Strange bugs - G4 Q&A, Help & Troubleshooting

Hello,
Ive got a problem with my LG G4.
Sometimes my screen gets black, little short time. In that moment statusbar and navbar are hiding. Its really short
My keyboard closes itself
If I start camera, that blackscreen happens. Camera restarts. Than works normal
LG Health force closes.
Does someone else also have that problem?
I checked already running apps, there is nothing strange
Regards Yener

I think I have this too, if I understand you. I don't know if it's hardware or software issue. It's not always present.
Inviato dal mio Nexus 7 utilizzando Tapatalk

I may have had the screen blanking once or twice.. not with the camera, just random.

Related

[Q] Does anyone else experience unlock screen lag on 4.04?

I updated my GN to 4.04 a few days ago(stock rom), but after the update I frequently experience lag when I swipe to unlock the phone. This issue does not happen every time, but definitely happen very often to me. Kind of annoying.
I tried to reset the phone, change the wallpaper from Live to static, also reflash it as well. But the issue exists anyway.
Is this a typical problem?
It happens to me also on stock 4.04.
I notice a little lag when using the pin lock screen as well, but not all the time.
Sent from my Galaxy Nexus using XDA
tetraq said:
I notice a little lag when using the pin lock screen as well, but not all the time.
Sent from my Galaxy Nexus using XDA
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Me too, I find that if i turn off 3g, the lag would be less. But I am not sure.
Try disabling auto brightness?
I notice it too. I think it has something to do with the screen gradually working it way up to full brightness now instead of just coming on at full brightness like it used to in 4.0.2.
I have the lag as well. I tried wiping everything but it's still there. Very annoying.
Lag for me too using the pattern unlock. I can finish drawing my pattern before the green lines even start connecting the dots. It still unlocks, but it's not smooth like it used to be.
No lag with normal unlock. With pattern I noticed a small lag (not picking up the first "circle" I hit) but it wasn't always there.
martonikaj said:
No lag with normal unlock. With pattern I noticed a small lag (not picking up the first "circle" I hit) but it wasn't always there.
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Click to collapse
I find that this issue happens if I change the light circumstance from dark to light, but if I am in the room and the light circumstance is constant, this issue will not happen.
inlogan said:
Lag for me too using the pattern unlock. I can finish drawing my pattern before the green lines even start connecting the dots. It still unlocks, but it's not smooth like it used to be.
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Click to collapse
same here, but hasn't really bothered me that much.
Lag here too
Sent from my Galaxy Nexus using xda premium
I also have experienced the lag. As some of you say it looks like it happens when the auto brightness kicks in during the unlock gesture.
I've opened an issue on the android forum if you want to star it and give it more evidence.
http://code.google.com/p/android/issues/detail?id=28291
Inviato dal mio Galaxy Nexus usando Tapatalk
windmill_81 said:
I also have experienced the lag. As some of you say it looks like it happens when the auto brightness kicks in during the unlock gesture.
I've opened an issue on the android forum if you want to star it and give it more evidence.
Inviato dal mio Galaxy Nexus usando Tapatalk
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Click to collapse
I have left my message there, this issue really bothers me.
No lag here. Not on 4.0.4, not on any version before. But then again, I don't use auto brightness since it's just too dark for my liking. Also the screen doesn't 'dim' when switching on when you set the brightness manually.
It's a bug for shure just saying if you want a workaround...
Lag
Experiencing allot of lag at unlock screen.
windmill_81 said:
I also have experienced the lag. As some of you say it looks like it happens when the auto brightness kicks in during the unlock gesture.
I've opened an issue on the android forum if you want to star it and give it more evidence.
http://code.google.com/p/android/issues/detail?id=28291
Inviato dal mio Galaxy Nexus usando Tapatalk
Click to expand...
Click to collapse
Go complain to Google in the link above
Infantry said:
Experiencing allot of lag at unlock screen.
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Sent from my Galaxy Nexus using xda premium
Lag is due to auto brightness. Turn that off and lag should be gone.
For those of us having issues with lockscreen lag:
From what I can tell, it has to do with "smart flex" that is in the newer kernals. Between that and the custom governors included in most roms, it is causing 4.0.4 to lag until the processor ramps up.
I was seeing lag in stock cyanogen kernel, franco's latest nightly, and the latest nightly lean kernel
The fix:
I disabled smarflex all together, and I have seen zero stutter since. (I am currently using franco, and his app allows you to do this pretty easily from one of the options)
Its too early to tell because it has only been a few hours, but I haven't noticed a hit on the battery.
Hope this helps...
Cheers
I have the same problem as well. How does one disable the smartflex?

Snapchat

Shot in the dark I guess but since I got this device, Snapchat has been terribly laggy and almost unusable. Specifically when using the keyboard for text. Sometimes when I launch it, the camera is just black for roughly 5 seconds and then the back camera comes on finally. The chat feature is very slow at times and the entire app seems to stall and crash at least once a day. Anyone else notice this?
A quick google search yielded several recent topics on various forums complaining about the same thing, all on 6.0 Marshmallow. Hopefully it's not just this device.
I'm getting this exact thing
I went through that too. Once I had to restart it to make the camera work again. My tip is do not try use volume keys until it load completely. It just frozen the app in a black screen. Isn't perfect but can be used.
It's probably not optimized as well for 6.0 yet
Snapchat hasn't been perfect for me, but I've never experienced any of those issues. The worst I get is a little delay when pressing the home button.
Sent from my Nexus 5X using Tapatalk
I have had this problem we will have to wait for an update!! Basically that's what I've been telling myself lately about marshmallow
Sent from my Nexus 5X using Tapatalk
I can tell you guys I had this problem on my Nexus 6 on Marshmallow, it has to be something related to 6.0, I'm on a LG G4 now and snapchat runs just fine.
Kinda laggy for me too. And I can't get it to play a notification sound when I recieve snaps. I have turned it on in settings and I get a notification as normal, but no sound. Does anyone else have this problem?
Just uninstalled it from the n5x will have to limit myself to using it on n72013 it was unusable. Crashes camera failed to load then started to affect the stock camera app, would cause system crashes and could only be sorted with a reboot.
Same here its completely horrible to use of this phone. Phone ****s itself every time I try use it!
Sent from my Nexus 5X using Tapatalk
The app has been perfectly fine for me, up until the update I got yesterday. Now I see exactly what everyone is talking about....it's completely unusable now.
Our of curiosity...are you guys all encrypted?
Sent from my Nexus 5X using Tapatalk
thesoldier said:
The app has been perfectly fine for me, up until the update I got yesterday. Now I see exactly what everyone is talking about....it's completely unusable now.
Our of curiosity...are you guys all encrypted?
Sent from my Nexus 5X using Tapatalk
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Click to collapse
Decrypted & rooted running Chroma with Elemental-X.
ViRb3 said:
Decrypted & rooted running Chroma with Elemental-X.
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Ok never mind then. I've been decrypted since I got the phone, until I took an OTA recently. It's been crap since then, but I guess it's unrelated
Sent from my Nexus 5X using Tapatalk
stock & encrypted and snapchat runs like poo for me. shame because its one of my most used apps :/
Well again Snapchat just updated, and now I'm back to it working fine again....
Sent from my Nexus 5X using Tapatalk
The past few updates have been good for me luckily.. Just don't try to send a snap while in landscape, I tried to add text and Swiftkey went all wonky and overlayed the screen even after I pressed Home, had to force close Snapchat and Swiftkey both :/
me too I have same issues the lag and so slowly for texting and even after update marshmallow update 6.0.1 the problem still the same I hope can anyone help me with issue what should to do and thanks you
So I am a power snapchat user and had this same problem and might have accidentally stumbled on a possible solution after having a login failure. I enabled the travel mode so it's not downloading constantly. I installed snapprefs and I can't explain why but it's flying now. No lag on window switching or opening the camera. I'm on 6.0.1 December rooted
Everytime I take video from Snapchat, it produces the sound "dug" at the first second of the video, never put my finger too hard on the phone so it isn't bcs of my finger knocking the screen, anybody know why?
Sent from my 2014811 using Tapatalk

Ghosting effect

Since when I updated to cm13 I started noticing like a ghosting effect on screen. Whenever a white thing is displayed on screen right after removing it a reddish shadow of it appears and is persistent for a while. Does anyone else noticed it? Any way of fising it?
Thanks in advance
Enviado desde mi LG-H815 mediante Tapatalk
Yes, me. Looking for a replacement from LG
I've noticed it too. Is it a hardware or software problem?
Go back to stock rom and see if you can reproduce the effect. If you can't then its probably a cm issue.

Quickmemo problem - lines without drawing anything

Hi guys,
My screen has recently changed due to ghost screen issue. Today I realized that when I take a screenshot with quickmemo, many red lines appears on the image. I have attached a saple image.
Has anybody faced such a problem like me?
Should I send the device back to technical service?
I think you have to. It's a digitizer problem.
Inviato dal mio LG-H815 utilizzando Tapatalk

Touch issue

I am not sure if it is touch issue or display issue. https://www.youtube.com/watch?v=JdMbbML9ECg Please have a look at this link.
The touch works for 2 seconds of screen on. Anyone having same issue? Please reply if anyone has fixed this issue.
same problem.
It's like the smartphone, after a 2 second make a check then blocks the touch.
I noticed that if I touch the screen before turning on the smartphone, the touch does not hang after 2 seconds but after more than 2 minutes.
I'm not sure it's a hardware problem; I still believe that it can be solved by preventing the above control.
TouchScreen Issue
Hi! I have the same problem with my Zuk Z2 plus. Did you already fix the problem? If yes could you tell me how?
Thanks!
I just start facing the same problem, any news on this?
do u all use quickcharger 3?
i am facing the same issue any update??
Tushar Bali said:
i am facing the same issue any update??
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Click to collapse
Which ROM and Kernel are you using? Should be a kernel related issue, try flashing a different ROM or Kernel.
sixth.pr1m3 said:
Which ROM and Kernel are you using? Should be a kernel related issue, try flashing a different ROM or Kernel.
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Click to collapse
already tried but not switched kernel,i am running default kernel with jaguar oreo rom
I am also facing the same issue, since i have flashed custom rom [Pixel Experience], initially i was using PixelExp-24/01/2018 i didnt faced any issue i was using for almost 20-25days & recently i have flashed PixelExp-07/02/2018, after 3days the nav bar stopped working intermediately & the touch response only once after screen unlock & not responses until or unless i lock it & unlock it, then suddenly touch starts working but where ever i touch in the screen Google-Assistance opens.
Has anyone found a solution to this problem? Did any of you go to the lenovo Service center?
nirvikkhanal said:
I am not sure if it is touch issue or display issue. https://www.youtube.com/watch?v=JdMbbML9ECg Please have a look at this link.
The touch works for 2 seconds of screen on. Anyone having same issue? Please reply if anyone has fixed this issue.
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I had the same. I used a piezoelectric of a lighter to give static shocks to the screen while touching it with the other finger. It worked.
Inviato dal mio Z2 Plus utilizzando Tapatalk
hi i get the same problem any solution for this problem
I had the same issue, and fixed it by removing the screen protector. Now the touch has been working since yesterday
vivaswan.cs said:
I am also facing the same problem on my phone.
I tried discharging the phone completely and charging again.
I use the original charger only.
I'm running Pixel Experience ROM on stock kernel. This problem started a week after unlocking and rooting my phone. I also feel that it is not a hardware issue.
The problem started with the nav. buttons: The rest of the screen functioned properly but the nav buttons were unresponsive. A little later (a few hours), the entire screen responded to touch intermittently, and after that it responded only a few seconds after unlocking the phone (the above mentioned problem).
I am having a very tough time as this is my daily driver and I'm stuck.
Please Help. Thanks a lot in advance.
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Click to collapse
This is exactly what has happened to me too. It started with the nav. buttons and then the rest of the screen. Have you found out what is to be done?
Guyz try a cell ,u know those 1.5 v cells use them as the s pen im not joking it really works u just try once
No solution whatsoever!! I just cannot believe this is a hardware problem. My screen works (most of the time) for 2mins if I wake the screen up while touching it with one of my fingers, otherwise the screen works only for 2 secs.
This problem has been discussed in very few places although there are many people who are affected. Loosing hope.
Can I exchange this phone on Filpkart/Amazon in India?
chetaah said:
No solution whatsoever!! I just cannot believe this is a hardware problem. My screen works (most of the time) for 2mins if I wake the screen up while touching it with one of my fingers, otherwise the screen works only for 2 secs.
This problem has been discussed in very few places although there are many people who are affected. Loosing hope.
Can I exchange this phone on Filpkart/Amazon in India?
Click to expand...
Click to collapse
I exchanged my z2 plus with this problem on Amazon without any problem. They only want a phone which switches on and whose display is not cracked
max.para said:
I had the same. I used a piezoelectric of a lighter to give static shocks to the screen while touching it with the other finger. It worked.
Inviato dal mio Z2 Plus utilizzando Tapatalk
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Exactly how did you did that? Could you explain?
Broke a piezoelectric lighter and got the raw mechanism.
I made it discharge several times on the affected area while touching another area of the screen with another finger
Simply4Nothing said:
Exactly how did you did that? Could you explain?
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Click to collapse
Inviato dal mio MIX 2S utilizzando Tapatalk
Workaround
I tried one workaround indicated by someone else on another thread. Follow below steps
Press power button to put screen off
Hold phone in left hand and put left thumb on screen
Press power button to start screen
Touch with right hand fingers
It will work till left thumb is there on screen..
If touch is lost follow from step one
Atleast this helps alot instead of only 2-3secs stuff..
Thanks to one who indicated this workaround
Found a solution
Hi I was also facing this problem and I was ready to give up then I tried changing custom ROMs and when I installed the dot os v2.4,the problem disappeared and I was back to using the device normally
Hope this helps

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