[Q] Note pro 12.2 screen flickers

kidtkd73

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Apr 3, 2014
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I bought a refurbished note pro from amazon about a week ago. The screen flickers randomly for about 3 seconds onoffonoff. No real harm to anything but I would like it fixed and don't want to ship it out and wait for a new one. Any suggestions would be great thanks in advance.
 

theliner

Member
Sep 24, 2009
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Force GPU Render and Turn off Hardware overlays

Enable Developer Mode (Google it)
In Developer Options
Force GPU Rendering : Enable (Check)
Turn off Hardware overlays : Enable (Check)

Try it, it has worked for some folks.
 
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ehoton

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Aug 14, 2014
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What is the reason of screen flickering?

I have exactly the same problem. But can someone please explain the reason of this?
Is it hardware related or is it just a firmware bug that can be permanently fixed?
In my case, this problem disappears after restart and then I can have 10-24 hours of normal operation before this problem comes back again. I personally find this very strange...
 

regenboog

Member
Jun 27, 2010
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Flickering also

Mine also is flickering. This happens in highend games and when the battery is lower dan 51 % and the screen brightness is full. When I adjust screen brightness to 50 % or less the flickering stops. I guess it is a battery problem combined with software problem.

I already did fresh install and changed setting in developer setting.

Does someone has an solution?
 
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marko68

Senior Member
Mar 16, 2007
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Edinburgh
I have the same issue that happens with the battery lower than 45%....... I hope someone can solve this .....:eek:

---------- Post added at 01:17 PM ---------- Previous post was at 01:12 PM ----------

Enable Developer Mode (Google it)
In Developer Options
Force GPU Rendering : Enable (Check)
Turn off Hardware overlays : Enable (Check)

Try it, it has worked for some folks.
I will try and I'll let you know. :fingers-crossed:

---------- Post added at 01:35 PM ---------- Previous post was at 01:17 PM ----------

Enable Developer Mode (Google it)
In Developer Options
Force GPU Rendering : Enable (Check)
Turn off Hardware overlays : Enable (Check)

Try it, it has worked for some folks.
No changes for me.....:crying:
 

regenboog

Member
Jun 27, 2010
40
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I have the same issue that happens with the battery lower than 45%....... I hope someone can solve this .....:eek:

---------- Post added at 01:17 PM ---------- Previous post was at 01:12 PM ----------



I will try and I'll let you know. :fingers-crossed:

---------- Post added at 01:35 PM ---------- Previous post was at 01:17 PM ----------



No changes for me.....:crying:
Tomorrow mine will go back to Samsung Supplier. Case Magnet also does not work.
 

baddison

Senior Member
Aug 11, 2006
494
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USA
I thought I was the only one with this issue. Glad to see its not just me. I am also experiencing heavy flickering on this device. I'm thinking maybe I should flash a firmware upgrade??? I am already at NC5, but isnt there a newer one available - ND* , NE*, NF* ??? Its really starting to bother me.
 

regenboog

Member
Jun 27, 2010
40
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I thought I was the only one with this issue. Glad to see its not just me. I am also experiencing heavy flickering on this device. I'm thinking maybe I should flash a firmware upgrade??? I am already at NC5, but isnt there a newer one available - ND* , NE*, NF* ??? Its really starting to bother me.

Updating did not help for me, also tried other original firmwares. I only experienced flickering under 50% battery and full resolution till 70% resolution. Also flipcovermagnet did not work. Today I returned mine for repair. I triggered Knox 1 time, Samsung will only repair the tablet one time for that.
 
Last edited:
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omeryounos

Senior Member
Dec 16, 2010
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Rotterdam
It is firmware related. It is fixed in NG2 firmware, which is released for Netherlands and Poland so far. On all older firmwares, enabling "disable hardware overlays" in developer options fixes this. But this option needs to be enabled on every reboot, as it doesn't stick.
 

ShadowLea

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Dec 3, 2010
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www.aquilasol.com
It is firmware related. It is fixed in NG2 firmware, which is released for Netherlands and Poland so far. On all older firmwares, enabling "disable hardware overlays" in developer options fixes this. But this option needs to be enabled on every reboot, as it doesn't stick.
Possibly also hardware related, as my NC3/NA7/NC3 DBT p905 LTE does not suffer from this.
 
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ehoton

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Aug 14, 2014
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This problem is so stange. After restart I can have a few days without any problem at all. I can play games, I watch videos, I try to provoke the flickering by opening different programs that use hardware overlay feature but everything works perfectly... The problem comes back suddenly, the device at that time can be hot or cold, it can be just turned on from sleep mode or be used for many hours prior the moment the problem appears again. I really cannot identify the pattern and determine what can trigger this flickering. It is so annoying. :rolleyes:
 

ShadowLea

Senior Member
Dec 3, 2010
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www.aquilasol.com
This problem is so stange. After restart I can have a few days without any problem at all. I can play games, I watch videos, I try to provoke the flickering by opening different programs that use hardware overlay feature but everything works perfectly... The problem comes back suddenly, the device at that time can be hot or cold, it can be just turned on from sleep mode or be used for many hours prior the moment the problem appears again. I really cannot identify the pattern and determine what can trigger this flickering. It is so annoying. :rolleyes:
Hm, did you check the RAM usage when it happens? Every device starts having issues when there are too many apps in the cache and the RAM is too full (from freezes to lag to reboots), and since you mention it can take days after a reboot, it might be RAM related. Did you try clearing that when it happens?
 

ehoton

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Aug 14, 2014
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Hm, did you check the RAM usage when it happens? Every device starts having issues when there are too many apps in the cache and the RAM is too full (from freezes to lag to reboots), and since you mention it can take days after a reboot, it might be RAM related. Did you try clearing that when it happens?
Today I ran different stress test apps and one app that fills RAM up to the limit when all background programs are gets killed by the internal Android "safety" feature and I did not get any flickering! But I am almost 100% confident that it will appear again in a few days. I also tried to carefully twist and bend the tablet thinking that the problem might be related to loose cable connection but still nothing.
 

shubadoo

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Sep 5, 2014
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Registered to say that I've had the same screen flickering problem with my Galaxy Tab Pro 12.2 wi-fi tablet. I have actually returned two and am hoping for better luck with the third. I've bought all three from Costco in Phoenix, Arizona. With the first, I used the tablet for almost two months before the screen started flickering and I got random shutoffs/reboots. With the second, I got these same symptoms within two days. The flickering continued after a system restore, so I don't think it's a software problem.

Elsewhere on the internet, people have reported flickering while watching video and fixed it by turning off software rendering in developer options. That, however, seems to be a separate problem. I experienced the flickering during all activities, and changing the rendering setting didn't fix it. Nor did turning off auto-brightness.

The flickering seemed to show up most often when the battery was low, making me wonder if it was a power problem. I've also noticed, though, that the tablet seems to get really hot around the top center, where the camera lens is, especially on the backside. This makes me wonder if the tablet is burning itself out, or if using a case might hasten the problem by holding in heat.

Bought this third tablet from a different location, thinking maybe there was a bad run or something. If anyone figures out the issue or gets any kind of useful response from Samsung, please post.
 
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marko68

Senior Member
Mar 16, 2007
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Edinburgh
It is firmware related. It is fixed in NG2 firmware, which is released for Netherlands and Poland so far. On all older firmwares, enabling "disable hardware overlays" in developer options fixes this. But this option needs to be enabled on every reboot, as it doesn't stick.
Looking at sammobile Poland and Netherlands are on NF2. ........so where have you found this NG2?