yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] benegessrit:
I have the same issue. Unreliable touch input; when crossing axis and when using one finger (if more than the fingertip is touching the screen). I called Google, and they sent me a replacement that just arrived 3 hours ago. Same exact problem. This one even has a lower color quality than the original.

Has anyone bought or received a replacement unit that does NOT have these touch issues?

A tablet that doesn't like to be touched! Nice one Asus!

----------- EDIT - 1 hour later - Location: USA - Contact: Google Support ----------

I decided to keep the old one since it seems the new one has even more problems and there's a higher chance of getting an even more messed up device if I keep exchanging it. So I called Google, all pigtails and butterflies, and described the issue. The guy wanted to send me a new one, so I told him that there would be no point and that I wanted to keep the old one. Have you seen the TV show Great Britain? If not then look this up... "Computer says NO" or:

http://www.youtube.com/watch?v=0n_Ty_72Qds

He actually told me that if I send back the new one then the $250 hold will go through as a charge!

I asked how will Google charge me twice if I only keep one device? But it didn't compute unfortunately.

The 2nd guy told me to just send it without an RMA.. "They will figure it out"... LOL.

The 3rd time obviously was the charm. Thanks John... Google really SHOULD give you a raise!
[Nexus 7 General] Nippero:
Like i said earlier, my N7 only has that issue when I use four fingers in a square formation in order to cross all axis of each point. Doesnt happen with just two fingers.

And my HTC G2 exhibits the same behavior. Bugs out with 4 fingers in a square but fine with 2 in a line. I never even noticed a problem on the G2 until I saw this thread and decided to try it.

EDIT: here look for yourself: https://www.youtube.com/watch?v=YifYjIknmBc

My N7 is a C70.
[Nexus 7 General] AZImmortal:
I just tried the same multitouch app that you used in the video and it's not showing the problem (the app itself is likely not updating the touch points correctly). Try using Multitouch Visualizer 2. If you still don't believe that this is a real problem, try using Google Maps and try to pinch to zoom with the axes crossing (just continually pinch in and out without lifting your fingers to see it most immediately). Then try pinching without the axes crossing to see the difference.
[Nexus 7 General] Nippero:
I also tested this by only enabling "Show Touches" and "Pointer Location" in the Android OS Development Settings which I mentioned in an earlier post.

Had the same results.

Tried what you just suggested using google maps. No problems there zooming in and out with two fingers aligned perfectly. I can even rotate the map properly.

Havent tried the app you just suggested yet. I'll do that at home as my phone internet is throttled, making downloading new apps a chore.
[Nexus 7 General] guitarofozz:
Just wanted to say...my nexus has this issue but my HTC One X also has the exact same thing only when laying flat and not touching it. Honestly though, I've had my one x for months and had NEVER noticed anything funky with the touch screen so I'm completely fine with my nexus doing it. All the "problems" we've found with our nexii have been things that need a very specific action done to recreate and most are never something we do on a normal usage so why bother?
[Nexus 7 General] AZImmortal:
Just to confirm, you're doing these tests on a non-grounding surface (like a wooden table), correct? Your video seems to have been shot on some type of stone surface, which might ground the tablet.
[Nexus 7 General] Nippero:
Heheheh, that "stone" surface is actually my cruddy MDF board (aka fake wood) table which has gotten roughed up and nasty over the past years.

But yeah, its a non-grounding surface.

I'm sure of it because if I place my N7 on my knee, the issue with 4 fingers overlapping axis disappears. Same with my G2.
[Nexus 7 General] rimbaud_:
Anyone got any more info about this fault? I preordered my Nexus 7 and received a C60 model about 3 weeks ago. Was a little creaky but no real issues. However, noticed some weird touch feedback during multitouch games and did the axis test and found my Nexus has the same issue.

Stage 2 was to call Google and advise them of the problem. I spoke with Sean and he said it was the first time he'd heard of the multitouch axis issue. He suggested a factory reset but obviously the problem was still present. He then suggested a RMA and replacement. Nexus 7 number 2 arrived today (C70 version) and although the hardware is generally put together a bit better, the axis bug is still there.

Seriously, has ANYONE got a Nexus that doesn't experience issues when on a bed surface and unplugged? Can this be fixed by a software update or is this a serious hardware issue? It's so disappointing because the tablet is so incredibly cool in every other way.

The irritating thing is, contacting Google is a crapshoot. Some reps claim it's fixed, some say it only affected C60 models and some say (like Sean) they've never heard of it.

Here's hoping for a swift resolution.
[Nexus 7 General] Solange82200:
I thought I didn't have it, till I realized that having it charging is grounding it. Now I realize I do have it. What I don't understand though, is why would it affect people in real life? Do you guys not hold the tablet to play games? I'm just curious, so I know how bad this will affect me potentially down the line.
[Nexus 7 General] Nippero:
Seriously, no one reads my posts in this thread D:
[Nexus 7 General] kalinf:
Seems my Galaxy Nexus is demonstrating the same or similar behaviour as well. With both the 2 and the 4 finger touches on a non grounded surface. Make of that what you will.
[Nexus 7 General] Cynnthetic:
How about playing games while it's in a case? That's where problems start for me. I want a travel case in portfolio form, but I don't want to remove the N7 every time I game. That's why i'd love to see a home made fix for this from someone.
[Nexus 7 General] Nippero:
What I find odd is that touching the N7 "grounds" it...

The back is plastic, the bezel is plastic, none of it conducts electricity. I didnt think you could ground something by touching a plastic part of it.

With my G2 I have to touch the metal bezel to ground it, touching the rubberized parts have no effect.

So now im wondering, maybe for those with the two finger issue or worse, maybe one of those metal spring clips for the antennas arent making proper contact with the back cover?
[Nexus 7 General] AZImmortal:
I'm not sure what you're getting at. How would proper contact with the back cover be affected by whether I place the tablet on a wooden table or metal table?
[Nexus 7 General] Nippero:
The back cover isnt rigid so by holding it, you may just be pushing the back cover into the metal pins, creating a better contact.

I havent noticed anyone talking about just putting it on a conductive flat surface though, if that fixes the problem as well, then never mind.

Just a theory, because AFAIK you dont ground things by touching a plastic piece.
[Nexus 7 General] Solange82200:
Interesting, with mine if I hold it by the case it still grounds it. I have a cloth/cardboard like case from caseable.com, and holding it by the edge without touching the tablet grounds mine. I wonder which kind of cases we should avoid that prohibit grounding while touching.....

---------- Post added at 03:32 PM ---------- Previous post was at 03:27 PM ----------

If yours doesn't do it with two fingers, there has got to be some sort of fix right? I've already done three rma's and this is the most decent one I've gotten, I don't dare rma again and risk getting a worse one or one that still has the multi touch problem
[Nexus 7 General] dilldoe:
simplest solution is to plug in earbuds.
[Nexus 7 General] Nippero:
I'm going to be popping off the back cover later to paint it anyway, so I'll try the same test again with naked nexus on my wooden table. If it starts two finger glitching, then my theory about improper contact between backcover and metal contacts would be confirmed.

Solution would be to VERY CAREFULLY bend the metal pins out a TINY BIT. I've heard theyre sensitive and someone else on these forums had to delicately solder one back on after he snapped it lol.
[Nexus 7 General] dilldoe:
well the inside of the back cover is conductive, so I'm guessing it's capacitive like the screen.

---------- Post added at 04:05 PM ---------- Previous post was at 04:01 PM ----------

it's not improper contact, it's just not enough grounding. try placing it on a baking pan and the issue disappear
[Nexus 7 General] Solange82200:
Please try and keep us updated, thanks!
[Nexus 7 General] AZImmortal:
I'm not sure that this will prove much since you'd be removing some of the hardware. The grounded vs ungrounded surface will show you that it's not a physical problem. You've already seen yourself that your four point problem goes away when placed on your knee. As for the rigidity of the cover, I'd say that it's very rigid. Maybe it's not a sheet of metal, but it's far from flexible.
[Nexus 7 General] Nippero:
Well I figured it wouldnt hurt to try. And try I did. No difference with the back off.

Popped the back off, and put it on my bed, still had no issue with 2 fingers, and the 4 finger issue was still present.
[Nexus 7 General] opcow:
I have this issue as well. Touching the bezel doesn't really do much to change it but touching the USB port or headphone jack does. Just holding the tablet near my body makes the problem go away, as well. My N7 is in a leather case, BTW, and if I lay it flat on my legs the multi-touch glitching goes away despite the fact that I am not in direct physical contact with it (other than the fingers on the screen). Even holding it it the palm of my hand with the case folded back so it's separated from my hand by 2 pieces of leather some padding and cloth, the problem is gone.
[Nexus 7 General] sdhanjal15:
When I put my whole thumb on the screen. It jitters
[Nexus 7 General] ahfpired:
That's EXACTLY what I've found with mine... I simply don't know if it's a hardware issue or if it's that I have big thumbs!!!! I tried to replicate the issue with my Galaxy Nexus (StocK too) and the problem is not present....
[Nexus 7 General] Draje0:
Same problem with the thumb as well.
[Nexus 7 General] ahfpired:
I have an RMA with ASUS already but I'm not sure to send it. I had to wait like 45 minutes in order to talk with a representative. And I am very sure they will not find the problem. I will have to pay to send it and wait like two weeks to probably receive it back the same way. If I could only find a solution...

---------- Post added at 11:51 PM ---------- Previous post was at 11:09 PM ----------

http://www.youtube.com/watch?v=PGIpr75opOQ

Placing the tablet on foil paper and touching the foil fixes the problem....
[Nexus 7 General] AZImmortal:
Yeah, it's the same thing as placing the tablet on a grounded surface (you are, in fact, placing it on a grounded surface because you're grounding the foil by touching it).
[Nexus 7 General] ahfpired:
Should I just send it for repair? I'm really disappointed with this issue.
[Nexus 7 General] AZImmortal:
All signs indicate that every single Nexus 7 has this problem. You can try seeing if they'll attempt to fix it (I'd be interested to see what they have to say about it at this point).
[Nexus 7 General] CasualStarlord:
My new replacement Nexus 7 (C70K) had the cross axis issue, but seriously its always in my hands so I only ever have an issue if I am following this thread and attempting to to this un-grounded multi finger touch thing...
[Nexus 7 General] bntran02:
After submitting for an RMA I received the return label and replacement order almost immediately (Before I got off the phone with the google rep). So props on google's return process.

My new N7 STILL had the same multi-touch issue but it was not as bad. IE: I had to VERY slowly cross axis before the issue cropped up. A definite improvement as I have only noticed this issue in synthetic tests (multitouch test app) and never in a game.

My original N7 had the dead spot bug which is resolved with my new N7. However, my new N7 has the screen lift issue but it is extremely minor. You will not notice it unless you are specifically looking for it. I would say it's fractions of a millimeter of rise.

Both N7's version was c70 purchased mid August
[Nexus 7 General] mrsatan:
No problems on my c80
[Nexus 7 General] jaroslavj:
Then please make a video with proof. Cheers ;)
[Nexus 7 General] guitarofozz:
Five bucks says you just don't know how to replicate the problem.
[Nexus 7 General] ThinksAmoral:
I have a C80 and don't have this problem either.

I'm using the same app as the OP, and trying it at different angles, and everything is reading correctly.

EDIT: I do have this problem

Tapatalk made me send this.
[Nexus 7 General] electricjelly:
Are you testing this issue while the nexus is on a ungrounded surface such as a bed, not being held or touched except for the touch screen of coarse, and without anything plugged into it. I ask because I went through three c70's all with this issue before I gave up and decided to live with it. I'm still not sure if its a design flaw or a defect.
[Nexus 7 General] ThinksAmoral:
I've tried hard and soft surfaces. With the device charging and not charging. I've held the tablet at different angles. I've placed it on surfaces at different angles. I've tried testing it exactly as what's in the video (a slight pause before touching the screen with my second finger). I've tried it quickly and painfully slowly in both portrait and landscape in all rotations.

I can not rectify the problem. I can only assume this flaw was fixed on C80 devices.

Tapatalk made me send this.
[Nexus 7 General] jaroslavj:
Could you please make a video, so that we are able start calling Asus for replacements?
[Nexus 7 General] ThinksAmoral:
I'll do one during the week. I'll link it here when I have it done.

EDIT: Well. While I was recording the screen, I could rectify the problem. The problem has not been fixed on C80 devices.

Tapatalk made me send this.
[Nexus 7 General] electricjelly:
Darn, you had my hopes up for a second. I was about to run back to office depot exchange for a fourth one. Thanks for checking.

The multi touch crossing axis issue hasn't bothered me that much, but there are a couple other digitizer issues that have been getting annoying from time to time. I believe they are related. When I'm scrolling down a webpage slowly while reading, if I press too much of my thumb on the screen, the page will start start giggling all over, as if my thumb was having a seizure. And something that's only happened a couple times, the screen will become very unresponsive, only registering about half my touches and swipes. I've opened the multitouch app when its acting up to confirm its the digitizer not responding. Rebooting fixes this second issue.
[Nexus 7 General] Eckless:
Regarding this "thumbs" issue (which I discovered I had last night), does anybody know if some units do NOT have this issue?

(Translate: Is it worth returning, or will they all have the same issue?)

This issue is problematic for me because I play "Pinball Arcade" all the time, and as a pinball sim you usually have both thumbs pressed at the same time at the bottom of the screen. Frequently one flipper will start pulsating -- it's the issue shown in the YouTube video above.

Thanks!

Eckless
[Nexus 7 General] electricjelly:
For me all three nexi I've tried have had this issue. Ive been able to live with it because the problem goes away completly when I'm holding the nexus or if I have it plugged in to either a charger or headphones. Seems to be a grounding issue of some sort. The funny thing is even when I'm holding it with the case on it still resolves the issue.

I gave up on trying to find a flawless nexus. The first one had screenlift and this digitizer issue, the second one had horrible light bleed coming from the left side and a blue tint plus the digitizer issue, my current third one just has this digitizer issue, everything else is fine so I'm happy with it. I hope google uses a different manufacturer for there next tablet.
[Nexus 7 General] benegessrit:
Rebooting every time can get annoying.

Try just locking it (briefly press the power button) and then unlocking again (without touching the screen when you press the power button the second time to unlock it). That usually fixes it for me.
[Nexus 7 General] electricjelly:
Thanks, Ill give that a try next time. Luckily it doesn't loose responsiveness that much. Both times it happened the unit was hot, once in the car on a hot day and once after processor intensive processes.
[Nexus 7 General] Nick James:
I have a C80 and mine also does this... The touch screen on these devices aren't the greatest. So far its my biggest complaint- any advice? I've had this for about 24 hours...
[Nexus 7 General] mi7chy:
iPhone5 touch screen issue makes this look insignificant:

http://www.youtube.com/watch?v=JtvMMSx4CdY&feature=g-upl

https://discussions.apple.com/thread/4326234?tstart=0
[Nexus 7 General] stijndebruin:
me too

also have the issue.

Both the one where strange behavior occurs when nexus is on an isolated surface. When axis cross it will loose touch input on one of my fingers and flikker strangely. When I touch the headphonejack it disappears.

Also loss of sensitivity, which seems random to me which is solved when I turn the screen of and on again.
[Nexus 7 General] webslasher:
are these issues related to how tegra-3 handle touchscreen or just a mere grounding problem ?

if you read http://www.nvidia.com/object/tegra-3-processor.html there's a feature called nvidia direct touch, dont know if related but could be
[Nexus 7 General] abbagnato:
The multitouch problem exists even in the Galaxy SII with 4 fingers...but it's probably just a grounding problem.

I'll post a video later showing this behaviour...
[Nexus 7 General] styckx:
Both seem like a non-issue. The multitouch path thing is no concern to me as I have never used my tablet laying flat on a table like it takes to even replicate it. The thumb `pad' issue is also a non-issue (imo).. I've tried holding it with one hand and using my thumb the way that guy in the video showed and it's the most un-natural feeling to use your entire thumb pad to the degree it takes to cause it to spaz out. I had to force myself to use my pad. It's just instictive and natural to bend your knuckle so your thumb points down to the screen.
[Nexus 7 General] DrHenley:
I just discovered that the new Kindle Fire HD has exactly the same problem! None of my other Android devices exhibit this problem, only the Nexus 7 and Fire HD.
[Nexus 7 General] LahiruRD:
I have no problems. I can go up to 10 fingers, no problems at all
[Nexus 7 General] Teqonix:
I've recently updated to the official 4.1.2 build and all my touchscreen issues have all but disappeared. I can use my whole thumb/ index finger pad and play games without issue.

I certainly hope this is a permanent thing and not just a fluke, but it feels like a whole new device being able to trust the touch screen to do what I intend.
[Nexus 7 General] danizwam:
I cannot confirm that.

4.1.2 and buggy as usual...
[Nexus 7 General] stijndebruin:
I am on PA2.2 (cm10, 4.1.2 base). I no longer have random loss of touchscreen sensitivity, but I still have the problem when crossing axis and tablet is lying on a non conductible surface.

When I lay it flat on a metal plate or even a laptop, tho problem is gone!
[Nexus 7 General] LargePig:
Just try playing Magic Piano. You'll notice that you end up only being able to hit some notes in a chord as you're trying to hit with 4 fingers on the same Y position.
[Nexus 7 General] Melidian:
XPeria Play presenting the same problem

Just to let you know,

The XPeria Play I have is presenting the same problem.

When held in my hand, everything works fine.

But once on a plastic surface, if I touch the screen with two fingers, the touch points go crazy when the axis (vertical or horizontal) cross.

One point disappears completely or reappears with a different color in the Multitouch test visualizer, sometimes up to the point the app force closes.

Still on the same plastic surface, if a third finger touches the phone casing when two are touching the screen, I can cross again the axis of the two touch points without problem.

Apart from this, and independently from the 180° Dead Trigger bug reported solved in a previous post, I am experiencing the 180° swing bug on Dead Trigger or Dead Space from time to time. This is when I play with the sensitive touch pads of the Play (no direct screen contact).

Madfinger apparently makes mention on the Google Play Store than the game was not tested on Sony Ericsson devices.They add :"if you encounter any issues, please report them at contact@madfingergames.com", So I will send a mail now.

Cheers
[Nexus 7 General] grifter.be:
Got the same issues... and i have it bought two days ago....

Should i replace it?
[Nexus 7 General] AZImmortal:
If you bought it two days ago and the issue is still present, then it means that they still haven't fixed it and it would be pointless to replace it based on this issue alone because all of them will have this problem.
[Nexus 7 General] grifter.be:
Yet, some forum firends i know, do not have this problem.... Strange....
[Nexus 7 General] AZImmortal:
Did you actually test this for yourself? They might not be testing it the same way.
[Nexus 7 General] grifter.be:
Ahha, now one have tested it, and he seems to be having it too... Weird...
[Nexus 7 General] grifter.be:
So,, Any updates on this matter..?
[Nexus 7 General] D_Viper:
hi guys, i have this problem to, i have one question: if i use the original case for this devise, made by NON conductive material, i'll have this problem even when i have nexus on my hand???
[Nexus 7 General] khaytsus:
Zero problems here, I used 8 fingers and dragged them all over, across each other, etc, except for when very close together no snapping together, no axis crossing problem, etc.

And I tested up to 11 touches, no problem. I'm a dude, so I can manage that.
[Nexus 7 General] dwd3885:
My advice if you have this problem is to call for rma
[Nexus 7 General] mi7chy:
I'm running into this issue too:

http://xdaforums.com/showthread.php?p=29184549#post29184549

I'm thinking it's possible autorotation has something to do with this. Games tend to launch in landscape mode with USB connector to the right but I've been forcing autorotation where the connector is on the left due to location of charger. I'm going to do some further tests to see if I can replicate in the preferred landscape mode. Also notice there's no way to disable autorotation.

Btw, DON'T BLINDLY RMA without due effort to at least understand the issue and find the root cause.
[Nexus 7 General] PROlific666:
Mine only does it on a flat surface which to me is a non issue since that would be awkward as hell to play any multi touch game like that.
[Nexus 7 General] Brishen:
I can replicate it in landscape and mode up to about 45 degrees. It's not a autorotation issue
[Nexus 7 General] wsrider:
same here nothing to do with autorotate. plus Ive done a complete restore after testing it on a couple custom roms and its now 100% factory with the same issue.

---------- Post added at 05:15 AM ---------- Previous post was at 05:14 AM ----------

ER3 here.
[Nexus 7 General] jaroslavj:
Lets try to keep it in one thread to easily find the solution. http://xdaforums.com/showthread.php?t=1779652 this one is bigger so mods please maybe close this one ;)
[Nexus 7 General] rgunara:
the other thread looks to be a different problem where touches are not detectable (more of a defected device). this thread is more of a software bug or it could be hardware related issue that could be affecting all devices. that's what this thread is trying to figure out.
[Nexus 7 General] Brishen:
These two issues are unrelated.
[Nexus 7 General] Dorkington:
I used the Visible Test app, and I have zero issues.
[Nexus 7 General] lin013190:
I'll test out when i get home