yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] Vidfreek:
I'm not sure its software, for me this hasnt been an issue till the past few weeks to a month, otherwise I've had no issues with my tablet up to this point. Last night I restored my Nexus to stock, relocked it and proceeded to just add my account and download a few apps, I usually have it modded with a custom rom and kernel and use Titanium to restore everything. Did this as if I just bought it to make sure it wasnt something with a ROM or having too many apps or anything. Started off just fine, stock from factory was really smooth, added my account back in and proceeded to download some stuff, all was working great, grabbed Zen Pinball THD which is one of my favorites to play and ran that for a good 10 minutes, after that all my problems came back. Touch went out the window just as it did before, playing a game like that and having it heat up is what causes all the issues for me, it doesnt matter what chair I'm in or how I'm holding it, or if its in a case or not, this has now been consistent for at least 3 tests and this was from factory defaults with barely anything even on the tablet yet, so to me it looks like its hardware related, because I dont have any problems until I do something that heats up the tablet, I could browse, look at email, do facebook and what have you for the longest time and nothing happens, but after I'm playing a game like that for 5-10 minutes, running Netflix or something that will use the GPU, it heats up and the touch screen goes stupid. Needless to say I'm exchanging mine tonight at Sams Club where I bought it and a 2 year warranty and will see what happens with a new one, gonna make sure about getting my money back if I have the same issue with the new one too.
[Nexus 7 General] magedawson:
I have the same touch screen problem. But it didn't start until after I rooted Nexus 7. I re-locked the bootloader. And so far no touch screen problems. About 24 hours. Maybe this fixes the problem.
[Nexus 7 General] ÜBER™:
I can never get it to happen on command. It happens randomly... :confused:

Sent From My N7 via White Tapatalk
[Nexus 7 General] rgunara:
Has anybody tried flashing the new JRO03R Binary Drivers. It is supposed to include a high-precision touchscreen firmware

http://xdaforums.com/showthread.php?t=1905669

http://xdaforums.com/showthread.php?t=1905961
[Nexus 7 General] Metallice:
Didn't fix it for me, but honestly I don't really care too much :/ Hitting the power button and re-unlocking it isn't a big deal to me. There are bigger issues like the "16Gb-terrible-I/O-when-less-than-3GB-free-space" bug.

But hey at least I don't have screen lift! :/
[Nexus 7 General] ÜBER™:
Lol I've never expierenced that less than 3GB bug... which is odd but I do have a screen lift.. -_-

Sent From My N7 via White Tapatalk
[Nexus 7 General] simms22:
and i still havent experienced it with less than 600mb.

the i/o that ive seen people complain about looks like normal stock i/o to me. if you do want to increase your i/o, like in many custom kernels, run the ext4 mount script via a terminal emulator. or you can disable fsync. heres the ext4 mount script for higher i/o..

su(press enter)

mount -o remount,noauto_da_alloc /data /data(press enter)
[Nexus 7 General] Metallice:
I don't want to derail the thread, but it's completely different from quadrant scores and the remount script. Androbench will show that sequential write speed is about 11 MB/s with more than 3GB free, and it will shoot down to 0.5MB/s (at the lowest) starting with under 3GB free. It won't recover fully even as you delete stuff until you wipe it. For some reason it doesn't affect quadrant I/O, but the performance difference is very noticeable. You can always turn FSync off which will for the most part completely mask the issue by letting these slow writes occur in the background, but it's not a real solution.

Try Androbench with very little space free with fsync off and see how how your scores are.
[Nexus 7 General] simms22:
how's this. rasbeanjelly ROM/trinity kernel, fsync wasn't touched, 1.14gb free in storage.
[Nexus 7 General] nachomaster:
Same

The same thing happens to me as the guy on the video. So there is no way to fix this? Do you guys think it's worth giving the Nexus 7 back for a new just for that? If you don't touch the lockscreen while unlocking it works fine :S
[Nexus 7 General] Metallice:
Those look like fsync off results :/ or some kernel modification or script messing with the scores. Sequential write should be around 10 or 12 on a fresh stock device. Those write scores are as fast as androbench can process the data and I really doubt your device can write faster than the cpu can process.

Or maybe your random write score really is 400x faster than normal haha.
[Nexus 7 General] simms22:
honestly, i only did one bench since im at work. but, im very curious about this. is there any other info you can give me? anyways, im gonna reboot right now and try again. im not touching fsync(on by default). ill pm you with any other results, as to not clog this thread up. or we can take it to the trinity kernel thread, maybe someone else there has this issue because no one has ever mentioned it there.
[Nexus 7 General] ohmi_gaad:
New binaries fix issues

Has anyone tried the new binaries or drivers?

http://xdaforums.com/showthread.php?t=1912163

This does sound feasible.

Update: I unlocked and rooted and installed the new binaries. The touch screen problem remains. Did not fix the problem.
[Nexus 7 General] Robin2:
Did not work for me either.
[Nexus 7 General] rgunara:
What issue is not working for you? The unresponsive touch issue or the cross axis issue or both?
[Nexus 7 General] ohmi_gaad:
Touch screen issue for me..
[Nexus 7 General] ohmi_gaad:
I should also add, you really only see the problem when the two touch points are directly vertical on the screen. Any offset and registration seems to be fine.
[Nexus 7 General] JaSauders:
I'm rooted on my N7 and I notice this. I'm not sure if I noticed it prior to rooting, but I only had it unrooted for a short time.

Can anybody who's NOT rooted confirm that they too have this issue? Or are we all in the same rooted pool?

Does it exist with custom ROMs flashed?

EDIT - Reading further back reveals people with CM10 and stock non-rooted units that also exhibit the issue. Nice.
[Nexus 7 General] reddeviluk:
Not rooted, never tampered at all and I have the issue.....
[Nexus 7 General] ohmi_gaad:
touchscreentune app

I have been searching around for tools that may help to tune the screen on the N7. Saw this TOUCHSCREENTUNE app which seems to be only for the Samsung Galaxy and some Asus TF300 devices. You have to be rooted to use it. Has anybody found anything like this for the N7? I will try to contact the author to see if he plans to make this work for the N7.
[Nexus 7 General] JesseMT4G:
If having this issue just wake the screen using the power button. Seems only when waking it touching the screen.

I will say something is wonky with the screen as the more finger print marks, the less responsive it becomes.

I clean it and good to go. Kind of inconvenient though.
[Nexus 7 General] Her0o:
Anybody have this issue with build JRO03S?

Sent from my Galaxy Nexus using Xparent ICS Tapatalk 2
[Nexus 7 General] irrotational:
To add to the general concensus I had a c70 release version from Tesco with build JRO03D and it started happening after a couple of weeks.

It was heat related - geneal use it would "usually" work but as soon as you start games then it would stop working down the right hand side
[Nexus 7 General] Wilks3y:
Try to unlock the device whilst touching the screen, then attempt to touch the screen there, if it is not responsive in the point you touched whilst unlocking, you have the same issue as alot of other users.
[Nexus 7 General] Her0o:
Exactly same with me

I'm also C7O and JRO03D

Sent from my Galaxy Nexus using Xparent ICS Tapatalk 2
[Nexus 7 General] JaSauders:
I've noticed similar findings with my phone's touch screen. At first I thought maybe the N7 was a little worse in regard to that, until I realized just how much more frequently I use my N7 than my phone. Plus my phone spends a lot of time in my pocket, so I would think to SOME degree the inside of my pocket helps "wipe" fingerprints from my screen as time passes, whereas my N7 lives entirely in a Blu-Rex case, so nothing ever touches the screen besides my fingers.

The other day I noticed some weirdness when using my N7. I thought for sure I was going to throw it across the room with how it was acting. At this point I started to put two and two together though, because earlier on I was redoing my kitchen floor and laying ceramic tile. Ever get that mortar smeared on your hands? It's a strange feeling, because my hands were sucked dry of moisture yet they felt far from the traditional "dry cracked skin" that I was used to. I ended up washing my hands super well, put on some hand lotion, gave them about 10 minutes of dry time and bingo bango - N7 was working as normal again. Imagine that?
[Nexus 7 General] ohmi_gaad:
No joy here. The developer at present does not support touch screen tuning for ELAN screens.

---------- Post added at 12:47 PM ---------- Previous post was at 12:43 PM ----------

I know a couple of owners who have flashed the JRO03S drivers and still have the problems. This suggest the problem is not in the drivers. Some have also installed CM10 and the problem persists.
[Nexus 7 General] DrFaulken:
I am on my third N7 with the problem, and my second N7 with the aforementioned drivers and CM10. My latest N7 does not have the touch screen issues the first two did, so I am still not convinced it is software.
[Nexus 7 General] omnikai:
4.1.2 Update

Hi all,

Since updating to 4.1.2 (JZO54K) I haven't experienced this problem after about 15min of use. Normally my touch screen would start freaking out after a few minutes of use, generally dropping touches all over the place and not recognizing long-touches. I've enabled the touchscreen debug UI and haven't seen any problems

so far

!

It may still be a hardware problem, but perhaps the update works around it. This is my 2nd N7 with this problem so here's hoping it stays gone! :fingers-crossed:
[Nexus 7 General] ohmi_gaad:
Touch Screen fix

The update 4.1.2 also fixed the unresponsive spots for me also. The following problem still exist however.

http://www.youtube.com/watch?v=Cd2xtIxhEBA&feature=g-upl

What I have noticed with this problem is now, if I use just the tips of my fingers, the problem goes away, A heavy touch however and the problem is as is seen in the video. This would suggest some tuning with the firmware would solve this issue also. Maybe reduce the pixel trigger size to a smaller one.
[Nexus 7 General] adamhlj:
That problem has always happened with every touchscreen phone I have ever owned.
[Nexus 7 General] henkidama:
fixed!!!!

yahoo thanks google for fixing the problem im happy now :D
[Nexus 7 General] ultimate hater:
Fixed

This touchscreen issue was my ONLY gripe but it was so bad that I was barely using it while I was waiting for an update. I suspected it to be software and not hardware as the screen off/on would fix it for 3-5 minutes before it came back again.

This update has fixed it and because I became use to using it with this problem it now feels even better than when I first opened it.

It's funny how your expectations can change your feeling towards something, it's the best product (value/money) I've ever bought.
[Nexus 7 General] henkidama:
yes i think the same, the problem is software and not hardware that we thought, before get the update to 4.1.1 my nexus was fine and now with the update all is fine very stranger.....
[Nexus 7 General] chimaerarc:
I had the same issue yesterday, having "rogue touches" on my screen. I did the off/on trick and it does work, but hell it annoys me a lot doing it everytime it happens.

But here's the thing- I'm not keeping my hopes high, but yesterday, after charging my phone, and tried to monitor my N7's behavior, the dead touch seems to vanish! I've been using it since yesterday after I charged my unit and observing its behavior and, yeah, no dead touch whatsoever!

And I've been experiencing it yesterday constantly, like every minute after I did the off/on trick. Now it seems gone, I am just hoping that it will never show up again.
[Nexus 7 General] macasus76:
I think it is software too. I still have the issues on 4.1.2

I installed pimp my rom tweaks and mods 2.1.2 and

surfacelinger-fix.zip. tadda all smooth and fast now.
[Nexus 7 General] Arrch:
Darn, I'm having the same annoyance with my Nexus 7.

When i flick my thumb fast enough to scroll entire pages, it randomly just stops.

I have activated some traces in dev tools, looks like there is a problem with the inertia thing that should happen when you lift off your finger.

I want to return it, but I just don't know if they will give me a new one, or they will take mine, keep it safe somewhere for 2 weeks, then give it back to me saying everything goes well.

Here in France, we never know...

Edit: some screenshots. Anyone else having the same issue?

https://www.evernote.com/shard/s64/...33f1f9e7d013/dd9030c957c51b5f1bc1fee19803038f
[Nexus 7 General] Arrch:
No one else ? :( (kind of up)
[Nexus 7 General] Meg4mi:
I am having the same issue!

And i believe than people posting on this thread have it as well : http://xdaforums.com/showthread.php?t=2012047
[Nexus 7 General] imbamakaber:
keyboard typing aswell

This affects the onscreen keyboard aswell..
[Nexus 7 General] solvingchaos:
So I finally got around to calling Google Nexus support and they agreed that issue is definitely not normal behavior. They are going to send me an RMA replacement. I hope my new unit is flawless :p
[Nexus 7 General] bso44:
Good luck!
[Nexus 7 General] patriot720:
I had the same issue on mine. I just restarted and it worked fine. I might just try and exchange mine at GameStop where I bought it because I am having the left side screen raise/squeak issue.
[Nexus 7 General] MXR2:
this issue also appears on ASUS' transformer prime model. looks like ASUS didnt do much since then :X
[Nexus 7 General] nicatronTg:
I'm going to be in the same boat as you - are they sending it first or do you have to send it before they send it?
[Nexus 7 General] dhoshman:
I'm having the same problem. It's only doing it when you touch the screen while waking from sleep so I'm not sure if I'm going to rma this one or not. I'll give it a week or so see if any new issues come up and if so then I will RMA.
[Nexus 7 General] solvingchaos:
Well Google emailed me back... It looks like they are currently only processing warranty issues for people that purchased the tablet directly from the Play Store. I purchased mine through GameStop. Hopefully GameStop doesn't give me to much of a hassle when I try and get it swapped out...
[Nexus 7 General] sfletcher83:
I've got a huge touchscreen deadspot - the entire friggin' screen doesn't work!!! :(

Waiting on confirmation from Google about what they're going to do to sort it.
[Nexus 7 General] donatom3:
Was having problems with the touch screen big time while playing dead trigger. I solved most of my issues with a solid cleaning of the touchscreen. I feel there s a layer of some residue from the factory on the screen.
[Nexus 7 General] glenn37216:
-Mine is from the play store and does not have this problem when it wakes from sleep .
[Nexus 7 General] jtc42:
My girlfriends has this issue, but I fail to see how it can be a hardware issue since it seems to stop upon reboot at least (yet to try it just sleeping and waking it).

Will keep an eye on it and worst case RMA after a few days when their support is a bit quieter.
[Nexus 7 General] charlesky:
It certainly looks like the dead zone is where your finger was when it woke up. (Hard to be sure as you move the tablet around a bit.) Have you tried touching it in different places when you wake it to see if that changes the location of the dead zone?
[Nexus 7 General] Cabal_:
http://www.geek.com/articles/gadgets/video-nexus-7-touchscreen-defect-20120720/
[Nexus 7 General] bronx:
Bad luck for me - I'm on the same boat... :(
[Nexus 7 General] bricewgilbert:
Got the same issue as well.
[Nexus 7 General] bongostl:
Same. Driving me nuts
[Nexus 7 General] Uh60m Pilot:
This might seem like an obvious question but do you have a screen protector on your nexus 7? I noticed that after I installed a wet screen protector my screen behaved funny. I continued to have dead spots and lost responsiveness until I removed it.
[Nexus 7 General] bricewgilbert:
Nope don't use one.
[Nexus 7 General] bongostl:
I also don't have a screen protector but am having problems.
[Nexus 7 General] solvingchaos:
I do not have a screen protector on my N7. I'm also starting to notice that even if I do not trigger the issue when waking the device I start getting poor touchscreen performance after using the device for an extended period of time or after using CPU heavy games or apps. Putting the device back to sleep and waking it again seems to always clear the issue up.

I was able to swing by the GameStop where I pre-ordered my N7 from and demonstrate the issues I am having. They said they would put in a call with their corporate office and try to get me a replacement as soon as possible.
[Nexus 7 General] h3r3tic:
I have this same issues restarted 2 times today because of it. Mine will do it normally. I was just playing ff3 and all the sudden my touches were all spotty and not accurate. I reboot and it's fine. Def software related. Although Idk if it will be fixed or if its a flaw.
[Nexus 7 General] trothmaster:
Also having problems! I even did a wipe and the problem came right back...will be working great then all of a sudden parts of screen become dead and if I hold my finger on screen whatever I'm holding freaks out etc...
[Nexus 7 General] nicatronTg:
I'm without a screen protector as well. Waiting on a reply from Play Store email support.
[Nexus 7 General] ben dover:
I have had nothing but issues with my Nexus 7 touch screen.

The first one I noticed was when I first got the device I downloaded and fired up ShadowGun to see how the Tegra 3 graphics looked.

The touchscreen was so unresponsive, I could barely play the game.

The next issue I found was when scrolling through a list. Sometimes when I'm scrolling through a list or webpage looking for something, I might swipe and then leave my finger on the screen for a second to see where I'm at before scrolling further. I noticed that after swiping my finger and then bringing it to a stop, the page begins to "jitter". This doesn't happen all the time but it happen quite a bit.

I've also noticed that flicking my finger to scroll fast doesn't work that great. On my gnex (4.1.1), I can flick my thumb on the screen to fly down a webpage or long list. On the Nexus 7, it sometimes scrolls the page maybe an inch instead of scrolling really fast.

One last thing I noticed was when I was using my stylus on SuperNote (pulled the apk from my tf101) ;-P

When I'm writing notes with the stylus or my finger, a random "ink spot" shows up almost halfway down on the right side as if I accidentally hit the screen with my hand while writing. This is not the case and I was able to reproduce the issue over and over again. However, that was a few days ago and this issue seems to have cleared up. But since I've had so many other issues I doubt it was random.

Here is a video of the ShadowGun issues. I've turned on "show touches" in the dev options so that you can clearly see how the touchscreen looses track of my finger.

http://www.youtube.com/watch?v=ZQgctGCbVzY&feature=plcp

Here is a video of scrolling around a webpage and how it jitters if I leave my finger on the screen after swiping around.

http://www.youtube.com/watch?v=Lhj_M_9OSDw&feature=plcp

Here are my initial thoughts to what could be causing this.

1. A hardware issue. Maybe the screen is tightened down too tight in one spot which is throwing the touch recognition off. Maybe it's just defective.

2. Project Butter. One of the features of Project Butter was the "ability" to track where your finger is going and help smooth out scrolling. When I'm moving my finger around the screen and then stop, the jittering almost makes me think the system is trying to guess which way I'm going to swipe next. (Kind of like the "true motion" or whatever it's called on 240hz TVs. It tries to predict where the frame is going to smooth out the video and make it feel more life like.) I'm wondering if that's what Project Butter is also trying to do in a way and I've just found a way to screw with it's algorithms. :)

I plan to contact Play Support about this since I'm leaning more towards defective unit after seeing the amount of people on here with issues as well. I just hope the replacement doesn't have the lifting glass issue since mine doesn't have that issue.
[Nexus 7 General] bricewgilbert:
The scrolling issue with the web page could be Chrome. Chrome doesn't have the same kind of momentum scrolling that the standard browser (or any other browser really) does on the G Nexus.
[Nexus 7 General] ben dover:
I used chrome in my video but it happens all over the place. G+ app, xda app, and mint to name a few
[Nexus 7 General] TheDoctor1971:
I had this issue the first day I got mine. I could barely type with the keyboard because it wouldn't register touches. I installed SwiftKey thinking it might be the stock keyboard just being laggy and it actually worked fine. Turning the screen off and on would fix it for a bit but it always came back. After a day or so the issue has disappeared completely. No complaints now.
[Nexus 7 General] jtc42:
I've posted this on all the threads I can find about this, but my GFs tab has this issue, and hers is fixed by simply sleeping and waking the tablet.

I don't really get how it can be a hardware issue. if there's a hardware problem, how does sleeping it fix it? It's not even going into deep sleep. Just push power, immediately switch back on and it's fine. I really hope it's software so a fix can be made available >.<

Also quote from a comment here

Interesting, has anyone else got this update and had it fix the issues?
[Nexus 7 General] solvingchaos:
None of the updates have improved or fixed the issue for me.
[Nexus 7 General] trothmaster:
That is exactly my problem too! Always comes back even after hard reset. No screen protector...
[Nexus 7 General] ben dover:
Ok here's an update. I installed a CM10 kang and the issues are pretty much gone! I'll continue playing around with CM10 and see if it comes back but ShadowGun is playable now!

Weird how stock AOSP is fine for most but is jacked on my n7.
[Nexus 7 General] bso44:
So that means it's probably a software issue. Hopefully the next update would fix it for the guys keeping it on stock for now.
[Nexus 7 General] h3r3tic:
The easiest way I found to replicate this.

Lock your nexus (screen off)

Put your finger anywhere on the screen and wake the screen back up.

Now slowly move around the unlock but don't actually unlock the screen.

If the lock keeps jumping around and not responsive simply turn the screen back off.

Now do not touch the screen at all and wake the tablet back up.

Move the lock around to see if its perfectly responsive.
[Nexus 7 General] pflorin:
this method worked for you? no more touch issues?
[Nexus 7 General] h3r3tic:
Ya I was rebooting all the time and then i figured out touch issues only happen if I wake my device while touching the screen. So anytime I wake it touching the screen before I press the lock button I have issues if I simply lock it and wait a second and wake it back up without touching the screen my issues are gone.

I wanna say I changed my dpi to 175 tablet ui and this is no longer happening so far.
[Nexus 7 General] nicatronTg:
For the record, the touch screen issues persist with or without touching the screen during wake on my N7. The only real solution I've found is to let the screen sit on and wait a bit before usage, then it resolves itself and stops.
[Nexus 7 General] bongostl:
I am on cm10 and still having problems.

Are there devices that don't have this problem? I have two n7s,And both have the problem.