Develop Bugs

[Q] I have the grounding issue (bad screen sensitivity)

Hi everybody! I have been reading here that some people had this issue, but I don't see how they solved it. I've had this issue since the beginning.
Basically, screen sensitivity is very bad when the device is unplugged, only when it's plugged in or holding it with both hands it responds correctly.
This is a problem for me, because for studying, i put the a100 on its stand case, and only need one finger to slide a word or ppt. With this grounding issue, i have to touch the a100 with both hands to make it react properly, it's very annoying and uncomfortable.
Should I take it to the technical support? it's a hardware problem? I tried the build.prop from crossix and still the same. And tried the recalibrate.apk without any success. I don't know what else I can do.
I'm still in guarantee, i'm thinking seriously to take it to SAT. But i have unlocked bootloader, how can i revert it? How should i prepare the device to keep manteining the guarantee?
people who sent the a100 to SAT with this problem, it was solved?
thanks, I really need a fix for this

I have installed the official ICS rom and now it seems locked again, and I'm not root anymore. I think it's prepared for SAT, so I've called acer technical support, they will take the tablet for repair on tuesday 15.
I will post the results when they send it back to me, if someone is interested.

Did you try it after the update to ICS? the OTA ICS updates did wonders for the sensitivity of most of our tabs.

Yes, this is happening since the beginning when I bought the tablet with honeycomb, and still happens in ICS. Let's see if the technical support can fix it! because I really love this a100 thanks!
it makes any difference to upgrade by OTA or by flashing the rom that's here? I have flashed ICS, not by OTA

Is your build .14? That's the one that seems to fix the touchscreen problems.

I have had the touchscreen issues since day one also. Same issues, works fine without a case in two hands, one handed or laying it on a table/couch the screen is jumpy, random touches, and glitchy multi-touch. I've run 3.2 gen2, ICS .014, and ICS .017. I've even popped it apart looking for something simple (and to take a look at the wifi antenna), but nothing obvious found. I would have to guess it is a manufacturing defect.

jakob95 said:
Is your build .14? That's the one that seems to fix the touchscreen problems.
Click to expand...
Click to collapse
Yes it's that build (downloaded from the russian link)
This happens also in the a100 of my uncle. He has not yet the build .14, but I'm starting to think this build won't work to fix that.
I thought this build would fix the problem, but...
I want to believe it's a problem with some tabs and I had bad luck, and that technical support will fix it.

I've made this video showing the problem.
http://www.youtube.com/watch?v=yIGnXT22vhA

Definitely a problem with your tablet, mine is perfect.

I have similar problem but not bad us yours .. but iam out of luck because i buy it from ebay with no gurantee

I will send it tomorrow, we will see what happens xD

today my dear tablet have been sent to be repaired. I hope it will be with me soon again! xD I'll keep informing!

I've just received an email saying that my tablet is repaired! they will send it to me in the next days, very fast! I don't know if this is good or bad... xD

aishaz said:
I've just received an email saying that my tablet is repaired! they will send it to me in the next days, very fast! I don't know if this is good or bad... xD
Click to expand...
Click to collapse
Well about all I can do is wish you good luck buddy

I just got a refurb off of ebay and it has a 90 day warranty thru Acer, and the fella I purchased it from.
I am not having any issues with the screen even using the stylus they sent with it.
I tried the stylus to see what the hype was with a stylus and found it to be just that hype.
Do you have any type of screen protector on your tab?
Sometimes certain ones can cause issues.
If your device is under warranty I would let them fix it.

yes I have a screen protector, but the issue is there even without it.
I will tell you when i recover my tab and see if it's fixed xD

yea its the device itself i had problems with mine.. it had become completely unresponsive after i rooted it and installed ics i sent it back to the factory took almost a month and got a new one i suggest u do the same

How do I get a new one? today I have received mine and the problem doesn't seem fixed I wonder what they did to think it was resolved

aishaz said:
How do I get a new one? today I have received mine and the problem doesn't seem fixed I wonder what they did to think it was resolved
Click to expand...
Click to collapse
To be honest I didn't think the problem would be resolved. Contact them again and tell them the problem is not resolved; I'm sorry to say this seems like a design issue.
On the other hand, maybe you are being overly critical? My tab works well, but if I want to make the touchscreen seem less than perfect, then I would have no problems doing so. However, in practice this is a non-issue, and I have not had a problem with either my previous tab (which I sent back because it stopped charging) or my current tab (which I've had for 5 days). Of course, this is after upgrading them to official ICS releases.

I don't think I'm being critical, the fact that I can't slide a document properly without having to hold the tab with both hands is very very annoying for me, since I want it to study and the idea was to keep the tab in a stand in the table and touch it only for sliding for example. I stopped using it for this purpose due to that.
Moreover, my mother has another cheaper tablet and tactil control works so much better... In the same situations that my tab. I envy her for that, cause my tab is over 200€ more expensive and it's suposed to be better xD
I have an exam today, i will try to find time to call acer to tell them the problem is not solved.

[HARDWARE FAULT] [BSOD] Blank Screen of Death : Information Board - Updated 29/07/12

A few users have reported a Blank Screen of Death, with myself included.
The problem being that the phone's display doesn't switch on when you wake up the device. At this time, Everything else will including the Digitizer and Capacitive buttons.
I have spoken with HTC service centers across Australia and NZ to come to the conclusion that this is a motherboard problem. The infamous flickering issue seems to be involved also, which ends up shorting out the video driver.
The issue isn't just limited to the screen not displaying anything either, there's also the possibility that the back light will cut out, and sometimes leading to corruption on the display.
This isn't just with some devices either, it seems like anyone that has had the screen flickering issue are at risk of this.
To give you an idea of how much it costs to fix this issue, I was quoted at $250 AUD for just the motherboard alone.
The best part is, HTC may also deny your warranty for unlocking your bootloader, as they have with me.
I'll be posting more information as it develops.
EDIT 29/07/12 :: I'm going to request a transcript of my last conversation with HTC but until then, they're denying that this is a problem and saying that it's the user's fault. How? We use our phones to much, or inappropriately.
It's becoming obvious that they're trying to avoid spending anymore money fixing these issues, and have decided just to move on and release a new One X model. (according to news sources.)
Also, Boobinator just posted a video of the One X's screen corrupting while it isn't stuck under the BSOD which you can see here and here
Just to recap.
When the initial issues were found with screen flickering and corruption on the display, we were told it was a software issue.
Many months later, I along with many of you are still experiencing it, even though it's not nearly as bad as it once was.
Now there are growing reports that One X's are starting to lose their displays, and the poly-carbonate weakening and bending the antenna pins. (You can find more information here)
This is something you should all be aware about when purchasing this phone.
Best of luck!

Reserved.

Update Bump

Maybe us in America can file a class action lawsuit? I'm no lawyer here but anyone with better understanding of American consumer laws chime in?
This is problem that occurs with normal usage of the phone.

Another day, another hardware issue. HTC is going down the drain, im hugely disappointed in the way they are handling this mess. Improper testing, too slow to fix problems or ignore/deny them. Bull**** games about unlocking and warranty and now they are already talking about releasing more phones. Its easier for them to move on to a new model than to do the right thing and do a complete recall. Is this a QC issue or a design flaw, with all the negative reports I'm thinking its the latter.
HTC better handle this properly, they need to stop development on all new products untill this is solved.
Sent from my HTC One X using xda app-developers app

Can u please send me details about the store that sells the motherboard ?
I have the same problem...and I need my phone fixed !
Thx

Is this the same flickering that happens in some ROMs when you rotate the phone?

Mine too
This just started happening to mine Nothing displayed on the screen, but it still responds to inputs. Even rebooting into fastboot, same problem. So everything is functioning except the display.
Have just handed it back to vodafone for repair, don't like my odds with the unlocked bootloader though :/

I had this issue on Viper or Android Revolution, but not on other ROMs. But I'm starting to get wifi issue, scratches, scratches on camera lins. I should buy S3, not this.
Sent from my HTC One X using XDA Premium HD app

sent it back because of flickering. I just hope they will fix the problem properly and change the motherboard.
Sent from my Legend using xda app-developers app

This happened to my Incredible S too if any one's interested.....
I'm not buying the HOX, I'm sorry. There's just too many different issues for too many people with this phone. It's an expensive top of the line phone, that does appear to be pretty shoddy put together. I don't care if it's under warranty and I have dumbass-insurance if I break it, but I can't send my phone inn all the time even if it's free. You shouldn't have to send it in at all.......
I presume now know we know why HTC is loosing money, market share and their stocks are going down....

This happened to me too, about a month ago, the phones been in repair since then(1 month, are you freaking kidding me HTC). I also unlocked the bootloader, lets see whether HTC charges me or not.
Also, I managed to get the display to work(somewhat) after shaking the device a bit. But even after that the display wont work properly, I even have 2 short videos of the screen acting weird when i got it to work. Here they are - Video 1 Video 2
Sorry for the ****ty quality, got it on my iphone. This was after I shook the device and the display magically started working. Even with the display working you can see it is really weird, even unresponsive at times.

So guys, there are a lot of places you can buy motherboards from, but they will charge you a lot more than what it's worth mainly because of the shortage within HTC.
I'm so sorry all of you are going through this, but i think we need to raise awareness of this issue. People are buying these phones without realizing there's a good chance they're going to have either bad WiFi antenna's or even a bad motherboard.
Send this to your friends, post it around, contact HTC.
Best of luck!

I am having this problem as well, as well as the WiFi antenna issue. The WiFi antenna somehow bent itself somehow, because after a while it was back to normal signal strength, so I didn't feel like sending the phone away for a month. But now with this screen issue it really is unusable, so it seems I don't have a choice anymore
EDIT
Here is a picture of an example of what happens:
http://i.imgur.com/ScIaM.jpg
And here are two 1 minute videos of what happens:
http://www.youtube.com/watch?v=HIY0_Hy2_mA
http://www.youtube.com/watch?v=WYXXvu11f3o

may heat have damaged gpu? it looks like when pc's video card is about to fail (like faulty memories or damaged gpu)

CAPSGUY said:
I am having this problem as well, as well as the WiFi antenna issue. The WiFi antenna somehow bent itself somehow, because after a while it was back to normal signal strength, so I didn't feel like sending the phone away for a month. But now with this screen issue it really is unusable, so it seems I don't have a choice anymore
EDIT
Here is a picture of an example of what happens:
http://i.imgur.com/ScIaM.jpg
And here are two 1 minute videos of what happens:
http://www.youtube.com/watch?v=HIY0_Hy2_mA
http://www.youtube.com/watch?v=WYXXvu11f3o
Click to expand...
Click to collapse
Heat damage.

I doubt it's heat damage, i hardly played games on mine and it had that problem. I think the most i played was Triple Town, and that was it.
Also, wouldn't it be a massive problem if it was heat damage? That means the tegra 3 processor can't handle stress, and given that the phone inherently has heating issues, this just draws the conclusion that the Tegra 3 is bad news?

it may be a faulty soc

From what I've heard, it's been linked directly to the flickering screen problem. Which could mean that the first batch of One X's have all faulty Soc's? I mean, it's not uncommon for there to be manufacturing difficulties for the first few batches, but this is just absurd.

Atrixx said:
From what I've heard, it's been linked directly to the flickering screen problem. Which could mean that the first batch of One X's have all faulty Soc's? I mean, it's not uncommon for there to be manufacturing difficulties for the first few batches, but this is just absurd.
Click to expand...
Click to collapse
Not all of the first batch flickered. Stop exaggerating.

G2 types by itself, is unresponsive

Hey all, I've had my G2 for over a year now and I love it. A few days ago, the phone started going haywire. The screen has become unresponsive in some cases, while in other cases, it seems to have a mind of its own. It literally starts typing and keeps typing by itself (it seems to like typing the number 4 a lot). I tried installing another rom (CM7), but to no avail. Sometimes if I have the keyboard open, it helps a bit, but it doesn't totally stop the phone from doing things on its own.
If anyone know why this is happening and especially how to fix it, please give me a heads up.
Thx

Techngro said:
Hey all, I've had my G2 for over a year now and I love it. A few days ago, the phone started going haywire. The screen has become unresponsive in some cases, while in other cases, it seems to have a mind of its own. It literally starts typing and keeps typing by itself (it seems to like typing the number 4 a lot). I tried installing another rom (CM7), but to no avail. Sometimes if I have the keyboard open, it helps a bit, but it doesn't totally stop the phone from doing things on its own.
If anyone know why this is happening and especially how to fix it, please give me a heads up.
Thx
Click to expand...
Click to collapse
Lets just say your device has come to an end or you probably overworked it during its "youthful" days is quite common but for the time you have used it, it should still have alot of life in it i've had mine for over a year and its still cool. For the solution i think you should send it to the technical guys maybe an HTC service center or any good mobile service center cos i totally think this has nothing to do with software its hardware.
HIT THANKS IF I HELPED

Techngro said:
Hey all, I've had my G2 for over a year now and I love it. A few days ago, the phone started going haywire. The screen has become unresponsive in some cases, while in other cases, it seems to have a mind of its own. It literally starts typing and keeps typing by itself (it seems to like typing the number 4 a lot). I tried installing another rom (CM7), but to no avail. Sometimes if I have the keyboard open, it helps a bit, but it doesn't totally stop the phone from doing things on its own.
If anyone know why this is happening and especially how to fix it, please give me a heads up.
Thx
Click to expand...
Click to collapse
It's very likely that the screen digitizer has been damaged somehow, as this random touch signal behavior is a typical telltale. As you have verified that it's not a software issue by testing it in another ROM, a screen replacement would be likely needed. Send it back to HTC for a repair/replacement if yours is still under warranty, otherwise there will be third-party repair shops that you can consider.

Thanks for the responses guys. Sounds like dtt hit the nail on the head. I'm gonna look into replacing the digitizer myself. I think I can do it without a problem, and I don't have much to lose anyway if it goes wrong since the phone is unusable right now.

Multitouch problems poll

Download some multitouch app
Put one finger on the screen for touch 1 and keep it still. Use another finger for touch 2 and try slowly bringing that touch 2 on the same Y or X axis as the first. Move around and do just try different positions for touch 2.
To elaborate the options:
1 - Perfectly fine
2 - If you hold touch 1 still, and start moving the 2nd touch either close to it or on the same X/Y axis you'll see that the 1st touch starts moving a little and waving up and down
3 - 3rd touches are shown even though you only have 2 fingers on the screen
4 - Just goes nuts, touches everywhere
Trying to decide whether or not to return it, I have until this saturday to decide. I'm at 2, so it might just be purely janky software and a small update would be enough but if it's hardware I'd like to try again.

Perfect here. :laugh:

JayceOoi said:
Perfect here. :laugh:
Click to expand...
Click to collapse
Think it might be worthwhile exchanging it or getting a refund? My problem is that if you slowly line up the axis, the touches will start moving around a little. It's not bad but I don't want it to become even worse over time

fedreta said:
Think it might be worthwhile exchanging it or getting a refund? My problem is that if you slowly line up the axis, the touches will start moving around a little. It's not bad but I don't want it to become even worse over time
Click to expand...
Click to collapse
According to the other threads and AndroidPolice its a software issue with the calibration figures that Google is aware of. I have the issue you talk about by the way.

MattDN93 said:
According to the other threads and AndroidPolice its a software issue with the calibration figures that Google is aware of. I have the issue you talk about by the way.
Click to expand...
Click to collapse
Are you on stock Rom/kernel? Considering trying Cyanogenmod to see if it fixes it like some people report it doing so

fedreta said:
Are you on stock Rom/kernel? Considering trying Cyanogenmod to see if it fixes it like some people report it doing so
Click to expand...
Click to collapse
No, only got the device a day ago so still on stock everything...thanks for the advice though!

I'm stock unrooted and two fingers seem fine but one finger sometimes registers as two especially moving up and down the vertical axis I also have trouble with letters repeating or the wrong characters being typed on the keyboard

MattDN93 said:
According to the other threads and AndroidPolice its a software issue with the calibration figures that Google is aware of. I have the issue you talk about by the way.
Click to expand...
Click to collapse
I don't like the fact that we've been able to demonstrate that this problem goes away if the unit is grounded by either your hands or the plug but acts up when unplugged on a table. I'm not sure that supports their opinion that it's software. Sounds like a hardware defect to me. But we'll see. I'm on my 2nd unit with this problem. They have 14 more days again, after which if not resolved will be returning and waiting for the Mini2 in Oct.

fedreta said:
Download some multitouch app
Put one finger on the screen for touch 1 and keep it still. Use another finger for touch 2 and try slowly bringing that touch 2 on the same Y or X axis as the first. Move around and do just try different positions for touch 2.
To elaborate the options:
1 - Perfectly fine
2 - If you hold touch 1 still, and start moving the 2nd touch either close to it or on the same X/Y axis you'll see that the 1st touch starts moving a little and waving up and down
3 - 3rd touches are shown even though you only have 2 fingers on the screen
4 - Just goes nuts, touches everywhere
Trying to decide whether or not to return it, I have until this saturday to decide. I'm at 2, so it might just be purely janky software and a small update would be enough but if it's hardware I'd like to try again.
Click to expand...
Click to collapse
Option 2 for me its un-noticeable outside of multitouch games

I retested on the table not holding the n7 and I get behavior similar to the video. If I'm holding it, the problem is less pronounced, but still there. I also have trouble with the app drawer on nova launcher not detecting that I want to drag an icon to the home screen
Sent from my Nexus 7 using Tapatalk 4

For me is a 1. I have a July build 16gb and i have no issues at all. For my father he has a July build 32gb and his would be a 2. It's unnoticeable unless I open up the multi-touch app and cross plains but it's very very minimal and it doesn't happen very easily. In fact with using his I would have sworn it had no issues until I used that app.
>^.^< Sent from meow HTC One which is like catnip to me atm

I meant to select the third option, but the touch screen decided to pick the fourth option.

Unresponsive touch screen...

Has anybody noticed an intermittently unresponsive touch screen after the latest OTA? I haven't had any problems since they fixed the original problem way back when.
It goes completely unresponsive and I have to reboot several times to get it to work until it stops again. I'm assuming this is a hardware issue on my end since I haven't heard anybody else talking about it but I just wanted to make sure.
I think I will try a different kernel and/or ROM to see what that does.

Hi,
I have the same issue here, it started a few days ago for me. Up till today I just had to reboot but now it seems completely blocked... I will try again later but this is becoming really annoying

.

I had the same happen to me about 2 months ago. Happened around an OTA.
In the process of trying to replace it. Tried flashing recent factor images but no luck

I've had exactly the same issue as described. Hardware buttons work fine, but no response to touch. Started intermittently and got progressively worse until there is no touch response at all.
The first time this happened, I contacted google support, and they arranged a replacement. That was in June.
The replacement device has now developed the same fault, which progressed in the same way as the first device.
Just got off of the phone with Google support, and my second replacement is now on it's way.
Fingers crossed for 3rd time lucky.

Same thing...
This has started to happen to me -_- replacement is on its way. Doesn't seem like the problem is being fixed more or less just addressed...

DG android fanboy said:
This has started to happen to me -_- replacement is on its way. Doesn't seem like the problem is being fixed more or less just addressed...
Click to expand...
Click to collapse
Sadly they don't think the Pixel c is important enough but least the RMA is straight forward.
Sent from my Pixel C using Tapatalk

Hertshammer said:
I've had exactly the same issue as described. Hardware buttons work fine, but no response to touch. Started intermittently and got progressively worse until there is no touch response at all.
The first time this happened, I contacted google support, and they arranged a replacement....
Click to expand...
Click to collapse
Ditto here. Just received "refurbished" (was actually new--factory wrap, unopened) replacement unit two days ago. Had my initial Pixel C about 10 months with zero issues. Then, a couple weeks ago, touch responsive became spotty, typically cured by putting tablet to sleep and waking. Progressively got worse until no touch response whatsoever. Physical buttons worked fine. Factory reset, tried flashing prior OS versions, etc. Nothing worked. Stock / unrooted.
But, Google customer service was very cool about the replacement.

How were everyone able to contact Google Support? I have the same problems with the touch screen, but am not able to find a way to contact Google about it. I had bought mine straight from Google Store.

DukyY said:
How were everyone able to contact Google Support? I have the same problems with the touch screen, but am not able to find a way to contact Google about it. I had bought mine straight from Google Store.
Click to expand...
Click to collapse
Top right hand corner, "contact Google" > https://support.google.com/store/troubleshooter/3070579?hl=en

I had the same problem after an OTA Security update yesterday. Booting into recovery and erasing cache fixed it for some time, then problem reappeared. Can be fixed by repeating the procedure. Seems a software problem to me.

Same problem. I can't even get it unlocked now as nothing registers.
Sent from my ZTE A2017U using XDA-Developers Legacy app

I guess this is just a hardware issue because it happened to me twice and both times Google provided me with a new tablet. The only advice I can give you is to contact the support because in my opinion nothing can be done at our individual level...

Will they still replace out of warranty? Purchased Dec 21, 15. Tablet had been flawless until yesterday.
Sent from my ZTE A2017U using XDA-Developers Legacy app

Hmmm I highly doubt it, but you can give it a try. Did you try to factory reset yet, just in case?

Yes, initially​it was slightly working as of Wednesday and I factory reset. No change, but it registers no touches now so I can't even unlock it.
Google is getting me a replacement so I thank them greatly for that.
Sent from my ZTE A2017U using XDA-Developers Legacy app

yeah, google did the right thing by shipping a replacement, bill3508. i just hope whatever hit your device is isolated.

2 issues I've come across lately with my Pixel C tablet:
1. Touchscreen unresponsive
The tablet has lost touchscreen responsiveness. When I touch the screen, nothing happens. Buttons pressing ok - it works.
I have connected the device to the PC by Vysor app. Using a mouse from PC I can manage. I tried diagnostics in programming options (I've turned on show touches on touchscreen and localization of the pointer) but no touches detected however mouse moves yes.
Rebooting didn't help - many trials. Safe mode neither.
I haven't done a full recovery to factory settings yet. I am afraid of loosing USB debugging mode. Looking foreward to finding software resolution before warranty replacement.
2. Power button doesn't light up the screen - possibly backlight fault (software?)
After few trials with power button the screen shows up. Sometimes I try reboot but the problem returns. It is randomly, sometimes after one pressing power buton, sometimes lastlky after few trials withe few rebooting.
When I put the tablet on light (a lamp or sunshine throug window) I can see the view of the screen darkly. So there is the view but without brightness.
Android 7.1.2, N2G47D

I have the same problem now.. However I've noticed the following: When the device is in the case which covers the screen and has a magnet, the problem will persist. If removed from the case and left for a day outside, the problem is gone (so far at least). I will return the device for a replacement and hope google can replicate the issue. Anyone else using a case with a magnet?

Yes I have the same problem and also a magnet case. But for me the problem is not gone, after removed from the case and left for a day outside .
Now I get a replacement from google.
Should I now no longer use a case with magnet? Is the case the reason for a broken pixel c?