Database Users

Lines flash on screen

Occasionally, a horizontal or vertical line flashes on the screen very quickly and then disappears. Does anybody else have that? Is it anything to worry about, or does it not matter? Is it likely that a software update will fix this?
Thanks for any replies!

First, are you running a custom kernel or stock?
Sent from my Nexus 7 using xda app-developers app

I have not rooted my device. I have flash installed and Iplayer, but apart from that all my apps come directly from the Google appstore...
Sent from my Nexus 7 using xda app-developers app

StrangerWeather said:
Occasionally, a horizontal or vertical line flashes on the screen very quickly and then disappears. Does anybody else have that? Is it anything to worry about, or does it not matter? Is it likely that a software update will fix this?
Thanks for any replies!
Click to expand...
Click to collapse
Damn it! I was seeing this on occasion and hoped that if I just thought I was crazy I wouldn't have to acknowledge it. Now I see it's not my imagination. It happens only rarely and it's really just a blip, but it is indeed weird. I just unlocked/rooted last night though so I'll have to see if it still happens now...

Always happens to me, really only noticeable on mostly white screens like in xda app.
Sent from my LG-P999 using xda app-developers app

First device had this issue, took it back (for many reasons), and have not noticed that little "subliminal" black line anymore.

Happens to me too, so far only seen it in the xda app, and in my browser while waiting for a Page to load that is taking a while.... I'm currently waiting for an exchange because I have a slight screen lift issue, but I doubt it will fix this black line problem, it is probably standard on these things. I guess I can live with it
Sent from my Nexus 7 using xda app-developers app

I get it like once every 10 hours or so and only when using xda app or chrome for some reason.
Sent from my Nexus 7 using xda premium

Yep, I see it with tapatalk. Haven't noticed it with anything else just yet.
Sent from my SGH-I777 using Tapatalk 2

I also get it a lot when playing an online chess game. It seems related to the apps used. Don't know what to make of it...
Sent from my Nexus 7 using xda app-developers app

Could it be a memory leak or a GPU rendering issue as some have suggested? Many of us get this on the stock ROM with no developer menu changes.

I notice it too. I thought I was seeing things. It is not serious enough to give a crap though. I just hope it does not evolve into a worse issue.

It probably has to do with spotty Tegra drivers. I noticed it slightly on Chrome, but never on anything else.
Sent from my Nexus 7 using xda app-developers app

I've seen this quite a bit also. Seems most prevalent for me when I'm using the GPS Status & Toolbox app from EclipSim, except in that app the lines are white.

I think you guys are referring to screen tearing. I have seen it a few times to I think in chrome. Pretty sure its not a hardware problem.
Sent from my Nexus 7 using xda app-developers app

I haven't noticed it at all on the nexus. I have had this issue on my tf201 though.
Sent from my Nexus 7 using xda premium

Hmmm... seems this thread should be combined with the other regarding the same issue: http://forum.xda-developers.com/showthread.php?t=1791281

Yeah I get this too I'm hoping its a software issue it doesn't happen often but I seem to only notice it on tapatalk or the Facebook app. I haven't seen it on games or videos.
Sent from my Nexus 7 using Tapatalk 2

sam3000 said:
Yep, I see it with tapatalk. Haven't noticed it with anything else just yet.
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
I see this on occasion with the xda app. I haven't seen it all using anything else. I'm no overly concerned.
Sent from my Nexus 7 using xda premium

I get that in Tapatalk once in a while. I would guess its a coding thing and not a device defect.
Sent from my Nexus 7 using Tapatalk 2

[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.
Click to expand...
Click to collapse
redmonke255 said:
Same here. Think it's a software problem.
Sent from my LG-P999 using xda app-developers app
Click to expand...
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

Wavy screen?

Any one else have a jittery screen? Occasionally my screen seems to glitch and like... I don't know... Fizzle to the right kind of and then returns to normal. Is this a known issue? Any one else have the issue I describe? I can't tell if it's the phone or the firmware (Stock), and if resetting it will work out or not. I think it's the phone personally and could classify as a manufacturers defect. Any thoughts?
Sent from my XT907 using xda premium

Zero Computing said:
Any one else have a jittery screen? Occasionally my screen seems to glitch and like... I don't know... Fizzle to the right kind of and then returns to normal. Is this a known issue? Any one else have the issue I describe? I can't tell if it's the phone or the firmware (Stock), and if resetting it will work out or not. I think it's the phone personally and could classify as a manufacturers defect. Any thoughts?
Sent from my XT907 using xda premium
Click to expand...
Click to collapse
That started happening to me too; I just thought it was an app freaking out. Every now and then it just jiggles left and right, as if it were shaking. Heck, I even had it happen in TWRP w/ Safestrap when doing a backup.
You have me worried about my own device now, lol.
I am on 4.1.2 and have not seen this issue before the update. I am rooted, but not unlocked.

Yea happens to me too never happened until the update
Sent from my XT907 using xda app-developers app

It happened to me before the update but not at all this bad, nor as noticeable.
Maybe it is software related them. This came with 4.1.1 just updated the other day and now it is definitely worse.
Sent from my XT907 using xda premium

Mine does it as well. Looks similar to how the screen shakes when you enter the screen lock password incorrectly but seems to be random. Most likely a software issue.
Sent from my ASUS Transformer Pad TF300T using Tapatalk HD

Yeah, but, it happens way too much for it to be acceptable or normal. Simple as that, my phone should not be twitching.
It went from happening once or twice every other day, to happening more than ten to twenty times a day. That's unnecessary, and unbelievably annoying.
I think I'm going to call Motorola.
Sent from my XT907 using xda premium

Same here. mines rare though
Sent from my XT907 using xda app-developers app

Happens to me as well, both at the lock screen and when using the phone, ( like browsing the internet) Most likely software related and not something to worry about

Mine does it too, seems to be common with this device.

I would assume firmware too, due to the above report of it happening in recovery.
It should still be brought to Motorola's attention in my opinion. It seems to be getting worse on my device though.
Sent from my XT907 using xda premium

Happening to me to. I'm completely stock, non-rooted, running the latest OTA 4.1.2
Seems to be getting worse too

Happening to me since the update as well. Stock unrooted.
Also seems to be increasing in frequency.

Yeah my frequency is increasing as well here, and I'm thinking it's firmware / hardware, not software. Driver issue maybe? But I'm thinking it's mostly hardware related since most seem not to be having the issue we have, leading me to believe it's a manufacturer's defect
Sent from my XT907 using xda premium

Zero Computing said:
Yeah my frequency is increasing as well here, and I'm thinking it's firmware / hardware, not software. Driver issue maybe? But I'm thinking it's mostly hardware related since most seem not to be having the issue we have, leading me to believe it's a manufacturer's defect
it doesnt happen on cm10
Click to expand...
Click to collapse

ifrankie10 said:
Zero Computing said:
Yeah my frequency is increasing as well here, and I'm thinking it's firmware / hardware, not software. Driver issue maybe? But I'm thinking it's mostly hardware related since most seem not to be having the issue we have, leading me to believe it's a manufacturer's defect
it doesnt happen on cm10
Click to expand...
Click to collapse
Hmm, so other ROMs are unaffected. Interesting. Weird since mine does it in safe strap (twrp), but I guess its a very low level driver freaking out.
Sent from my XT907 using xda app-developers app
Click to expand...
Click to collapse

Not sure really. It's like to switch to another Rom to test if it happens on non stock on my phone... But I'm not doing anything to it until I see a Rom that I feel is stable enough and aosp based.
Sent from my XT907 using xda premium

Hey, just curious if anyone with this problem has used the xfinity app for watching video at all... I now have a similar problem on this s3 im using after using xfinity app
Sent from my SGH-T999 using xda premium

It was happening to me after using the full!screen app. I uninstalled and wiped caches while in recovery and problem solved
Sent from my XT907 using xda app-developers app

laggy - phone lag while scrolling in tapatalk, slower than nexus 4

The lag is not huge, but it is noticeable, especially on first scroll through. noticeably laggier than n4. Any one experience this? I'll try to do a video later.
tmobile version, stock everything, I've uninstalled some of the tmobile apps. Tapatalk set to 50posts.

Since I've had this phone I've experienced no lag either on stock ROM or Trickdroid.
Sent from my Nexus 7 using xda app-developers app

I have both the N4 and the HTC One, haven't noticed any lag in scrolling in Tapatalk or any other app. UI feels smoother in the One, running it stock/unrooted with 1.29 firmware.

When did you get the software update?
Sent from my HTC One using Tapatalk 2

bjg020683 said:
When did you get the software update?
Sent from my HTC One using Tapatalk 2
Click to expand...
Click to collapse
Since day one I got my device. It was shipped with 1.27 firmware and updated to 1.29 eleven days ago.

I'm afraid it's the Tapatalk app that does this . I have a Note 2 and a One. The Note with Tapatalk lags, the One with the XDA version works fine...
Envoyé depuis mon GT-N7100 avec Tapatalk

Are you with T-Mobile really?
Sent from my HTC One using Tapatalk 2

bjg020683 said:
Are you with T-Mobile really?
Sent from my HTC One using Tapatalk 2
Click to expand...
Click to collapse
If you are referring to me, no my device is the European unlocked version.

Same for me
Sent from my HTC One using xda app-developers app

Well, mine is 1.27xx.
Sent from my HTC One using Tapatalk 2

I have had some issues with tapatalk but find it was network (EE) related. The app has frozen a couple of times also. Other than that it works fie.

Also 8 tracks seems to lag as well.
Sent from my HTC One using Tapatalk 2

bob13bob said:
Also 8 tracks seems to lag as well.
Sent from my HTC One using Tapatalk 2
Click to expand...
Click to collapse
*didn't mean to quote you, bob13bob*
I have both the n4 and H1 and the only place the n4 is laggy for me is tapatalk, the h1 has no lag what so ever, I swear when I tap the screen to do something it already has it done before I lift my finger off.
I'm on T-Mobile, 1.27. Stock.
Sent from my Paranoid Nexus 7 using Tapatalk 2

I'm wondering if this is a 4.2 vs 4.3 thing.
I also think the one may be throttling harder, which would explain better battery life.
Could be resolution difference. It's harder to push more resolution though.
The only reason I'm worried is the reports off how smooth the phone is. I dont want a lemon phone
Sent from my HTC One using Tapatalk 2

bob13bob said:
I'm wondering if this is a 4.2 vs 4.3 thing.
I also think the one may be throttling harder, which would explain better battery life.
Could be resolution difference. It's harder to push more resolution though.
The only reason I'm worried is the reports off how smooth the phone is. I dont want a lemon phone
Sent from my HTC One using Tapatalk 2
Click to expand...
Click to collapse
It's neither of those things. It's just the app not playing nice with the SoC, just wait for an update and it should be a-ok

So I checked with another one, it's also a bit laggy when using tapatalk and 8tracks.
Both are fa35xx phones.
Sent from my HTC One using Tapatalk 2

bob13bob said:
So I checked with another one, it's also a bit laggy when using tapatalk and 8tracks.
Both are fa35xx phones.
Sent from my HTC One using Tapatalk 2
Click to expand...
Click to collapse
It's not about which phone batch it is It's purely a software issue that the Tapatalk devs should fix sometime soon

I was experiencing major lag on my s4 which is the reason I decided to stick with the ONE. There is absolutley no lag whatsoever on this device!!
Sent from my HTC One using xda app-developers app

sal1311 said:
I was experiencing major lag on my s4 which is the reason I decided to stick with the ONE. There is absolutley no lag whatsoever on this device!!
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
I played with the s4 in hte store. it was very laggy but it's supposed to get better by turning off all the gimmicky stuff. however, the one still noticeably lags for me.
in terms of least laggy (default mode, all stock)
nexus 4 > htc one >> galaxy s4

You could try enabling force gpu rendering in developer options. That helped me with a few different apps, quite immensely.
Sent from my HTC One using xda app-developers app

Lag city :(

I'm running a rooted, cleaned up, stock mf3 ROM and its just terrible in terms of lag. Scrolling anywhere is jerky and awful looking, pulling down the notification shade is like 10 fps sometimes. Is this really the best it can do on touchwiz? My other devices are HTC One GPe, N4, Note 2, etc...
They're all faster! Help!
Sent from my Nexus 7 (2013) using xda premium

eallan said:
I'm running a rooted, cleaned up, stock mf3 ROM and its just terrible in terms of lag. Scrolling anywhere is jerky and awful looking, pulling down the notification shade is like 10 fps sometimes. Is this really the best it can do on touchwiz? My other devices are HTC One GPe, N4, Note 2, etc...
They're all faster! Help!
Sent from my Nexus 7 (2013) using xda premium
Click to expand...
Click to collapse
you can try to going into developer options and enabling force gpu rendering

Turned on. Will report back.
Sent from my SAMSUNG-SGH-I337 using xda premium

eallan said:
Turned on. Will report back.
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
Still terribly laggy. Is this really how this phone operates? Using my nexus 4 is like a dream compared to this.
Sent from my SAMSUNG-SGH-I337 using xda premium

Honestly I haven't noticed lag, if I were you after attempting to cut down lag, use your warranty.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

HiTideBlastoise said:
Honestly I haven't noticed lag, if I were you after attempting to cut down lag, use your warranty.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
I am envious. There is no way its a hardware issue. Wake your device and pull the notification shade down quickly. What's it look like?
Sent from my SAMSUNG-SGH-I337 using xda premium

also set all the animations to 0, it will fly.

eallan said:
I am envious. There is no way its a hardware issue. Wake your device and pull the notification shade down quickly. What's it look like?
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
Quick and fast
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

HiTideBlastoise said:
Quick and fast
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Mines quick sometimes if already awake... I'd love to see a video of it being quick.
Sent from my SAMSUNG-SGH-I337 using xda premium

eallan said:
Mines quick sometimes if already awake... I'd love to see a video of it being quick.
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
My notif bar is always quick when I pull it down, even when I wake the phone from sleep then pull it down ...I think you just have to tweak kernel and rom settings a bit. Or clear cache...dalvik and app data. Quicker then the htc one from att I had..

Thats just your device man. Mine is smooth as butter, and always has been. I would double check to make sure power saving is disabled, and if it is, then your best bet is to factory reset and see if that makes an improvement.

Try @zepplinrox V6-SuperCharger script!!
Sent from my AT&T Samsung Galaxy S4 Badass

eallan said:
I'm running a rooted, cleaned up, stock mf3 ROM and its just terrible in terms of lag. Scrolling anywhere is jerky and awful looking, pulling down the notification shade is like 10 fps sometimes. Is this really the best it can do on touchwiz? My other devices are HTC One GPe, N4, Note 2, etc...
They're all faster! Help!
Sent from my Nexus 7 (2013) using xda premium
Click to expand...
Click to collapse
User error

I had practically no lag out of the box. . . so maybe your phone has a hardware issue.
(since rooting and flashing Shostock2.1, and setting animations to 0 my phone is quick!)
The condition you describe is not normal for our model.
Good Luck

i Had same problems or close to same.
i had phone freezing and also flipping home screen used to freeze I went back stock and re root and flashed custom rom close to stock and i seen no lag
Maybe try some of custom roms ?

Monkz said:
Thats just your device man. Mine is smooth as butter, and always has been. I would double check to make sure power saving is disabled, and if it is, then your best bet is to factory reset and see if that makes an improvement.
Click to expand...
Click to collapse
I've run about 3 different Roms and I use the gs4 and One daily. The one is quicker. I know from reviews and Google searches I'm not alone in experiencing the lag. Maybe some people are more perseptive to it?
The Google edition ROM was quicker. I already have the Google play edition one though, so I was trying to use touch wiz. I'll see if I can video the lag.
Sent from my SAMSUNG-SGH-I337 using xda premium

http://www.youtube.com/watch?v=UEyWvct85I4
It's not just me!

eallan said:
http://www.youtube.com/watch?v=UEyWvct85I4
It's not just me!
Click to expand...
Click to collapse
I see no lag on mine https://www.youtube.com/watch?v=0ah2dXUhWgM&feature=youtube_gdata_player
Sorry bout the noise...playing gmod lol
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

mg2195 said:
I see no lag on mine https://www.youtube.com/watch?v=0ah2dXUhWgM&feature=youtube_gdata_player
Sorry bout the noise...playing gmod lol
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
Private vid!
Sent from my SAMSUNG-SGH-I337 using xda premium

eallan said:
Private vid!
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
Fixed...my bad lol uploaded from my old phone and thats default setting I guess
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2