[Q] USB Connected - Screen Accuracy Drops to Zero? - Fascinate Android Development

Hey guys.
Any time I connect the phone to my computer via USB, the phone's touchscreen goes bonkers. It wont register my touch in the correct location, it jumps around and registers button-presses that I never pressed, or won't register a firm screen-press at all!
If the USB is unplugged, everything zips along accurately.
Any idea what might be causing this, and how I might fix it?
Just a quick background:
I rooted and installed the lag-fix. I encountered a problem with the lag-fix, restored factory settings, and root/lag-fixed again. The problem cropped up after the factory restore.

BTownTKD said:
Hey guys.
Any time I connect the phone to my computer via USB, the phone's touchscreen goes bonkers. It wont register my touch in the correct location, it jumps around and registers button-presses that I never pressed...
Any idea what might be causing this, and how I might fix it?
Just a quick background:
I rooted and installed the lag-fix. I encountered a problem with the lag-fix, restored factory settings, and root/lag-fixed again. The problem cropped up after the factory restore.
Click to expand...
Click to collapse
That's wacky. Since you've already done it once, I'd just restore again and see if that fixes it.

Also... not sure if this is a side-effect of the factory restore, but guess what suddenly appeared in my Widgets list??
Google Search!

BTownTKD said:
Also... not sure if this is a side-effect of the factory restore, but guess what suddenly appeared in my Widgets list??
Google Search!
Click to expand...
Click to collapse
Using LauncherPro by any chance? It's been showing up with LP since Day 1.. If not, that's pretty darn cool then.

namebrandon said:
Using LauncherPro by any chance? It's been showing up with LP since Day 1.. If not, that's pretty darn cool then.
Click to expand...
Click to collapse
Oops... launcherPro.
I've since reset the factory settings again; no luck. Still all wonky when USB is plugged in.
I'm considering taking it back to best buy and simply exchanging it for a different one, since I've only had it for a day. I would think that resetting everything to factory defaults would have fixed any software problem. Maybe this is a hardware problem that I just now noticed.

I have heard roomer, that if your usb is to low or to high of a voltage it will bork up the touch screen while plugged in.

it seems a common occurrence on many Android phones that use our style of USB port that if you use a 3rd party usb cable (i.e. one other than what shipped with the phone) as well as many 3rd party usb wall chargers that the touchscreen will either go bonkers or freeze up alltogether.
I've seen the exact same thing happen with my friends HTC MT3G and Motorola CliqXT using certain cables and chargers. Any cables/chargers that do this to my Vibrant do it to their phones too.

Interesting. I'm glad I read all this before I decided to take it back;
the laptop I had it plugged into is so fubar'd, that it would not surprise me to find that it has incorrect voltage...

This happens all the time on my Droid 2, Nexus and Fascinate. I just swipe very quickly and press lightly. However, no matter how many "tricks" I try it's still hard to flip through screens or open the correct app. Hardest task would be to navigate a website. Considering it happens on multiple Android devices and computers I never really put too much thought into it. Just figured it to be a Android bug.

Wow, never seen this. Now I do use the cable that came with my fascinate to plug into my computer, however car charger, wall chargers, and a USB charger (in my truck), I just use the cables from my Droid1. All my chargers are generics... Hmmm..

my htc touch pro 2 did the same thing when i used a gps car charger... screen went crazy

chargers
Ok. So for anyone wanting to know what's going on in the background to cause problems with your phone with crappy chargers....
I first discovered this with another touch screen player *cough*ipodTouch*cough*cough when I was trying to make a universal 4-port USB charging bay that would work with my sansa and my ...other player.
The specification that most device-manufacturing companies use nowadays for charging states that for a device to recognize a charger (and to start accepting a charge from the charger), the data pins must be shorted (connected together). This is what Sandisk, Apple, and several others are using. That is how I built my 4 port USB charger and it works flawlessly (with my sansa, ipod, galaxy, and Cowon S9).
NOW, somewhere floating around on the net are specs that state that some data must be sent/received through the USB's data cable (i believe it claims to need any 2.5V) which basically puts some resistors in to make a voltage divider.with the power and ground and data pins. THESE ARE BAD SPECS. They might have been legit in the past for some other device, but they are NOT what our phones need.
So some of the cheap, off-brand chargers are actually sending random messages to our Phones through the data pins (non-sense 2.5 volts). I haven't heard any reports of this damaging the phone or mp3 players yet, but whenever I plug mine into a charger and I lose the ability to control the screen, I get nervous b/c I know there is voltage on the data pins, and I don't know if it's the correct amount. So I get nervous
...does that make sense?

I had the Droid and the first time I saw that, it freaked me out. It seems to be an issue with touch screen android phones when they don't receive the correct voltage, whether because of a 3rd party cable, or a different computer voltage or something. I was using my blackberry mini usb charger and it would act like it had rabies. Nothing is wrong with your phone.

The charger included is plugged in next to my bed, and I'm using my Droid's USB cable in the computer without issues. That's very strange. I've never heard of this problem.

Kamar234 said:
I had the Droid and the first time I saw that, it freaked me out. It seems to be an issue with touch screen android phones when they don't receive the correct voltage, whether because of a 3rd party cable, or a different computer voltage or something. I was using my blackberry mini usb charger and it would act like it had rabies. Nothing is wrong with your phone.
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Sorry dude. It's not just android handsets, and it doesn't (seem) to have anything to do with the proper voltage. I've taken multimeters to the chargers. They are providing the proper ~4.5-5V range. It has to be the data pins.
Although, that's just the chargers I've had. Take a voltmeter to your usb chargers (don't touch the casing at the same time!) and see what their voltage is. But a low voltage just wouldn't charge your phone, and a high voltage would damage it.

Related

[Q] Weird screen problem

Hi,
I've had a problem with the phone out of the box: when the phone is connected to the charger (non Samsung charger) or the USB in the computer, the touch screen bearly responds. I try to use the phone but it's like the touch panel does not respond, or sometimes it responds and some time it doesn't. Once I disconnect the charger, it goes back to being fully functional.
Does anyone else have this problem? Is there a way to fix this? Is there an app in the market to test whether there is a problem?
Gosh, I hope this is not a HW problem..
Thanks.
I'm guessing that the flow of the electricity might be causing interference to the capacitive sensor as I've experienced this a couple of times on my SGS1.
Haven't had this issue though on SGS2.
Some of the HTC Evo 4G phones had a similar issue when it was launched last year. HTC was able to fix it with a software update. But I don't know if your phone ihas the same underlying cause. If it is easy for you to return, you may want to try that rather than waiting for a fix.
I have a Galaxy S1 and had a similar problem. I bought a non samsung usb cable to charge my phone and it caused it to be unresponsive while connected. As soon as I disconnected it, the phone returned to normal. I bought some samsung data cables from ebay and never had the problem since.
A friend of mine had a Blackberry (i think), and used my samsung cable to try to charge his phone in my car. It never worked.....or atleast his phone never said it was charging.
My guess is the cables may have the same connector, but the wiring my be different.
I could be completely wrong though, but this is the experience I had with the original galaxy s
I've had the same problem with the galaxy s 1. No matter what charger I used though charging via usb made it better.
Happens with a lot of phones, Aridoasis above hit the nail on the head.
If you read the manual you will see that it say that that will happen of you are connected to an unstable power source. Which I think will happen when the cable used to charge the phone somehow doesn't match it.
This happens to me when I used a standard micro USB cable to charge it. But goes away when I use my ATRIX's USB power charger
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[Q] Returning My X2 with Eclipse ROM

After a good long while my X2's microSD port stopped working. So now I can't charge it, or connect it to my computer. I took it to a Verizon Wireless store and they confirmed that the port looks fine, but doesn't work. They had me a replacement shipped. I have the one they just sent me working fine, but I have to return my old one. The old one with the messed up port has Eclipse v2.3 on it, and I don't know how to get it back to a stock ROM without being able to connect it to my computer. It says in the shipping paperwork that they can charge me the full retail price for several reasons, including "software alterations." I can get to the stock bootloader of course, but bootstrap requires me to be plugged in to the AC charger. Any help would be appreciated. Thanks guys.
When you say doesn't work... do you mean absolutely zilch or will it charge?
Nothing
tallyforeman said:
When you say doesn't work... do you mean absolutely zilch or will it charge?
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I mean absolutely zilch!
Have you tried wiggling the USB plug on your cable when it's connected? Sometimes, it might be really loose. I'm assuming you and Verizon tried, especially if you took it to Verizon and they confirmed it wasn't working.
I'm also assuming you've tried different cables just in case? I do know that if you don't use a cable that was made specifically for the X2, it might not have enough power to charge. I have noticed that with my RAZR (and my X2 before that), using USB cables and chargers that were NOT specific to the RAZR/X2 worked fine for a while and then they wouldn't work or worked sporadically. I would have to wiggle the cable to make it "register" but one slight movement would then cause the phone to say it was disconnected from the charger.
But, if I used the car charger or charging cable that came with my RAZR/X2, it worked fine.
I know some people have also tried bending in the outside part of the USB port more towards the inside so that it results in a tighter fit for the USB connector on your cable and that has worked. But, you definitely want to be careful if you're returning it.
Otherwise, it's probably something on the actual circuit board inside where the port has broken away from the logic board and is no longer registering to the phone when something is connected. At that point, I think you're done.
Thanks for the Ideas
iBolski said:
Have you tried wiggling the USB plug on your cable when it's connected? Sometimes, it might be really loose. I'm assuming you and Verizon tried, especially if you took it to Verizon and they confirmed it wasn't working.
I'm also assuming you've tried different cables just in case? I do know that if you don't use a cable that was made specifically for the X2, it might not have enough power to charge. I have noticed that with my RAZR (and my X2 before that), using USB cables and chargers that were NOT specific to the RAZR/X2 worked fine for a while and then they wouldn't work or worked sporadically. I would have to wiggle the cable to make it "register" but one slight movement would then cause the phone to say it was disconnected from the charger.
But, if I used the car charger or charging cable that came with my RAZR/X2, it worked fine.
I know some people have also tried bending in the outside part of the USB port more towards the inside so that it results in a tighter fit for the USB connector on your cable and that has worked. But, you definitely want to be careful if you're returning it.
Otherwise, it's probably something on the actual circuit board inside where the port has broken away from the logic board and is no longer registering to the phone when something is connected. At that point, I think you're done.
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Thanks for the ideas, but I already tried all of those with no luck. There was about two days where I could still charge it with some manipulation of the connection, but no more.
What about a different battery, tried a ifferent one?? If the battery is shot, that can create a headache in its own world.
Battery's Good
tallyforeman said:
What about a different battery, tried a ifferent one?? If the battery is shot, that can create a headache in its own world.
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Nope, the battery is fine. It's working well in replacement phone.

Help: Only seeing "USB" when charging from wall chargers (multiple)

Does anyone know what might cause this? Is it a problem with my USB port? I noticed it with my home and my work wall chargers.
Before I call Verizon (whom it has been reported is out of Rezounds, and I'm unlocked/rooted), I was hoping for some advice.
Thanks.
An update -- now after I unplug it from an actual PC, sometimes the USB/Charge and USB Debugging symbols remain in the Notifications bar. Could that mean the pins on my actual microUSB port are defective? I've now tested with a 2.1A wall unit too, and every charger I've tried has been a new USB cord.
Oh and just to rule out software I tried in Safe Mode too, no help. Anyone have an idea aside from calling up Verizon (which I will do after my long weekend out of town)?
I've developed the same issue on both of mine I've had. My solution was to simply run a kernel with a Force AC Charge option built in. Have to be careful, however, as the option may cause excessive heating of the battery if you do any intense usage under charging status (playing a game, trying to run GPS navigation, etc.) It rarely poses an issue, but just a heads-up.
You should never use your phone while charging it alwYs turn it off and set it down. When you are charging ylur phone resistors and capacitors are heatingbup your phone now if you are on it talking on it basicly you are heating up the whole board and if it gets hit enough it will losen the solder from the joint and may cause a chip creep effect on the board causi ng varios problems that are very hard to troubleshoot
Sent from my SGH-T999 using xda premium
USB cable
Gig103 said:
Does anyone know what might cause this? Is it a problem with my USB port? I noticed it with my home and my work wall chargers.
Before I call Verizon (whom it has been reported is out of Rezounds, and I'm unlocked/rooted), I was hoping for some advice.
Thanks.
Click to expand...
Click to collapse
Try a different USB cable. I've had cables that would charge only, no data. Drove me nuts, I thought it was HTC drivers. Swapped cables fixed it.
The charger is presenting itself in a way that looks like USB. This is very common because iDevices will not charge at all unless the charger does this, so if a manufacturer wants to support iPhones/iPads, they make the charger in this way. Unfortunately, Android devices limit themselves to 500mA when the charger is made like this. Yes, many kernels have fast charge options that make the phone ignore this, but my advice is to get a charger made specifically for Android. Use the one that came in your HTC box as a wall charger if you can. Get the Verizon branded car charger...it charges Android devices correctly.
Yeah, there are many chargers that leave the USB contacts active. Thing is, I've had an HTC branded one that used to show AC at first turn USB on me... Everything else shows USB too unless I force AC in the kernel. Seems like some other condition, degradation or something.
Thanks for the responses so far. I have tried three different wall chargers, each with a different USB cable. Other phones show AC but not mine. At the moment, plugged into the HTC wall wart, I am being asked of I want "charge only" or "disk drive".
Could this be a software related issue? It was mentioned that some ROMS have a force - AC but I am on the newest non Global RUU, unlocked S On, and rooted with TWRP as recovery.
Bump -- is there any chance the RUU and then unlocking and putting TWRP on could cause this issue? Verizon is trying to get me to run a factory reset to "fix it".
Ugh.

Sign of loose or damaged USB port?

My g3 is about 1.5 years old. It's been doing just great for me. I do have the hairline fracture right along the bottom base of the phone which I believe comes from stress when trying to plug in a USB chord. Mine was pretty tight to begin with and it still is pretty good.
However, I have noticed some issues the past couple of months.
Sometimes, when plugging in my original charging cable, it states it's in slow charging mode. A couple of disconnects and reconnects fixes this. This is rare but it does occur once in a while.
When plugged into a PC, I have to be carefull not to move or jostle the phone or else it acts as if I unplugged the phone and plugged it back in and then I go through all the machinations of allowing the PC to have access, etc.
Item 2 is the most annoying factor. Sometimes, I don't even touch the phone, and I'll hear the sound that the phone was unplugged and then immediately a sound that it was plugged back in. Then Windows pops up a dialog box, the status bar on my phone states it's in install mode, then the phone asks if I should allow the computer to access the phone, and then when I allow it, it's in MTP mode again.
But item 2 happens whether I'm in Charge Only mode, MTP mode, Camera mode, etc.
I'm just wondering if there is some damage to the USB port on the phone or else it might be lose from the main board? I've searched and searched and can't find anyone else with this problem.
I've tried several different cables, and it's the same with each and every one of them. And it doesn't appear the the original cable is damaged. It might be since it's also 1.5 years old, but I don't think so because using it with other devices doesn't cause this issue.
Thanks!
Both my G3 and my G Pad 8.3 are more sensitive than they used to be about their connections to both original and high quality third party ones, although mostly the third party ones.
roirraW "edor" ehT said:
Both my G3 and my G Pad 8.3 are more sensitive than they used to be about their connections to both original and high quality third party ones, although mostly the third party ones.
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Yeah, I'll just chalk it up to good 'ol wear and tear.
It's just annoying if I'm doing something like copying files to/from my phone from/to my PC and I bump the desk or the phone and whoops! Gotta start over.
Need to look at using WiFi for it, but the worst part is if I'm using my phone to test apps I've written (emulator is not a good testing device for a lot of things). So, that also becomes an issue if I'm trying to watch the logcat and it gets interrupted, etc.

Has anyone successfully recovered from the sudden no charging/USB connection issue?

I'm wondering if anyone has suffered with and recovered from the sudden case of no charging/USB>PC recognition?
I've seen countless similar stories across the web, covering many of the Z Family. Some were simple reset jobbies, and I've seen as in-depth as what I'm assuming is an IC being removed, flux cleaned and re-applied (w ww .you tube. com/watch?v=ZyCeNfc99a0).
I purchased a new charger port and also a new battery, as I figured with all the insane constant burning of my pocket, it could use a new one. I'd hoped it was just a charger port issue, but much to my dismay, the issue still persists after fitting them.
I've tried every single button combination "fix", and all to no avail. Multiple leads, charger units, all that polava. Checked and cleaned connections with isopropyl alcohol, checked for burned-out looking mainboard components, at least those that are visible.
I was having minor inconsistent charging issues for a while, up until last Friday. I figured it was the USB port on the phone or the leads, and put it down to general wear and tear.
Last Friday I was at my mates house with super low battery, popped it on charge round his and I noticed it had died completely and kept boot cycling, like the charger was being plugged in and taken out over and over.
I took it out and tried it when I got home with the regular charger, and nothing. My phone is otherwise in mint condition and has been looked after since day one release in the UK.
I'm wondering if some super helpful person here would possibly have some other alternatives that haven't been mentioned, whether a hardware bypass or some trick that isn't amidst the countless cries for help out there.
Many thanks in advance.
Hello,
I have a problem when connecting to a charger it will go in strange charging mode that actually does not charge. It makes the sound like a charger is connected, no charging animation on battery though...
The problem for me it was the USB cable used for charging (i have changed 5 of them in 1 and a half years). Also same behavior happens when using a under 1A wall charger.
P.S. : The USB cables that i have changed they still work fine with other devices/phones .... but not with my Z5C. I`m not sure what but is definetly something wrong withe phone usb port (and it is not dirt).
no, but
I cannot get a usable USB connection to my computer, but if I hold Volume Up while connecting the USB cable to the computer, the charger LED turns red for a moment, then blue. It WILL charge in this mode, which I think is fastboot mode. Someone said it bypasses the charge circuitry or software, which makes me think that maybe I could go into developer mode and turn on OEM unlocking to see if I can stop it from trying to optimize charging. I also have not tried all the USB connection modes yet.
I tried to charge with this blue light technique on the wall charger, but that did not work. Just ran the battery down again and I could not boot the phone.
I know if I press Volume Down while connecting the USB cable to my computer that the charger LED turns green, but I am not sure it will charge in that mode. I think this is for flashing or something, but since my computer does not recognize the USB device no matter what I do, I don't think flashing is an option.
Oh, and when I do charge the phone with the blue light special (old obscure USA discount retailer reference), for some reason the charger LED flashes white every 4 to 5 seconds, but it seems to keep enough charge to get me through at least the day until I can charge again by same method.
Maybe we can keep pooling info here. I got the blue light technique from someone else on this site, so there are people here who know quite a bit about this phone, thankfully.
Well, I had that issue, too (at least it sounds pretty familiar).
https://forum.xda-developers.com/z5-compact/help/wont-off-issues-t3485575
Does your phone also believe to be connected to "something" all the time?
I fear there is some IC fried, although I never dared to open my phone.
My "solution" was to talk my local salesman into giving me a (used, but working) replacement phone, and I did not want him to find any traces of DIY
So, no, I never found a technical solution, probably they just scrapped my phone for spare parts, idk.
The root cause for my error (probably) was a faulty charger, therefore I am pretty sure I fried something hardware-like, but depending on your cause, ymmv.
Anyway, trying to clean your USB port, re-soldering the connector and/or replacing the battery sounds like being worth a try, anyway.
// edit: "cat /sys/class/power_supply/usb/present" used to always output 1, even when not connected. On my now-good Z5C this works like it should (connected ->1, not connected -> 0)
Hey people. I have tried all the tricks for several days. Tried several charging cables. Nothing worked for me. I just brought a new phone, and it came with a cheapo charging cable. Decided to plug it into my Xperia and it worked. Maybe a little fairy fixed my phone when I was out buying a new one. Anyway, I'm love my Xperia Z5. Using it right now. Good luck people

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