[Q] N7 Screen Artifacts - Kitkat & Lollipop - Nexus 7 Q&A, Help & Troubleshooting

Anyone else get screen artifacts on thier N7 device running Lollipop?
Look like white lines (mostly broken), sometime maybe slightly coloured, appear randomly on the screen.
Happens mostly when rotating the device, see them on the lockscreen & in my case they appear briefly, although I've seen them on the recents screen as well going across the app window.
Seems Google never was notified or they couldn't fix the issue as the same issue was reported on Kitkat - http://forum.xda-developers.com/showthread.php?t=2542667
See post #8 of that thread for a screen cap of the artifacts.
Anyone know a fix? Is it kernel or rom issue or something else?

Related

[Q] Screen Jittering When Scrolling

Hi. I've recently noticed more screen jittering and periodic flickers when I'm scrolling. I tend to keep my thumb on the screen and slowly scroll when I'm reading. The problem isn't as bad if I just tap quickly to scroll, but if I do it slowly, text is shaky or almost shimmering.
Anybody else get this effect when scrolling? Opinions on whether this sounds hardware or software related?
Samsung Focus 1.3
Recently updated to Mango
Used almost a year
Thanks.
depends if you are talking about the home screen or in applications...regardless it is a software issue.
You didn't mention if you have a microsd card installed and how full it is.
Secondly, this is known to happen immediately after reset, and is somewhat normal.
Background apps might also affect performance.

GT-I9500 Bug - Lock-screen appears for a split second

Hello everyone,
I've been having this problem ever since I bought my phone 6 weeks ago.
I'm currently running XXUBMEA rooted stock ROM. And I've had this bug even before updating.
I searched the forums here but couldn't find anyone complaining about it, although I know a friend or mine who has the phone and is also facing it.
Sometimes the Lock-screen appears for a split second, during that, the brightness also goes to max. If it happens while I'm typing somewhere, the keyboard disappears, and I have to tap on the text box to make it appear again.
Also, sometimes it happens when I'm playing a game in landscape mode, the screen rotates to portrait just less than a second, and returns to normal.
It's very annoying, it happens to me daily, I'd say about 5-7 times.
Anyone else facing this?

Weird burn-in issue on cm13

Hello, been visiting the boards for a long time, but I didn't register because I had nothing to contribute really. <.<
I currently have a i9505 running on cm13 6.0.1.
Last night when I wanted to reply to a text I used the right side lock screen shortcut that's set to messaging the circular motion thingy messed up the edge of my screen. (I didn't realize until later that it's not actually a hardware issue if you ask me.)
Some pictures, screenshots don't register anything:
CAN'T POST IMAGES because I'm a new user. :/
It's on imgur, with /a/Murqy extension after .com. Album of three images.
Messaging shortcut thingy on the second screen is a lock-screen burn in, as is lock screen in the middle of the first screen.
Sorry for the garbage quality screens, I don't have any other spare phone except for the ancient Sony Ericsson with me atm.
At first this obviously looks like some display issue or a burn-in. I've checked the display, it has absolutely no scratches.
I've also read about the quality issues of some S4 phones and glass+display being glued together which can lead to yellowish tint. And how display breaks easily because of bad build quality and too much pressure being put on the display itself.
Anyhow, ever since that brown/yellow thing appeared the right/left lock screen shortcut animations stopped showing. And that thing is the exact size of the lock screen shortcut animation.
Also, those three burned in lock screen buttons, phone/unlock/messaging aren't really burn ins. When I try to press any of them in the bugged state when the screen is already unlocked, the dropdown menu activates. Also when I use dropdown menu myself, those 3 buttons are instantly gone without leaving a trace. And when the dropdown menu is activated, the yellowish corner translates from the background to the menu itself. Icons on the home screen in the background aren't yellow anymore, but icons in the dropdown menu are.
So, I'm completely at loss what to do here. I don't wanna use one of those burn in removal apps to mess my phone up, I don't have a warranty because I got it used like less than a month ago and everything was working fine. And I don't wanna take it to a repair shop because they'll just tell me the display is messed up.
There's just too much coincidence here for me to believe it's a classic case of display burn in.
Why wouldn't lock screen shortcut animations show up anymore if that was the case? Even on the left side which is completely fine. And it just appeared out of nowhere when I used one of those shortcuts. As if animation is stuck in there.
Sorry for the wall of text, but wanted to explain it in detail as I couldn't find anything similar anywhere else. <.<
Perke- said:
Hello, been visiting the boards for a long time, but I didn't register because I had nothing to contribute really. <.<
I currently have a i9505 running on cm13 6.0.1.
Last night when I wanted to reply to a text I used the right side lock screen shortcut that's set to messaging the circular motion thingy messed up the edge of my screen. (I didn't realize until later that it's not actually a hardware issue if you ask me.)
Some pictures, screenshots don't register anything:
CAN'T POST IMAGES because I'm a new user. :/
It's on imgur, with /a/Murqy extension after .com. Album of three images.
Messaging shortcut thingy on the second screen is a lock-screen burn in, as is lock screen in the middle of the first screen.
Sorry for the garbage quality screens, I don't have any other spare phone except for the ancient Sony Ericsson with me atm.
At first this obviously looks like some display issue or a burn-in. I've checked the display, it has absolutely no scratches.
I've also read about the quality issues of some S4 phones and glass+display being glued together which can lead to yellowish tint. And how display breaks easily because of bad build quality and too much pressure being put on the display itself.
Anyhow, ever since that brown/yellow thing appeared the right/left lock screen shortcut animations stopped showing. And that thing is the exact size of the lock screen shortcut animation.
Also, those three burned in lock screen buttons, phone/unlock/messaging aren't really burn ins. When I try to press any of them in the bugged state when the screen is already unlocked, the dropdown menu activates. Also when I use dropdown menu myself, those 3 buttons are instantly gone without leaving a trace. And when the dropdown menu is activated, the yellowish corner translates from the background to the menu itself. Icons on the home screen in the background aren't yellow anymore, but icons in the dropdown menu are.
So, I'm completely at loss what to do here. I don't wanna use one of those burn in removal apps to mess my phone up, I don't have a warranty because I got it used like less than a month ago and everything was working fine. And I don't wanna take it to a repair shop because they'll just tell me the display is messed up.
There's just too much coincidence here for me to believe it's a classic case of display burn in.
Why wouldn't lock screen shortcut animations show up anymore if that was the case? Even on the left side which is completely fine. And it just appeared out of nowhere when I used one of those shortcuts. As if animation is stuck in there.
Sorry for the wall of text, but wanted to explain it in detail as I couldn't find anything similar anywhere else. <.<
Click to expand...
Click to collapse
I'm not familiar with burn-ins, but since it's a used phone the probability of the screen being messed up is high.
If it really is a software glitch, the only option would be to flash a different rom. If it continues, flash a stock rom via Odin. If the problem still persists, then it's most probably a hardware issue.
Remember, the flashes have to be clean flashes. As clean as possible. Dirty flashes won't help, especially when trying to find the root of a problem.
I've had it for nearly a month now and I didn't have a single issue.
As I've said, it's probably not a burn in because it just appeared like that due to one animation.
And since it's also there when I boot into recovery I don't think flashing a new ROM would help.
..
MuF123 said:
http://i.imgur.com/j4t9fEA.jpg
Is this gradient (around the icon) visible to naked eye? This is really nasty Just a guesswork: this could be one of failure modes for amoled. I have 8 weird rectangles burned in over the whole screen and really don't know where they came from.
Check this: http://forum.xda-developers.com/showthread.php?t=2603039 evidently even light from outside can burn in your screen.
Click to expand...
Click to collapse
Yea, it's visible.
That's the far right shortcut on the dock.
But the weird thing is that it just disappears if I try to click it.
Same goes for the lock screen shortcuts as I've said already, that's why I'm not sure it's a regular case of screen burn.
And when I pull down the dropdown menu, the color of the desktop goes back to normal, but dropdown menu icons in the bottom right turn yellowish, as if the tint translated to the screen that's being used at that moment.
After I realized that I tried to mess around with color saturation and brightness.
Changing brightness had no effect, lowering it would just make that corner darker, but as I dropped down color saturation on all of the RGB components more and more it became less and less noticable.
But the buggy lock screen shortcuts still puzzle me. They remain on the desktop after I unlock the phone, but are instantly gone as soon as I click them.
If it wasn't for that, I'd be pretty sure the screen broke because of bad build quality. I read about the display having too much pressure put on it, somewhat of a design flaw.
Gonna try that burn in app, what's the worst thing that could happen to a broken display. <.<
..
MuF123 said:
Does it disappear if you press and hold without actually doing something? Make a screenshot and display the image fullscreen as if it was lockscreen, will it happen again? While showing the screenshot, press and hold on the icon, any change?
Does all of the gradient disappear or just the icon burn in?
Click to expand...
Click to collapse
If I hold it, it actually works (eg taking me to messages or phone menu as if the screen was locked). It doesn't appear on screenshot, only after I unlock the phone. That's what's puzzling me, it's not actually burned in, it looks like an issue with the display when I change screens (from locked to unlocked or switching from desktop to broswer like in that screenshot with the burned in icon, as soon as I click it it also disappears, same as shortcuts).
And gradient gradually disappears as I lower the color saturation. Disappears fully at around 30% for all RGB components. But brightness is way too low then.
..
MuF123 said:
I know, I just wanted you to make your phone display the same content as if it was locked - but now the image would be screenshot and not the actual lockscreen... I know this sounds really wild, but I don't see any better troubleshooting ideas here
Click to expand...
Click to collapse
I get your point, like I'm leaning towards display issue but not a classic one but a weird one because it has issues with switching screens.
Idk, I'm gonna roll with this for a couple more days, if it gets worse it's definitely the display.
..
MuF123 said:
Just out curiosity - maybe you could make a video how this behaves
Click to expand...
Click to collapse
Maybe tomorrow if I find a half-decent camera.
Actually, I made a screencast.
https://media.giphy.com/media/3oGRFj88fgqgT3vWrS/giphy.gif
As you can see, after I unlock the screen, all three shortcuts are burned in.
When I press the burned in unlock icon it just briefly opens the dropdown menu (it wasn't me opening it at that point, when I clicked the lock screen icon in the middle)
Yellow tint in the bottom can't be seen on the video.

G4 Digitizer problem?

I have a Moto G4 that has had the touch screen become very erratic lately. This issue appeared shortly after a factory reset. The phone is stock, recently OTA updated to NPJ25.93-14.7. It frequently freezes and won't respond to touches of apps or the home/back/recent buttons, and won't side scroll to the next screens properly. Sometimes random apps launch on their own without any touch, and if you try to quit them with the back button they keep relaunching. The problem is intermittent.
I activated "Show Taps" in Developer Options and when the problem is happening there is a tap dot near the lower right side of the screen. It bounces up and down a little bit and vibrates sometimes. When this dot is visible tapping on anything else like app icons or buttons usually has no effect, however the taps are shown on the screen. If I hit the power button to make the screen go black it will sometimes recover when I reopen the display, other times it takes a reboot.
Wondering if it's a hardware issue, a guy at a Verizon store who seemed to know more than most said it was a faulty digitzer--it's seeing touches where there are none. I've replaced displays successfully before, would just like to have a confidence level that the digitzer is really bad before doing that, as opposed to a software or other hardware issue. Any ideas about problems that might cause this problem, like other hardware or a corrupted OTA? Seems very hardware-ish to me, but I'm no expert.
I have Drive links to a couple of short videos on the symptoms, can send links. Much appreciate any insights.
Mine has that issue as well. It will spam the 9 key on the unlock screen or anything in that spot if an app is open or what is on that spot at the home screen. I have to double unlock the phone to fix it. I guess turning the screen on and back off resets it for that session. But it's mostly every time the screen goes dark and comes back up I have to turn the screen off and back on to use the phone.
I had a similar problem and was able to send it in under warranty and get a replacement phone
G4 Digitizer or ghost touch
Apparently this is called Ghost Touch issue, and affects many phones. One solution tried is to disable Battery Optimization for System UI and Google Now Launcher in Settings>Battery>Battery Optimization. That seemed to cure it for a week or so, but the problem returned today. I can sometimes recover form it by hitting the power button to blank the screen and then reopen. Other times it requires a reboot. I see all kinds of alleged solutions out there from dimming the brightness to removing tempered glass protector to using a slow charger, but those don't seem like real fixes but workarounds (if they even work at all). Any other ideas?

Intermittent Screen Glitch (Row of stuck pixesl)

I just got an 8 Pro and have seen an intermittent issue with the screen whereby when scrolling I see a row of what looks like stuck pixels.
I was in QHD and 120hz and the row was in the middle of the screen stretching probably half way across the screen, it displayed for a second or 2 and then disappears. I tried FHD plus and it was replaced with a similar line at the very bottom of the screen. As I say it is intermittent and right now it is all fine, if it happens again I'll film it (screen recorded obviously did not pick it up)
Has anybody else seen this? Right now I am unsure if this is a hardware issue that warrants me returning it or a software glitch linkled maybe to 120hz??
Thanks
Ok, it is intermittent in general use but happens all the time when waking the device. QHD example attached. If I drop to FHD+ then the issue moves to the very bottom of the screen rather than the middle.
Where / when did you buy the phone?
It's certainly not normal behaviour.. does this occur in any other circumstances?
Also this should be in Q&A
Amazon.co.uk
It is consistent when waking the phone and intermittent in general use. The odd thing as I say is it appears in a different place when I switch to FHD+.
arsenal74 said:
Amazon.co.uk
It is consistent when waking the phone and intermittent in general use. The odd thing as I say is it appears in a different place when I switch to FHD+.
Click to expand...
Click to collapse
That's odd, but I would certainly point my finger at hardware.
Amazon are solid with returns, give them a shout and get it swapped, definitely not right.
Also a first for me, haven't heard anyone report this

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