tested with fullhd resolution black picture and red dot pixel in centre(PNG file, not jpg nor bmp) and everything is working as intended - black is pitchblack(same as when u just block/shutdown ur phone)
edit2: i'm not having my reflex by my side this couple of months, but you can check it making a photo in light isolated room with low shutter speed(20sec should be enough, if they really produce light)
AlexVendettA said:
maybe the black is not that black?
edit: just tested with fullhd resolution black picture and red dot pixel in centre(PNG file, not jpg nor bmp) and everything is working as intended - black is pitchblack(same as when u just block/shutdown ur phone)
edit2: i'm not having my reflex by my side this couple of months, but you can check it making a photo in light isolated room with low shutter speed(20sec should be enough, if they really produce light)
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Thank you for testing. I reproduced your result with a #000000 PNG and everything seems fine, as long as the brightness does not go below a certain value. Turning auto brightness off and sliding the brightness completely down enables some kind of light in the whole panel.
Could it be some android feature, which put's a light overlay over the the screen image to protect the eyes in low light environments, like these warm filter mods?

Question Issue with red showing as yellow in camera

I wanted to take picture of this software I use at work and to my surprise the red "button" is yellow on the picture from the ZF9. If the button is out of focus, the color of it is correct. I thought it could be something with the screen's filter making it look like that in all pictures, but my coworkers iphone took it correctly and back at home with an old S5 the colors are also correct.
More worrying is the fact that its the same with the GCam and every app with cam capture ability, so its just not a bug in the stock camera app.
Is it just my own ZF9? I will provide a screenshot of that software here, could someone use it to take picture of the "button" in their screen? This is a serious issue imo since the color is completely changed, its not just an inaccuracy.
This is not related to focus but white balance issue, in case there is a lot of black area white balance level starts to freak out.
Try to change white balance settings.
Or even not white balance - its auto EV correction issue. You can change it manually.
No wonder there is nothing like that for S5 if you are using flashlight.
zwirek75 said:
No wonder there is nothing like that for S5 if you are using flashlight.
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Using the flash on the Z9 had the button yellow. I used the flash on the S5 because it was way out of focus without it (custom rom not stock)
zwirek75 said:
Or even not white balance - its auto EV correction issue. You can change it manually.
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zwirek75 said:
This is not related to focus but white balance issue, in case there is a lot of black area white balance level starts to freak out.
Try to change white balance settings.
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I did try to change the exposure, but at the point where the red was actually the correct color, everything on the picture were very dark. I also tried to mess in the pro mode, changing the ISO and white balance but again to make the red actually look red and not yellow the picture was way too dark.
Imo the phone on auto should take the picture with the correct color. If the "darkness" from changing the exposure or ISO or WB is necessary (I am not a photographer) so be it. Still,I don't understand why it cant be bright, like the picture with the yellow button but with the correct colors.

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