screen dims when i rotate it to landscape? - Xiaomi Mi MIX Questions & Answers

It just started happening, idk what could have caused it. No matter what app, it dims when I rotate my phone and goes back to normal when I rotate it back to portrait. Turning up the brightness doesn't change the screen brightness in landscape but when I rotate it back to portrait it will brighten up to the new level

Nevermind I guess it's my sunglasses lol. I never had this issue before but oddly rotating my phone makes them block out the light from the screen I guess. Super strange.

You're using polarized sunglasses, I take it... Then it's normal

xpen.xda said:
You're using polarized sunglasses, I take it... Then it's normal
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I had no idea they would do that haha

Just got a pair of polarized sunglass clip-ons and was wondering what was going with multiple devices until I found this post. D'oh. Thanks!

Related

incall screen off app..like iphone????

the iphone switches the screen off when it goes to your head then turns back on when u take it away. is there a simple app for this??
Phone lacks the proximity sensor the iPhone has. Fortunately, it has a plethora of other useful features (a keyboard, picture messages, etc.)
pmow said:
Phone lacks the proximity sensor the iPhone has. Fortunately, it has a plethora of other useful features (a keyboard, picture messages, etc.)
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To add on to that the phone also goes to sleep when the call is connected and its just a matter of pressing the power button to get it to wake up again.
mine doesnt
Well mine has always went black when it goes up to my ear, but it would be nice if it came back on when removed from my ear.. although we dont have a proximity sensor, i dont see why it coulnt work with the gsensor/accelerometer. all it would have to do is go on when the phone is put back in the upright position
jok3sta said:
Well mine has always went black when it goes up to my ear, but it would be nice if it came back on when removed from my ear.. although we dont have a proximity sensor, i dont see why it coulnt work with the gsensor/accelerometer. all it would have to do is go on when the phone is put back in the upright position
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is there a setting for this?
is it possible to in fact use the light sensor? it obviously recognizes something when it turns off, maybe write up something saying "when dark below 'x' threshold, turn off screen. when bright above threshold, screen on. you would have to press the screen somewhat snugly to your face, but it sure beats nothing.
vader165 said:
is it possible to in fact use the light sensor? it obviously recognizes something when it turns off, maybe write up something saying "when dark below 'x' threshold, turn off screen. when bright above threshold, screen on. you would have to press the screen somewhat snugly to your face, but it sure beats nothing.
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It should be possible, but no one has done anything with the light sensor of turning it back on. I'm thinking that the polling of the light sensor turns off when the screen is in standby. If we can somehow get that to work in only incall (so it doesn't have battery issues), then it should work, when it goes from little light to more light, it should act as close to phone to far away from phone.
One could even use 2 sensors for it? Maybe the Light-Sensor and the G-Sensor. So when u bring the phone to your ear the light gets dark an the position upright. (the phone turns the screen off) And as soon as it get brighter and the position is change to normal (whatever that is ) it turns back on.
I reall would love to write something like that. But so far i have no clue of writing anything for that phone. Does anyone know a tutorial for writing software for a pda?
Thx
Come on guys this would be soooo great
jok3sta said:
Well mine has always went black when it goes up to my ear, but it would be nice if it came back on when removed from my ear.. although we dont have a proximity sensor, i dont see why it coulnt work with the gsensor/accelerometer. all it would have to do is go on when the phone is put back in the upright position
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Click to collapse
It doesn't actually do that when you put it up to your ear. It's a WinMo setting to put the phone in standby after a call is launched or received. What you preceive as behavior is actually a timing thing.
The guy from pocket shield managed to combine these two sensors, g-sensor and light sensor, to work together as locking/unlocking behavior.
maybe some g-sensor and lumos code can handle this thing... and create one cab solution here...
if some one could write this code it would be an AWESOME addition to the Phone. I would personaly love this as im sure many others would.
Thanks.
this is a bit late, but here's a cool app that i've found...
http://forum.xda-developers.com/showthread.php?t=488991
no its not too late. if people look around they would have found it.
aonavy said:
the iphone switches the screen off when it goes to your head then turns back on when u take it away. is there a simple app for this??
Click to expand...
Click to collapse
searching is your friend
http://forum.xda-developers.com/showthread.php?t=488991
warri said:
searching is your friend
http://forum.xda-developers.com/showthread.php?t=488991
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reading is your friend..look at the dates posted

Auto brightness not working as it should?

I have been noticing that my auto brightness doesn't work like it did when I first got my phone a few months ago.
Back then it seemed like it changed brightness after a few seconds when it should.
Nowadays it doesn't seem to do that anymore.
Now if I hold my phone close to a bright light, hit the power button and unlock the phone, the screen is very bright, as it should. When I hold my phone in a dark place, it doesn't adjust the brightness. It keeps being very bright.
BUT, if I hold my phone in a dark place and hit the power button and unlock the phone, it's dark, but when I move my phone to a brighter location it does make the screen brighter.
I first thought this had to do with CM, but now on stock froyo it does the same thing.
Is this normal, and am I just mistaken? And should the phone adjust the brightness when I hold my thumb on the sensor thats just right under the power button on the front of the phone (I expect the screen to be less bright)? Because it doesn't do that.
Thanks in advance.
No it's not normal, mine reacts to changes in ambient light in a second or 2 (FRF50), just like yours used to.
When I cover the light sensor with my thumb, the screen dims right down.
Thanks for your reply.
Is there anything I can do to check why this doesn't happen on my phone?
Can I perform a check on the status of my sensor, on it's behavior?
And are there any known reasons why this could happen?
Thanks in advance.
This exact issue is happening with me ever since I updated to 2.2. It worked perfectly before but now I notice that once the screen adjusts to maximum brightness in a well lit area, it never dims....don't know what the problem is. But I hope there is a solution.
Good to hear I'm not the only one with problem, that gives me hope this might be a software issue rather than a non-working sensor.
Rusty! said:
No it's not normal, mine reacts to changes in ambient light in a second or 2 (FRF50), just like yours used to.
When I cover the light sensor with my thumb, the screen dims right down.
Click to expand...
Click to collapse
Actually I may have to take this back, in retrospect, the dimming actually could have been the screen timing out.
When covering the sensor with my thumb and not having the screen set to 15secs, it doesn't dim until I lock/unlock the screen.
Reading on another forum this is by design rather than a flaw, as people complained the screen would fade in and out in certain light conditions... now it can't.
Ah, okay. Good to hear.
Thanks again, Rusty.
froyo seems to fix the autobrightness for me, at least now i can see the screen brightness is changing according to lighting condition, previously i don't notice it (using cyan ROM prior to froyo).

fun screen trick

turn the screen brightness all the way up
hold your nc in portrait orientation
put on your polarized sunglasses
magic...screen goes dark
now
turn to landscape
presto chango!
sudermatt said:
turn the screen brightness all the way up
hold your nc in portrait orientation
put on your polarized sunglasses
magic...screen goes dark
now
turn to landscape
presto chango!
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Click to collapse
That's probably the 'VividView' causing that
" The screen, "Vivid View" from LG. 16 million colors. ... a full lamination screen film technology. Maximizes readability of backlit LCD while minimizing glare."
califrag said:
That's probably the 'VividView' causing that
" The screen, "Vivid View" from LG. 16 million colors. ... a full lamination screen film technology. Maximizes readability of backlit LCD while minimizing glare."
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Happens with a lot of LCDs. I have to tilt my head a bit to read my car stereo's display when I'm wearing sunglasses.

If your screen doesn't turn on or you think it doesn't charge, look here

I just received my nexus and I thought the battery was dead cause it showed the battery icon briefly. I left it charging for an hour and nothing. I tried the flashlight trick on the screen and I could see the welcome screen. I disable the automatic dimming feature and now my screen turns on. It must be a software issue on the sensor. I don't know yet.
So you shine a flashlight at the ambient light sensor and it turns the screen back up? Like the sensitivity of the sensor is too low? I'll have to make a mental note of this for when mine finally comes in.
Yes if you can't see the screen. If it still doesn't work, shine the light on the screen and you should be able to see the welcome screen. I don't know if you ever had your laptop LCD inverter burn out?
Thanks for this post. I had the exact same problem. I struggled to get up and running, but figure it out with the help of my GNex.
WG
Thanks for the info.
I had this problem and I'm getting mine replaced. This is almost certainly not a software issue, else everybody would be having it (and if it were a misconfiguration, it would go away with a flash of the factory rom).
mewantnexus7 said:
I had this problem and I'm getting mine replaced. This is almost certainly not a software issue, else everybody would be having it (and if it were a misconfiguration, it would go away with a flash of the factory rom).
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Do a search for light sensor, and you'll find other people with this problem.
WG
True, I can't even see youtube in landscape mode cause the screen will shutoff. I have to have it in portrait mode.
Sounds more like a hardware problem. A light should DIM the screen, not brighten it. The sensor is reversed.
Sent from my Nexus 7 using xda app-developers app
mkiker2089 said:
Sounds more like a hardware problem. A light should DIM the screen, not brighten it. The sensor is reversed.
Sent from my Nexus 7 using xda app-developers app
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So when you walk outside to the bright sun, you would want your tablet's brightness to be at the lowest setting? I doubt it

What did I possible do so I don't do it again?

I was lying down on my back. Hands up looking at phone. I watched some video. I viewed some pictures. I turned it off and shortly after I got up to plug it into the charger.
When I turned the screen on to verify my alarm was set, the screen is normally portrait in orientation was landscape. It would not rotate. So, I unlocked it in landscape mode, which is a tad awkward just because I'm not used to it.
The screen would only rotate into landscape, or portrait, but portrait was upside down! The buttons for back or home were away from me. Turn off screen and back on. Same thing. Lock screen landscape.
So, I figure I'll go do that calibration where you put your phone on a level surface. It pops up in landscape and all I could see was a letter G and rest was black screen.
Rebooting fixed the problem, but does anyone know if I might have hit something or if there's a fix without rebooting?
yuppicide said:
I was lying down on my back. Hands up looking at phone. I watched some video. I viewed some pictures. I turned it off and shortly after I got up to plug it into the charger.
When I turned the screen on to verify my alarm was set, the screen is normally portrait in orientation was landscape. It would not rotate. So, I unlocked it in landscape mode, which is a tad awkward just because I'm not used to it.
The screen would only rotate into landscape, or portrait, but portrait was upside down! The buttons for back or home were away from me. Turn off screen and back on. Same thing. Lock screen landscape.
So, I figure I'll go do that calibration where you put your phone on a level surface. It pops up in landscape and all I could see was a letter G and rest was black screen.
Rebooting fixed the problem, but does anyone know if I might have hit something or if there's a fix without rebooting?
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Click to collapse
Personally this hasn't happened to me but I have heard of it happening. From what i have read and heard is that the proximity sensor for some reason gets stuck. i have heard of people using the old flashlight trick that was used on the M7 to fix it but a reboot fixes it every time. So I don't think you bumped anything. hope this helped .

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