Screen Flickering On low light? - One (M7) Q&A, Help & Troubleshooting

My screen flickers sometimes in the power saver mode n also when my brightness is set to about less than 40%. Should I be worried or it can be fixed in the software update? Anyone else with the same problem?
Sent from my HTC_Amaze_4G using xda app-developers app

Can you check for me if changing to another keyboard solves this flicker? I too noticed this ever so slight flicker but only when using stock keyboard if I change over to Swiftkey then it doesn't happen for me. It looks like its the screen flickering but in actual fact it seems to be just the keyboard area of the screen.
Report back if it fixes the issue for you. If it does then obviously this is software and we needn't worry.

sprint htc one user here. stock not rooted.
ive seen this obvious abrupt dimming since day one (had since launch). i use swiftkey only and no other keyboard.
when the screen is not in use i still see the screen dim. it dims abruptly as opposed to a gradual dim. i chalked it up to software that may be included in an update.
does NOT do it ALL the time though....

Well I tried with SwiftKey it didn't work. It's not just the keyboard are that flickers. It's the whole screen like trying to adjust to a particular brightness. If the brightness is set to about 70% there is no flicker
Sent from my HTC One using xda app-developers app

i guess this screens use PWM:
http://forums.androidcentral.com/htc-one/272432-htc-one-screen-issue.html

Related

Nexus one screen gets really dim

Please, any input is useful. ):
I just bought a nexus one the other day, and i think I was scammed. THe power button works fine, but occasionally, the screen would get super dim. It doesn't black out because I can faintly see all of the icons and menus, and I can tap them. ALso, its not automatic brightness, because its horribly horribly hard to see. Pulling the battery (sometimes) fixes this problem.
I'm currently running Kang-o-rama with SP2.
Has this ever happened to anyone? If so, how did you fix it?
It does sound its the auto brightness. If you're outside and its dims it is very hard to see. You the default android power widget to test it. It has brightness toggle on it. Full /auto/dim/ and basically the middle.
I'll take a picture of it once my dad comes home, but I tested it last night if it was autobrightness.
I waited for it to dim, then went into settings, disabled autobrightness, and put the brightness all the way up. It was still super dim, and didn't return to normal until I pulled the battery.
I would look for support in the thread for that rom. Or flash another rom. Sounds like it is just a bug in your rom.
I just installed a Miui rom hoping it'll fix it (cause I was using cm7 based roms) and it worked for a while.
Now it began to Flicker and finally turned off. It'll ring when phones call it but nothing will show on the screen. I'll pull the battery but this time nothing shows up (though it vibrates indicating it turns on).
I know this is a hardware problem now, do you guys know what part it is?
Please, any input is appreciated.
Sent from my HTC Glacier using XDA Premium App

Screen dimming prematurely

Lately, my screen has been dimming very quickly after I remove my finger from the phone. Sometimes it's normal (sleep after 30 seconds) but sometimes it will dim after 1-3 seconds. I'm running a gummy nightly from a week or so ago. As you could imagine, it's very annoying. Anyone know why this would be happening?
This may be a coincidence, but the dimming started after I updated XDA premium to the latest version. I don't see how the app would affect my screen dimming as it's across every app and on the homescreen.
Sent from my DROID3 using xda premium
try to disable pocket mode in settings/screen
My apologies, I thought I mentioned what my phone was running in the OP. I'm running Gummy 1.0 (ICS) and as far as I know, there is no pocket detection.
I AM using Auto-Brightness, but that is because there is currently no way to enable keyboard backlight without it. The dimming occurs regardless of the light levels. It can happen when the light level doesn't change at all.
Try disabling then re-enabling auto brightness.
Sent from my DROID3 using Tapatalk
Try playing with the auto brightness settings.
Disabled and re-enabled autobrighness. We'll see what happens. My guess is that for some reason, my phone doesn't consider the small touches I do (small scrolling up and down) as actually touches and thus fails to reset the 30 second time out. If resetting my autobrightness doesn't help, I'll just update to a newer nightly for my ROM.
Thanks for the replies guys!

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).
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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

Flickering display

Has anyone else noticed this?
Mainly when playing a game or browsing the Web. Lines flicker Cross the display horizontally
Sent from my Lt30p
av4tar said:
Has anyone else noticed this?
Mainly when playing a game or browsing the Web. Lines flicker Cross the display horizontally
Sent from my Lt30p
Click to expand...
Click to collapse
Yeah, I get a slight flicker, but like as if the auto brightness is still on but not as strong.
I turn auto brightness off, but I know what you mean.
These are actual lines
Sent from my LT30p using xda premium
Mine looks like the auto brightness gets a bit jittery. Usually when on the net but I've had it in a few other places. It makes it look like the processor is struggling to handle what ever is going on, it isn't, but it gives that impression.
Maybe the transition between brightness levels is set to too big an increment so it appears to jump between levels instead of smoothly fading.
Turn off auto brightness.
I didn't notice it until I sat under a certain light in my house. I guess the luminance in the room sits between two thresholds and causes it to madly flick between them. It looks like a bug which will hopefully get fixed!
Sent from my LT30p using Tapatalk 2
Nope, as stated its not auto brightness, I have it turned off.
I've noticed its not on every app. Farm invasion USA it will only have the lines flickering when the character respawns. Browsing the Web that often, watching a movie it doesn't do it at all.
Sent from my LT30p using xda premium
The app I mentioned I think it may be normal upon respawn, I'll test it on my SXS
Still, it flickers on chrome, and it's also done it just while in the dialer
Sent from my LT30p using xda premium
I've only noticed flickering when I had auto brightness turned on. I've been using my phone and N7 exclusively for the last two weeks as I had no access to a computer, so it got enough viewing!
With auto brightness on, in some lighting situations I am able to reproduce the flickering by angling the phone so it borders on the threshold it changes to the next level.
I've turned auto brightness off, and have not noticed any flickering while using Chrome/Tapatalk/Spotify/WhatsApp/Talk/SMS etc etc.
Only thing that bugs me so far is the noisy vibrate, bugged me so much I had to turn off haptic feedback.

Screen changing brightness when not on Auto and no power saving...

I just got my Asus tf701t and, while first using it, the home and back buttons did not work in portrait mode and the screen would change brightness at varying time intervals (usually a few seconds) when the brightness was set very low. an update to 4.3 cured the back and home button issue but the screen still can't stay at one brightness level when I set it to very dim. It's not changing dramatically, more like a few percent, but enough to be distracting.
The odd part is that the dimming/brightening issue almost seems application dependent. It occurs far more often in the home screen or skout but almost never when playing shadowgun dead zone or when using naked browser.
Does anyone else have similar issues?
The only posts about flickering on other people's tf701t seem to be related to power saving and I need to know if this needs to be exchanged or if this is a common problem.
dbozam said:
I just got my Asus tf701t and, while first using it, the home and back buttons did not work in portrait mode and the screen would change brightness at varying time intervals (usually a few seconds) when the brightness was set very low. an update to 4.3 cured the back and home button issue but the screen still can't stay at one brightness level when I set it to very dim. It's not changing dramatically, more like a few percent, but enough to be distracting.
The odd part is that the dimming/brightening issue almost seems application dependent. It occurs far more often in the home screen or skout but almost never when playing shadowgun dead zone or when using naked browser.
Does anyone else have similar issues?
The only posts about flickering on other people's tf701t seem to be related to power saving and I need to know if this needs to be exchanged or if this is a common problem.
Click to expand...
Click to collapse
I don't have the flickering when not on auto and lowest setting.
However some apps can dimm the screen while loading.
On the TF700 the stock browser did that when loading a page but on the TF701 the brightness doesn't do that.
You have an ambient light sensor built into the device. It adjusts the brightness based on the lighting in your environment. It can't be turned off either.
Sent from my Transformer Infinity TF701T using Tapatalk HD
xRevilatioNx said:
You have an ambient light sensor built into the device. It adjusts the brightness based on the lighting in your environment. It can't be turned off either.
Click to expand...
Click to collapse
It can't be turned off? So when you turn on automatic brightness it just changes the brightness more drastically? This doesn't sound right.
Based on the other poster's response, I think I need to return this unit. The screen dimming/brightening happens to often and randomly to be part of my apps and I even noticed, in some apps, that just touching the screen causes a brightness change.
Even if this is by design, it is far too distracting.
dbozam said:
It can't be turned off? So when you turn on automatic brightness it just changes the brightness more drastically? This doesn't sound right.
Based on the other poster's response, I think I need to return this unit. The screen dimming/brightening happens to often and randomly to be part of my apps and I even noticed, in some apps, that just touching the screen causes a brightness change.
Even if this is by design, it is far too distracting.
Click to expand...
Click to collapse
Read it and weep my friend. Proof is in the pudding..
Sent from my Transformer Infinity TF701T using Tapatalk HD
dbozam said:
I just got my Asus tf701t and, while first using it, the home and back buttons did not work in portrait mode and the screen would change brightness at varying time intervals (usually a few seconds) when the brightness was set very low. an update to 4.3 cured the back and home button issue but the screen still can't stay at one brightness level when I set it to very dim. It's not changing dramatically, more like a few percent, but enough to be distracting.
The odd part is that the dimming/brightening issue almost seems application dependent. It occurs far more often in the home screen or skout but almost never when playing shadowgun dead zone or when using naked browser.
Does anyone else have similar issues?
The only posts about flickering on other people's tf701t seem to be related to power saving and I need to know if this needs to be exchanged or if this is a common problem.
Click to expand...
Click to collapse
My 701 is doing this as well. Turned off auto brightness, turned off power saver, rebooted. When it comes back up the device acts like auto brightness is on, with screen brightness fluctuaating randomly. Turning power saver on and off again seems to solve it, but that behavior is very annoying - it's why I turn auto brightness off in the first place.
US SKU running 4.3 installed via ota, no root or unlock or anything - straight stock. Its also my second device, my original had a bad cable and wouldn't charge. Serial number ends in 072259.
Sent from my K00C using Tapatalk 4
Aaroneious said:
My 701 is doing this as well. Turned off auto brightness, turned off power saver, rebooted. When it comes back up the device acts like auto brightness is on, with screen brightness fluctuaating randomly. Turning power saver on and off again seems to solve it, but that behavior is very annoying - it's why I turn auto brightness off in the first place.
US SKU running 4.3 installed via ota, no root or unlock or anything - straight stock. Its also my second device, my original had a bad cable and wouldn't charge. Serial number ends in 072259.
Sent from my K00C using Tapatalk 4
Click to expand...
Click to collapse
I also tried turning power saver mode on and off and for me it seemed to improve the situation but not eliminate it. I am going to return the tablet and wait for the nexus 10.
Ugh, mine has been doing this, too. Can't believe there isn't a setting somewhere...
Mine is doing the same thing... glad that it's not just me, but this flickering is very annoying
Driving me nuts
I'm having the same problem and it's driving me nuts!
I'm quite convinced it's a software "feature" but currently there seems to be no way to turn it off?
It's one of those "Adjust brightness of the screen based on content" or "Changing LCD refresh rate and colors for power saving" but sadly it does it the wrong way around (This has been going on for a while now, manufacturers don't really get it). When there is a lot of bright content the brightness will rise and when there is mostly a dark screen it will fall.
Of course, this should happen exactly the other way around. When there is a lot of bright/white on my screen it should lower and when there is mostly black it should become brighter thus giving you more contrast but keeping the overall lux that comes off your screen the same...... My Intel graphics notebook does this too and it's very irritating. There they do it by manipulating the LCD screen and lowering the refresh rate and other tricks to save battery. First thing I turned off.
However way it goes though, you should be able to turn it off!
Quindor said:
I'm having the same problem and it's driving me nuts!
I'm quite convinced it's a software "feature" but currently there seems to be no way to turn it off?
It's one of those "Adjust brightness of the screen based on content" or "Changing LCD refresh rate and colors for power saving" but sadly it does it the wrong way around (This has been going on for a while now, manufacturers don't really get it). When there is a lot of bright content the brightness will rise and when there is mostly a dark screen it will fall.
Of course, this should happen exactly the other way around. When there is a lot of bright/white on my screen it should lower and when there is mostly black it should become brighter thus giving you more contrast but keeping the overall lux that comes off your screen the same...... My Intel graphics notebook does this too and it's very irritating. There they do it by manipulating the LCD screen and lowering the refresh rate and other tricks to save battery. First thing I turned off.
However way it goes though, you should be able to turn it off!
Click to expand...
Click to collapse
I'm having the same issue. I think it's the smart dimmer option Asus have used before but they forgot to include it in the Asus customised options. I'll have a dig through the ROM to see where it is stored.
I'm having this problem as well.
I have my brightness set to about 80%, Auto-Brightness Off, Power Save Off.
It is very annoying when reading magazines that have a lot of white background. My screen will be stable for minutes then, often on a touch, will change the screen brightness, seemingly by 5-20%.
I was just getting ready to return it, and thought I would check here to see of anyone else has this problem. Has any actually called Asus with this complaint? I would be interested to know if they see this as a hardware defect, software bug, or working as designed.
PS - I just placed a technical support request about this on the Asus Website. Here is my problem description:
Even with automatic brightness & power saving turned off, the brightness of the screen will change over time, often seemingly in response to a touch. (Reading Mode is Off as well.)
The period between changes can vary from several minutes to 30 seconds. It happens both while docked and undocked. It happens with apps and just at the launcher.
The amount of brightness change is 5-20% and it will often seem to step through some values before it stops at a particular one.
Given how fantastic looking the screen is, this unwanted fluctuation is particularly annoying.
I also own a TF201 and have not experienced this problem on that product.
Click to expand...
Click to collapse
sschlosnagle said:
I'm having this problem as well.
I have my brightness set to about 80%, Auto-Brightness Off, Power Save Off.
It is very annoying when reading magazines that have a lot of white background. My screen will be stable for minutes then, often on a touch, will change the screen brightness, seemingly by 5-20%.
I was just getting ready to return it, and thought I would check here to see of anyone else has this problem. Has any actually called Asus with this complaint? I would be interested to know if they see this as a hardware defect, software bug, or working as designed.
PS - I just placed a technical support request about this on the Asus Website. Here is my problem description:
Click to expand...
Click to collapse
I have this issue too but not a real biggie as the connection problems between dock and tablet.
Same problem!
dbozam said:
I just got my Asus tf701t and, while first using it, the home and back buttons did not work in portrait mode and the screen would change brightness at varying time intervals (usually a few seconds) when the brightness was set very low. an update to 4.3 cured the back and home button issue but the screen still can't stay at one brightness level when I set it to very dim. It's not changing dramatically, more like a few percent, but enough to be distracting.
The odd part is that the dimming/brightening issue almost seems application dependent. It occurs far more often in the home screen or skout but almost never when playing shadowgun dead zone or when using naked browser.
Does anyone else have similar issues?
The only posts about flickering on other people's tf701t seem to be related to power saving and I need to know if this needs to be exchanged or if this is a common problem.
Click to expand...
Click to collapse
Thank you very much for creating this topic, because I was worried for my tablet too!
---------- Post added at 11:55 AM ---------- Previous post was at 11:52 AM ----------
Snah001 said:
I have this issue too but not a real biggie as the connection problems between dock and tablet.
Click to expand...
Click to collapse
I heared a lot of people say I about this, but happily I seem to don't have it or I don't detect it. What is this dock problem about?
I suspect this is the same "smart dimming" feature that the 700 had.
improvius said:
I suspect this is the same "smart dimming" feature that the 700 had.
Click to expand...
Click to collapse
Yep me too and as soon as I root I'm going to see if the same fix will turn it off
There seems to be no way to disable this. Some believe it's the light sensor, but I've taped over mine with black electrical tape and tested and I don't see any difference in the behavior. Check our my Youtube video if you are a user who doesn't see the issue (look for threads in this same XDA forum).
I've finally been able to get someone at Asus to look into this and it's been sent to TW for review. I haven't heard anything back yet. I strongly recommend that other people who are annoyed by this (I find it tremendously distracting) to search on "asus escalation" which will bring up a special mailbox. Here is the link (although I do not know if the link will work for you). This should get looked at by someone with at least some ability beyond reading a script. If enough people do this, I think that they will fix it. Since you can temporarily override it by toggling smart saver on/off, it has to be fixable by software.
http://www.service.asus.com/#!escalation-mailbox/c1scx
derekk1 said:
There seems to be no way to disable this. Some believe it's the light sensor, but I've taped over mine with black electrical tape and tested and I don't see any difference in the behavior. Check our my Youtube video if you are a user who doesn't see the issue (look for threads in this same XDA forum).
I've finally been able to get someone at Asus to look into this and it's been sent to TW for review. I haven't heard anything back yet. I strongly recommend that other people who are annoyed by this (I find it tremendously distracting) to search on "asus escalation" which will bring up a special mailbox. Here is the link (although I do not know if the link will work for you). This should get looked at by someone with at least some ability beyond reading a script. If enough people do this, I think that they will fix it. Since you can temporarily override it by toggling smart saver on/off, it has to be fixable by software.
http://www.service.asus.com/#!escalation-mailbox/c1scx
Click to expand...
Click to collapse
I returned my tf701, waited for cyber Monday, and bought the Samsung note 2014 since the nexus 10 2 is so elusive. I put in an escalation request anyway and included a link to this thread in my complaint.
improvius said:
I suspect this is the same "smart dimming" feature that the 700 had.
Click to expand...
Click to collapse
I also saw this issue on my TF701. This seems a "feature" of Tegra SoC

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