Develop Bugs

[Q] Touchscreen unresponsive waking up from standby

Is this happening to anyone else?
The power button and volume buttons work but the screen is entirely unresponsive. The only remedy is to remove the battery. It has happened three times but not predictably enough to reproduce.
The phone is rooted with IORoot and I'm running Xposed, G3Tweaksbox with quite a few of the theming options enabled (inc. status bar and lockscreen contents). I also disabled the Knock feature through the hidden settings. I'm completely aware that customization might be the cause, but curious if anyone else has had similar symptoms or knows of relevant bugs.

Happens to me as well, D855 version. It happens once a day but i can unfreeze it, i keep tapping the screen and pressing randomly power and volume buttons. It unfreezes after 5-6 seconds but it's by no means a FIX. This should not happen on a new phone and i'm thinking of selling mine and buying some other model by a different manufacturer.

No combination of screen presses for any amount of time gets it working. It's happening 4-5 times a day and is only resolved by taking out the battery.
I tried the method from http://forum.xda-developers.com/showthread.php?t=2792580 but my firmware version did not change.

It only happen to me if I disable the Knock feature..Try to activate the knock feature and see if it helped

Thanks, @bollefinn. Enabling Knock does seem to resolve the problem. Of course, it creates new problems with the phone turning on in pockets, but that's of less concern.

bollefinn said:
It only happen to me if I disable the Knock feature..Try to activate the knock feature and see if it helped
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Click to collapse
Disabled in settings or in the hidden menu?

Daum Ex said:
Disabled in settings or in the hidden menu?
Click to expand...
Click to collapse
Hidden menu

bollefinn said:
Hidden menu
Click to expand...
Click to collapse
Well that confirms it i hope. I'll give it a shot...

touch screen stops working

this has happening to me lot now. I could be in the middle of any app and the touch screen will just stop working totally until i lock the screen with the power button and then unlock it.

Just a wild guess, do you have DT2W/DT2S enabled?

aloy99 said:
Just a wild guess, do you have DT2W/DT2S enabled?
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Click to collapse
Yeah, I do have it enabled currently. Is it really that buggy?

3165dwayne said:
Yeah, I do have it enabled currently. Is it really that buggy?
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Click to collapse
I've experienced some issues with DT2W/S on other devices/roms, even when its a feature enabled by the kernel.
Try disabling it.

I'll be sure to try it the next time I have the issue.

bump
happening here as well. noticed the logo used for the "interruptions" settings menu pops up as an indicator at the top of the screen every time this happens. tried changing around the settings within interruptions with no luck. also have dt2w off. imgur . com/KK7riD

sumwhat1 said:
happening here as well. noticed the logo used for the "interruptions" settings menu pops up as an indicator at the top of the screen every time this happens. tried changing around the settings within interruptions with no luck. also have dt2w off. imgur . com/KK7riD
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Click to collapse
Hardware problem
Il you put two fingers and make some pressure between the front camera end the rear side of the phone, the screen becomes alive

Need help! Cant turn off tilt to wake up

I just bought it yesterday and the watch has been updated to 5.0.2. Cant find findthis settingin andoird wear app as the image attached. I live in Taiwan and pair with lg g3. Tks you guys

When you are on that screen, tap on the item that says "Asus Zenwatch Connected" and you'll see the option to adjust tilt & wake.

thank you very much for the advise I was trying to find that setting aswel.

Buggy Zenwatch keeps turning on twist to wake even though set to "Off"!
btonetbone said:
When you are on that screen, tap on the item that says "Asus Zenwatch Connected" and you'll see the option to adjust tilt & wake.
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Click to collapse
My Asus Zenwatch has been buggy as heck lately after the last few firmware updates. The main issue now is that the watch face lights up and comes on whenever I move or twist my arm or hand even though I've set and reset the shake to wake setting to "Off". I've tried resetting and rebooting the watch to no avail. I've noticed that the battery life on my watch has shortened now too as it does not even last a full day! I also used to be able to tap the watch face one time to wake it. Now it does not wake up unless I tap the face two or more times. Sometimes it can't wake up at all and is dead until I press the power reset button on the back of the watch.
It is also constantly vibrating every now and then every few minutes as if I got some notification or lost connection with the phone when none of those activities really happen. It just vibrates and then when I twist my arm up to look at it, it wakes up and lights up even though I have "Shake to Wake" mode turned "OFF"! WTF?

exists2wonder said:
My Asus Zenwatch has been buggy as heck lately after the last few firmware updates. The main issue now is that the watch face lights up and comes on whenever I move or twist my arm or hand even though I've set and reset the shake to wake setting to "Off". I've tried resetting and rebooting the watch to no avail. I've noticed that the battery life on my watch has shortened now too as it does not even last a full day! I also used to be able to tap the watch face one time to wake it. Now it does not wake up unless I tap the face two or more times. Sometimes it can't wake up at all and is dead until I press the power reset button on the back of the watch.
It is also constantly vibrating every now and then every few minutes as if I got some notification or lost connection with the phone when none of those activities really happen. It just vibrates and then when I twist my arm up to look at it, it wakes up and lights up even though I have "Shake to Wake" mode turned "OFF"! WTF?
Click to expand...
Click to collapse
I know you said you reset your watch, but have you done a full factory reset? That should fix just about anything wrong with it...
If that doesn't work, try to pair it temporarily with another phone or perform a factory reset on your phone. Maybe there is an app on your phone causing the watch to go haywire.

Go to setting on Zenwatch and search system update, you will go to 5.1.1, the best version I have see on this watch. Then do a factory reset.
I think this will go fine

AlanRoot said:
Go to setting on Zenwatch and search system update, you will go to 5.1.1, the best version I have see on this watch. Then do a factory reset.
I think this will go fine
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Click to collapse
No that was not the problem. I was already on the latest updated firmware for awhile when all this bugginess happened. Factory resetting the watch did not help.
I did finally uninstall the Android Wear and the Asus Zenwatch Manager apps and cleared those apps data and cache. Then reinstalled them. Did this several times until I got the watch to connect properly and successfully and stay connected. I adjusted all the settings on the phone app itself instead of from the Asus Zenwatch itself and that seems to have fixed my issues. Twist to wake is really "Off" now and the watch does not keep vibrating every few minutes. So hopefully this will not get corrupted again in time (as it seems to have before).

Home button continues pressing?

I've had this issue before on my LG Power (Straight Talk branded LG Leon), running on Lollipop 5.0. No matter what I look for I can't find anyone who's experienced similar issues.
It just happened last night on my 5-day old Nexus. I could not open any of my folders to access apps. As soon as a touched a folder, it briefly showed the animation to open it, and it immediately closed. Whenever I selected a widget or the app drawer, they would immediately close as well. When I attempted to swipe down the notification/quick settings shade, they immediately closed themselves. Turning off the screen resulted in the screen immediately turning back on, albeit locked. I was even having trouble turning the device off because the 'Power Off' menu would disappear right after it popped up. Eventually I was able to time it right and was able to power off. Since I restarted I have not have any issues.
Any idea what gives? I'm unrooted, locked bootloader, everything 100% stock, running MM 6.0.1.

the only explanations i can come up with are:
-accidental touching the area in some way (unlikely)
-getting some substance stuck on the screen in that area (unlikely)
-a faulty touch panel (unlikely and very specific defect)
-a hickup in the software (again unlikely)
then again, if the OS (for whatever reason) thinks the home button is pressed, on default it should not only pull you back to the homescreen, but continue and send you right through to google. the conclusion of which would be, that this UI area is triggered repeatedly rather than continuously.
keep an eye out for what could have triggered it in case it occurs again.
check your settings what build exactly you are running (settings -> about phone -> build number).
ans lastly, if it happens again, you should still be able to hold your power button to hard-reboot it (no further interaction with the UI required).

RockinAmigo14 said:
I've had this issue before on my LG Power (Straight Talk branded LG Leon), running on Lollipop 5.0. No matter what I look for I can't find anyone who's experienced similar issues.
It just happened last night on my 5-day old Nexus. I could not open any of my folders to access apps. As soon as a touched a folder, it briefly showed the animation to open it, and it immediately closed. Whenever I selected a widget or the app drawer, they would immediately close as well. When I attempted to swipe down the notification/quick settings shade, they immediately closed themselves. Turning off the screen resulted in the screen immediately turning back on, albeit locked. I was even having trouble turning the device off because the 'Power Off' menu would disappear right after it popped up. Eventually I was able to time it right and was able to power off. Since I restarted I have not have any issues.
Any idea what gives? I'm unrooted, locked bootloader, everything 100% stock, running MM 6.0.1.
Click to expand...
Click to collapse
Try to clean your screen also with a towel

That is extremely weird. It really sounds like a faulty digitizer, but you'd be the first... Maybe it's a rogue app, but unlikely.
Were you doing something before this starts to happen?

I haven't noticed any consistent apps or behaviors when this would occur. This most recent time, I was low on battery (10%) and I had just flipped on my data.

fyi. you could also just press and hold the power button, for 10 secs, for a reboot ( might come in handy when the screen isn't working properly).

dpj52190 said:
fyi. you could also just press and hold the power button, for 10 secs, for a reboot ( might come in handy when the screen isn't working properly).
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Click to collapse
appreciate the tip! I'll keep this in mind if it happens again.

Finally was able to capture a video. The issue occurred after I was playing around with Open Camera and it crashed. Holding down the power button didn't work when this glitch is happening.
https://youtu.be/4n5vzXlUPqM

RockinAmigo14 said:
Finally was able to capture a video. The issue occurred after I was playing around with Open Camera and it crashed. Holding down the power button didn't work when this glitch is happening.
https://youtu.be/4n5vzXlUPqM
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Click to collapse
What's the icon on the lock screen, top right in the status bar? That behavior is unusual if it's not a screen defect. Are you using any apps that monitor battery, a task killer, or maybe a security monitor app?
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
What's the icon on the lock screen, top right in the status bar? That behavior is unusual if it's not a screen defect. Are you using any apps that monitor battery, a task killer, or maybe a security monitor app?
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
The icon is a picture for my user profile on the phone.
I don't use anything like that. I had Clean Master installed briefly but it's been uninstalled for a couple of days now.

so it seems like this issue pops up whenever the camera crashes. happens occasionally when using the camera shortcut (double power tap) or in an app that uses the camera.

It's got to be software IMO. It didn't happen when you went to Google Now and your Recent Apps. I'd try uninstalling the Open Camera app first. Do you have Face Unlock active by chance? After that I'd FDR...

exninja said:
It's got to be software IMO. It didn't happen when you went to Google Now and your Recent Apps. I'd try uninstalling the Open Camera app first. Do you have Face Unlock active by chance? After that I'd FDR...
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Click to collapse
right, that's what's confusing me. i did a factory reset last week, set up the phone as a new device. haven't installed a new camera app, just the stock google camera. the issue occurred again last night when using an app called Shopkick, which accesses the camera but crashed.

KnockON (''double tap'') and Glance View not working properly - LG G4 H815

Hi everyone,
I have an LG G4 H815 model, upgraded to Marshmallow six months ago. Last month, the device started to have a boring problem with the KnockON function. Basically I can't wake up the display while the device is locked: the double tap is not working properly, it works every 6-7 times I try the double tap. Neither the Glance View is working, and when I try to do it, rarely It unlocks the screen: seems that the device in that case sees the Glance View gesture as a double tap.
I've already tried everything: hard reset, downgrade to Lollipop, another hard reset, proximity sensor test with multiple app. Everything works fine, also the double tap to lock, the touchscreen works perfectly. The only problem is the KnockON and Glance View while the G4 is locked. I don't have any kind of case and screen protector.
Any ideas about how can I solve this?

identical issue
alby961 said:
Hi everyone,
I have an LG G4 H815 model, upgraded to Marshmallow six months ago. Last month, the device started to have a boring problem with the KnockON function. Basically I can't wake up the display while the device is locked: the double tap is not working properly, it works every 6-7 times I try the double tap. Neither the Glance View is working, and when I try to do it, rarely It unlocks the screen: seems that the device in that case sees the Glance View gesture as a double tap.
I've already tried everything: hard reset, downgrade to Lollipop, another hard reset, proximity sensor test with multiple app. Everything works fine, also the double tap to lock, the touchscreen works perfectly. The only problem is the KnockON and Glance View while the G4 is locked. I don't have any kind of case and screen protector.
Any ideas about how can I solve this?
Click to expand...
Click to collapse
i have the same issue,some solve ?

Well another victim suffering from the same problem here. Really getting sick of this device man.

I've tried with the Always On app from the Play Store, which allows to double tap to unlock. And it works perfectly with this application. Now I'm sure that we're talking about a software problem

alby961 said:
I've tried with the Always On app from the Play Store, which allows to double tap to unlock. And it works perfectly with this application. Now I'm sure that we're talking about a software problem
Click to expand...
Click to collapse
That is the feature of the application if you look carefully at the details on its google play page. When you use the app, your display will always be on. It is not related to the original double tap to wake already which is supposed to work when the screen is off. So I would assume it's still a hardware problem. Goshhh why are there so many hardware problems with LG?

Diatomix98 said:
That is the feature of the application if you look carefully at the details on its google play page. When you use the app, your display will always be on. It is not related to the original double tap to wake already which is supposed to work when the screen is off. So I would assume it's still a hardware problem. Goshhh why are there so many hardware problems with LG?
Click to expand...
Click to collapse
You're right...Didn't assume that problem.

Hardware issue
I may be wrong, but I feel that this may be a screen/connector issue. I have two G4s, one has the KnockON issue described in this thread, and the other one doesn't have the issue. I recently had to put the mainboard of the G4 with functioning KnockON into the chassis of the G4 with the malfunctioning KnockON. When I did the switch, KnockON was problematic even though it it worked perfectly when in the other chassis. I switched the boards again to make sure I didn't break something, and sure enough, KnockON was working as it should when the mainboard was put back into it's original chassis. KnockON even worked with the mainboard from the problematic phone, when it was put into the other chassis which didn't have KnockON problems.
This leads me to thinking that there's a problem with either the screen or the mainboard connector. I could be wrong though...

alexkalicharan said:
I may be wrong, but I feel that this may be a screen/connector issue. I have two G4s, one has the KnockON issue described in this thread, and the other one doesn't have the issue. I recently had to put the mainboard of the G4 with functioning KnockON into the chassis of the G4 with the malfunctioning KnockON. When I did the switch, KnockON was problematic even though it it worked perfectly when in the other chassis. I switched the boards again to make sure I didn't break something, and sure enough, KnockON was working as it should when the mainboard was put back into it's original chassis. KnockON even worked with the mainboard from the problematic phone, when it was put into the other chassis which didn't have KnockON problems.
This leads me to thinking that there's a problem with either the screen or the mainboard connector. I could be wrong though...
Click to expand...
Click to collapse
I know there is a little rubber plug in the prox sensor a lot of people forget to put in theyre new lcds. And it causes knockon not to work very good

Hello,
I had the same problem as well, it seems that I loose the setting from time to time...
I found the solution already in the forum but cannot find it again.
Here it is :
1) Install quickshortcutmaker from the playstore
2) select "normal search"
3) search for "knock on"
4) launch the setting with the "try" option
5) see if the box for knock on is ticked (if not tick)
that's it, I hope it helps

The screen protector.
Make sure its nt envolving the proximity sensor

I've already tried with the shortcut app, but it wasn't useful because KnonON was ticked. I don't have the screen protector, so I suppose that the problem is related to the screen or the proximity sensor itself. Today i'm gonna open the phone and check if there is something wrong, or maybe I'll take it back to the customer service at the shop

It doesn´t matter what you tried, I talked to an LG tech lately, it´s a hardware issue. The proximity sensor is partly defective, so all these software workarounds don´t work. Period.

Missing option
marcge 63 said:
Hello,
I had the same problem as well, it seems that I loose the setting from time to time...
I found the solution already in the forum but cannot find it again.
Here it is :
1) Install quickshortcutmaker from the playstore
2) select "normal search"
3) search for "knock on"
4) launch the setting with the "try" option
5) see if the box for knock on is ticked (if not tick)
that's it, I hope it helps
Click to expand...
Click to collapse
Since I have problems that I cannot manage to solve with the KNOCK ON function (sometimes it doesn't work while most of the time a simple slide is enough to wake up the screen, turning it on while in my pocket) I wanted to turn it off with the quickshortcutmaker app, but it seems like I simply do not have the knock on setting. If I search "knock on" it gives me no results, while typing "knock" only the knock code wizard is found. I have done a factory reset last week, but I still have the same problem.
How is it possible that I cannot find the Knock On option even though I can still turn on the phone with the double tap? Anyone had the same issue?

I have the opposite problem. Mine is too sensitive; when I tap once and then again a few minutes later, this is registered as double tap! This means that the screen turns on itself in my pocket all the time. If I blow on it, it can turn on!
I'm not using a screen protector and the screen is clean. I think this started after I left the phone in the sun for a long time while hiking. The proximity sensor, light sensor and touch are fine.
I have not found a fix so just disabled KnockOn as @marcge 63 suggested.
---------- Post added at 09:13 PM ---------- Previous post was at 09:12 PM ----------
Lando90 said:
Since I have problems that I cannot manage to solve with the KNOCK ON function (sometimes it doesn't work while most of the time a simple slide is enough to wake up the screen, turning it on while in my pocket) I wanted to turn it off with the quickshortcutmaker app, but it seems like I simply do not have the knock on setting. If I search "knock on" it gives me no results, while typing "knock" only the knock code wizard is found. I have done a factory reset last week, but I still have the same problem.
How is it possible that I cannot find the Knock On option even though I can still turn on the phone with the double tap? Anyone had the same issue?
Click to expand...
Click to collapse
Search for 'Settings' and then under settings is KnockOn

Hi im having this problem too LG G4 F500L on stock nougat suddenly this double tap to wake and glance view bug appeared i tried everything i think this is hardware problem

same here double tap to turn off works everytime but to wake up phone it doesnt sometimes it does.. so maybe hardware or while deepsleep something kernel related.?

Same here. Then i disable knockon function.
LG-H815 cihazımdan Tapatalk kullanılarak gönderildi

Same problem h815
Phone calls(whatsapp call) working perfectly.And screen turning off Itself,proximity sensor working but double tab unlock Or knockCode not working properly.this is lcd screen problem or Kernel Problem? Now im using imperium rom.sometimes screen opening itself And i try 1-2-3-~ tap and opening 5 -10 second later.this is a NEW PROBLEM

Wow so many in here with this bug i hate this double tap to wake not working im trying to downgrade to lollipop to see if the problem will go away but too bad nougat have an anti rollback i guess i will use my power button now lol

So i came back to where i bought this phone they say my sensor are malfunctioning and need to be replaced so i guess its really a hardware problem