[Q] Screen tearing during landscape scrolling - Nexus 7 (2013) Q&A

Had my Nexus 7 for a few days now. When in landscape mode I've had the screen tear(for lack of a better word) during scrolling. The left third of the screen will scroll at a different rate then the other two thirds. It always catches up and lines up perfectly. A reboot will fix the problem but it has always come back after a day or so.
My unit is 16gb running whatever the latest is from google.
Is this a known issue or do I need to be returning the unit and getting a replacement?

I just got my Nexus 7 two weeks ago and I have the same issue. It's annoying. Is it a software issue or hardware? Any fix? This version has been out almost a year now.

Same issue. It is like 1/8th of the screen moves at a different rate then the rest of the screen. Results in wavy screen distortion in a vertical line.

Try going to developer settings (if you dont see it, go to about device and tap the build number till it says youre a developer) and check force gpu rendering for 2d animations. This will take some of the load off the cpu and maybe help with the screen tearing.

Done before i think
Mtsprite said:
Try going to developer settings (if you dont see it, go to about device and tap the build number till it says youre a developer) and check force gpu rendering for 2d animations. This will take some of the load off the cpu and maybe help with the screen tearing.
Click to expand...
Click to collapse
I did this before i think and all it did was move the tear to the left of the screen a bit more making less noticeable.

It's not a hardware issue.
Ever since the Lollipop update 5.0.1, my tablet feels quite laggy too. The only solution i found so far was to restart it from time to time. I'll be flashing the 5.0.2 update soon. We'll see how that'll go.
Edit: I just tried to sideload the 5.0.2 update and it seems it has a new bootloader or something because I got the "Footer is wrong - Signature verification failed" error. Yeah my tablet still on locked bootloader. Too much effort to backup my data. I guess I'l have to wait for OTA.

I just got my second nexus 7 2013 and have the same issue. Never noticed it on my first one but then again i only had 4.4.4 on it. I'm worried this could be a hardware issue. I reboot solves it for a few days and then it returns. Can anyone confirm if this is hardware related, if not is there a fix? Thanks

mikeyramalho said:
I just got my second nexus 7 2013 and have the same issue. Never noticed it on my first one but then again i only had 4.4.4 on it. I'm worried this could be a hardware issue. I reboot solves it for a few days and then it returns. Can anyone confirm if this is hardware related, if not is there a fix? Thanks
Click to expand...
Click to collapse
I still have the same issue even after update to 5.0.2 OTA

Related

Screen flickering after 4.0.4 update

Hi there, does anyone else experience screen flicker after latest update? I have never had it before, but after updating it does it now and then. Is there any easy fix for it?
eadred said:
Hi there, does anyone else experience screen flicker after latest update? I have never had it before, but after updating it does it now and then. Is there any easy fix for it?
Click to expand...
Click to collapse
Hi!
I experienced flicker after the update. After an factory reset and an battery charge it was gone. Now there's none. Maybe not an easy fix but worked for me!
Skickat från min HTC One X via Tapatalk 2
eadred said:
Hi there, does anyone else experience screen flicker after latest update? I have never had it before, but after updating it does it now and then. Is there any easy fix for it?
Click to expand...
Click to collapse
Guys if I remember correctly, the flicker fix
works like this. It takes time to kick in. Just be patient few says and it should be better.
Aja82 said:
Hi!
I experienced flicker after the update. After an factory reset and an battery charge it was gone. Now there's none. Maybe not an easy fix but worked for me!
Skickat från min HTC One X via Tapatalk 2
Click to expand...
Click to collapse
No action required. Just leave the kernel to do its job
Sent from my HTC One X using Tapatalk 2
eadred said:
Hi there, does anyone else experience screen flicker after latest update? I have never had it before, but after updating it does it now and then. Is there any easy fix for it?
Click to expand...
Click to collapse
In what application do you experience this flicker? is there a certain steps to encounter this? i haven't experience this yet. maybe a restart will help.
griffin0420 said:
In what application do you experience this flicker? is there a certain steps to encounter this? i haven't experience this yet. maybe a restart will help.
Click to expand...
Click to collapse
Grey background, white background, under lamp, in the dark. Depends, but if you don't have it or don't see it do not try to find it.
It's a big issue many threads, long threads, search but rather don't.
Sent from my HTC One X using Tapatalk 2
As i never had any flickering, i could presume it is very deep hardware fault and not a software issue, should be repaired by warranty
Raider0001 said:
As i never had any flickering, i could presume it is very deep hardware fault and not a software issue, should be repaired by warranty
Click to expand...
Click to collapse
Uf lets do not get this down this road again....
Please do not mention hardware fault again....It has nothing to do with this matter....
It might be a hw fault, malfunction, etc. But the ota before this .11 fought against it. Meaning the flickering was minimal or gone for most of us.
Now the technical description I do not know. But in more informed threads there was written that the kernel needs time to adapt to make the flickering go away. And most ppl that had flicker pre .11 were helped in matter of hours or days.
So I believe the flickering will be gone also after some usage. Lets get back to this in few days.
And guys who have nothing better to do as to say, it might be a hardware issue, please dont. I would like if only ppl that know what the flickering is about would write in this thread.
So if you never had it, dont have it now. Please ignore this thread ok?
Thank you
Dont wanna sound arrogant or condescending Raider, but I had fights about this already in custom rom threads. I do not wanna go there again. Sorry.
Why we cant see guy problem s profile? 4 th guy with problem, but dont know his profile, I mean messeges.
Htc One X Venom ViperX Rom + faux123 s kernel + Rezound Mod
So 10 days after the update, even though I had few reflashes, so maybe that doesnt help much, but still the flickering is still there.
Anyone else still has flickering now after a longer 4.0.4 usage and did it get better for some?
I had this before the update, then updated and waited 3 days on full brightness (i.read it has to settle with voltage or some stuff). Maybe you could try having it on full brightness? Not saying it will work & believe me, I understand your pain! Hope something works for you soon!
Keep us updated!
Sent from my now amazing HTC One X thanks to TeamVenoms ViperX rom
My HTC One X screen flickers only when on auto-brightness
Hi,
What do you mean exactly with 'screen-flicker' issues?
Different people use this description for some very different screen issues,
so I don't know if yours is severely bad or just minor...
I personally did experience some light screen flicker when the display is on auto-brightness,
the screen then has short periods where it quickly switches its brightness, and I assumed this
was normal because it's trying to adjust the brightness to the environment lighting.
This effect is easily noticed when scrolling the settings screen and is completely gone
when I deactivate auto-brightness.
maybe this can be helpful...
grtz
steabert said:
Hi,
What do you mean exactly with 'screen-flicker' issues?
Different people use this description for some very different screen issues,
so I don't know if yours is severely bad or just minor...
I personally did experience some light screen flicker when the display is on auto-brightness,
the screen then has short periods where it quickly switches its brightness, and I assumed this
was normal because it's trying to adjust the brightness to the environment lighting.
This effect is easily noticed when scrolling the settings screen and is completely gone
when I deactivate auto-brightness.
maybe this can be helpful...
grtz
Click to expand...
Click to collapse
I have the same thing going on.. it's like the backlight voltage is going up and down real fast.. after reading tons of topics on this matter I guess a lot of you guys are experiencing it.. so where is the official statement from HTC that the update should take up to two weeks to work for the screen???
REBOOT
eadred said:
Hi there, does anyone else experience screen flicker after latest update? I have never had it before, but after updating it does it now and then. Is there any easy fix for it?
Click to expand...
Click to collapse
Just off with HTC after the update last week. (Stock phone not rooted) My One X has been freezing especially on Facebook and twice a day rebooting itself. Slight flickering when scrolling..All errors were logged. Soft reset and Hard reset carried out several times, but no improvement.
HTC have put a service call on it and collecting the phone Thursday.
Murano1 said:
Just off with HTC after the update last week. (Stock phone not rooted) My One X has been freezing especially on Facebook and twice a day rebooting itself. Slight flickering when scrolling..All errors were logged. Soft reset and Hard reset carried out several times, but no improvement.
HTC have put a service call on it and collecting the phone Thursday.
Click to expand...
Click to collapse
Try flashing the RUU (this is the first thing HTC will do). It will wipe your phone, so back up. But test it before restoring.
Mine seems only to be flickering with Sense Launcher. No flickering with Nova Launcher. AND Nova is even smoother.
Sent from my HTC One X
Can someone explain, what this flickering is? It's not similar to the 'Recent Apps'/Grey Colour is it?
I purchased a brand new HOX yesterday which had a screen flicker. The flicker was only noticed on white.
I turned the phone on and was pushed 3 software updates, one after another and thought that after the updates the screen flicker would be solved. I ended up with the 4.0.4 update and the screen flicker was still there. I did a full factory reset and the screen flicker seems to have gone.
I will keep my eye on it, because if needed I can return it for a replacement within 30 days.
Has a factory reset worked for anyone else after updating to 4.0.4?
snapples said:
I purchased a brand new HOX yesterday which had a screen flicker. The flicker was only noticed on white.
I turned the phone on and was pushed 3 software updates, one after another and thought that after the updates the screen flicker would be solved. I ended up with the 4.0.4 update and the screen flicker was still there. I did a full factory reset and the screen flicker seems to have gone.
I will keep my eye on it, because if needed I can return it for a replacement within 30 days.
Has a factory reset worked for anyone else after updating to 4.0.4?
Click to expand...
Click to collapse
Not that I know of. I mean that a factory reset helps.
After it was flickering for me. I decided to go and test a custom kernel. Before the only reason I couldn't go with a custom kernel was the flickering. Only on stock it didn't flicker for me.
So as it was flickering I tried faux again, and now I do not notice it anymore.
Maybe it needed time to settle, maybe the UV helped? Or that I shutdown the capacitive buttons lights? I do not know...
But it can also be the change of scenery. As I was before on another continent
you need to wait till the update settles...
hamdir said:
you need to wait till the update settles...
Click to expand...
Click to collapse
hamdir read this :
My first comment here in the thread with a typo, says = days:
Guys if I remember correctly, the flicker fix
works like this. It takes time to kick in. Just be patient few says and it should be better.
Click to expand...
Click to collapse
And another one of me:
So 10 days after the update, even though I had few reflashes, so maybe that doesnt help much, but still the flickering is still there.
Anyone else still has flickering now after a longer 4.0.4 usage and did it get better for some?
Click to expand...
Click to collapse
So I took the time
I know I need to wait. What I didn't was how long. Hoped like hours, days, took 3 weeks
And I am still not sure its gone, as said different scenery or the other stuff, lights on buttons off, UV, etc

[Q] N7 shutting itself off at night

So my first N7 had dead pixels and when I returned it I had to open 3 others in store to find one that was perfect. Or seemingly perfect. Twice now I've woken up to find my N7 off. The first time it happened I thought maybe I turned it off but last night I know I left it on. I did some searching and found that I am not the only one with this issue, but I haven't found any recent threads about it or any known fixes. Now I'm still on 4.3 and really don't want to update to 4.4 but if this bug was addressed I'll update it. Anyone here have this issue, found a fix, or updated and had the issue disappear? I really don't want to exchange it yet again but I will if it's the only way to get one that doesn't do it. Any insight would be appreciated.
Sent from my Moto X
_MetalHead_ said:
So my first N7 had dead pixels and when I returned it I had to open 3 others in store to find one that was perfect. Or seemingly perfect. Twice now I've woken up to find my N7 off. The first time it happened I thought maybe I turned it off but last night I know I left it on. I did some searching and found that I am not the only one with this issue, but I haven't found any recent threads about it or any known fixes. Now I'm still on 4.3 and really don't want to update to 4.4 but if this bug was addressed I'll update it. Anyone here have this issue, found a fix, or updated and had the issue disappear? I really don't want to exchange it yet again but I will if it's the only way to get one that doesn't do it. Any insight would be appreciated.
Sent from my Moto X
Click to expand...
Click to collapse
Why don't you want to update to 4.4.2? It might solve the problem.
Anyway, the only device I had that had random reboots was my Nokia Lumia 520 which I straight away replaced.
I would advise you to do it aswell incase 4.4.2 doesn't fixe it.
username4this said:
Why don't you want to update to 4.4.2? It might solve the problem.
Anyway, the only device I had that had random reboots was my Nokia Lumia 520 which I straight away replaced.
I would advise you to do it aswell incase 4.4.2 doesn't fixe it.
Click to expand...
Click to collapse
I don't like the way 4.4 looks. I am a big fan of the blue/holo theme of 4.3. I have 4.4 on my N5 and that's enough for me. 4.4 really doesn't bring much to the table (for me anyway) that would compel me to update.
My N7 isn't rebooting, it's turning off. Never had a device that did that before. I'll probably update just to see if it stops it, and plus I have some bad stuttering when watching embedded videos in chrome and from what I've read, 4.4 solves that too. I really don't want to have to exchange it again, and I'm sure the manager at Best Buy doesn't want me to either lol.
Sent from my Moto X
_MetalHead_ said:
I don't like the way 4.4 looks. I am a big fan of the blue/holo theme of 4.3. I have 4.4 on my N5 and that's enough for me. 4.4 really doesn't bring much to the table (for me anyway) that would compel me to update.
My N7 isn't rebooting, it's turning off. Never had a device that did that before. I'll probably update just to see if it stops it, and plus I have some bad stuttering when watching embedded videos in chrome and from what I've read, 4.4 solves that too. I really don't want to have to exchange it again, and I'm sure the manager at Best Buy doesn't want me to either lol.
Sent from my Moto X
Click to expand...
Click to collapse
Obvious question here but have you tried a factory reset?
username4this said:
Obvious question here but have you tried a factory reset?
Click to expand...
Click to collapse
I'm going to tomorrow if it does it again tonight. But the tablet is only a few days old and I already did a factory reset before I set it up initially.
Ok it just did it again right in front of my face. It didn't just go black in the middle of use, I picked it up to use it and before I could do anything it powered down, but did so as if I had deliberately done it. Meaning, the Power Off pop up was on the screen and it said "shutting off" the same way it does when you turn it off manually. That would lead me to believe it would be a software bug as opposed to a hardware one... am I correct in that assumption? Or can some hardware defect actually trigger the normal power down sequence?

Crazy Touch Screen Not Responding Bugs with my G3

So most of us know about the System UI crash when using Chromecast, but this is even stranger. [Edit: an OTA update fixed this.] Some times, when I wake my phone up at the lockscreen or at times in the middle of a call - the touch screen stops responding. I can press and/or hold the volume buttons and there is a response on screen but I can not interact with the phone at that point. I can't continue to do battery pulls everytime. This is crazy. I'm on stock software. No crazy mods or anything. I've done a reset in the past and flashed the stock package again but this still happens every few hours. Only happens when the screen just wakes up...
Edit: This is a confirmed fix for me.
If you face the same issue, try:
open dialer
press 3845#* INSERT THREE DIGETS OF YOUR MODEL NUMBER THE PRESS #, for example, I am the F400K, so 3845#*400#
Hardware Device Test > Touch
update touch firmware
touch firmware version
wait 10 sec
reboot
I would say there is a misbehaving app causing the phone to lag in wake (that is all the unresponsiveness will be, extreme lag).
Sent from my Nexus 5 using Tapatalk
@Lennyuk - tried for over 30minutes after leaving it alone, I doubt it's a delay... Battery pulls work, but that's not the point.
deedscreen said:
@Lennyuk - tried for over 30minutes after leaving it alone, I doubt it's a delay... Battery pulls work, but that's not the point.
Click to expand...
Click to collapse
That was not his point.....to Find the app that is causing it go one by one uninstalling until you find it.... Something probably to do with app and the screen
Sent from my SM-N900P using Xparent BlueTapatalk 2
Epix4G said:
That was not his point.....to Find the app that is causing it go one by one uninstalling until you find it.... Something probably to do with app and the screen
Sent from my SM-N900P using Xparent BlueTapatalk 2
Click to expand...
Click to collapse
Totally agree with @Epix4G on this one. I am assuming you had a korean variant? The SK Telecom stock image is pretty ugly. Took me 3 debloat attempts before I had it behaving the way I wanted it to, but before I debloated, I had some lag issues (SK Telecom... grrrhhh).
Historically, Korean carriers (much like AT&T and Verizon) love putting useless junk on the phones for "productivity" but really they are there to charge Korean users more for other services, etc.
If you haven't done so, I would root and debloat, and see how big of a difference it makes (absolutely amazing performance after debloating on my F400S).
^^^^ - Will take that into consideration.
This may be a possible fix for now, can't yet confirm
open dialer
press 3845#* INSERT THREE DIGETS OF YOUR MODEL NUMBER THE PRESS #, for example, I am the F400K, so 3845#*400#
Hardware Device Test > Touch
update touch firmware
touch firmware version
wait 10 sec
reboot
It may or may not help
EDIT: It's been a few weeks and I haven't had this issue again. Usually every 4-6 hours it used to happen after powering on the screen, but so far so good.
Tried that with 855 version, it's not working. This is REALLY depressing as i just got a new phone and from day one i'm having this problem. I just can't believe LG screwed up like this, and there's no mention of this anywhere online other than this XDA thread. I hope i don't have to root and install custom rom as this really defeats the purpose of the phone.
@deedscreen
I'm having exactly the same problem on an 850 and tried your firmware method. The version number of the firmware did not change after reboot.
ic_fw_version info
SYnaptics 5.5
PanelType 1
version: v1.22
IC_product_id[PLG313]
Touch IC : s3528(family_id = 1, fw_rev = 1)
What version is your firmware? Also, did you find out about the fix from somewhere?
I have the F400K, but just got a US T-Mobile edition, (I'll eventually switch my signature). I would honestly suggest waiting for an OTA update. Call LG so they can document this. If that touchscreen update method doesn't work, I'm not sure what to do. I found the method somewhere online, I don't recall where exactly. If someone can figure out how to side load the touch screen firmware from a working Korean model to others, that would be great. For now, keep calling LG. It won't do much at first, but at least they'll have reports of this issue.
I have (RAW) touch screen firmware version: 30 05 51 96
Same problem, but not only on lock screen
Since 5 days I have my G3 (855 Modell). I was happy the first two days, then I discovered the problem, that the device is always unlocking itself, when in my front pocket. It's because of the Knock on feature. I deactivated this now.
But since yesterday i have the same issue: three times, i was unable to unlock my phone. The touchscreen simply did not respond. I had to remove battery. Today, I read this post and tried the firmware update of the touch, but I have the impression it did not change something in the version.
After this, today I had again once time the non responding touch while unlocking and shortly after, I had the issue after ending a phone call! The touch did no longer respond and had to remove the battery again!
I hope this is not a hardware issue, otherwise I will hurry up to the seller to exchange the phone, because its only 5 days old.
This is happening when the screen is on right? Or is the screen turning off and then not turning I again?
You need to keep Knock feature on, someone already said this. That's why your screen is freezing.
Daum Ex said:
You need to keep Knock feature on, someone already said this. That's why your screen is freezing.
Click to expand...
Click to collapse
Upps, yes, I just read this message now. To late: I was in the shop now and got mine exchanged. Anyway, that issue with the knock on feature should be solved also by LG: it's not acceptable, that the phone is always unlocking in my pocket.But then I wait with deactivating knock on for the moment.
So bad: such a good phone and such an annoying bug
icon71 said:
Upps, yes, I just read this message now. To late: I was in the shop now and got mine exchanged. Anyway, that issue with the knock on feature should be solved also by LG: it's not acceptable, that the phone is always unlocking in my pocket.But then I wait with deactivating knock on for the moment.
So bad: such a good phone and such an annoying bug
Click to expand...
Click to collapse
I sold mine after a few days, i was sick with it. I disabled the knock feature through the hidden menu only to have the screen freeze every day. What, i can't use the phone the way i like? I have to face the screen outwards in my pocket and risk damaging it? Screw that...
That, plus the overheating and horrible build quality (back got scratched in my pocket) was a deal breaker for me...
Daum Ex said:
I sold mine after a few days, i was sick with it. I disabled the knock feature through the hidden menu only to have the screen freeze every day. What, i can't use the phone the way i like? I have to face the screen outwards in my pocket and risk damaging it? Screw that...
That, plus the overheating and horrible build quality (back got scratched in my pocket) was a deal breaker for me...
Click to expand...
Click to collapse
Yes, indeed i also think about it. I got an official statement from support, regarding that the phone is unlocking all the time by itself in my pocket. They told me stuff like:
- this is a normal behaviour and can happen (!!)
- don't put your phone in the front pocket
- use the quick circle case to prevent...
- disable knock on (which is at least not possible over a standard setting, but only via the hidden menu).
I wrote back:
- that for me, this is not a normal behaviour
- that 90% of male users are wearing the phone in the front pocket
- that I don't like to buy a case only to prevent a bug of a premium telephone and
- finally, that they please could tell me, where and how to disable knock on
I am curious about their answer...
Good luck with that, disabling it through the settings doesn't change anything and they probably won't have a fix for months. They'll probably fix it though Android L update which will sadly come 6 months from official release at least.
Next time i purchase an Android phone i'm going with Nexus line...
icon71 said:
Since 5 days I have my G3 (855 Modell). I was happy the first two days, then I discovered the problem...
Click to expand...
Click to collapse
So what happened? How is it doing now?
Hey everyone, I just wanted to report my results of this touchscreen bug.
Well, I've only had my D851 for a week now. Of course I rooted it the same day I received it.
I had no touch issues until after restoring apps with Titanium Backup. I'd restore all user apps, then very few system app via XML. Since I just upgraded from a Galaxy S3 T999 I limited the system apps greatly. So much in fact that I only restored 1 system app......Media Storage 4.4.4 (Playlist). THAT WAS MY SCREEN KILLER!
The media scan on my D851 would render my screen unresponsive. I could only hold the power button and click power off or restart or whatever else was on that power menu. Then the phone would reboot after minutes of of a dead screen.
I flashed back to stock and reproduced the same issue. So now I've been running this device for 3 days without any screen lockups. I just have to rebuild my playlist again LOL.
I hope this helps someone here.
Knock
If you turn off the ability to wake by knocking the screen, it causes this issue where the screen locks. Turn it back on and the problem seems to go away.
I think LG really has to deal with this issue.
Hi guys, I have red a lot about this issue but I'm still confused with my LG G3 855.
First I realize problem with unlocking the phone using double click. Tried to upgrade touch software firmware using hidden menu and the screen became almost totally unresponsive. Tried to re-flash original 5.0 and 4.4.2, factory reset, battery removed, etc. but no luck.
I'm wonder if this is a software problem or became hardware. Should I consider replacing display or problem is in motherboard?
I really don't know what to do! Appreciate any comments or suggestions!!!
Thanks in advance!

[Q] touch key lights bug

hello everyone , so i use to have this bug back to kitkat also but it wasn't happening as often as it doesnt now that i have lollipop rom installed on my galaxy tab s T705 , the issue is with touch key lights which stays on even when i have them always off from settings , they act super weird when they are in that mode , they go off few sec after screen is off and if i shake the device they go on again as it looks like they are connected to accelerator sensor or something lolz ,the solution is super easy tho just hit the power saving on and then off again and they work normally again i heard some other ppl dealing with same issue but i wanted to know if there is a perma solution for it or not , im sure its a software issue but is there a way to fix it ?
Install a custom rom like cyanogen or something stock based.
I have the same problem. I usually have it set to turn the lights off after 6 seconds, but after a couple of days they don't work anymore. I would change the setting to off, then on, then back to 6 seconds, and it'll work again. After a few more days, they stop. I haven't seen a permanent fix for this.
Sent from my SAMSUNG-SM-G925A using Tapatalk
Same for me. Would usually opt to have the buttons backlight always off, but randomly it starts actin like always on, although the settings remains 'always off'. Toggling the setting to anything else and back to always off fixes the problem temporeraly.
Im running stock swiss lollipop on my t700.
Yes, this is driving me nuts too! I hope they resolve this in the next update and soon!
Sent from my SM-T700 using Tapatalk
Same problem with the lights on after a while even though set to always off. Seems to work properly under 1.5 sec setting option. I would love for the lights to be always off though.
LakersDroid said:
Same problem with the lights on after a while even though set to always off. Seems to work properly under 1.5 sec setting option. I would love for the lights to be always off though.
Click to expand...
Click to collapse
Me too have the touch key settings to always off and found the same problem.
In my case I think it only happens when I plug the Tablet to AC.
Did this happen to anyone under another circumstances?
Thanks in adavance!
LakersDroid said:
Same problem with the lights on after a while even though set to always off. Seems to work properly under 1.5 sec setting option. I would love for the lights to be always off though.
Click to expand...
Click to collapse
I have the same problem as everyone else, which I am very "happy" to hear because I am not the only one apparently dealing with it. I purchased the tablet a couple weeks ago and noticed that even though the setting for the touch key backlight is "always off", it goes on when I open the case, and sometimes goes on and off and goes weird. I contacted Samsung and they requested that I send in the tablet for repairs, so I did. At the same time, I contacted Amazon and they sent me another Tab S tablet. I have a month to return the other one so I figured I'll try this second one and see if I continue to have the same issues like the first one. Sure enough, I had the second tablet for less than a day and it's doing the exact same thing! So far the 1.5 second setting seems to keep the darn lights off. Sometimes doing a soft reset will fix the issue temporarily, but not permanently. If anyone figures out how to fix this, let us know! I'll be following this thread. I hope there's a software update to fix this.
TLAgnesB said:
I have the same problem as everyone else, which I am very "happy" to hear because I am not the only one apparently dealing with it. I purchased the tablet a couple weeks ago and noticed that even though the setting for the touch key backlight is "always off", it goes on when I open the case, and sometimes goes on and off and goes weird. I contacted Samsung and they requested that I send in the tablet for repairs, so I did. At the same time, I contacted Amazon and they sent me another Tab S tablet. I have a month to return the other one so I figured I'll try this second one and see if I continue to have the same issues like the first one. Sure enough, I had the second tablet for less than a day and it's doing the exact same thing! So far the 1.5 second setting seems to keep the darn lights off. Sometimes doing a soft reset will fix the issue temporarily, but not permanently. If anyone figures out how to fix this, let us know! I'll be following this thread. I hope there's a software update to fix this.
Click to expand...
Click to collapse
I believe this is a software bug so all tab s running the 5.0.2 lollipop will have this issue.
And to reply to the other poster: The problem will occur after a while, the lights will just turn on and stay on when you wake the tablet. Changing the setting and choose Always Off will fix it but it will come back after a while.
LakersDroid said:
I believe this is a software bug so all tab s running the 5.0.2 lollipop will have this issue.
And to reply to the other poster: The problem will occur after a while, the lights will just turn on and stay on when you wake the tablet. Changing the setting and choose Always Off will fix it but it will come back after a while.
Click to expand...
Click to collapse
Is there a way to get it back to the stock ROM? I'd rather avoid this light issue until an update to correct this comes out. Thoughts?
TLAgnesB said:
Is there a way to get it back to the stock ROM? I'd rather avoid this light issue until an update to correct this comes out. Thoughts?
Click to expand...
Click to collapse
Yes but you will need root.
LakersDroid said:
I believe this is a software bug so all tab s running the 5.0.2 lollipop will have this issue.
And to reply to the other poster: The problem will occur after a while, the lights will just turn on and stay on when you wake the tablet. Changing the setting and choose Always Off will fix it but it will come back after a while.
Click to expand...
Click to collapse
I heard that there's a new update available for the Tab S. (I already returned my tablet before my 30 days to get a full refund.) Did any one get the new update, and if so, did it fix the issues like this touch key light?
Hey,
I had this problem on the original KK software - upgraded to Lollipop a few days back and I still have the bug... in fact, it is even worse! Occurs more frequently than on LP.
I wouldn't mind leaving the lights on all the time, but they're so damn BRIGHT, and there's no way to adjust the backlight intensity!
Cheers,
Su
I found this solution on another forum...
If you enable smart stay, the touch key light duration will work properly.
Any further movement on this?. I've found that if I take my tab out of the book case the problem goes away. Seems like it's a bug with the case sensor.
No movement that I'm aware of. I'm really frustrated that there hasn't been a fix after all this time. I'm holding out hope that if there is ever an update to Marshmallow, that the issue will go away. Interesting observation about the case -I have a book case on mine. I'll remove it and see what happens...

Tab S 10.1 Touch Screen Stops Working

Ok so I am having a strange touch screen issues with both mine and my wife's tab S 10.1. It started on mine several weeks ago. When using the device, the touch screen will all of a sudden stop responding. If I press the home button, the device goes to the home screen, it just does not respond to any touch. If I press the power button to put the device to sleep and push it again to turn it back on the screen is working again but it will freeze up again, sometimes in less than a minute. When it first happened I tried to do a factory reset to see if that would help and the problem actually occurred during the initial device setup then so I know it's not related to an App that I have installed. I have sent mine to Samsung now three times trying to get them to fix it. They have replaced the screen once and said that there is nothing wrong the second time (still waiting on the determination of the third time). I have tried to research the issue but have not seen anyone experiencing the same thing. I do not have the rebooting issues that others have mentioned and turning the screen off and then back on does make it work, at least temporarily. I only remember noticing it since upgrading to Android 5 so I am going to try getting the device downgraded to Android 4.4.4 to see if that helps. Wanted to see if anyone had any other ideas. Samsung has basically told me if their techs say there isn't a problem they won't do anything for me.
A few people have mentioned touchscreen problems after upgrading to v5.0.2 mostly 8.4" but some 10.5" have you had any horizontal/vertical lines on the screen.
John.
Tinderbox (UK) said:
A few people have mentioned touchscreen problems after upgrading to v5.0.2 mostly 8.4" but some 10.5" have you had any horizontal/vertical lines on the screen.
John.
Click to expand...
Click to collapse
I have never noticed any lines. I have noticed after the first time at the repair center that the touch screen also seemed to be acting erratically, jumping around when trying to scroll or pan instead of having smooth motion. If I am able to get the device downgraded to KitKat and that improves things, I will just stay there until they figure out what is wrong with Lollipop.
I have stayed on kitkat because of the problems with lollipop, it`s just not worth it to me, but the majority of people don't seem to have any problems with it, I cannot see how upgrading to lollipop affects some touchscreens and not them all, but some people have reported the problem after upgrading i just don't know what to say.
It is normal for the touchscreen to behave erratic if you use it while your tablets is being charged, it is mentioned in the user manual.
I would say you have a faulty touchscreen, do you use a screen protector, have you tried the setting that increases the sensitivity of the touchscreen.
John.
I did not know about the charging item so that might explain the erratic behavior. I thought it might explain the screen locking up too but I know that has happened at times when I am not charging the device. I will be interested to see what happens this time when it comes back the third time from Samsung and whether downgrading my wife's device helps the issue on hers or whether we will need to fight with Samsung about hers as well.
For a couple months, I've had exactly the same problem on my Galaxy Tab S 10.5 (SM-T807V). It comes and goes in severity; some days, I lose all touch input every 5 minutes, it seems, while other days, I can go hours without trouble. Using the device without a case seems to help, as does restarting it, at least temporarily.
I have not sent my device to Samsung, nor have I performed a factory reset. But based on your experience, I'm not sure if either option is worth it.
Hi.
I would suggest removing any screen protector and cleaning the screen looking for any damage, download a touchscreen tester app from google play and testing your screen.
After searching around i found an touchscreen recalibration app for android, but i am very wary of it being fake or causing more damage or that it is for a specific brand of phone/tablet.
EDIT: I used an hex editor, and found this text within the apk file, see photo below.
John.
Well Samsung is finally sending the device back to me. This time they said the found the problem and replaced the main board and updated the software. So we will see what happens when it gets back to me tomorrow.
For anyone who is having this problem like I did. My wife has not had problems since she stopped using the device while it was charging. I have not had problems with mine since it got back related to this but whether that was Samsung fixing the issue or the fact that I also am not using it on my charger, I do not know. So if anyone else if having the problem, try the charger thing; otherwise, you may be looking at some kind of hardware issue that Samsung will have to resolve for you.
Most devices behave erratically while being charged. My HTC does it so does my tab.
Samsung even mention it.
Hi, i am having EXACTLY the same issue. The tab toucj freezes and normalizes if i lock it and unlock it with home button. I think its a software issue.
Sent from my GT-N7000 using Tapatalk
I have two of these from Verizon (T807V) and after updating them to 5.0.2 they both have this same behavior.
Quite annoying.
Any luck finding a cure ? I have noticed that the ram usage gets crazy. Any given time 1.8 gb is utilized out of he 2.77 gb available. I have uninstalled quite a few apps and shut down background processes but still the system is eating too much ram. Can any one help me on how to monitor aap ram usage ?
Sent from my SM-T807V using Tapatalk
Hi.
I was reading the HTC forum as i have qone of their phones, and i read that some people were using an Samsung touchscreen app to boost the touchscreen as they were having problems, the app is called "SGS Touchscreen Booster" link below, The Tab S1 has it`s own touch screen booster in the settings, maybe try that first.
https://play.google.com/store/apps/details?id=br.shop4apps.touchscreenbooster.com&hl=en_GB
http://forum.xda-developers.com/showthread.php?t=1581098
John
siddiqui.nauman said:
Any luck finding a cure ? I have noticed that the ram usage gets crazy. Any given time 1.8 gb is utilized out of he 2.77 gb available. I have uninstalled quite a few apps and shut down background processes but still the system is eating too much ram. Can any one help me on how to monitor aap ram usage ?
Sent from my SM-T807V using Tapatalk
Click to expand...
Click to collapse
That's how android works. Its pointless trying to reduce ram usage if there is still ram to spare.
Android utilises ram not wastes it.
siddiqui.nauman said:
Any luck finding a cure ? I have noticed that the ram usage gets crazy. Any given time 1.8 gb is utilized out of he 2.77 gb available. I have uninstalled quite a few apps and shut down background processes but still the system is eating too much ram. Can any one help me on how to monitor aap ram usage ?
Sent from my SM-T807V using Tapatalk
Click to expand...
Click to collapse
I had multiple problems with 5.0.2, ram hogging, touchscreen problems, my solution was to root and install a custom rom 4.4.4 the tablet is so much more responsive after reverting back to kitkat. I know it's not a solution for everyone but it fixed mine (SM-T800). Just throwing it out as an option.
Used kies today to upgrade to the latest firmware but still the problem continues. I have the Samsung sm t807v Verizon locked. Is there a way I can downgrade it to kit kat? Xda experts are saying it's bootloader is locked
Sent from my SM-T807V using Tapatalk
Steve1698 said:
I had multiple problems with 5.0.2, ram hogging, touchscreen problems, my solution was to root and install a custom rom 4.4.4 the tablet is so much more responsive after reverting back to kitkat. I know it's not a solution for everyone but it fixed mine (SM-T800). Just throwing it out as an option.
Click to expand...
Click to collapse
This is a strange one I used to have the opposite. 4.4.4 every now and then touch screen stopped responding. Pressing power resolved it.
When I upgraded to LL the problem went away.
However I mostly use custom builds. At the moment the best for me is PhoeniX ROM.
Absolutely bug free so far.
Can't say I had any issues with Ironrom either.
ashyx said:
This is a strange one I used to have the opposite. 4.4.4 every now and then touch screen stopped responding. Pressing power resolved it.
When I upgraded to LL the problem went away.
However I mostly use custom builds. At the moment the best for me is PhoeniX ROM.
Absolutely bug free so far.
Click to expand...
Click to collapse
I'm running BlissStalk (discontinued) but I haven't had any issues with it. I was running the CM11 unofficial also without issues. But the stock 5.0.2 it had on it when I purchased it (used) had issues. All my devices eventually end up with a custom rom eventually!
---------- Post added at 02:19 PM ---------- Previous post was at 02:15 PM ----------
siddiqui.nauman said:
Used kies today to upgrade to the latest firmware but still the problem continues. I have the Samsung sm t807v Verizon locked. Is there a way I can downgrade it to kit kat? Xda experts are saying it's bootloader is locked
Sent from my SM-T807V using Tapatalk
Click to expand...
Click to collapse
I flashed stock kitkat firmware via Odin... But it is a different tablet than yours (SM-T800). I found the following thread when I was trying to do it. Just make sure you flash the firmware for your specific model.
http://forum.xda-developers.com/galaxy-tab-s/help/sm-t800-best-to-downgrade-5-0-2-to-t3069929
Bootloader unlocking
So basically searching around the internet to find a kitkat firmware for this. I think it can be downgraded but I need the stock firmware for the sm-t807v.
XDA forums have support for the other variants but for the one I have which is Verizons sm-t807v there are no STOCK firmwares anywhere.
Ashyx and steve if you know any resource, please help me out. I need to get this fixed. I don't have access to any verizon stores where I could go and get this fixed or sorted. It just me and the internet.

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