Database Users

nexus 7 screen flickering

So this only Happens when I'm on Google chrome and I've noticed that ocassionally that the screen flickers, its not crazy annoying but definitely distracting. Have any of you had this problem?
Hopefully any of you aren't epileptic.

joshintoshin said:
So this only Happens when I'm on Google chrome and I've noticed that ocassionally that the screen flickers, its not crazy annoying but definitely distracting. Have any of you had this problem?
Hopefully any of you aren't epileptic.
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I totally thought that I had either 1. developed serious eye problems or 2. broke my brand new toy At least it's not just me having this problem

Yep its a known problem.
Sent from my Nexus 7 using xda app-developers app

yeah..
joecoolman said:
I totally thought that I had either 1. developed serious eye problems or 2. broke my brand new toy At least it's not just me having this problem
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Hopefully the next update will resolve this problem.

so set and wait.
So I should just wait for a fix and not return it over and over to try to find a good one. It has a year warranty.

I see it too!
Sent from my Galaxy Nexus

I turned off automatic brightness and I think that solved it. I think it was flickering when it was changing brightness.

its still there with auto off.
And with the brightness up but it so slight u have to be ocd like I am about my stuff to see it. But its easy to tell its not hardware because games like sonic CD are beautiful.

shamowfski said:
I turned off automatic brightness and I think that solved it. I think it was flickering when it was changing brightness.
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Mine still flickers regardless.
Sent from my Nexus 7 using xda app-developers app

So is this a software problem.
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flash_beezy said:
Mine still flickers regardless.
Sent from my Nexus 7 using xda app-developers app
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It happens to mine when its on the lowest brightness setting of when "auto brightness" is on. For now I've just set the brightness to max so I don't have deal with all the flickering.. for now.

flash_beezy said:
Mine still flickers regardless.
Sent from my Nexus 7 using xda app-developers app
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Mine as well
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With my settings set to Automatically lock (immediately after sleep) and power button instantly locks with a visible patter screen lock, my Nexus 7 on wake-up [pushing the power button immediately] either right after an invalid pattern code (where device then sleeps) or waiting a few seconds with no activity until the device sleeps (where the Nexus 7 fades to a black screen) will have a delay in bringing up the lock screen OR sort of flicker presenting some sort of black and white bar lines background at the bottom half of the screen for a split second before bringing up the lock screen. Is this normal or it is in fact a defect?
Thanks in advance!

Not sire about that I have seen it in 3rd patty apps on all devices before. But the flicker we are seeing is like it changing the brightness up and down.
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flash_beezy said:
Mine still flickers regardless.
Sent from my Nexus 7 using xda app-developers app
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As does mine. I think people think it goes away when not on auto, because the "low" setting is about 20-25% and auto will often bring it lower than that, making the flickering worse.
At medium brightness the problem is almost, almost, non-existant.
It's also not just in chrome as some say, just most noticable on chrome's white backgrounds. I've noticed it in any app with lighter, brighter colors. I just exchanged my Nexus 7, and the new one has the exact same problem. This leads me to think the software problem is the most correct answer.

I get it every once in a while. Full brightness set, no automatic. Ill wait for a fix, doesn't bug me too bad.
Sent from my Nexus 7 using Tapatalk 2

I suspect it to be a software problem because in game it looks great. Plus in a new device like this software problems go with the territory.
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Doesn't bug me in function but I'm electronic ocd I like my stuff to be perfect.
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bpschoon said:
Mine as well
Sent from my Nexus 7 using xda app-developers app
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And mine as well I noticed my screen flickered when my batt was getting down to 10% and my brightness level was at about 1/3. But now its charged and I don't see it flickering yet. I don't know...with Chrome having a bug (lags when scrolling) and the flickering screen...I may be returning my unit? I really hate to because aside from my issues, it's an awesome device!

Don't take it back they well fix it with a update.
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Momentary black screen

Anyone had this one? Since 4.2, the screen momentarily goes black, with a similar transition to hitting the task manage soft key, but transiting to the left in landscape, then flicks back to normal use. Happens in apps...screws up some games, puts others into pause mode as if a task has been switched. Thought it might have had something to do with auto rotation going a bit bonkers, but not sure....
Not heard any reports...have looked through the forum, couldn't find anything.
Weird...it just did it then....but the keyboard stayed on screen, xda disappeared to the left...
Any thoughts and thanks in advance
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Thank God! Thought it was just me!
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Ok..just happened again while in portrait mode. Definitely saw it flick to landscape. Rotation is locked btw.
Hmmmmm.....
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It happened to me three times last night after update to 4.2 :crying:

Ok...so, while sitting in a tedious meeting, Nexus in landscape, propped up with its folding case the screened flipped upside down and stayed upside down. 3 times. My ipad using colleague giggled.
Any way to recalibrate the tilt sensor? Or any other suggestions?
It's not the end of the world but...there must be a patch solution or other? Before 4.1 I used the auto rotate app, I forget its correct name...
Thoughts?
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I used logcat to monitor the Nexus 7 until the random rotation happened. After looking at the log I realized that it was always the same process being activated and that process was nVision.
Since nVision always rotates into landscape mode I was suspicious that perhaps when it tried to update itself in the background it was changing the screen orientation. I disabled notifications and then uninstalled the app and the problem has completely gone away. I have had no random rotations at all in the last 24 hours.
Sent from my Nexus 7 using Tapatalk 2

Thanks very much. Ill give it a try and report back
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Okie doke.
For the record.... 48 hours and no random flips to landscape and back. I'd be willing to be a substantial amount of money this was the culprit. However, whether this is a 4.2 issue per se vs. Bad behavior in nVision is an open Question.
Sent from my Nexus 7 using Tapatalk 2

Ok. Disabling nvision notifications still flips out. Will uninstall later.
Thanks again
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Uninstall it. I still think it checks in and screws your screen, whether it shows you the notification or not.
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Uninstalled...all good so far. Woooooo!
Cheers!
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N7 Not Recognizing Touch EXCEPT Notification and Navigation Bars

I have three users configured and at times the tablet seems to lock up. But I can still pull down the notification drawer and setting drawer. I can touch the back, home, or multitask softkeys, or slide up for Google now.
But no matter where I navigate to, the N7 does not register touches in the "screen" area.
I have found that pulling down the setting drawer and tapping the user to "logout" and then logging back in immediately fixes the issue. Also toggling sleep/wake button and logging back in also fixes it.
Is this a known issue? Is this multiuser, software or hardware specific? Any solutions?
(I read back through a couple weeks of posts but didn't see this issue)
--- UPDATE------
Just happened again. But I left it alone for a minute, picked it back up and it was working fine. Perhaps this is app lag. The notification and navi bar work because they're systems but the screen stops taking input while it lags....(just a thought, I don't know how that stuff might work)
BTW I have a 32 GB N7, it is not rooted, and is fully up to date running 4.2.1
Sent from my LG-P930 using xda app-developers app

Im having the same issue with mine..just got it afew days ago and it just started about an hour ago. I think its a screen issue cause now it keeps coming up with the menu to change wallpapers without me touching it. And its been locking up alot. Might have to RMA it.
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RMA it? Is yours rooted? Do you have multiple users?
Sent from my Nexus 7 using XDA Premium HD app

Do you have an otg cable? Try connecting a mouse to it when it does this and see if it recognizes mouse actions.
Sent from my Nexus 7 using XDA Premium HD app

if youre rooted, try a different rom, i had similar problems, but when i flashed cm10.1 it's gone. btw why is this topic in general not q&a?

Billchen0014 said:
if youre rooted, try a different rom, i had similar problems, but when i flashed cm10.1 it's gone. btw why is this topic in general not q&a?
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This is not a question it is an issue with the device. This is appropriate for general.
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AFAinHD said:
Do you have an otg cable? Try connecting a mouse to it when it does this and see if it recognizes mouse actions.
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I do not have an otg cable.
Sent from my Nexus 7 using XDA Premium HD app

Damn. Well maybe get a log cat next time it happens. Maybe there will be something there to show why it stopped working.
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I'll have to learn how to get a logcat. But I was able to recreate the issue and get a video. I could only get it to affect settings and the play store but I've had this in the launcher before too. I don't think you can hear but tapping the screen was causing the touch sound.
Video: https://www.youtube.com/watch?v=y6xMYUxYv9k&feature=youtube_gdata_player
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ShadowOf said:
Video: https://www.youtube.com/watch?v=y6xMYUxYv9k&feature=youtube_gdata_player
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No one has had this issue? I've only experienced it in Settings and PlayStore on me first and second user, nothing on my third user. Also noticed a litte lag on the homescreen too.
In the video you may be able to hear the touch feedback sound. The screen is recognizing taps but not doing anything. Sleep/Wake fixes the issue until you leave the app...
Guess I'll need to exchange my N7 and hope to get one without this issue.

Why did this get moved to Q&A??
Are Issues not discussed in General?

[SOLVED]
I was using APP LOCK on User #3 and that caused what seems like an overlay that prevented touch on users 1&2.
I sent this issue to the apps support. And will try to find a free app locker that is milti-user friendly.
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Annoying touchscreen problem

Hey guys,
So my N7 seems to have gone crazy. I can't even type, scroll, zoom in/out or swipe or do anything on my nexus 7. I enabled the "see screen touches" option in settings ...
The problem is that it get this random touches on my screen. And when I actually touch the screen it does not record my touches... Sometimes I'm watching a video
and it will randomly pause it because it recorded a touch..
Any of u heard of this issue??
I was trying to type it on my N7 but I couldn't get past the title for the thread :banghead:
Thanks I'm advance
Sent from my Nexus 4 using xda app-developers app

Extra info:
N7
Everything stock 4.2.2
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Touchscreen issue

Hi Guys
I seem to be suffering from a issue where the touchscreen has a dead spot.
Now I had an earlier issue that caused all sorts of issues with screen responses - ultimately ending in no response unless I hit the power button to lock and then unlock.
That problem lasted about a week and then stopped - my thinking is that there was an app update that solved it.
Now however the issue has resurfaced (seemingly after other app updates) but it is a dead spot roughly where the first notification would be on the notification draw. Any ideas as how best to find out the cause of the issue, or a fix?
I've included screen shots showing the touch trace.
Cheers for any help
Sent from my Nexus 4 using xda app-developers app

I can't help you but with some custom rom there can be a bug with it until I make some setting changes to the Nav Bar, but otherwise I don't know.

Forgot to say that this is stock 4.3
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scrads said:
Forgot to say that this is stock 4.3
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Many people are complaining about 4.3... It's causing many problems
Thu'umed from my Predator

What I don't get is why it went away after the first time.
I don't really want to factory reset if I can help it.
Is there a way to look at an update history for all your apps? Then I can pinpoint the offender.
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I've found a solution.
After factory reset and safe mode not helping I came across a comment in another thread.
You have to Disable HW Overlays and Force GPU Rendering. Now its not perfect and can have an occasional fit but does seem to solve the issue
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