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2020 QLED T models (Q80T, Q90T, Q800T, Q900T) HDR game mode brightness / local dimming bug

(Topic created on: 03-10-2020 09:25 PM)
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Rauttis
Explorer
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I bought a Q80T a couple of days ago and have noticed a really annoying issue when using the tv with the combination of HDR and game mode.

 

I'm fairly certain this is a software bug in the TV since I can reproduce this issue with 100% accuracy, and it happens on the dot at the same moment every time. It's basically on a timer.

 

Basically when the game is displaying a HDR signal and game mode is enabled, exactly after 6 minutes the brightness of the TV suddenly drops by around 20 (50 -> 30). The value of brightness setting doesn't actually change however. Messing with the brightness setting does not restore the brightness to it's original state, but changing the local dimming setting from standard to low and then back to standard does. Switching game mode off and then back on also fixes the issue, but then it happens again EXACTLY after 6 minutes (I've timed this with a stopwatch).

 

Has anyone else experienced this issue? Or can someone maybe test this on their TV to see if you can reproduce it?

 

Exact repro steps on how I can reproduce this 100% of the time on the PS4 Pro:

  1. Set brightness to max (50)
  2. Set local dimming to standard (bug happens on high as well)
  3. Enable game mode
  4. Turn off game motion plus
  5. Turn off intelligent mode and all the brightness related settings in eco settings, as these can influence the brightness level of the tv.
  6. Launch a game that runs in HDR
  7. Start your stopwatch
  8. Do whatever you want in the game or you can also go back to PS4 menus, find a bright scene where you can notice a brightness drop easily
  9. When the stopwatch hits 6 minutes, you should see the TVs brightness suddenly drop by a large amount. By eye the brightness drop seems about equal to dropping the brightness from 50 -> 30 by hand.
  10. Go to picture settings and set local dimming to low (brightness does not change)
  11. Set local dimming back to standard (brightness suddenly jumps to the original level. Brightness can be restored by switching input away and back as well, or by disabling and re-enabling game mode)
  12. And again after EXACTLY 6 minutes the bug again repeats and the brightness drops down again

Some other notes: The PS4 has a screensaver that basically dims the screen if it is idle for a while. This is not the cause of this, this happens even when the console is in active use and the brightness can be restored temporarily by changing the local dimming setting like described above. I have not managed to reproduce this issue with game mode off, so it seems to be related to game mode.

 

Software version: 1304

2,028 REPLIES 2,028
Suriya
Voyager
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pls check for badges to identify which is spam (created by AV2020)

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Suriya
Voyager
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myself reported the duplicate account to mods 

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Keitoki
Navigator
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Because one is Surìya (the fake from AV2020) and the second is Suriya... such a kid.

 

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Suriya
Voyager
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For security reason changed my profile picture. Don't know why that @QuantumP behave like a toxic to everyone

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jayh89
Helping Hand
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There is one AV2020 account and it’s the only one I can find. See pic. AV2020 posted a message, then deleted it, then Suriya posted very similar message because they’re the same person! 🤯

FF995ACB-0308-4991-A926-620027225CE2.png

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Jihionfly
Explorer
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Please stop this..we dont care about any of this..we just want new official firmware from samsung for free and asap cause thats how it is and should be.nothing less nothing more

Suriya
Voyager
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Yes AV2020 created fake profile same like one which i have

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jayh89
Helping Hand
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I agree but it becomes an issue when someone is trying to bribe people for updates. 

HQboy
Navigator
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 You are confusing everything. Stop posting this. The real one has BADGE NAVIGATOR. The other one who posted these things is a fake account impersonating him. Stop posting misinformation, this topic is useful for many people, I reported you too.

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Suriya
Voyager
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That is what AV2020 is doing. He has copied my firmware link to ask for donations under my name and same like email address once. now he's doing the same thing Second time.  He duplicated my account to ask for money. Pls report mods about AV2020 spams 

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