Database Users

touchscreen acting up

All of a sudden my touchscreen is acting all weird is there a way to calibrate my touchscreen its not working well at all. If not Ill return for a new one tommrow

How exactly is it acting up? Have you tried "yet another multitouch test"

My first nexus s the left side of the touch screen was unresponsive at times so I returned it. I found that this new one when it is charging the touch screen acts up but once I unplug it, it goes back to normal.

snoboard26 said:
My first nexus s the left side of the touch screen was unresponsive at times so I returned it. I found that this new one when it is charging the touch screen acts up but once I unplug it, it goes back to normal.
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thats my problem

not to rain on your parade, but seeing these threads makes me soo happy that i dont have any of these issues on my NS

I've gone through 2 NS's with touchscreen problems whether charging or not and on any part of the touch screen not just the left side. Gonna exchange for yet another tomorrow

Hopefully i get a good one

New NS - touchscreen is flaky when charging.
I have a brand new NS and have found that the touchscreen is really wacky when charging but seems to be OK when not charging.

New NS - touchscreen is flaky when charging.
I have a brand new NS and have found that the touchscreen is really wacky when charging but seemed to be OK when not charging. I was using the charger for my BT headset. Switched to the charger that came with the NS and the problem went away.

chuckjuhl said:
I have a brand new NS and have found that the touchscreen is really wacky when charging but seemed to be OK when not charging. I was using the charger for my BT headset. Switched to the charger that came with the NS and the problem went away.
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its not the phone its the wall output or the charger ur using

Battery/LED Issue

Hi, I'm hoping someone can help. On plugging the charger into my wife's Desire Z, the LED momentarily went orange (as per usual), but then started alternating between green and orange. Also, from appearing as if the phone was actually charging, it seemed to stop - and indeed has now lost all charge.
The charger works fine on my Desire HD - so it's definitely her phone.
After alot of googling, I've seen mention that this can happen if the battery is overheated, but I can't see how this battery has become so hot - plus, it's been off a day now and still won't work at all.
I'm guessing it's a battery issue, but just wondered if anyone else had experienced a similar thing/had any other ideas?
Thanks in advance.

Sounds like you should get a new battery and try that. The micro usb port might be broken. Does this issue occur when you plug it into a computer?
Sent from my HTC Vision using XDA App

It does exactly the same when plugged into the computer.
Strange!
Will see if I can get hold of another battery at the weekend to try it.

[Q] Touch and charger.

Hey guys,
A friend of mine recently bought this tablet and everything was running very very smooth, until he received the OTA to 3.1 . Besides the wifi bug ( very easy to get rid of ), he is now experiencing a really really weird touch lag. Let me explain: as soon as he plugs the tablet in the charger the touch gets really unresponsive forcing him to slide/touch several times before the tablet detects the input even if the system keeps working as it should, ie no slowdowns etc.
Funny things is this bug only shows up (for now) when he plugs the charger in university while not happening at home.
Has anyone experienced the same? Im starting to think that the charger plug has a defect and is in some way affecting the touch system ( electric\magnetic stuff ) leading this to an hardware related problem, but I want to be sure so maybe we will try to flash something (Are there Acer tools to flash full stock roms?). Tablet is running original rom and recovery, I just messed with the wpa_supplicant files but I dont see how this could be related.
Thanks in advance guys

When my screen is off and I turn it back on when I switch from charger to battery I get laggie for a minute. Same on my notebook and my cell.I believe its to do with changing some power profiles/settings. If you recover in a minute or so its prob fine. If not watch running apps. If you see something running all the time.use a freeze program to trouble shoot if its a rouge app.
Hope this helps to troubleshoot your isssue
If im wrong with this information please just give your correct response to the open. Do not bash my openion.thanks

saw one other thread with similar problem...
http://forum.xda-developers.com/showthread.php?t=1166209
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110 volts
I live in indiana.
When you plug your charger in the fram becomes hot. 110 volts to earth. Just check it, can't be good.

shaun298 said:
I live in indiana.
When you plug your charger in the fram becomes hot. 110 volts to earth. Just check it, can't be good.
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Fram? 110 volts? What are you talking about?
More details - please. "110 volts to earth"? Not making much sense.

My guess, and its just a guess, is that his charger is somewhat faulty and not regulating the power correctly. Ask him if he plugs straight to the wall at university and into a power strip/surge protector at home. If he is, then I would imagine that the power strip is regulating the voltage enough to let the charger work, where the wall outlet is making the charger fail. I'd try a new charger if one is available and see if that fixes the issue...or take a surge protector with him to university and see if that also takes care of it. If he isn't using a power strip at either place, then we are back at square one.

Have you tried going back to an unmodded system to see if that works? (by that I mean remove/undo wpa supplicant).
I have no idea what that problem could be as it seems hardware based by just reading what you typed, but it could be software too which is called into question by the little mod you did.
What I find odd is that it works in one place and not another.
Does it happen when Wifi is off completely? (Just asking because I'm thinking if it has to do with the wifi mod you made, perhaps turning Wifi off and testing would show up something).
I'll just tell you what I would try in that situation.
1. Go back to a stock ROM, fully. No mods, no root, no hacks. Preferably one designed for your region. (We have no idea if any of the hardware in these units is different based on region, which is why I never recommend putting a ROM on the device unless it's 100% certified to be originated from a device purchased within that region).
2. Factory reset. (It doesn't fix everything, but it fixes most software glitches - especially when they're caused by outside sources like apps or settings mess ups).
If it still happens after that then you've at least ruled out all software suspects.

The frame of the a500 is hot. The charger is none polorized so makes no difference which way you plug it into the wall or extention plug is the same. Check your charger to earth and you will see line voltage no mater where it's pluged in, and don't have to be pluged into the a500. They need replaced. Just meter from the outside of the charger plug to ground and you will see the problem. Might not be on all chargers, but I would check mine.

Just check you charger plug to earth without the a500 pluged in, the problem is not in the unit or software just the charger.

teuz said:
Hey guys,
A friend of mine recently bought this tablet and everything was running very very smooth, until he received the OTA to 3.1 . Besides the wifi bug ( very easy to get rid of ), he is now experiencing a really really weird touch lag. Let me explain: as soon as he plugs the tablet in the charger the touch gets really unresponsive forcing him to slide/touch several times before the tablet detects the input even if the system keeps working as it should, ie no slowdowns etc.
Funny things is this bug only shows up (for now) when he plugs the charger in university while not happening at home.
Has anyone experienced the same? Im starting to think that the charger plug has a defect and is in some way affecting the touch system ( electric\magnetic stuff ) leading this to an hardware related problem, but I want to be sure so maybe we will try to flash something (Are there Acer tools to flash full stock roms?). Tablet is running original rom and recovery, I just messed with the wpa_supplicant files but I dont see how this could be related.
Thanks in advance guys
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Click to collapse
I had an issue like this with a palm pre, and the only solution i could determine was that i was using an offbrand charger that wasn't supplying the right voltage/amperage and causing flakiness with the electrical charge on the screen. maybe the charger is damaged, or they're using an off-brand one?

Ty guys and sorry for the late reply. Yeah I was thinking about reverting back to the stock system but unfortunately I'm not very familiar with the tablet scene not having one and since he is a little frustrated atm about his situation maybe flashing a recovery to flash a stock rom isnt really the way to go. Isn't Acer delivering any tool to flash a full rom just to try if that will solve the problem?
Thanks again!

So wait someone is getting 110v from ground to the metal frame of the tablet?
Sent from my A500 using XDA Premium App

Same issue
I found this thread, and this is exactly what's happening to my tablet. When it's plugged in, the screen becomes very unresponsive, and it's very annoying. I can't charge it and use it at the same time. It's not even like galaxy tab 10.1 or ipad 2 where the battery life lasts like 10 hours! I am extremely frustrated about this issue..Mine has this issue at home. I don't bring charger to school, so I don't know about that. I'm really surprised that only very few people actually have this issue..

electrical grounding no good

Anyone has a solution to this?? Should I buy a new charger? I don't want to just waste money if it's not gonna fix the problem.
Thanks.

I had a similar experience to all of this when I was recently travelling by airplane. There were charging outlets (US-style 2-prong) on the back of each seat and my tablet absolutely REFUSED to respond properly to touch when I plugged it in. At the airport, in the hotel, at home, and everywhere else I've used it, it worked properly.
My conclusion: touch screens on A500 are very sensitive to electrical problems. I suspect that an airplane's electrical system isn't as "standard" as everywhere else, and whatever the difference was (a grounding issue, or a voltage regulation issue, or whatever) caused the touchscreen to freeze.
My suggestion to the poster and others with "when I plug in the touch screen stops working": go to another location (i.e., a friend's house, work, school, a coffee shop, etc.), plug in and see if the same problem happens. If it does, it might be your charger, so try someone else's A500 charger at a bunch of locations and see if the the same problem occurs.
I would guess that most people with this problem (not the "when I plug it in it gets for a few seconds" problem, but the "touch screen doesn't work when plugged in" problem) will find a solution lies in their power source, not the A500 itself.

BigWheeler said:
I had a similar experience to all of this when I was recently travelling by airplane. There were charging outlets (US-style 2-prong) on the back of each seat and my tablet absolutely REFUSED to respond properly to touch when I plugged it in. At the airport, in the hotel, at home, and everywhere else I've used it, it worked properly.
My conclusion: touch screens on A500 are very sensitive to electrical problems. I suspect that an airplane's electrical system isn't as "standard" as everywhere else, and whatever the difference was (a grounding issue, or a voltage regulation issue, or whatever) caused the touchscreen to freeze.
My suggestion to the poster and others with "when I plug in the touch screen stops working": go to another location (i.e., a friend's house, work, school, a coffee shop, etc.), plug in and see if the same problem happens. If it does, it might be your charger, so try someone else's A500 charger at a bunch of locations and see if the the same problem occurs.
I would guess that most people with this problem (not the "when I plug it in it gets for a few seconds" problem, but the "touch screen doesn't work when plugged in" problem) will find a solution lies in their power source, not the A500 itself.
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Thanks for your suggestion. I'm actually moving to a new home tomorrow, so I'll try the new power outlet. Hope it won't have problems like right now..

Touch Screen doesn't work on airplanes.
sw6lee said:
Thanks for your suggestion. I'm actually moving to a new home tomorrow, so I'll try the new power outlet. Hope it won't have problems like right now..
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I have run into another problem related to touch screens - mine doesn't work on airplanes. I think that there is some sort of pressure differential issue - the screen works fine on the ground, but once I open the tablet when the plane is at altitude, the screen just stops working - it doesn't matter if the tablet is plugged in or not.
Annoying to say the least. Last night I pulled out my wireless mouse to use the tablet, and a stewardess noticed this and told me to put it away as wireless devices aren't allowed on airplanes.......
Any suggestions?

Screen insensitive to touch on the botton right corner during charging

Hi, I have got the Note for a few weeks now and loving it to death.
However, I have found an irritating problem. The screen becomes insensitive at the bottom right corner during charging, which became apparent to me when I had a hard time swiping the notification bar back up.
I have done the touch test by pressing *#0*# to confirm the problem and it only occurs when connected to a usb cable during charging and only with the fingers and not the S-pen.
I am wondering if it's my Note that is faulty or can someone verify that its happening on their Note too by doing the touch test?
Thank you.

mojojojo811 said:
Hi, I have got the Note for a few weeks now and loving it to death.
However, I have found an irritating problem. The screen becomes insensitive at the bottom right corner during charging, which became apparent to me when I had a hard time swiping the notification bar back up.
I have done the touch test by pressing *#0*# to confirm the problem and it only occurs when connected to a usb cable during charging and only with the fingers and not the S-pen.
I am wondering if it's my Note that is faulty or can someone verify that its happening on their Note too by doing the touch test?
Thank you.
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Click to collapse
Are you using the stock charger? My GSII screen would go nuts when hooked up to a charger I bought at WalMart.

mojojojo811 said:
Hi, I have got the Note for a few weeks now and loving it to death.
However, I have found an irritating problem. The screen becomes insensitive at the bottom right corner during charging, which became apparent to me when I had a hard time swiping the notification bar back up.
I have done the touch test by pressing *#0*# to confirm the problem and it only occurs when connected to a usb cable during charging and only with the fingers and not the S-pen.
I am wondering if it's my Note that is faulty or can someone verify that its happening on their Note too by doing the touch test?
Thank you.
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Click to collapse
Just got mine, and it was working fine until the KL7 OTA update. Now, when charge is low (below 30%) the bottom right 1/8th of the screen will only respond to pen touches, doesn't matter if it's charging, or plugged into USB.
When the battery gets about 35%, and no USB connection, it'll accept finger input. Plug the USB cable back in, and that area goes dead to finger input again.
I'm using the supplied USB cable, tried also using cables from my SGS1 and SGS2, and chargers from the SGS1, SGS2, original Tab, and Tab 8.9 chargers. Problem persists.
This happened totally stock, unrooted. Did a factory reset and flashed KL7 using Odin, but it didn't help.
I'm in the process of downloading KL3 as I type this, once that's done I'm going to flash it, see if it's still a problem.
If that doesn't fix things, I'm suspecting that it's a battery voltage issue, which may be fixed with a new battery, or a good clean charge.
I'd return it, but it's gray market imported.

davidusr said:
Are you using the stock charger? My GSII screen would go nuts when hooked up to a charger I bought at WalMart.
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Various, including stock and straight out from the pc usb port. Same outcome.

No change with KL3. Pretty sure now it's a battery or shielding issue, and livable.

mojojojo811 said:
The screen becomes insensitive at the bottom right corner during charging, which became apparent to me when I had a hard time swiping the notification bar back up.
I am wondering if it's my Note that is faulty or can someone verify that its happening on their Note too by doing the touch test?
Thank you.
Click to expand...
Click to collapse
No, your note is not faulty. It depends on which charger are u using.
When i use Galaxy s+'s charger, it behaves exactly what have you describe. but when connected to note's charger, no insensitivity whatsoever.
And strange part is, some user experiencing reverse effect......
Check out this post :
http://forum.xda-developers.com/showthread.php?t=1406956

I'm have having the same problem. It doesn't matter which charger I'm plugged into, or into my computer, the screen becomes kind of strange, and the keyboard becomes very insensitive.

anyone found a solution ?
right corner problem still the sme after i flash abyss kernel 4.2 anyone help?

I had exactly the same problem when it was on gingerbread. I went to samsung service center and they replaced the display. Dont ask me the logic behind it. But i have no problems after that. May be its a hardware fault.
Sent from my GT-N7000 using xda premium

I have returned my first SGN to the shop due to this problem. It may not respond at all around bottom right conner when laid horizontally. This is not depending on plugging to charger and make the shop accepted my return.
My new SGN from other shop still has blinded area on bottom right corner but not too big like the first SGN. I think this may be normal for SGN.
Sent from my GT-N7000

My note and galaxy s did this with cheap chargers or USB cables plugged into a wall charger with USB that were off Ebay.
Switch to a Samsung, motorola or Nokia micro USB charger.

Nexus Imprint not reading while charging

I just noticed that my Nexus 6p is having an extremely hard problem reading and unlocking my phone when it is charging. Is anyone else having this problem? I have a case on it but have no issues with it as soon as I unplug my charger.

Why have no one answered this yet? Really wondering about this myself.

No problems for me. But I just tried after it hit 95%, so it would be slow charging. Would have to check the fingerprint unlock during fast charging.

no problems here. my guess is user error. try adding same two fingers 5 times each in different ways.

No issues here. Have to say this fingerprint scanner is amazing. I only recorded my finger once and it works sideways, upside down, half touching. I would try clearing out your fingerprints and record a new one.

Kyocere said:
No issues here. Have to say this fingerprint scanner is amazing. I only recorded my finger once and it works sideways, upside down, half touching. I would try clearing out your fingerprints and record a new one.
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i would love to be able to turn the screen off and lock with the fingerprint scanner. hence - we would never have to touch the power button.

My 5x is having the same problem.Does not reconize my finger at all while rapid charging a lot of the time.No feed back at all when I put my finger on the reader.Works great when off the charger.

No issues here while charging.

No issues while charging

I had the same issue on my 5X this morning. I know what I saw wasn't user error. After charging overnight the device refused to acknowledge that my finger was even on the sensor and would just report "Finger moved too fast" on the lock screen. If I unplugged it the scanner would work fine, but when I plugged it back in it would fail again (did this 4 or 5 times).
Now, 4 hours later, it seems to be working even while charging. So I don't know what's going on, but it feels like some sort of hardware grounding issue with the capacitive scanner. I just wonder if it's related to the device or the person/environment...

Charging and fingerpint not working
Anyone else's fingerprint reader not working when your phone is charging?

Mine works while charging
Sent from my Nexus 6P using Tapatalk 2

I currently have this same issue on my 64GB Graphite 6P, not quite sure what the issue is, hopefully it's software issue and not hardware.

I've got an AUKEY 3 port with 1 that has QuickCharge. I noticed when I have my 6P plugged into the non-QC ports, imprint wouldn't accurately read / unlock and takes 1-2 seconds delay. I swapped the cable to the QC port and it works fine.

Which firmware are you on for those who's experiencing the issue? I was on the old firmware and had that problem

Working fine here on my OEM charger.

chubby65 said:
Mine works while charging
Sent from my Nexus 6P using Tapatalk 2
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So unlocking your phone with your finger is just as quick/responsive with your phone plugged in and charging as opposed to not plugged in?
Mine is super quick to unlock when not plugged in. But as soon as its charging, it seems to take extra time or not even recognize my finger when I try to unlock it with it.

xerox1101 said:
I had the same issue on my 5X this morning. I know what I saw wasn't user error. After charging overnight the device refused to acknowledge that my finger was even on the sensor and would just report "Finger moved too fast" on the lock screen. If I unplugged it the scanner would work fine, but when I plugged it back in it would fail again (did this 4 or 5 times).
Now, 4 hours later, it seems to be working even while charging. So I don't know what's going on, but it feels like some sort of hardware grounding issue with the capacitive scanner. I just wonder if it's related to the device or the person/environment...
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Click to collapse
Dang, I wasn't going to RMA but I guess I will now. I was thinking about it being a potential grounding issue as well last night.
I also have a 64gb Graphite, on MDB08K, and stock charger.

MoNsTeReNeRgY22 said:
So unlocking your phone with your finger is just as quick/responsive with your phone plugged in and charging as opposed to not plugged in?
Mine is super quick to unlock when not plugged in. But as soon as its charging, it seems to take extra time or not even recognize my finger when I try to unlock it with it.
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Click to collapse
Unlocks as fast whether on charge or not
Try registering your fingerprint again see if that helps mate
Sent from my Nexus 6P using Tapatalk 2

Someone else posted on reddit about it being slower with headphones plugged in. I have seen no difference between "normal" and when using headphones or charging. Super fast every time.