Develop Bugs

[Q] Advice on unlock/digitiser issue

Hi
I upgraded to my new DHD less than 3 weeks ago. It is not rooted and I did the recent OTA update over Christmas.
Over the last couple of days I have started to experience difficulty unlocking the device on the slide-to-unlock screen. The problem seems intermittent - somethimes it will unlock fine, and other times the slider just seems to "get stuck" at the bottom of the screen.
At first I thought this a bug or something, but after some investigation I am concerned there is a problem with the digitiser. I opened a picture and zoomed in to fill the screen and tested the touchscreen in different places by sliding the picture around. What I found was that the bottom 1cm of the screen above the keys does not respond properly to Up and Down swipes. It is fine however with side-to-side and also individual taps. This is obviously a problem when trying to move the unlock slider!
I've had a screen protector on for about a week - I don't imagine this has caused the issue but haven't removed it to test as yet as I don't have a spare. Aside from this, the device has been very well looked after, definitely no bumps etc and kept in an HTC leather pouch.
Any ideas? Should I return it to CW?
Thanks

OK, I seem to have resolved this for the time being but expect the problem to return.
I downloaded a screen test app that allows you to draw on the screen and got some very strange results. A 1cm band of screen about 1cm up from the bottom was completely unresponsive. Trying to draw a horizontal line within this band would result in lines being drawn either above or below it, or strange vertical lines "jumping" around. The rest of the screen was fine. I realised this is why I have been struggling to close the keyboard - the button is placed within this band and trying to press it would result in on of the buttons above or below being pressed. Also have had problems with the sapce bar.
I did a restart (not fast) and this has resolved the issue, however I expect it may return as I did a restart only yesterday.
At least it is obviously software and not the digitiser....

Hi again. As expected, the issue returned after a couple of hours. This time however, restarting is not making a difference.
I resorted to a hard rest, which has not changed anything either.
Any help/ideas would really be appreciated...

Best to return it for repairs or exchange. Seems like the digitiser is faulty.
Sent from my Desire HD using XDA App

olivierlee said:
Best to return it for repairs or exchange. Seems like the digitiser is faulty.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
I agree, this definitely sounds like a hardware problem.

[Q] Weird touchscreen behaviour (only works when keyboard is flipped out?)

Hi everyone,
I've had my Desire Z for little over 2 years now and two months ago (was running CM7.2 at the time) I started getting a weird issue where my touchscreen would only be responsive when the keyboard was slid out (so the opposite problem of what quite a few other people have reported where the touchscreen becomes unresponsive when the keyboard is out). The status LED would also stay off whenever the keyboard was closed, and the keyboard backlight didn't come on anymore at all. Also, I had to make sure that the keyboard was slid out during boot, if the phone booted without the keyboard out the screen would not become responsive at all until after another reboot. My earpiece speaker stopped working around the same time so I was wondering whether it was just an issue with the flex cable becoming a bit loose, but the touchscreen would consistently start working again when I flipped the keyboard out, and also the physical scroll button on the top bit would always work, so I was still hoping it would be some weird software issue.
I then upgraded to Flinny's (amazing) Andromadus ROM (build 22, complete data+dalvik wipe) after which the keyboard backlight started working again, but the rest remained pretty much the same. Since then the touchscreen issues have been getting worse, so that I sometimes have to flip the keyboard in and out again a few times, or turn the screen on or off with the power button several times before it becomes responsive again, but then it tends to work fine until I lock the screen again, with no noticeable dead spots anywhere on the screen. I've had days where it worked all day without problems (except having to flip out the keyboard, that's been a constant for the past two months), and then today I haven't been able to get the screen to do anything at all even after dozens of reboots.
I've already bought a new digitizer and am all ready to put it in (I'll have to replace the broken earpiece anyway), but was wondering whether anyone has any thoughts on whether it could still be a software issue after all, or if anyone has experienced anything similar? The thing with having to flip the keyboard out to get not only the touchscreen but also the status LED to work is just so weird and makes me doubt that it's a pure broken digitizer or lose flex cable issue, so I'm wondering whether it would be better to first try reverting to a stock ROM before taking on the messy sticky glue stuff (I should be fine but still, never done it before)?
Many thanks!

From what you describe my best guess would be the main flex cable is what needs to be replaced. Flash a touch based recovery and see if you have the issue there as well, if so its very unlikely that its anything but a hardware fault
Sent from my Nexus 4 using Tapatalk 2

Thanks for the heads-up, I've been playing around a bit more with software and I do manage to get the screen working again occasionally, typically after the second boot into a newly flashed ROM or restoring a backup, and only until one or two reboots later when it becomes completely unresponsive again. I've tried CM 7.2.0 as well as Flinny's Andromadus 10, and it is only complete flashing that does the trick, cache wipe or factory reset alone does nothing. The two occasions where the touchscreen worked were still limited to when the keyboard was flipped out, and it also had to be flipped out during boot, otherwise nothing would work. I've learned to navigate my way around the phone by just using the hardware navigation button, but I'll have a close look at the flex cable when I take it apart to replace the earpiece speaker tonight...

Hello,
so I took my dear phone apart yesterday to replace the broken earpiece - everything went fine but after reassembly the replacement earpiece isn't working either, which leads me to think that all those little broken bits might actually be related to some contacts being a bit lose, all in the same region. Should've thought about that earlier really since the earpiece and the LED (only works when keyboard flipped out) are both in that top region that the digitiser data presumable also has to run through before passing through the flex cable.
In any case, I also took a picture of the flex cable which is slightly bent but doesn't seem straightforwardly damaged (see attachment, that thing on the right is *not* a rip). Think it's worth trying to replace it anyway?
What was truly bizarre is that after the first boot following reassembly the touchscreen worked quite consistently for the entire evening - I thought I might've fixed a lose contact by un- and replugging the digitiser cable, but then the screen went nonreactive again at some point. I wonder if the working screen was again actually related to some software reset caused by the battery being taken out for so long? In the meantime the actual screen and trackball are still working away perfectly. Bizarre.

Just to let people know the solution to the mystery: the increasingly odd behaviour was actually caused by an initially small rip in the flex ribbon cable that got bigger and bigger - it's actually half-visible in the picture I uploaded above, only that the rip is where the cable comes out from underneath the case, and not where it's wrinkled!
Just in case it could be useful for anyone, here's the (top half of phone) components in the order in which they failed on me, which I guess corresponds to the order of the respective data lines in the ribbon cable (from the top of the phone towards the center):
environment brightness sensor (I thought that the sensor had been broken for almost a year, but as soon as I rebooted with the new flex cable I noticed how my phone stopped shining into my face at full brightness - if your brightness sensor gets stuck reporting the same (low) value this means your flex cable is on its way out!)
earpiece speaker
status led
touchscreen
screen (non-alignment with edge of screen, visual artefacts)
screen (fade to black/power interrupt)

obstacle3 said:
Just to let people know the solution to the mystery: the increasingly odd behaviour was actually caused by an initially small rip in the flex ribbon cable that got bigger and bigger - it's actually half-visible in the picture I uploaded above, only that the rip is where the cable comes out from underneath the case, and not where it's wrinkled!
Just in case it could be useful for anyone, here's the (top half of phone) components in the order in which they failed on me, which I guess corresponds to the order of the respective data lines in the ribbon cable (from the top of the phone towards the center):
environment brightness sensor (I thought that the sensor had been broken for almost a year, but as soon as I rebooted with the new flex cable I noticed how my phone stopped shining into my face at full brightness - if your brightness sensor gets stuck reporting the same (low) value this means your flex cable is on its way out!)
earpiece speaker
status led
touchscreen
screen (non-alignment with edge of screen, visual artefacts)
screen (fade to black/power interrupt)
Click to expand...
Click to collapse
I'll for sure keep that in mind. Mine is still going strong for the time being, but it's good to know some warning signs if I need to replace parts or if it's time to get a new phone

fireball0093 said:
I'll for sure keep that in mind. Mine is still going strong for the time being, but it's good to know some warning signs if I need to replace parts or if it's time to get a new phone
Click to expand...
Click to collapse
Replacement parts all the way, the repair was 15$ and it feels as good as new! Well, it could do with a new battery but that's just another 5..
Just realised that the proximity sensor should actually be added to the very top of the list - just noticed that faint red light when taking a phone call, don't remember seeing that in almost a year :]

obstacle3 said:
Replacement parts all the way, the repair was 15$ and it feels as good as new! Well, it could do with a new battery but that's just another 5..
Just realised that the proximity sensor should actually be added to the very top of the list - just noticed that faint red light when taking a phone call, don't remember seeing that in almost a year :]
Click to expand...
Click to collapse
That's not a bad cost at all. I know I'm going to have to replace my keyboard in probably 2 months or so (maybe sooner) because some buttons are starting to not work. Other than that fact my phone is currently still going strong for being going on a 3 and a half year old phone

[Q] Touchscreen and sound problems.

Hello.
I'm using my nexus for a couple of months now (device is assembled in november 2013), and there are two issues that really bother.
First of all, response of touchscreen is not always correct: it sometimes misses some touches (press the letter on a keyboard, for example - and nothing happens until 3-4-5th touch) or handles single touch like multitouch (scrolling through the page in browser with one finger suddenly acts like two-finger gesture). It usually happens on the top half of the display and while tablet lies on flat surface, but not always: I have noticed same behavior in hands. There are no exact circumstances that show that bug always and for sure, but it appears once a day or two. Today, though, it didn't respond to touches at top half at all, and when I ran a multitouch test, I saw this: http://youtu.be/XwEDCwUZ8h8
The other thing is upper loudspeaker. While it is on, a weird high-frequency sound is present. I can not describe it exactly, but I have recorded an example: https://dl.dropboxusercontent.com/u/71375852/%D0%B7%D0%B2%D1%83%D0%BA1.mov In fact, it is louder: I can hear it from a distance of 10-15 centimetre, and it is even louder if device is charging. But verdict of service-centre said, that this is a software issue, manufacturer is awared and will fix in oncoming ROMs.
So the questions are:
1) How common are these problems? Are there any fixes yet? Are the any people who had a replacement or moneyback because of the issues?
2) Are there any official feedback from Asus or services that recognise these issues as hardware fault which requires a repair or replacement?
As I said, my service-centre did not confirmed the sound issue as hardware issue and they also did not notice the touchscreen bug. But the device still had a 20 days repair: the battery was replaced because of unstable work. According to our laws, I need 10 more days of repairs to get a replacement of the device or have the money back. But there should be exactly a repair of a fault which is covered by warranty: it won't work if after 10 days service will just return the device, saying it had worked properly. So any information about these issues would be really appreciated.
Thanks for any responce.

[Q] Touchscreen behaves erratically when charging

Hey All
Today I picked up an HTC One M8.
Have set it up and only had it up and running for a few hours.
I plugged it in to charge using the charger that came with it and noticed that the screen would become erratic. Phantom touches would register making it very hard to use. Have tried it in different sockets but the issue remains.
I have tried a spare charger that I have in the house and the issue is not present.I know the HTC charger is a little different in that it supports some kind of quick charger, so its not really a like for like swap I guess.
Is there a chance that the included charger is faulty? Or could the phone be at fault?
I really don't want to have to return it but will it it looks like its the phone that has an issue.
Thanks

Well, at this point its hard to guess from here. Can you upload some snaps/videos ? It would be helpful for anyone who visits the thread. It doesn't take much time either. :good:

Is it a brand new phone? if not I think the digitizer is going bad.

scorror said:
Is it a brand new phone? if not I think the digitizer is going bad.
Click to expand...
Click to collapse
Yeah it's brand new. Phone is fine off charge and when using other charges. It's just the stock charger tat seems to cause issues.

warpkid said:
Hey All
Today I picked up an HTC One M8.
Have set it up and only had it up and running for a few hours.
I plugged it in to charge using the charger that came with it and noticed that the screen would become erratic. Phantom touches would register making it very hard to use. Have tried it in different sockets but the issue remains.
I have tried a spare charger that I have in the house and the issue is not present.I know the HTC charger is a little different in that it supports some kind of quick charger, so its not really a like for like swap I guess.
Is there a chance that the included charger is faulty? Or could the phone be at fault?
I really don't want to have to return it but will it it looks like its the phone that has an issue.
Thanks
Click to expand...
Click to collapse
Do you have a case on your phone? I have a UAG case and the charger sometimes doesn't fully click leading to that behaviour. Without the case there is no problem using the phone while charging.

Maybe the stock charger is faulty. Probably the wires has lost continuity.

I have the same issue with a unofficial charger (2.0A).
No issue with original charger (1.5A)

You are not alone
I also have a HTC One M8 with the same problem!
I have to disconnect the USB cable so that I can use the phone correctly without 'phantom touches' activating things I didn't want.
A classic example is pressing the back button will more often than not take me to google now. It's not supposed to do that. It only ever does this when charging.
Also when using any app the phantom touches will activate things I didn't want it to. Some apps will indicate which button you clicked and this is the perfect way to see this problem in action, because buttons will be clicking that you didn't even touch.
It's almost like the touch screen becomes ridiculously sensitive and even just a touch of breeze from a fan can activate a phantom touch.
My phone has done this since brand new. I've had the phone for around 3 months now. There was a software update since I had the phone and it didn't fix the problem.
It does this for me with the stock USB cable, samsung USB cable, generic USB cable, charging from AC/PC/Car it doesn't matter.
It even has the problem when the battery is at 100% with the cable connected.
The only way to accurately use the phone is to unplug the cable!
I'm in Australia on the Telstra network
Android: 4.4.3
HTC Sense: 6.0
Software: 2.23.841.1
HTC SDK API 6.25

Erratic Touch on Verizon HTC One M8
This has been driving me mad.
Got Verizon Variant Red HTC One M8 near the beginning of August.
I bought a spigen clear case, a longer usb cable, and a 2AMP charger to use at work. I was chewing through the battery while playing Clash of Clans on it at work.
I pretty much always turn on visual feedback for touch on my smartphone now and noticed sometimes while playing Clash I would see multiple touches go in a horizontal line across my screen (if you do not know you play clash of clans in a horizontal position so technically the lines would run vertically down the phone)
I also have a tempered glass screen on my phone so I figured it was some kind of freak nuance with the case pushing the glass or something.
Bought a UAG Case for my phone, few days later I notice the same behavior, bought cases have a small "lip" to protect the screen if you drop the phone face down, I again figured this must be the culprit and bought a new case.
Barely there Clear case by casemate, I have had the case for 3 days and today is my first day at work since, immediately upon connecting my charger I noticed the erratic touch behavior.
At this point I realized it was never the case, it has to be something with charging in general or the specific charger I am using.
Anyone got any clue what is actually causing this issue?
Links to all of the hardware I mentioned in this post for clarification:
iXCC-SMART-Capacity-Travel-Charger/dp/B00HPTU0OU/ref=sr_1_16?ie=UTF8&qid=1410767078&sr=8-16&keywords=2+amp+charger
Hi-Speed-Braided-Tangle-Free-Charging-Motorola/dp/B00HZXYYQ6/ref=pd_cp_cps_2
Case-Mate-Barely-There-Case-HTC/dp/B00IZFYI28/ref=sr_1_1?s=wireless&ie=UTF8&qid=undefined&sr=1-1&keywords=barely+there+htc+one+m8
Spigen%C2%AE-STRONG-FLEX-Release-Capsule-Premium/dp/B00IF5B218/ref=sr_1_6?s=wireless&ie=UTF8&qid=1410767095&sr=1-6&keywords=htc+one+m8+case
URBAN-ARMOR-GEAR-Case-HTC/dp/B00IEFUB3E/ref=sr_1_1?s=wireless&ie=UTF8&qid=1410767120&sr=1-1&keywords=uag+htc+one+m8
EDIT: not enough posts to post links, but if you just insert the standard amazon address in front of all of those you'll get to the items in question.

Hi guys, any news?
I'm experiencing the same issue and this is driving me mad.
Experiencing this with different chargers. My cover is a Spigen Ultra Hybrid Metal Slate...if I put it off, theres no problem while charging
Greetings from Switzerland

Hi guys,
I have faced the issue as well. In my case, if I charge the phone using the dot view case then the touchscreen behaves wrongly. However, if I charge the phone with no case at all it works fine.
Anyway after I flashed the latest firmware (.401.6) the problem is gone. What firmware do you have?
Cheers.

Hi Guys,
For anyone interested, I have just noticed that it happened depending on the charger also.
Cheers.

I have the same problem
Using htc one m8 developer edition 4.4.2. This issue comes with every charger. With or without case or screen protection.

Yep, I've noticed this issue as well. Any solution?

warpkid said:
Yeah it's brand new. Phone is fine off charge and when using other charges. It's just the stock charger tat seems to cause issues.
Click to expand...
Click to collapse
If it's brand new, take it back for a replacement. The sooner the better because the longer you wait, the more they may think it is user caused.

I just got my phone replaced due to bad mic. I had a brand new one on release day and now I got a refurb both suffered the same issues. It's not always that it does it but it certainly pisses you off. Same symptoms as the op describes, I have yet to find a permanent solution.

This is so super irritating. I feel you. I just found out though that it occurs when I have my case on.. So whenever i use the phone when I'm charging I have to pull the case off. It really doesn't make any sense lol but this is my workaround for this bug.

I also have the same problem
It seems to occur when the phone is close to full charge. Every app goes crazy. When I unplug the charger it returns to normal.

jaycaplan said:
It seems to occur when the phone is close to full charge. Every app goes crazy. When I unplug the charger it returns to normal.
Click to expand...
Click to collapse
I have the same issue with mine; I found a website which said to do the following:
Using two fingers swipe down on the status bar then touch the gear icon > Display & Gestures > G-Sensor calibration
Place your phone on a flat surface then touch Calibrate.
After the calibration process has finished tap Ok.
You should also calibrate the finger touch on your screen to deal with the keyboard issue.
Open “Settings” and go to “Language and Keyboard”
Tap “HTC Sense Input”
Tap “Advanced”
Tap “Calibration tool” (Calibrate your screen for a better touch experience)
Now you are asked to type the given sentence
One done, Calibration Complete message appears
Hit “Reset Calibration” to reset screen to factory default
Click to expand...
Click to collapse
It's still present, but it hasn't been as bad - I turned on the visual feedback in the developers settings, and you can watch the cursor fly all about the screen like it's possessed!

Same issue here, on the latest software. This is my second m8 with the same issues.

OP 3 shuts down after I lock it

Hi there,
I recently changed the screen of my OP 3 because it fell on the floor and did not show anything afterwards (I don't know if this only damaged the screen or also other parts of the phone).
Now, the screen works very well and and the phone does turn on as well (I even type this with my OP3). But I now have two problems:
1) My phone shuts down almost immediately after I lock it (after one or two seconds I can still unlock it but after 5 seconds or so it is dead). It does not shut down while the screen is on, though.
2) It heats quite a lot during using and especially during charging. I know, this seems to be a general issue with older OP phones and happened to me as well, but never to that extent (after charging 30 min it gets overheated which never happened before).
Plus, there are two issues that might or might not be related to these to problems so I add them as well: My volume control buttons did not work before the screen replacement, which is quite odd, because the power button works well. And I think I have destroyed the home button/fingerprint scan while changing the screen.
What do you think, is there any hope of solving these problems without having to buy a new phone?
Best, thank you all!
Clemens

Oneplus 3's sides buttons assembly is really fragile. When i was replacing my screen i replaced it too. With my second display, i broke the replacement button ribbon and installed the original one. So you might broke it.
For screen issue, are you using latest OxygenOS? Because some custom roms have issues with third party displays.

clemenssayshi said:
Hi there,
I recently changed the screen of my OP 3 because it fell on the floor and did not show anything afterwards (I don't know if this only damaged the screen or also other parts of the phone).
Now, the screen works very well and and the phone does turn on as well (I even type this with my OP3). But I now have two problems:
1) My phone shuts down almost immediately after I lock it (after one or two seconds I can still unlock it but after 5 seconds or so it is dead). It does not shut down while the screen is on, though.
2) It heats quite a lot during using and especially during charging. I know, this seems to be a general issue with older OP phones and happened to me as well, but never to that extent (after charging 30 min it gets overheated which never happened before).
Plus, there are two issues that might or might not be related to these to problems so I add them as well: My volume control buttons did not work before the screen replacement, which is quite odd, because the power button works well. And I think I have destroyed the home button/fingerprint scan while changing the screen.
What do you think, is there any hope of solving these problems without having to buy a new phone?
Best, thank you all!
Clemens
Click to expand...
Click to collapse
Most likely a hardware issue. To confirm, clean flash OOS latest version (9.0.6 I think) and check. If it is ok, your problem is solved. If not, there are too many variables (screen, volume, home button and any other thing that you disturbed while replacing the screen) to trouble-shoot.