S7 wake up random screen flicker bug - Samsung Galaxy S7 Questions and Answers

Hi, does anyone have random screen flicker (white flash) in miliseconds when pressing home button and waking up the screen? For me its randomly appearing when I wake up the phone from sleep just before lockscreen fades in.

Yes, I have it on stock kernel, but did not notice it on Superkernel V1.1. Probably it'll be patched in the future.

davebugyi said:
Yes, I have it on stock kernel, but did not notice it on Superkernel V1.1. Probably it'll be patched in the future.
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I hope so, its really annoying...

I only have blue flashes instead of white. Have seen it in GS3 too. Think it's normal. Isn't it?

alisaGrg said:
I only have blue flashes instead of white. Have seen it in GS3 too. Think it's normal. Isn't it?
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I dont think its normal, I had S4 and all ok... On which Firmware version are you? Im currently on APB9 thinking of switching to APC8, maybe there isnt that bug since few people reporting the same bug...

fulcrum99 said:
I dont think its normal, I had S4 and all ok... On which Firmware version are you? Im currently on APB9 thinking of switching to APC8, maybe there isnt that bug since few people reporting the same bug...
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It occurs very rarely and was experiencing this from S3 to S6 and now in S7. It should be normal.

alisaGrg said:
It occurs very rarely and was experiencing this from S3 to S6 and now in S7. It should be normal.
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Click to collapse
Installed the new APEQ firmware, bug still present but rarely...

I too have the exact same issue. Yesterday I took it to service center & this guys just reflased the rom (Factory setting) & said there is no issue with the unit everything is working fine.
Today i saw the flicker again & recorded a short clip to show them but theg refused to accept it & said its normal.
I don't know what to do shud I live with it?

I just got that too. Its normal they say? Thats bs.

I had the same problem several times all of the occured while the lhone was charging

Any idea how to fix this? It is related to a hardware problem?

No ideeas ???

It is not a hardware problem, most probably a software issue. I see it when I unlock my device just after I lock it. Most probably animation can't keep up with the screen etc. I don't care.
Edit: when you have aod on you don't encounter with the same problem.

So its not a flickering screen hardware problem(more often in cold wather) like S5 has (with this problem becoming a green flickering)??

Has anobody been able to find a solution to this problem?

It's not happening on nougat anymore.

I think i have read somewhere that L Speed is causing this. If you have it, try to uninstall and see if there is any change.

Related

[Q] Razr HD XT926 4.1.2 rooted screen refreshing issue

Hi,
I live in Europe, and I use a XT926 with the latest verizon ROM (9.16.6) and the phone is rooted.
Last day I realized an issue. The phone refreshing the screen constantly (it takes 1sec only, and first I see a white screen, and after refreshing). It makes more when the phone is shaking (for example on a train). This makes me crazy. I started to go into topic, i cleared the cache of circles and homescreen but it makes now too.
Please help me solve this issue.
Thank you very much
tomiee said:
It makes more when the phone is shaking (for example on a train).
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I can't understand your description of what exactly the problem is, but if it definitely happens more when the phone is shaking (are you sure about that?) it sounds like a hardware issue to me. If the screen is going white, maybe a problem with the digitizer connection? If it is a hardware problem and your warranty is still valid, you can probably have it fixed.
triplexdoubledadevelopers said:
I can't understand your description of what exactly the problem is, but if it definitely happens more when the phone is shaking (are you sure about that?) it sounds like a hardware issue to me. If the screen is going white, maybe a problem with the digitizer connection? If it is a hardware problem and your warranty is still valid, you can probably have it fixed.
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Click to collapse
No, like I said sometimes, the screen reloading, and this is only 0.5sec, but during this phase, I see white background only. It must be some 4.1.2 issue, I think.

[Q] [HELP] Phone suddenly freeze and show weird screen

Hi, I have been looking all over the internet and search the xda thread but I couldn't find anything related to my problem.
So this morning when I wake up, I turned on my phone and after I used it for awhile suddenly my phone stopped working (freeze/hang) and started to reboot itself. After it reboots my phone's screen as per attached below.
The problem lasted for a day and started to driving me nuts!
Anyone experienced same problem?
I am running KK4.4.2 fyki.
Thank you very much for your kind help!
are you unlocked, rooted, custom recovery, rom, kernel, anything? can you access the bootloader?
xBeerdroiDx said:
are you unlocked, rooted, custom recovery, rom, kernel, anything? can you access the bootloader?
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Click to collapse
Nope, I am all stock without any modification nor and fancy stuffs.
Just pure android 4.4.2
I am thinking that the hardware might be faulty..
hellyeahdykk said:
Nope, I am all stock without any modification nor and fancy stuffs.
Just pure android 4.4.2
I am thinking that the hardware might be faulty..
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Click to collapse
If you're stock, it could be hardware. Though have you ever attempted to root?
Is it just randomly happening?
Definitely hardware
teh roxxorz said:
If you're stock, it could be hardware. Though have you ever attempted to root?
Is it just randomly happening?
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Click to collapse
Yes, it just randomly happening. It started yesterday morning until now..
The phone started to not responding at all and then my screen goes broken (same screen as broken TV I might say).
If I let it cool for 15-20 minutes the phone is usable, but then after 1 hour of normal usage the phone started to freeze again.
Just curious, none of you experienced the same?
this kinda looks like the static i was getting on screen on my n7 2012 when i let the battery get too low. charging it up and a few reboots fixed it. but im not sure if that's what is going on with yours
hellyeahdykk said:
Yes, it just randomly happening. It started yesterday morning until now..
The phone started to not responding at all and then my screen goes broken (same screen as broken TV I might say).
If I let it cool for 15-20 minutes the phone is usable, but then after 1 hour of normal usage the phone started to freeze again.
Just curious, none of you experienced the same?
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Click to collapse
I just got mine, 32gb from the playstore, a few days ago, and nothing like that.
If it's happening when your device is hot | overheating, you may wana see if you get it replaced.
It happened to me once. The phone was with his screen off and when I try to turn it on that exact same screen came. But it just happened once, also I experienced random poweroffs and reboots. I did a factory reset and power off issues and freeze stops, but had one reboot once I start installing my apps. I think its a software issue but I'm not sure.
Sent from my Nexus 5 using Tapatalk
I'm glad (and kinda of sad) to know that I'm not the only one with this issue.
The problem started about two weeks after I bought mine(Telus). It's done this about 5 or 6 times,randomly.
I found that having someone call me will "unfreeze" the device and the screen gets back to normal.
The first couple times it happened, I was running stock 4.4.2. I since rooted it and installed Xpposed/GravityBox and I'm still getting the problem...
I think that I'll have to return it...
Idk if i need RMA the phone. Its a great phone and the reboot issues has stopped. What should i do?
Sent from my Nexus 5 using Tapatalk
Edited: Nevermind my phone have defective gpu. i will RMA it
Same problem
jakov.90 said:
Idk if i need RMA the phone. Its a great phone and the reboot issues has stopped. What should i do?
Sent from my Nexus 5 using Tapatalk
Edited: Nevermind my phone have defective gpu. i will RMA it
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Hi, I have the exact same problem, I posted a video on youtube /watch?v=m0EkC_ak01g but I got to the same conclusion that it might be a GPU issue. So there is nothing I can do right?, the worst thing is Im in Argentina and LG dont take my warranty because I bought it in Germany. So there is absolutely nothing I can do?, I know how to avoid the flickering a little bit, when I hit "Ok Google" button it seems responsive and as long as I touch the screen it works (you can see it in the video) but as soon as I stop touching it, after 2-3 seconds it becomes unresponsive again, and when I say unresponsive Im saying the screen doesnt reflect what Im doing, I can still push the buttons and all. So Im not 100% sure its a GPU issue, but a software too. Thanks.

Different touchscreen bug

Hi,
My OPO is having some strange behaviors when it comes to the touchscreen. Not only I'm having the ghost touches (still no fix out, right?), but I'm also having a strange bug that makes the center portion of the screen unusable all the freaking time.
I made a video (sorry for the bad quality, the glitch about 25 seconds in and the general noobness ) showing the bug in action (sometimes it happens on the lock screen, which is infuriating cause I have to way of unlocking and have to wait until good guy OPO gets his **** together).
Anyway, is there anyone with a similar problem? any fix on the mind of an illuminated soul? or to the warranty (or lack of it) with it?
Thanks.
mromariz said:
Hi,
My OPO is having some strange behaviors when it comes to the touchscreen. Not only I'm having the ghost touches (still no fix out, right?), but I'm also having a strange bug that makes the center portion of the screen unusable all the freaking time.
I made a video (sorry for the bad quality, the glitch about 25 seconds in and the general noobness ) showing the bug in action (sometimes it happens on the lock screen, which is infuriating cause I have to way of unlocking and have to wait until good guy OPO gets his **** together).
Anyway, is there anyone with a similar problem? any fix on the mind of an illuminated soul? or to the warranty (or lack of it) with it?
Thanks.
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Click to collapse
i am with the same problem..the scrren freezes randomly for a few minutes and then working fine..i don't understand how is possibile..every boot from two days
iker_92 said:
i am with the same problem..the scrren freezes randomly for a few minutes and then working fine..i don't understand how is possibile..every boot from two days
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I just want to understand if there's or will be any software fix for this problem, or if I just have to give up and start thinking about warranty.(happened again has I write this message ).
i hope is software related..i wait the next ota with hope for the fix..otherwise i will send it in assistance..
iker_92 said:
i hope is software related..i wait the next ota with hope for the fix..otherwise i will send it in assistance..
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I have it too...When i wake up my phone sometimes i have to wait a few sec before the screen becomes responsive...It must be something related to touchscreen software or drivers, theyre really bugged as now.
Yea I also have it, I had it yesterday when i had to call cardstop when my wallet was stolen and my screen wasn't working.
Powered off for 5 min then only the bottom of the screen was was working.
hey guys Abhisek Devkota of CM says that is a firmware related issue caused by partnbers that gave drivers to cm..they now are working hard for it and in this month should be two updates..the firts with the workaround on the ota in the next days and the second with kernel patch
iker_92 said:
hey guys Abhisek Devkota of CM says that is a firmware related issue caused by partnbers that gave drivers to cm..they now are working hard for it and in this month should be two updates..the firts with the workaround on the ota in the next days and the second with kernel patch
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Click to collapse
I hope so, its happening almost every time I unlock/try to unlock the phone now. its really annoying, specially during calls, yesterday I called a friend and he didn't pick up so the call went to the voicemail, since I didn't want to leave any message I tried to end the call, but because of this bug I had to put the phone to sleep and wake it up to end the call making me pay for a dam voicemail.
Any news on a fix for this ?
I am having this issue as well but it just started today and I have had the phone for about 3 weeks. After a few minutes of use my touch screen except for the navigation buttons and the status bar become unresponsive and I have to power cycle my device to get the screen working again.
It happened to me today as well. I sure it will be fixed but still glad I have my Nexus 5 till then.
I have found a temporary fix (at least for me). After trying out many different kernels I ended up with the XNPH22R Kernel (http://forum.xda-developers.com/showthread.php?t=2780725). After a reboot the screen frooze but then recoverey without reboot. Now I had no freeze for around 30 hours without reboot. Still running the XNPH25R CM11s Rom.
Phone is rooted and unlocked.
There are also speculations that the freezes could be temperature related or at least partially.
keileruno said:
I have found a temporary fix (at least for me). After trying out many different kernels I ended up with the XNPH22R Kernel (http://forum.xda-developers.com/showthread.php?t=2780725). After a reboot the screen frooze but then recoverey without reboot. Now I had no freeze for around 30 hours without reboot. Still running the XNPH25R CM11s Rom.
Phone is rooted and unlocked.
There are also speculations that the freezes could be temperature related or at least partially.
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Click to collapse
Yeh I also get that feeling (about the temperature) . I'm gonna try that kernel once I get home thanks.
http://forum.xda-developers.com/one...-30o-ota-slowly-rolling-t2844689/post54755925
It's a known issue.. Vote it on jira! https://jira.cyanogenmod.org/plugins/servlet/mobile#issue/BACON-145

Screen non-responsive when using Smart Display - Hardware or Software Issue?

Hi
Just got my U12+ today. I've noticed that quite often if I unlock the phone by fingerprint, it shows the home screen but the screen is totally unresponsive. I can't click/touch anything.
It remains unresponsive, even if the screen times out (1min later) and then I reunlock.
The only way to fix it is to use the power button to switch off the screen and then it will work immediately afterwards when I unlock.
I have done multiple restarts, and 1 hard reset and it is still happening.
Any thoughts on what is causing/how to fix?
UPDATE:
I've spent quite a few hours googling and testing different setting options, and the issue seems to only occur when "Smart Display" is turned on.
If the Smart Display is on (either motion or always on) gets engaged, if I then unlock via Fingerprint, it shows the home screen, but the touch screen is totally unresponsive. It doesn't register any taps/touches (I turned on Dev options).
Is this a hardware or software issue? Anyone else experience this?
Thanks
leginag said:
Hi
Just got my U12+ today. I've noticed that quite often if I unlock the phone by fingerprint, it shows the home screen but the screen is totally unresponsive. I can't click/touch anything.
It remains unresponsive, even if the screen times out (1min later) and then I reunlock.
The only way to fix it is to use the power button to switch off the screen and then it will work immediately afterwards when I unlock.
I have done multiple restarts, and 1 hard reset and it is still happening.
Any thoughts on what is causing/how to fix?
UPDATE:
I've spent quite a few hours googling and testing different setting options, and the issue seems to only occur when "Smart Display" is turned on.
If the Smart Display is on (either motion or always on) gets engaged, if I then unlock via Fingerprint, it shows the home screen, but the touch screen is totally unresponsive. It doesn't register any taps/touches (I turned on Dev options).
Is this a hardware or software issue? Anyone else experience this?
Thanks
Click to expand...
Click to collapse
Phone model and current software build.
Are you rooted? Any root based mods, kernel, room, etc.
Hi
Thanks
U12+ running 1.21.454.3
Totally stock. Only got the phone on Saturday.
Did one hard reset and issue still there.
In usage since my last update, it is 100% related to the Smart Display. Absolutely no issues when it is turned off. When I enable Smart Display, then it starts freezing again on unlock.
Hi,
I'm having the same problem too..
I got my set on the 15/09/18, Hong Kong Set.
Mine is currently on 1.25.708.3. But prior to the update, I am already having the same problem described by leginag.
I even tried to do a factory reset but the problem still surface. It will become unresponsive after waking up after a period of screen off (not sure how many minutes).
After turning off Smart Display ( thanks leginag!) , I'm able to use it flawlessly. I was about to unlock the bootloader and flash a custom rom though..
I think this problem is quite disruptive, especially when a call comes in, or when launching the camera app through the edge sense. I can only snap using the squeeze.
Nonetheless, I hope there are other alternatives to Smart Display though..
Hi, I've been having the same issue. Thanks for looking into it hopefully it gets fixed in the next update.
شیرخدا said:
Hi, I've been having the same issue. Thanks for looking into it hopefully it gets fixed in the next update.
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Click to collapse
I hope it does get fixed. I reported it to HTC and they said they would forward it to their engineers. That was 2+ weeks ago, and nothing else heard back.
Best thing for you to do may be to submit a support ticket to HTC. If everyone who has the issues sends it in, this will flag it with their engineers that it is a wider problem.
Could you let us know your model/firmware?
leginag said:
I hope it does get fixed. I reported it to HTC and they said they would forward it to their engineers. That was 2+ weeks ago, and nothing else heard back.
Best thing for you to do may be to submit a support ticket to HTC. If everyone who has the issues sends it in, this will flag it with their engineers that it is a wider problem.
Could you let us know your model/firmware?
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Click to collapse
I have contacted HTC and am awaiting a reply. My current software version is 1.25.708.3
Thanks.
Hoping this issue is software related. So far, only people with Asia models have reported it (only 3, but at least I'm not going crazy by myself!)
ASIA HK - x2
ASIA JP - x1
Got a response from HTC, saying it is a software issue and should be fixed in next update - around mid-October.
Today, I got information about that this issue will be solve by software update.
Moreover, it is arranged on around middle of October.
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Click to collapse
leginag said:
Got a response from HTC, saying it is a software issue and should be fixed in next update - around mid-October.
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Click to collapse
Thank you for this. I just got my u12+ and thought it was faulty.
Turned off smart display.
I'm having this problem as well, Asia HK.
Curious, is anyone also having problems with TWRP? I almost always get a nonresponsive screen when fastboot booting.
Just a heads up that the 1.30 update has fixed the issue for me.
Which is a relief. Not that I was missing using Smart Display, but just feel better not having an issues with my phone
Hi there,
I am using Asia HK and have the same problem with you.
But I still didnt receive any update patch for 1.30. May I ask which area did your phone belong to?
raymondlo88 said:
Hi there,
I am using Asia HK and have the same problem with you.
But I still didnt receive any update patch for 1.30. May I ask which area did your phone belong to?
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Asia TW and Asia JP have already received the 1.30 update (I had to manually check for it though). Hopefully HK will be soon!
leginag said:
Just a heads up that the 1.30 update has fixed the issue for me.
Which is a relief. Not that I was missing using Smart Display, but just feel better not having an issues with my phone
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I've had this issue twice, once on 1.25 and once on 1.30 so I do not think it is fixed yet but it has been very rare for me. Only twice since the phone launched but it is very inconvenient when it happens. I could only fix mine with a reboot.
Removing my original reply as I don't believe it relates to this bug after all!
(A Factory Reset sorted out my device, incidentally)

Question Screen malfunction

Hey Guys n' Gals!
Question, has anybody had their primary screen malfunction?
Now when I fold my phone either open or closed, the screen sometimes goes black. After 1-2sec the screen turns on again.
Sometimes the screen also flashes in a bright yellowish or green color when it is being folded.
Anyone have these symptoms? Any fix? or is it a hardware issue?
Thats is EXACT issue i had, i sent it in repair but they could not fix it... but instead put a diffrent firmware on it or something
FattoYosh said:
Thats is EXACT issue i had, i sent it in repair but they could not fix it... but instead put a diffrent firmware on it or something
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Click to collapse
Woah what?
different firmware? they did not change the screen?
Does your screen now work again with no issues?
BWA80 said:
Hey Guys n' Gals!
Question, has anybody had their primary screen malfunction?
Now when I fold my phone either open or closed, the screen sometimes goes black. After 1-2sec the screen turns on again.
Sometimes the screen also flashes in a bright yellowish or green color when it is being folded.
Anyone have these symptoms? Any fix? or is it a hardware issue?
Click to expand...
Click to collapse
Most likely a hardware problem. Could be a lose connection or something more serious. Did you drop your phone or something before this started?
Take it to warranty asap
TheMystic said:
Most likely a hardware problem. Could be a lose connection or something more serious. Did you drop your phone or something before this start?
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Click to collapse
Nope, I have not dropped the phone. It just started all of a sudden.
BWA80 said:
Nope, I have not dropped the phone. It just started all of a sudden.
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Click to collapse
You'll have to get it checked at a good service centre. Let's hope it is a minor issue.
FattoYosh said:
Thats is EXACT issue i had, i sent it in repair but they could not fix it... but instead put a diffrent firmware on it or something
Click to expand...
Click to collapse
There is no way a firmware would resolve a hardware issue (if it was that)
BWA80 said:
Woah what?
different firmware? they did not change the screen?
Does your screen now work again with no issues?
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Click to collapse
It did fix it, lol i just reflashed it with stock firmware, no issues yet

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