yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] nicatronTg:
Though I doubt anyone has, if someone were to open the touchscreen assembly, they could verify that the screen grounding is properly secured. On my phone I had a similar issue, and one of the solutions was to verify that all the grounding mesh on the screen was properly secured.

It could also just be a defective digitizer.
[Nexus 7 General] ben dover:
All my issues with the n7 not tracking my finger at all times was fixed when I installed CM10. However, dead trigger started being almost unresponsive to touch input. Locking the device and then unlocking fixed it so I'm now in the other boat that some of you are in. But at least I'm out of the sinking boat that made the device a pain to use :)
[Nexus 7 General] nicatronTg:
For kicks, I'm going to try a factory reset and see if the older build is better. I'm hesitant to root this early in the game for the sake of still at least retaining warranty, so I'll wait on an RMA if a factory reset doesn't clear it.

Though, for the record, the device worked *fine* out of the box, but degraded after the update.
[Nexus 7 General] Benzoz:
also experiencing screen issues

I have screen issues as well but not exactly the same. After unlocking the screen only the "show app drawer" icon which is in the middle of the dock working. No matter how I touched any icons on the home screen no thing would happen. Another issue is that after the first issue occurred suddenly all the touches I made were activated and the apps I touched opened by themselves. Issues disappeared after locking and unlocking screen. Also sometimes there would be a line or two flashing on screen as what could be seen on a movie screen in a cinema. Wondering it's because of the screen itself or just software related.
[Nexus 7 General] californiarailroader:
I tried that, and I don't see any issues with this on mine, touch is working perfectly for me.
[Nexus 7 General] nicatronTg:
This may just be a placebo, but I've done a full wipe via settings (because for some reason I couldn't boot into recovery very easily), and the touch screen issues have all but vanished. Might try that prior to sending it in.
[Nexus 7 General] dwd3885:
I had problem as well, and then I did a factory reset. I have not seen the issue since then. Also, I had already returned a previous nexus 7 because the sound issues and that 1 did not have any issues with touch whatsoever. So I am sure that should not behave this way.
[Nexus 7 General] dwd3885:
Check that. Issue came back up. Leaning towards exchanging
[Nexus 7 General] RicRat:
I know not much help, but I can't duplicate this issue.

I also don't have the screen separation issue.

I would return it for a exchange.

I do have a oily spot in the middle of the screen that when cleaning with a alcohol pad, the alcohol will pool up. It will appear clean, but the spot will return. I know it gets grease from touching, but this spot is different from the rest of the screen.
[Nexus 7 General] dwd3885:
I exchanged the unit at Sam's and the new one has no issues. I don't know the stock level of the 7s but its worth a call to Asus/Google I think.
[Nexus 7 General] jaroslavj:
Please install https://play.google.com/store/apps/details?id=com.batterypoweredgames.mtvistest

And try doing this http://www.youtube.com/watch?v=gz27tAD1IBQ

Cheers!
[Nexus 7 General] dwd3885:
Works fine. Though my original was never that bad. Only issues on the right side occasionally.
[Nexus 7 General] jaroslavj:
RMA it is then ;(

What number should I call in UK?
[Nexus 7 General] ben dover:
My device is still running ok since I installed CM10 but the fact that it seems the devices start having issues after a while makes me wonder if a factory reset or in my case a new rom is not what's fixing it. Rather it might be clearing the cache that's fixing it and that's why the issues come back.

Mine was fine for about 24 hours after installing CM10 and then had one issue with touch responsiveness but its been ok since. If it acts up again I'll try wiping the caches and see if that helps.
[Nexus 7 General] bongostl:
I am still having problems intermittently on a fresh wipe of cm10...so I called and rmaed it.
[Nexus 7 General] ben dover:
Yeah I might just do that too. Seems like there are a lot of them out there that don't have this issue at all so I might be a hardware issue with a small amount of them
[Nexus 7 General] zach382:
Everyone having this issue please check your HW Version by booting into fastboot and checking. I have this issue and have HW Version ER3.
[Nexus 7 General] ben dover:
Mine is ER3 as well. Not having many issues now that I'm on CM10 but I still had problems on stock nonetheless.
[Nexus 7 General] zach382:
I just restored everything to stock so I can take it back to gamestop and I can't reliably recreate the issue like I could before. I don't know what to do about it.
[Nexus 7 General] jaroslavj:
So the current "facts" that we have:

1. It doesn't seem that a factory reset, cm10 help(it doesn't rule out the possibility of a software fix yet)

2. Most will agree the bugs is easy to replicate on a flat surface(any ideas why?)

3. It seems that this is not widespread and just a bug on some devices, which implicates that this is a HW issue and we should return.

If you play games like Dead Trigger and your screen rotates 180degrees and you suddenly face a wall or floor and get eaten by a zombie that means you have this issue.
[Nexus 7 General] ben dover:
Crap I forgot about that one! I have flipped 180 when playing dead trigger as well! Guess I should look at RMA at this point
[Nexus 7 General] jtc42:
I still don't get what kind of hardware problem gets fixed by sleeping and waking. Maybe wishful thinking but I'd still put money on it being a software/driver issue.

My problem is that they don't reply to emails and I don't have time to sit on hold for over an hour to get an RMA thing that could take days to arrive.

Really annoying :/
[Nexus 7 General] h3r3tic:
I factory reset and went to EOS rom the problem still persists. I'm really curious now because time is running out to exchange it. There is quite a few problems with the devices people are having. I don't wanna get caught down the road with a paperweight because the screen stopped working all together. And this is actually becoming a widespread problem. Google around people are finally realizing it.
[Nexus 7 General] Glencairn:
I've experienced the unresponsive screen but haven't pinned it down to specific events or situations. Takes up to 3 taps to register the command. Might be a timing thing (ie number of seconds elapsed rather than the time between taps) but it never takes more than 3 taps.

I can't believe I'm saying I'm lucky but it took less than 5 mins to get through to both Asus UK and Google Support on the phone to register the fault and request RMA.

FWIW, I've also got the raised screen and very poor wireless signal strength problems that many people have reported so a replacement will be the way to go for me. The raised screen I could tolerate, the touch screen issue too if it didn't get any worse but no or poor wireless is an issue too far for me
[Nexus 7 General] jtc42:
Which number did you use? I'm calling now and have been on hold for ages.
[Nexus 7 General] Glencairn:
Sorry, don't have it to hand as it's on a bit of paper at home. I'll look it up and edit this post later.

FWIW, I called Google at 8:05 on Saturday morning which probably had something to do with how quickly I got through. Got the acknowledgement email within the hour but still waiting for the RMA process email.

Edit:- 0800 328 6081
[Nexus 7 General] dwd3885:
I don't know why the problem exists, but I do know that I played with 3 Nexus 7's and on the one that had the issue, it was painfully obvious. The intermittent issue affects everything, it just seems like the tablet isn't fast, like the CPU is not working properly or something. It's just the touch I know, but you can easily tell.

I recommend returning/exchanging any affected unit.
[Nexus 7 General] Grims:
I made a post in another thread showing that this doesn't happen if you are using a controller while playing graphic heavy games. The touch screen continues to work perfectly no matter how long I play. Although, if I use the screen instead of the controller it quickly bugs out.

This makes me think it isn't heat related as has been suggested and just may be a buffer or cache freaking out when the screen is used heavily (like in a game)
[Nexus 7 General] jtc42:
Surely then it is a software problem?
[Nexus 7 General] mi7chy:
Interesting and definitely feels like a software glitch. Just for the heck of it I touched the screen and kept it there then turned it on, swiped my screen pattern wrong without lifting finger, had to lift my finger to reenter screen pattern correctly, it let me to the browser I had opened but could not scroll the page. Back button did work and it cleared up. Haven't been able to replicate it again. Looking forward to the next OS update.
[Nexus 7 General] jtc42:
Would be interesting to see if all the people with the problem have a common app or setting installed, or possibly updated to 4.1.1 at the same time or something like that. Something that could cause the driver to play up on some devices but not other.

I maintain that no hardware problem should fix just by sleeping and waking the tablet, that wouldn't make any sense. And yet, there seems to be no common cause so far.
[Nexus 7 General] alan77ss:
I don't think that's correct, check this review from android police http://www.androidpolice.com/2012/07/10/game-review-dead-trigger-the-most-fun-ive-ever-had-playing-an-android-game/

"My Nexus 7 had the occasional wig-out with the crosshair going 180 degrees in the opposite direction for no apparent reason, and this same glitch has been confirmed on multiple device and OS versions."
[Nexus 7 General] timskyline86:
Try cleaning the screen, ive found every time its happened to me there was something on it, Apparently its a very very sensitive screen, once i clean it off with a microfiber cloth is works again every time.

I wonder if people who have screen protectors are having these problems.
[Nexus 7 General] jaroslavj:
I think I'm correct please refer to http://xdaforums.com/showthread.php?t=1789450 about this bug, if you want to reproduce it. It might not be a Nexus 7 only bug, but its a very annoying problem.
[Nexus 7 General] JaSauders:
I'm using a cheap iPad screen protector I got at Five Below (basically the "5 dollar" store) that I cut to size to fit until my real Nexus 7 screen protector comes in. I'm not experiencing this as users describe, but a few times I did notice a slight hesitation. If I turned the tablet to force it to glare from the ceiling lights I could tell something was on the screen. Once wiped, it operated better. Since I haven't used a problematic tablet as some users describe, I do wonder if there's a deeper issue here.

At any rate, if it's happening in the same exact spot time and time again, I'd blame hardware. Since every report I've heard about it so far says it operates fine at different intervals, I can't help but to think it's software.

I'll certainly keep my eyes open in case it happens over here, but so far I haven't seen such behavior aside from what little I posted above.
[Nexus 7 General] Glencairn:
I don't play any games on mine nor do I have a screen protector but it still does it
[Nexus 7 General] Grims:
It does it on mine without playing games as well, I just think people are noticing it more in games because of the constant finger to screen contact acceleration the issue.
[Nexus 7 General] Alarmmy:
What you saw was obivous. If you apply Water,wet object on the touch screen, it will be unresponsive. The reason is It is capacity touch screen and water transduces electric.
[Nexus 7 General] alan77ss:
I totally agree it's annoying, but the issue with Dead Trigger is not necessarily down to a screen/os problem. I can't replicate the issue in any other game or app, which makes me think it's the game. But i could be wrong...
[Nexus 7 General] CyberStorm98:
That is not correct. I installed Dead Trigger on the HTC Flyer I gave to my friend and he had that exact same issue on the first level. The spinning 180 and facing a wall is a game bug, not a Nexus 7 issue.
[Nexus 7 General] K1LLER HORNET:
I don't have this issue.

UK
[Nexus 7 General] levskiboy1:
Screen Problem

(First of all sorry for bad English) Wenn i look the video in Youtube i also view the comment and one of the comments caught my eye . It says :

" Android devices measue the capacitance across the screen when they boot - to make them more responsive . I've read something to this effect . So , when you place your finger on the screen while it's turning on - you're causing an error in the calibration and therefore a dead spot . I'm not sure how would they fix this - it would require elimination of this feature . For now i think it's best not to lay your finger on your screen while booting. Perhaps they could pop up a warning while it's booting "

See for yourself :
[Nexus 7 General] nikster0029:
I too had the problem and believe it also is a software issue. This is too wide spread to be a simple batch of defective nexus 7s.
[Nexus 7 General] johnmurrayvi:
Here's what happens during boot, pulling relevant lines regarding the touch screen from init.grouper.rc:

# Touch
chown system system /dev/elan-iap
chown system system /proc/ektf_dbg
start touch_fw_update

---------

#Raydium touch setting
service rm_ts_service /system/bin/rm_ts_server
class main

---------

service touch_fw_update /system/bin/sh -c "echo /system/etc/firmware/touch_fw.ekt > /sys/bus/i2c/drivers/elan-ktf3k/1-0010/update_fw"
class main
disabled
user root
group root
oneshot
[Nexus 7 General] bauce:
I have the 180 degree rotation problem on my Galaxy Nexus.
[Nexus 7 General] mi7chy:
Same here. Only experience it on Madfinger games like Dead Trigger and Shadowgun THD. Rockstar games GTA III and Max Payne do not have this issue.
[Nexus 7 General] johnzz4:
Had you installed any apps yet when it started doing it? Could some of the Tegra 3 games be causing a background issue? I'm on my second Nexus 7 with the same issue...
[Nexus 7 General] bongostl:
I posted a thread with this info...but Google has confirmed this is a hardware problem, and you should RMA it.
[Nexus 7 General] Dimlow_uk:
Screen on my Nexus has started playing up. Seems to happen just after i take it off charge. if i leave it well alone for a while all is then ok. But still not every time. Cant figure out any logic to to one right now.
[Nexus 7 General] Dimlow_uk:
I bought this from PC World UK in Canterbury. Would love to know if anybody else from this area has one with the same problems. I spoke to Google about this and the Very nice lady on the phone told me they had a problem with heat from storage causing the problems with the warping of the screen. This apparently also is the cause of the touch screen touching its self.

Google cant replace as i got it from a store, PC World has no more in stock to replace it with, only choice left is to get a refund. Not Happy now, I was enjoying it when it worked. and that's the strange thing, this problem developed after 4 days use. I would have thought that if it was a hardware problem, this would have been a problem out of the box. Strange that is took a few days to develop. Could it be related to finger prints and grease on the screen ? I have clean it thoroughly with a micro fiber cloth. But still did not solve the problem.
[Nexus 7 General] GrkEngineer:
I have the same issue. Think it's a grounding issue that manifests when you cross axis between two touch points. Very likely in games like Dead Trigger and Mass Effect and Dead Space. I was able to recreate the issue in multi touch tester apps. If I touch the headphone jack it works fine. Also doesn't happen for me if I have headphones in. Try playing the games with headphones to see if it's better behaved. Called in a RMA last night. Really hope the next device doesn't have this issue.
[Nexus 7 General] rgunara:
dead spots

I was having issues with screen lift and spongy noise on the left side of the screen and in gong through the fixes in the xda forums I noticed that when tightening the two screws on the left center area, then I would notice these touchscreen dead spots a lot when charging and using the tablet. The other screen lift fix was to first tighten the screw until it is snug and then loosen it a little by turning it 1/4 of the snug position. This seems t have fixed the dead spot issue. I suggest this ONLY to people who are having both the dead spot issues and screenlift to try this if they want. The idea behind this is the screws are a bit too long causing it to touch the screen.

EDIT: Dead spot issue is still there when the tablet gets heated up. Might be less but the problem is still there
[Nexus 7 General] siksik6:
I have the same issue. Trouble is, it's intermittent. Seems to work for minutes at a time, and then stop responding. For example, if I draw zig zags in a drawing program, a few of the lines will be incomplete. It's not the same places each time. Then for a while it'll work perfectly. Then repeat..

Just a bit worried the place I bought it from will test it for 30 seconds and return it back to me saying they didn't find any fault.

Has anyone found a way of reliably reproducing the issue?
[Nexus 7 General] ExploreMN:
Have you tried going into developer options and tick on the Show Touch option to see if its sensing the touch and not doing something or not even sensing the touch?
[Nexus 7 General] siksik6:
I've turned it on now, but it's behaving for the moment, which is irritating as it may be difficult to return if they decide to be difficult.
[Nexus 7 General] siksik6:
OK,

I've found a couple of things

1) To replicate it, I need to hammer the hardware a bit. 5 minutes on a game that uses the Tegra 3 hardware seems to do it. (Puddle THD Lite in this case)

2) Using the developer options, it's not even sensing the touch

3) I've attached a link to a YouTube video of what happens when I try to draw a zig-zag pattern. NOT good! - http://www.youtube.com/watch?v=u9A0eg3r_ZA

definitely sending it back for a replacement.
[Nexus 7 General] chriscardinal:
Oh good, I'm experiencing this too now. I received mine on launch day, haven't seen this at all. It's happening pretty frequently: the touchscreen decides to "lose" touches during a touch. In testing, it seems to occur less frequently (during a "bout") whilst multi-touching, but I can't authoritatively rule that out. It will, in fact, lose touches that are idle: not in motion. This basically breaks the device entirely, but sure enough, it's fine once you screen off/on.

So what's the story here? If this problem is this widespread, I'm hesitant to RMA. I'm even more hesitant if it is, indeed, a software issue. I've had NO physical problems with my 7 at all before this (aside from a mic issue on first boot that was resolved immediately after first update) and the fact that it took two weeks to appear has me even more concerned...

Are we hoping this will just be resolved? I've been loving my N7 but this is really frustrating.
[Nexus 7 General] bongostl:
I took off the back and unscrewed every screw by a quarter turn.seems to have significantly decreased this problem for me
[Nexus 7 General] GrkEngineer:
I made a video of the issue I'm experiencing along with how it behaves when I have the headphones plugged in. https://www.youtube.com/watch?v=dG3-vjFYh0Q&feature=youtube_gdata_player
[Nexus 7 General] goodmourning:
same problem with mine. after hammering the hardware i loose the ability to have the tablet register my touch inputs
[Nexus 7 General] MisterG694:
I'm having similar issues, here's a video showing the issues I'm having, probably gonna turn back in.

youtube

DOT

com/watch?v=lqDhM1IA7kc

(I would make it a link but XDA won't let me)
[Nexus 7 General] cwoggon:
So, I received a new tablet as a replacement for one that had other issues and now I can easily recreate this problem. Just to be sure, I pulled my old one back out of the box and still can't seem to create this issue (see quote) on that particular device. Do I really need to start the RMA process again? I'm going to have $750 tied up in one device if I have to return this one as well...
[Nexus 7 General] espionage724:
You can do ASUS's RMA process I believe. I think you send your tablet to them, and they send you a replacement. How long it takes for the shipping though is something I don't know...
[Nexus 7 General] Thebeast715:
Me too

I have been so happy that I didn't have any dead pixels or lifted screen but this issue I do have.....

This happens to me. There is no one spot that goes dead, its the whole screen becomes unresponsive. I have been rebooting the device and that seems to help. The game I have been playing is Final Fantasy 3 but I have noticed this issue in Tapatalk Netflix and Chrome also (I may have been running FF3 in the backround when these happened, I don't remember).

I hope there is an easy fix for this as I really enjoy this tablet otherwise.
[Nexus 7 General] moosic:
I strongly feel that it is heat related on mine. Anything that causes heavy use, causes the issue for me. It sucks because I love Swype.
[Nexus 7 General] cwoggon:
I haven't been able to reproduce this issue since last night. I'm wondering if the issue is related to the capacitance of the human body as I had just woken from a nap...
[Nexus 7 General] gotak:
RMAing mine since I got it from the play store and RMA is easy.

Bit annoyed that it has any issue at all.
[Nexus 7 General] cmunho:
My capacitive screen is pretty spotty at times. I don't have to tax it to have it happen though, like others have mentioned. This morning I was typing up a post and I gave up because so many touches weren't registering.

I've been liking the tablet for the most part, but the quirky issues are building up and frustrating me. This one is definitely going back. I think I've decided I'd rather pay more for a quality built device, rather than these low quality components and build quality.

Sent from my Galaxy Note
[Nexus 7 General] bongostl:
's this is a hardware issue. I have spoken with the senior supervisor at Google and he confirms that this is a hardware issue. Send it into them and they will replace it with one that works. I had this problem on two of my tablets, and I sent them both back both. Both replacement work great
[Nexus 7 General] chriscardinal:
Interesting. Can you provide any more detail about that specifically? I'd like to confirm it's hardware based before playing tablet-roulette with the RMA process and resetting the screen seems like such a simple fix that works every time that I really wonder HOW it could be software based.

Thanks for the update!
[Nexus 7 General] r4d14n7:
Mine does this too, randomly. Not during intense sessions or anything. Turning the screen off and back on fixes it every time. I might RMA later, but am trying to hold out since I put a $20 screen protector on it. heh...
[Nexus 7 General] toastAndJam:
http://www.geek.com/articles/gadgets/video-nexus-7-touchscreen-defect-20120720/

This is the exact problem I'm having. After some sort of hardware intensive task, the right side of the screen in portrait starts flipping out. Turning the screen off and on temporarily fixes the issue.
[Nexus 7 General] saadi703:
This is very rare problem and can be fixed by asking for a replacement. The more common issues are screen lift and multi touch issues without grounding.

Get an RMA and your next device would be fine at least in that regard.
[Nexus 7 General] toastAndJam:
Really seems a lot like a software issue to me based on the screen on/off fixing it... Any links to back that up?