[Q] Screen Flicker H/W or S/W - Nexus 7 Q&A, Help & Troubleshooting

I notice that the screen on my nexus 7 flickers at regular times at brightness levels lesser than 30% or so.
Here's what I tried:
1. Disable auto brightness
2. Installing lux and turning of auto
3. Factory Reset
4. Wifi Conservation-turned off
Still, it's not going away. I'm running Android 4.2.2. It does not appear to flicker at subzero levels on lux.
This is a new Nexus 7 and I want to ask whether I should return it( If it is a H/W problem) or it has some S/W solution?
Also, this is sorta a medical question: Is it unhealthy for your eyes to use subzero brightness?

sansui12 said:
I notice that the screen on my nexus 7 flickers at regular times at brightness levels lesser than 30% or so.
Here's what I tried:
1. Disable auto brightness
2. Installing lux and turning of auto
3. Factory Reset
Still, it's not going away. I'm running Android 4.2.2. It does not appear to flicker at subzero levels on lux.
This is a new Nexus 7 and I want to ask whether I should return it( If it is a H/W problem) or it has some S/W solution?
Also, this is sorta a medical question: Is it unhealthy for your eyes to use subzero brightness?
Click to expand...
Click to collapse
My opinion, I would return it. I had this problem when I got my n7 on its first release but it went away after the updates

kieso said:
My opinion, I would return it. I had this problem when I got my n7 on its first release but it went away after the updates
Click to expand...
Click to collapse
Did you mean later production batch fixed the issue?
Thanks.
Sent from my Nexus 4 using Tapatalk 2

kieso said:
My opinion, I would return it. I had this problem when I got my n7 on its first release but it went away after the updates
Click to expand...
Click to collapse
I'm on the latest version of android. So it is a H/W issue? I need to return it soon then.

sansui12 said:
I'm on the latest version of android. So it is a H/W issue? I need to return it soon then.
Click to expand...
Click to collapse
Have you tried turning off smartdimmer?

I'd send it back mate.
Even though some of these suggestions may fix your issue, thats not the point !! You shouldn't have to disable anything to stop the screen flickering.
RMA it.

I sent mine back for service yesterday.
Ssn starting from C6OK.
Sent from my Nexus 4 using Tapatalk 2

Fixed \o/ I guess
It's hopefully fixed after turning off Tegra PRISM.
I can't notice any flicker now.

Related

Nexus 7 Backlight Flicker?

Does anyone else have this problem with their nexus 7? I just got my nexus 7 today but I noticed that the backlight seems to flicker randomly
It doesn't look like much in the video but it is very noticeable and gets annoying when you're reading an ebook like i was.. Here's a video showing the problem.(It's near the end)
VIDEO LINK: h**p://db.tt/28eD0NLk (It happens around 9 second in) (change ** into tt)
For whatever reason this forum would not post a video link to show the problem.. for those who wants to know what it looks like please PM me..
But basically the screen flickers randomly ..
Is this a software problem? Should I go back and get it exchanged?
I don't see a video
Sent from my Nexus 7 using xda app-developers app
phantasybm said:
I don't see a video
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Yeah because the forum does not allow new users to post link..which i think is really stupid
Already have a topic on this: http://forum.xda-developers.com/showthread.php?t=1740385
HiddenSanctum said:
Already have a topic on this: http://forum.xda-developers.com/showthread.php?t=1740385
Click to expand...
Click to collapse
I think its different.
Mine flickers no matter which app I use..even on home screen it flickers..
Also this forum has the most ridiculousspam prevention method..5 mins between posts + no link ? WTF
Its because you are new, we get a lot of trolls
Does increasing your brightness help?
Sent from my Nexus 7 using Tapatalk 2
I've had a similar problem as well. It seemed to happen to me on auto-brightness when it was changing the brightness level. I can't say for sure though, just my observation.
Sent from my Nexus 7 using xda premium
HiddenSanctum said:
Its because you are new, we get a lot of trolls
Does increasing your brightness help?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
I havn't tried it yet..do we know if it's a hardware problem or software?
I just got it today so I can still return it if it turns out to be hardware
We really dunno at this point, but we are speculating software since both HTC One X and TF300 had similar problems and were fixed with firmware updates. Also someone switched it three times and all of them had this issue. Also try to run the screen in a pitch black room and tell me if the screen flicker is there. I may have a theory but need some other people to see if their units are behaving the same way as mine.
You can still post the link when you alter it a bit, insert a few *** into it, for example.
I turned mine on as soon as I got hold of it, no flicker, managed to go through and set up things, powered off and left to charged.
Coming back to it the screen would appear to turn on and off randomly, I thought it could be an app controlling a proximity sensor (I have one on my phone and I was EXTREMELY tired!), when I took it into the light there was no change.
I found that shaking it would help it flicker on and off at all intervals but didn't fix it. In the end I just started pushing random areas on the back, just before the issue went away I pressed around the bottom left quarter of mine and haven't had an issue since!
Glad I wasn't the only one with the problem though and would love to actually find out what it was.
Hope this helps!
Sent from my HTC One X using xda premium
kanzlerin said:
You can still post the link when you alter it a bit, insert a few *** into it, for example.
Click to expand...
Click to collapse
Try this video,
h**p://dl.dropbox.com/u/13153603/Videos/VID_20120715_100253.mp4
it is using google map and you can see the constant flickering.. It doesn't look very severe in the video but it is actually very noticeable and annoying
I have the same issue with mine. It only seems noticeable when I have the brightness set to the lowest setting and on a page that is predominately white. I don't think it's the proximity sensor though, because it happens both when I set it manually to the lowest setting and when I'm in the dark and the tablet sets the brightness all the way down itself. Hope the next update fixed this, because it's really annoying!
Sent from my Nexus 7 using XDA Premium HD app
Here's the link: http://dl.dropbox.com/u/13153603/Videos/VID_20120714_215601.mp4
Hope it works.
Seems like only a small portion of nexus 7 owners are reporting this issue .. I think I'm going to return mine ...
HiddenSanctum said:
We really dunno at this point, but we are speculating software since both HTC One X and TF300 had similar problems and were fixed with firmware updates. Also someone switched it three times and all of them had this issue. Also try to run the screen in a pitch black room and tell me if the screen flicker is there. I may have a theory but need some other people to see if their units are behaving the same way as mine.
Click to expand...
Click to collapse
I first noticed this flicker in a darkened room, so yes, it is definitely something going on. I'll try disabling auto-brightness to see if that matters.
If anyone else has info about this, please share!
PS this thread seems to describe the same issues: http://forum.xda-developers.com/showthread.php?t=1740385
Screen Flicker
HiddenSanctum said:
We really dunno at this point, but we are speculating software since both HTC One X and TF300 had similar problems and were fixed with firmware updates. Also someone switched it three times and all of them had this issue. Also try to run the screen in a pitch black room and tell me if the screen flicker is there. I may have a theory but need some other people to see if their units are behaving the same way as mine.
Click to expand...
Click to collapse
I can attest that the flicker is ever present in a pitch black room as well.
Like this?
There are a few videos on youtube, but i cant post links but if you do a search you can find it
I noticed a flickering in chrome yesterday. But only in chrome and only while the page is rendering after it fully renders no more flickering.
Everyone turn off wifi and I guarantee it will go away. It happens when using wifi which makes it hard to believe that a software update can fix it.

Nexus 10 screen glitches

Every so often (usually when scrolling between home screens, and ALWAYS on the home screen), the screen has a horizontal line, maybe 200 pixels high, that just bugs out for half a second. I'm wondering if this is a problem with software or hardware so I can decide whether or not to RMA. For reference, I'm on stock and have not updated to 4.2 (I don't want to deal with all of the problems people are having with 4.2).
So, has anybody else experienced this? Thanks.
Sent from my Nexus 10 using Tapatalk 2
godvsnietzsche said:
Every so often (usually when scrolling between home screens, and ALWAYS on the home screen), the screen has a horizontal line, maybe 200 pixels high, that just bugs out for half a second. I'm wondering if this is a problem with software or hardware so I can decide whether or not to RMA. For reference, I'm on stock and have not updated to 4.2 (I don't want to deal with all of the problems people are having with 4.2).
So, has anybody else experienced this? Thanks.
Sent from my Nexus 10 using Tapatalk 2
Click to expand...
Click to collapse
I've been having this happen to me. I've had my nexus 10 for about a week now. Did you find a solution to this?
That's not the glitch I have. What my problem is that I play Angry Birds and when I touch the screen to activate a bird it takes about 1/2 a second to respond. I keep thinking it's Angry Birds but maybe not. The OP says "glitches" so I think I'm still on topic.
godvsnietzsche said:
Every so often (usually when scrolling between home screens, and ALWAYS on the home screen), the screen has a horizontal line, maybe 200 pixels high, that just bugs out for half a second. I'm wondering if this is a problem with software or hardware so I can decide whether or not to RMA. For reference, I'm on stock and have not updated to 4.2 (I don't want to deal with all of the problems people are having with 4.2).
So, has anybody else experienced this? Thanks.
Sent from my Nexus 10 using Tapatalk 2
Click to expand...
Click to collapse
I'm having the same issue. I've only had the n10 for a few days but I'm getting that little screen glitch a lot. Always about 20% up from the bottom of the screen in landscape, and it stays there in portrait so it's on the left or right side. Is everyone getting these? Has it gone away for anyone or have you found a solution?
daveotero said:
I'm having the same issue. I've only had the n10 for a few days but I'm getting that little screen glitch a lot. Always about 20% up from the bottom of the screen in landscape, and it stays there in portrait so it's on the left or right side. Is everyone getting these? Has it gone away for anyone or have you found a solution?
Click to expand...
Click to collapse
My game problem was handled by flashing the JOP40D OTA zip. It seems to have handled anything I was noticing.
godvsnietzsche said:
Every so often (usually when scrolling between home screens, and ALWAYS on the home screen), the screen has a horizontal line, maybe 200 pixels high, that just bugs out for half a second. I'm wondering if this is a problem with software or hardware so I can decide whether or not to RMA. For reference, I'm on stock and have not updated to 4.2 (I don't want to deal with all of the problems people are having with 4.2).
So, has anybody else experienced this? Thanks.
Sent from my Nexus 10 using Tapatalk 2
Click to expand...
Click to collapse
I have the same exact problem with the same settings although mine will sometimes hit other parts of the screen occasionally. Was also wondering if an RMA is in order or is it just software.
Same here! I truly wonder what cause this..... Should I RMA?
Sent from my Nexus 7 using xda app-developers app
Did anyone RMA
So, I know I'm replying to a very old thread, but I'm having the same issue and we wondering if anyone had RMA'd their nexus? Mine's out if warranty in a month and want to return it if this is potentially a hardware issue.

Dimming the display to reduce over heating?

Alright so I just got my Note 3 here in Canada (SM-N900W8) and whenever I download an app from the Play store, or do anything I would normally do on a S4 or HTC One, the phone lowers the screen brightness (usually keep it on full brightness). When I go into Settings > Display > Brightness, it says something along the lines of to ensure your phone doesn't over heat, your phone's brightness has been lowered. Now, I've noticed this happen a handful of times, and I'm wondering if anyone else is having this problem?
I don't think the phone should be doing that over simple task like downloading apps. Might want to take it back asap and exchange for a new one.
danv28 said:
Alright so I just got my Note 3 here in Canada (SM-N900W8) and whenever I download an app from the Play store, or do anything I would normally do on a S4 or HTC One, the phone lowers the screen brightness (usually keep it on full brightness). When I go into Settings > Display > Brightness, it says something along the lines of to ensure your phone doesn't over heat, your phone's brightness has been lowered. Now, I've noticed this happen a handful of times, and I'm wondering if anyone else is having this problem?
Click to expand...
Click to collapse
Yes, mine is doing the same exact thing. When it first started happening, I thought there was something wrong with this particular phone but then I saw that same message. It's annoying have the screen change brightness like that.
I notice when browsing web page it does it too.. can anyone else confirm? Test by turning your brightness all the way, then download a few apps and browse the web. Let me know.
same experience
Hi! Very new at this forum. Just searched the net because of the same problem. The screen keeps dimming even if im using it. I thought it was a problem so I had my unit replaced. I have a new one now but it still does the same thing. It still dims randomly. Now I dont know if I should have another replacement or if this is normal.
danv28 said:
Alright so I just got my Note 3 here in Canada (SM-N900W8) and whenever I download an app from the Play store, or do anything I would normally do on a S4 or HTC One, the phone lowers the screen brightness (usually keep it on full brightness). When I go into Settings > Display > Brightness, it says something along the lines of to ensure your phone doesn't over heat, your phone's brightness has been lowered. Now, I've noticed this happen a handful of times, and I'm wondering if anyone else is having this problem?
Click to expand...
Click to collapse
I think the dimming may be caused by settings>device>display>auto adjust screen tones. And/or screen mode check anything but adapt mode. .. That solved it for me.
Sent from my SAMSUNG-SM-N900A using xda app-developers app
c-mack said:
I think the dimming may be caused by settings>device>display>auto adjust screen tones. And/or screen mode check anything but adapt mode. .. That solved it for me.
Click to expand...
Click to collapse
This fix it for everyone? Kinda nervous about this....
It won't hurt anything, it's just a device setting. You can always change it back. ..
Sent from my SAMSUNG-SM-N900A using xda app-developers app
I was having this same issue so I turned off the smart view eye thing and so far no change to the brightness at all so im hopeing thats what it was .
Sent from my SAMSUNG-SM-N900A using xda app-developers app
This is kind of scaring - because the Galaxy MEGA has the very same problem (just google it or check the mega forum here on xda).
Gesendet von meinem GT-I9505 mit Tapatalk 4
brooon said:
This is kind of scaring - because the Galaxy MEGA has the very same problem (just google it or check the mega forum here on xda).
Click to expand...
Click to collapse
And here's the link to that thread... http://forum.xda-developers.com/showthread.php?t=2382134
I haven't got the Note 3 yet partly because of this. When I compared my Note 2 to the Note 3 in the At&t store I noticed the Note 3 was definitely not as bright, while being obviously bluer. But I also caught it dimming itself too, very quickly but couldn't get it to reproduce the behavior. Changing the display mode didn't affect any of this. I've wanted to see this amazing improved display everyone talks about but I haven't seen it yet - certainly not when the brightness is set manually.
I wonder if this dimming display thing is a new normal, that they've made the brightness more an automatic control now. I have no idea if this is to save battery (but then why not let the user choose) or if these new screens need to be protected more from overheating.
Sent from my SAMSUNG-SGH-I317
What's the point of full brightness if it's going to auto-dim all the time? I ended up returning my Galaxy Mega for this very reason.
Brgds... /Tubgirl
What parts of the phone heats up? Mine is near the camera. But I havent had this message yet on my note but it does get fairly hot alot. I dont even do anything for it to heat up this much. Just browse around and dont play much games.
Sent from my SM-N900T now Free
Make sure that the setting under display called "Auto adjust screen tone" is not selected.
Sent from my Nexus 7 using XDA Premium 4 mobile app
I have auto-tone off, the eye tracker off, adaptive display off, brightness in browser all the way up.. still happens.. the message is displayed when you go to adjust the brightness.. interesting to see i'm not the only one with this issue
Does it only happen after heavy use or what?
Also happen on my s4...verry annoying samsung
Sent from my GT-I9500
riyoshadqi said:
Also happen on my s4...verry annoying samsung
Sent from my GT-I9500
Click to expand...
Click to collapse
I have the same problem, i have started a thread
http://forum.xda-developers.com/showthread.php?t=2475017
I have absolutely everything turned off!! It is stupid and annoying and i am returning my phone because of it
BTW this is my second device in 4 days!
Keepingitrealz said:
I have the same problem, i have started a thread
http://forum.xda-developers.com/showthread.php?t=2475017
I have absolutely everything turned off!! It is stupid and annoying and i am returning my phone because of it
BTW this is my second device in 4 days!
Click to expand...
Click to collapse
I'm on my third... and posted already in your thread! for me this throttling happens all the time, gallery indexing for example triggers it a lot!
to clarify:
this throttling has nothing to do with settings a user can adjust, it's logic must be kernel implemented! no auto-contrast setting would help! and it happens even when you are on manual lowest brightness. on my devices the screen would switch even then in a cycle of ca. 20s between a additionally dimmed and the set state...
Sent from my SM-N9005 using XDA Premium 4 mobile app

Brightness Bug?

Hi,
Have any of you noticed when you push the home or the power button to turn on your phone to unlock it the screen is really bright for a second then it switches to your settings? Has anyone experienced this and if so has anyone found a way to stop it?
Amrut223 said:
Hi,
Have any of you noticed when you push the home or the power button to turn on your phone to unlock it the screen is really bright for a second then it switches to your settings? Has anyone experienced this and if so has anyone found a way to stop it?
Click to expand...
Click to collapse
Same Problem here...
International 9500 Germany
I think it may be cz of adapt display.
Sent from Note 3 (The beauty & beast)
Yes sand issue here had 4 of these things. Pretty crap really and the lowest settings is not low enough in a dark room.
I fixed mine. Turned off adaptive display and reset the handset. Problem solved.
Sent from my SM-N9005 using Tapatalk
Nu such issue on mine. Might be because of auto brightness, the sensor is off when the screen is off.
Yes. I have see this issue in my brother in law note 3. We all bought 3 note 3. 2 of it doesn't have this issue. I wonder is it hardware issue? Since the other two phone will never having the brightness problem.
Sent from my SM-N9005 using Tapatalk
riz157 said:
Yes sand issue here had 4 of these things. Pretty crap really and the lowest settings is not low enough in a dark room.
Click to expand...
Click to collapse
I noticed this on my Nexus 7 2013, it's really annoying when you want to say read in bed and the lights are off it's far too bright. I found using the app Brightness Adjuster solved this. It lets you go way below the firmware level of brightness and I have found it excellent. May work on your NIII.
ganstar said:
I noticed this on my Nexus 7 2013, it's really annoying when you want to say read in bed and the lights are off it's far too bright. I found using the app Brightness Adjuster solved this. It lets you go way below the firmware level of brightness and I have found it excellent. May work on your NIII.
Click to expand...
Click to collapse
Thanks, yet another auto brightness app works brilliantly.
Sent from my SM-N9005 using Tapatalk

[Q] Brightness changing automatically on GPE

I got my GPE yesterday and while setting it up, I noticed that the brightness would change on its own intermittently from the same bright white that I have on the LGE I picked up last weekend to something like what folks are describing as the more yellow-tinted display on other threads. Note that I do *not* have auto-brightness enabled! This is happening when I have the brightness cranked all the way up to 100% without auto-brightness.
If the screen were yellow-tinted all the time, I'd think it's the same issue others are reporting, but since it does vary between the two randomly, I'm thinking/hoping that it's software and not a hardware issue. Does this sound familiar to anyone else? If so, does anyone know of a way to lock it in on the brighter/whiter setting?
My GPE is doing the same. Brightness will either dim or brighten on its own. It's a very subtle change, but definitely noticeable. Also its very intermittent and I've only noticed it in chrome, Google now. I also have auto brightness disabled and brightness at or near 100%.
Sent from my LG-V510 using XDA Premium 4 mobile app
havoc999 said:
My GPE is doing the same. Brightness will either dim or brighten on its own. It's a very subtle change, but definitely noticeable. Also its very intermittent and I've only noticed it in chrome, Google now. I also have auto brightness disabled and brightness at or near 100%.
Sent from my LG-V510 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I contacted Google support and they're sending me a replacement. I'll post here as to whether that solves the problem or not.
Just got my replacement for the exact same issue. Unfortunately the new tablet does the exact same thing. I originally had the LG version and never had this problem. Only in the GPE edition.
jeff327 said:
Just got my replacement for the exact same issue. Unfortunately the new tablet does the exact same thing. I originally had the LG version and never had this problem. Only in the GPE edition.
Click to expand...
Click to collapse
Exact same experience here. My Galaxy S4 does something similar. I found one thread the other day saying that Android lowers the brightness automatically when the device temperature hits a certain level (95F, maybe?). I've never seen this on my other Android devices, but I'm kind of resigned to this being the case. It's really my only nit with an otherwise outstanding device, so I guess I'll live with it.

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