Screen sensitivity - Nexus 4 Q&A, Help & Troubleshooting

Been having problems with my screen lately. Its hard to explain but some of the screen isn't responding to touch.
I'll click on find on page in chrome and it will go to the option below it. Seems to be very unresponsive too. Some of the keys dont work when typing. When I press the power and unlock they start to work again.
Running PA beta 4 and more recently beta 5 both with the same problem. Pretty sure the problem came half way through using beta 4.
Anyone know what's going on?
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Basically when I go down from where that pointer is it is unresponsive. Anyone know why this is?
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Related

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.
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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.
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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
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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?
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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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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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
I do not have an otg cable.
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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
Click to expand...
Click to collapse
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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[Q] Touch detected incorrectly right after power on

This has been happening since I remember getting the device. About 3/5 times when I bring my device out of standby and I go to enter my pattern the touch is off. I have "show touches" enabled in developer options to verify this.
When I put my finger on the top left dot of the 3X3 pattern, which is around the middle-left of the screen, it is detecting that I'm touching the device all the way in the top left corner. If I drag my finger around the screen, the touch is offset. If I remove my finger from the screen and place it back on the screen, then it is properly detected.
I didn't run on stock for very long, maybe an hour or two, before I rooted and flashed AOKP. Right now I'm on WhiteHawkx's unnoficial AOKP nightly and Franco's Kernel (r122).
My plan is to flash back to stock and see if it still happens then. But currently I have a really busy week ahead and don't have time so looking for insight.
Anyone else experience something like this?
No one? So I guess I should call Google for a warranty exchange?
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fone_fanatic said:
No one? So I guess I should call Google for a warranty exchange?
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Click to expand...
Click to collapse
I would do that if I were you.
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Try recalibrating the touch screen, I think there's an option in settings.
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It's franco's kernel, I have it too.
.coomb. said:
It's franco's kernel, I have it too.
Click to expand...
Click to collapse
I posted in that thread a while ago about this issue and no one confirmed. Thanks for your reply. I'm going to go back to stock this weekend and run it for a couple days to verify.
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fone_fanatic said:
I posted in that thread a while ago about this issue and no one confirmed. Thanks for your reply. I'm going to go back to stock this weekend and run it for a couple days to verify.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Let me know your results. If it persists, I might have to send mine back.
I'm on stock ROM. I have this issue too, when I power on and drag to unlock, I get a delayed mismatched response. I have to power off then back on again.
It started this recently, so might be app related.
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Vyker said:
I'm on stock ROM. I have this issue too, when I power on and drag to unlock, I get a delayed mismatched response. I have to power off then back on again.
It started this recently, so might be app related.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
What kernel are you running?
Vyker said:
I'm on stock ROM. I have this issue too, when I power on and drag to unlock, I get a delayed mismatched response. I have to power off then back on again.
It started this recently, so might be app related.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Turn on " show touches" in developer options to help verify if you the save thing happening.
I don't have to reboot mine but I have to lift finger of screen and put back on to get it to properly detect where the touch should be.
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So just as a follow up I reverted to stock for 5 days and didn't see this issue. Flashed back to AOKP and Franco kernel and now it's happening randomly when I go to hang up a call. I tap on the red hang up bar and it detects the touch in the top left corner.
I called Google play support but since I didn't buy my device from them they directed me to lg.
I'm starting to think it's my screen protector.
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lol, I had insensitivity issues on the bottom of the screen way back, I use a displayed pin pad on lockscreen so I just tap a certain spot to unlock, I sometimes wonder why the digitizer register incorrectly.
flashing a different kernel helped, I'm using motleys.
Have had this problem since launch, im on stock rooted, maybe its a certain app?
If anyone wants to compare their apps with me to find a similar problem, shoot me a pm

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
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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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Click to expand...
Click to collapse
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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Symbols are back to front

Something weird is going on with my Nexus 4, I woke up this morning and all my icon locations are back to front! What I mean is up the top where the symbols on the right hand side of the screen where battery, reception and Wifi symbols usually are, they're now on the left side and the 3 buttons on the bottom are inverted and back to front. I'll upload a couple of screen shots to help explain.
As you can see also when I go into settings everything is opposite too.
Even scrolling through my apps I have got to swipe from left to right!
Anyone know how to fix this problem?
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Osborn82 said:
Something weird is going on with my Nexus 4, I woke up this morning and all my icon locations are back to front! What I mean is up the top where the symbols on the right hand side of the screen where battery, reception and Wifi symbols usually are, they're now on the left side and the 3 buttons on the bottom are inverted and back to front. I'll upload a couple of screen shots to help explain.
As you can see also when I go into settings everything is opposite too.
Even scrolling through my apps I have got to swipe from left to right!
Anyone know how to fix this problem?
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Have u tried simply rebooting it/
Also, is ur N4 rooted?
Yes I have tried rebooting it several times and no it's not rooted. Also, the most annoying thing with this problem I forgot to mention is the 3 buttons on the bottom are not responsive either. I've turned on "show touches" in developer settings and it seems that the very bottom of the screen is not registering touches. If I want to use the buttons I have to flip screen to landscape and move the buttons to the top of the screen.
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Another screenshot
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And another
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Osborn82 said:
And another
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Click to expand...
Click to collapse
for the buttons change language, reboot,test them,change language back
Osborn82 said:
And another
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Click to expand...
Click to collapse
Maybe it's an accessibility option? Check in Settings>Accessibility.
If found any seem to solve your issue, the most sure way to solve it is to flash a factory image. Check out efrants guide.

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