Multitouch crossing axis

[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.

Sent from my Nexus 7 using Tapatalk 2

 

[Cynnthetic]

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.

Sent from my Nexus 7 using xda app-developers app

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.

 

[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?

 

[AZImmortal]

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?

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?

 

[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.

 

[Solange82200]

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.

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.....

Sent from my Nexus 7 using xda app-developers app

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

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.

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

Sent from my Nexus 7 using xda app-developers app

 

[dilldoe]

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.

simplest solution is to plug in earbuds.

 

[Nippero]

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.....

Sent from my Nexus 7 using xda app-developers app

---------- 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

Sent from my Nexus 7 using xda app-developers app

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.

 

[dilldoe]

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?

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 ----------

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.

it's not improper contact, it's just not enough grounding. try placing it on a baking pan and the issue disappear

 

[Solange82200]

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.

Please try and keep us updated, thanks!

Sent from my Nexus 7 using xda app-developers app

 

[AZImmortal]

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.

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.

 

[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.

 

[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.

 

[sdhanjal15]

When I put my whole thumb on the screen. It jitters

Sent from my Nexus 7 using Tapatalk 2

 

[ahfpired]

I've experienced an issue with just a single-touch with the full pad of my thumb or index finger:

Kind of a shame since it's such a high quality tablet otherwise. I'll have to try out grounding the screen with headphones, charger, etc. to see if it's grounding or something else.

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....

 

[Draje0]

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!!!!

Same problem with the thumb as well.

 

[ahfpired]

Same problem with the thumb as well.

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....

 

[AZImmortal]

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

Placing the tablet on foil paper and touching the foil fixes the problem....

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).

 

[ahfpired]

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).

Should I just send it for repair? I'm really disappointed with this issue.

 

[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).