Database Users

Screen tearing fix?

I remember reading a few days back about people having issues with screen tearing. My screen will display a symptom where it has a jagged line shoot across the center area of the screen real fast and then go away. I was wondering if anyone found a solution to that?
Sent from my Nexus 7 using xda premium

chrisjm00 said:
I remember reading a few days back about people having issues with screen tearing. My screen will display a symptom where it has a jagged line shoot across the center area of the screen real fast and then go away. I was wondering if anyone found a solution to that?
Sent from my Nexus 7 using xda premium
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Click to collapse
No progress has been made, yet. Some think it will be fixed in a software update. When I notified Google support of the issue, they thought it was a hardware problem, but if several people have the issue, maybe it's software.

I'm hoping it is fixed in a software update. That is literally the only issue I have with the tablet.
Sent from my Nexus 7 using xda premium

chrisjm00 said:
I'm hoping it is fixed in a software update. That is literally the only issue I have with the tablet.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Yeah I hope so too, but I already have a replacement on the way. I have some other issues with mine though that I felt warranted getting a replacement.
Does the tearing happen to you all the time or just in certain apps? It only happens on mine when I'm playing music. It will show up for a split second as a quick horizontal line then disappear. The line appears in different areas of the screen each time. I notice it the most when it happens in Chrome, but I've seen it on the homescreen and in other apps as well.

Mine happens frequently throughout the ui. Xda app, chrome, everywhere really. If it is a software issue though there really is no point in exchanging. It seems to happen more frequently in an app with a light background.
Sent from my Nexus 7 using xda premium

I have this problem as well.. I only notice it in tapatalk though.. I'm not sure If its because I use tapatalk all the time or what..
Sent from my Nexus 7 using Tapatalk 2

Mine happens in chrome pretty regularly as well. Could it be something with the video drivers for this thing?
Sent from my Nexus 7 using xda premium

So apparently it was a bad kernel that I was using that caused the problems. Flashed a completely stock build and the problems are gone. To the people that chimed in and said they had the issue, are you on a stock ROM or did you change that and the kernel?
Sent from my Nexus 7 using xda premium

I've noticed this, but it's only happened twice (so far), Once was whilst using chrome, the other time just sat on the homescreen. I'm currently using stock.
(Not too worried, just as long as it's not a line of pixels about to give up the ghost as some other people have had).

chrisjm00 said:
So apparently it was a bad kernel that I was using that caused the problems. Flashed a completely stock build and the problems are gone. To the people that chimed in and said they had the issue, are you on a stock ROM or did you change that and the kernel?
Sent from my Nexus 7 using xda premium
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Click to collapse
Happens to me on stock rom. My N7 is not rooted or unlocked.

Pretty sure this only happens when you force GPU acceleration. I had the same issue, turned it off, and never saw it again.
Of course I love GPU acceleration too much to leave it off, but a jagged line every once in a while is not a deal-breaker for me.

11RJB said:
Pretty sure this only happens when you force GPU acceleration. I had the same issue, turned it off, and never saw it again.
Of course I love GPU acceleration too much to leave it off, but a jagged line every once in a while is not a deal-breaker for me.
Click to expand...
Click to collapse
Glad it worked for you, but I don't have that option on nor any other's enabled in the development menu. Regardless, the issue persists.

Is there anyone else having this issue?
I received a replacement today, but I couldn't escape defects on that on that one either. I'm trying to figure out if I should hang in there for a fix on the screen tearing/horizontal line issue, or if I should just send both back and call it a day.
Sent from my Nexus 7 using xda app-developers app

I just found this thread. I have the same issue. I'm on stock kernel, unlocked/rooted, and stock rom. I don't have GPU acceleration forced.
Any further ideas? Could be a driver issue.
Sent from my Galaxy Nexus using Tapatalk 2

phydo said:
I just found this thread. I have the same issue. I'm on stock kernel, unlocked/rooted, and stock rom. I don't have GPU acceleration forced.
Any further ideas? Could be a driver issue.
Sent from my Galaxy Nexus using Tapatalk 2
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Click to collapse
People here think the screen flickering issue could be resolved in software, but I'm not sure about the issue we are having.
I might go through the unlocking process just to see if the horizontal line stuff happens on other roms/kernels.
I really hope it can be addressed in a software update. I just struck out on my 3rd nexus. All of them have screen defects. All have had other issues like creaking and slight screen lift, but those are a lot less of a problem to me. The original one is ok except for the horizontal line issue. My two replacements each have dead pixels and dust in central areas of the screen.
This is ending up to be a very tiring and disappointing pursuit.

If it's a software problem it's likely to be in the tegra3 proprietary driver blobs. If this is indeed the case, changing rom and/or kernel will make little difference (because they share the same blobs).
It might be possible to work around the issue outside of the blobs but its likely only nvidia can fix the root cause.
Sent from my SGH-I777 using Tapatalk 2

sam3000 said:
If it's a software problem it's likely to be in the tegra3 proprietary driver blobs. If this is indeed the case, changing rom and/or kernel will make no difference (because they share the same blobs).
Sent from my SGH-I777 using Tapatalk 2
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Click to collapse
Hopefully someone at Google watches some of these threads. I have 2 nexus 7s with this issue. Thanks for trying to save me the time of trying a different ROM/kernel, but I might still try a CM10 build for kicks.

My first tablet had one dead pixel and it had this issue too. My second one is perfect except for this problem. It probably does have to do with the tegra 3. I hope its a software issue because this one is perfect except for that one problem. I'm not rooted nor unlocked and no force GPU rendering either. It only occurs on some apps with mine. Tapatalk, facebook and barely ever on chrome. I haven't seen it on any games or video nor on the home screen. There should be a place to report this to Google... I doubt they are searching through xda looking for every little problem. I've had this issue for a while and have been searching specifically for bit and just found it today. Also I never see it in horizontal mode.
Sent from my Nexus 7 using Tapatalk 2

I have this issue too and I think it's likely to be a driver issue as it appearance seems random and sporadic in frequency, but it's always really hard to tell about these things.
In any I'm guessing some people just don't notice this issue and thus haven't really talked about it. But it sure is discomforting seeing it.

I seem to suffer from this too.. Everything is stock on mine, no mods, no flashes no unlocks.. It appears to be worse when its been on for a long time.. Wondering if its heat related?

calibrate screen sensitivity?

Hello everyone,
Curious if anyone is having the same issue as me? I have tried multiple roms, stock, with and without kernels.
I am having some touch issues. Either I have to press harder then normal at times or multiple times for my press to register. Its getting quite annoying. Not sure if this is a defect or if i can modify something within the system files to make the screen more sensitive or if there is even a way to re-calibrate my sensors/screen?
Thank you in advance,
DFL

Did you figure out what was wrong? ... It just started to do the same with me... Even to right this was a pain in the a$$...
Sent from my Nexus 7 using Tapatalk 2

ancostel said:
Did you figure out what was wrong? ... It just started to do the same with me... Even to right this was a pain in the a$$...
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
No, im still fishing around for a solution.
Any input would be appreciated.
Cheers
DFL

Well, I've rebooted in recovery mode, wiped the cache and it's back to normal now... I know it's just a temp solution, but you might wanna give it a try
Sent from my Nexus 7 using Tapatalk 2

ancostel said:
Well, I've rebooted in recovery mode, wiped the cache and it's back to normal now... I know it's just a temp solution, but you might wanna give it a try
Sent from my Nexus 7 using Tapatalk 2
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Click to collapse
hmmm... wiping cache fixed? i bet systemcleanup active would help then. I will take your advice and try out that app systemcleanup on my tab. I use on my phone Nexus S just didnt think the N7 would need it due to its specs.
Thanks mate, ill give it a go.
DFL

I had the same problem. So annoying. Take it back dude its detective.
Sent from my Nexus 7 using Tapatalk 2

I have the same issue but sparingly, turning my screen off and on fixes it for me tho.
Sent from my Nexus 7 using XDA Premium HD app

Fufu_the_Great said:
I have the same issue but sparingly, turning my screen off and on fixes it for me tho.
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
Has anyone decided if this is a hardware or software problem? I've started having the same issue. Turning off the screen sometimes fixes it for me but not always. A reboot always fixes it.
Like just now... I was playing Zenonia 2 and in the middle of a battle I suddenly couldn't get the touchscreen to respond. I hit power to lock the device and immediately tried to turn it back on with power again... but I couldn't even get the unlock screen to work. I set it down for about 30 seconds and when I tried again it was fine. I pulled the game back to the top and it worked fine.
When this happens the "soft" buttons (back, home, etc) always seem to work just fine, so I'm inclined to say it's really a software problem.
Running stock + root.

My thought is that it has to be a hardware issue, or if everyone with the issues is rooted than it could be from the root. My device has fantastic response however I am not rooted.
Sent from my Nexus 7 using xda app-developers app

Uh60m Pilot said:
My thought is that it has to be a hardware issue, or if everyone with the issues is rooted than it could be from the root. My device has fantastic response however I am not rooted.
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
I would think hardware as well, but the home and back buttons always work and they use the same touch surface...

I got the same thing here and rebooting appears to fix it. Sometimes it is so bad that I cannot move icons from one screen to another.

Did you guys try flashing stock 4.1.1 using fastboot or the toolkit? If that does fix it then its probably hardware problem.

skinfreak said:
I got the same thing here and rebooting appears to fix it. Sometimes it is so bad that I cannot move icons from one screen to another.
Click to expand...
Click to collapse
I had the same problem ! solved by turning off the screen and turn on it

I have the same issue and mine isn't rooted yet so I don't think it is an issue with that. A wipe of the device doesn't help but a reboot usually does. This is my second N7 as the first was a warranty replacement for the headphone jack issue. The first never had the issue so I think it is an issue that should be addressed. I am outside my 14 days so I might have to go through Asus now.
---------- Post added at 01:23 PM ---------- Previous post was at 12:50 PM ----------
For what it is worth, I just called Google and they are going to send me a new one. The lady that assisted me stated that she has had a few complaints with this issue and that they just replace it. N7 #3 should be on the way in a couple days. For some reason she said that the device wasn't set up properly in my profile so it will add a couple days to the process because of the long weekend.
Not a big deal. I have lived with it for a while now. At least they appear to be taking care of it and I wasn't transferred to Asus. At least yet.

[Q] Random vertical "black line" flash, not permanent, nor dead pixels?

I've not seen it mentioned, but I want to know if others have noticed.
So far all 3 of my CK60 devices have this. Originally I thought it might have been the app Thumb Keyboard. But my other two without the app display the same.
At about 1 inch from the right side edge of the display portion of the screen, a vertical black line will flash. I've only really noticed it while browsing. Not entirely sure it's not just an issue in Chrome, as I also have the stock ICS browser installed, but only use that to view flash videos.
Each has been unlocked and rooted, it's so random and happens so rarely that I couldn't remember to diagnose it pre-root/unlock..
Anyone else notice this?
Would like to know if something common, before erasing my unit to test clean stock.

I will get the random black line flash on some apps. Such as XDA, and chrome. Doesn't ever happen on a homescreen, or in game or anything.
Don't bother with wiping, it won't do you any good.

Same here. Think it's a software problem.
Sent from my LG-P999 using xda app-developers app

regalpimpin said:
I will get the random black line flash on some apps. Such as XDA, and chrome. Doesn't ever happen on a homescreen, or in game or anything.
Don't bother with wiping, it won't do you any good.
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Click to collapse
redmonke255 said:
Same here. Think it's a software problem.
Sent from my LG-P999 using xda app-developers app
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Click to collapse
Thanks for chiming in guys, appreciate it, it doesn't "really" bother me, but it is a "glitch". Good to know.

delete me

Yea I have the same problem also this is the second replacement.... screen flicker on the first now on this I get the screen flicker and lines on CK60 device

I flashed Motleys kernel for the performance but it also got rid of the flashing black line. I didn't really think about until yesterday when I realized I haven't seen it happen in a couple days now ever since I flashed it.
Sent from my Galaxy Nexus using Tapatalk 2
It use to flash on my tapatalk, Facebook and chrome browser but the kernel seemed to fix it.

What are we referring to as CK60
Sent from my Nexus 7 using Tapatalk 2

The SSN on the box.
Sent from my Nexus 7 using xda app-developers app

All 3 of my n7s have it. So its software right? Because this one is perfect hw wise other then that and I want to knw if its a defect or will be fixed with a ota
And I only notice them on tapatalk or chrome
Sent from my Nexus 7 using Tapatalk 2

?!?!?!?
Sent from my Nexus 7 using Tapatalk 2

Definitely software.
Sent from my LG-P999 using xda app-developers app

I noticed it first day I started playing with my Nexus 7.
I also have the screen flickering problem, but I'm pretty sure they are completely unrelated.
Hopefully there will be an update to fix it.

I flashed the motley kernel and it stopped.
Sent from my Nexus 7 using Tapatalk 2

PROlific666 said:
I flashed the motley kernel and it stopped.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Can I get a link to that
Sent from my Nexus 7 using Tapatalk 2

PROlific666 said:
I flashed the motley kernel and it stopped.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
+1
Sent from my Nexus 7 using Tapatalk 2

Flashing black lines?!?!?
Yep, same thing here. It isn't a huge deal, as it's just a split second flash. My only concern is that it may get worse as time progresses. I REALLY hope Google is working on some patches to address some of these Software issues.
Other than that, I am very satisfied with my Nexus 7, it's an excellent buy!
Google, please, you guys need to really tighten up your SQA department!
-Android1126-

Make sure to read the instructions before doing this. It does take care of the black line for me I haven't seen it in over a week now.
http://forum.xda-developers.com/showthread.php?t=1775798
Also over clocking isn't needed to get rid of the line flash. It is a nice feature to have. And for the GPU I would suggest the 484... Also be sure to give motley a "thanks" for his work.
Sent from my Nexus 7 using Tapatalk 2

I am seeing the same thing on my C70. I also sent in a support request to ASUS and directed them here. Will post back if/when they reply with something useful.

Noticed a horizontal black line flash across the bottom while in portrait mode. Happened while on xda a few days ago. Haven't seen it since
Sent from my Rooted, LazyPanda, White "Destroy Mode" Evo

Lockscreen freezes after sleep

Hello!
Just got my Nexus 4 and I am loving it. But my Lockscreen sometimes freezes when I hit the power on button, or it is at least unresponsive. I have to turn off the screen and turn it on again to unlock. This happens everytime the phone has been locked for a while.
Any fix for this issue or should I get my phone replaced? Seems software related
Sent from my Nexus 4 using XDA Premium HD app

No one else has this issue?
Sent from my Nexus 4 using XDA Premium HD app

I have the same issue and wants to know the reason.

I have the same problem, and I think i have found a way to replicate the issue.
1. Turn off the screen.
2. Wait around 5 seconds.
3. Put three fingers on the screen at the same time.
4. And immediately without moving the fingers turn on the screen.
At this time the touchscreen doesn't respond or it has some kind of lag and you have to reunlock the screen to make it work again.
Can anyone test this?
Sorry for my english.

csanz91 said:
I have the same problem, and I think i have found a way to replicate the issue.
1. Turn off the screen.
2. Wait around 5 seconds.
3. Put three fingers on the screen at the same time.
4. And immediately without moving the fingers turn on the screen.
At this time the touchscreen doesn't respond or it has some kind of lag and you have to reunlock the screen to make it work again.
Can anyone test this?
Sorry for my english.
Click to expand...
Click to collapse
This doesn't have any effect on my phone. I'm not sure if I'm doing it right though lol.
Sent from my Nexus 4 using Tapatalk 2

Mine neither
Sent from my Nexus 10 using XDA Premium HD app

Same
Ive been having this issue for a while, even through the most recent update. I tried the three finger thing, and it doesnt freeze it. Anyone find any fixes yet? Maybe it's an app?

Happens to me too, I thought I was the only one.
Sent from my Nexus 4 using Tapatalk 2

csanz91 said:
I have the same problem, and I think i have found a way to replicate the issue.
1. Turn off the screen.
2. Wait around 5 seconds.
3. Put three fingers on the screen at the same time.
4. And immediately without moving the fingers turn on the screen.
At this time the touchscreen doesn't respond or it has some kind of lag and you have to reunlock the screen to make it work again.
Can anyone test this?
Sorry for my english.
Click to expand...
Click to collapse
I can reproduce using this method. It's very annoying when it happens in the wild though, I was unable to unlock at all the other day, had to power off and on the device. Also wasn't able to answer a call !!!
---------- Post added at 04:57 PM ---------- Previous post was at 04:19 PM ----------
Please can people having this issue visit:
https://code.google.com/p/android/issues/detail?id=53245
and vote it up!

Thanks for this thread. Same problem
Sent from my Nexus 4 using Tapatalk 2

i have the same issue too. I thought my unit was defective.

So is this a software or hardware issue?

Hi,
I seem to have the same issue. It renders my phone useless. While trying to figure out what exactly is affecting it. I found if i enable under developer option >> input >> show touches the next time this issue happens i can see that the phone screen is constantly being touched (w/o having any finger on screen).
I am also awaiting any solution for this issue.

Let's just hope that this can be corrected with software.
Sent from my Nexus 4 using Tapatalk 2

FatalityBoyZahy said:
Let's just hope that this can be corrected with software.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Please make sure you vote here https://code.google.com/p/android/issues/detail?id=53245
So google takes notice
Sent from my cm_tenderloin using Tapatalk HD

Anyone else sometimes experience touches not registering on the touchscreen?

Randomly it seems, when I tap on the touchscreen on my new N7 2013, nothing happens, and I have to repeat the process several times before my touches are registered.
Does anyone else have this problem?

Macmee said:
Randomly it seems, when I tap on the touchscreen on my new N7 2013, nothing happens, and I have to repeat the process several times before my touches are registered.
Does anyone else have this problem?
Click to expand...
Click to collapse
See my thread titled " Another touch issue, with reproducible steps".

Go into developer options and enable "Show touches" and "Pointer location"
If you see your touches registering but the app isn't responding, it is probably a problem with the app. If you see random stuff on the screen, probably a problem with the digitizer or digitizer in combination with the driver/software in this release.

Ive experienced this a few times and it seems to be a software /hardware interface issue with particular custom rom builds ive installed. I know the touchscreen hardware itself was fine when I forced reboot into recovery and the touchscreen worked as normal in custom recovery.
Sent from my Nexus 7 using Tapatalk 2

Is everyone experiencing this or is it only certain units. Mine does it even when holding and firmly pressing. Gonna take it back and try another if its not all.
Sent from my SPH-L720 using xda premium

dcaplinger76 said:
Is everyone experiencing this or is it only certain units. Mine does it even when holding and firmly pressing. Gonna take it back and try another if its not all.
Sent from my SPH-L720 using xda premium
Click to expand...
Click to collapse
Are you running yours stock
Sent from my Nexus 7 using Tapatalk 2

I am and I'm experiencing same problem I have 32gb stock and installed all updates... Actually did not have problem till update 4.3
Sent 4rm my Paranoid Nexus 4.3 LTE...

kayone73 said:
Are you running yours stock
Sent from my Nexus 7 using Tapatalk 2
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Click to collapse
Yeah totally stock.. this was happening last night and actually today it hasn't happened in the 20 minutes I messed around while working. Gonna hang onto it for now unless it creeps back up
Sent from my SPH-L720 using xda premium

dcaplinger76 said:
Is everyone experiencing this or is it only certain units. Mine does it even when holding and firmly pressing. Gonna take it back and try another if its not all.
Sent from my SPH-L720 using xda premium
Click to expand...
Click to collapse
I wouldn't. If you had a Verizon Galaxy Nexus when it came out, you'll remember that it had the same issue with certain points on the screen (lower right hand corner) when using multi-touch applications. The entire screen would either stop seeing input or start going erratic and creating faulty inputs that weren't happening. It isn't a hardware issue, proven by some users experiencing it and some not. The only time I've experienced it is in the Netflix application while trying to choose a show to watch. I re-boot the application and viola, no more issue. Some in this thread even are stating that they only see the problem sometimes after getting the 4.3 update.
In short, it's software and not hardware.

Same issue when not touching with both hands somehow (like if the tablet is flat on a table).
Sent from my Nexus 7 using xda app-developers app

Haven't had a problem with mine. I just got it today, and it's worked like a charm. I bought mine from Gamestop if that helps any.