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Display is slightly blinking in specific conditions

Yesterday i noticed something strange in my OP7p and i'd like you to check whether something like this occurs in your phones. Issue, which i will describe occurs only when i have 90hz refresh rate set and the low brightness of the screen with the auto adjustment of brightness turned off. The easiest way to see that is on youtube application with a dark theme. When we start a movie on the full screen (horizontally) and watch it for a few seconds, then go back to the vertical position, there is something like weak but visible blink of the screen, or a minimal colours change. It can be noticed in other apps, e.g. on facebook. Seems to me this is a software problem, beacause the same phenomenon doesn't exists when we set 60hz refresh. I would be very grateful if you can check it on your phones and give me a know about it.

I don't usually start videos in full screen mode and never noticed it but yeah definitely does a white flicker.
This is the highest brightness I could get it to do the flicker at.

Thank you for an answer. Personally i am able to see this flicker on a little bit higher screen brightness, but maybe its because im sitting in a dark room now. I was worried cause sometimes i see it during the normal usage of phone, and if only my OnePlus would be affected by this flickering i could still return it or exchange for a new one. It isnt very disturbing however interesting is whats cause of it.

kamkoz96 said:
Yesterday i noticed something strange in my OP7p and i'd like you to check whether something like this occurs in your phones. Issue, which i will describe occurs only when i have 90hz refresh rate set and the low brightness of the screen with the auto adjustment of brightness turned off. The easiest way to see that is on youtube application with a dark theme. When we start a movie on the full screen (horizontally) and watch it for a few seconds, then go back to the vertical position, there is something like weak but visible blink of the screen, or a minimal colours change. It can be noticed in other apps, e.g. on facebook. Seems to me this is a software problem, beacause the same phenomenon doesn't exists when we set 60hz refresh. I would be very grateful if you can check it on your phones and give me a know about it.
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this is usual for EVERY Oled screen and is called jelly effect...

You might want to try the DC dimming option in Settings->Utilities->OnePlus Laboratory.

matze19999 said:
this is usual for EVERY Oled screen and is called jelly effect...
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From what i know jelly effect appears while we scrolling some content and propably that's not what i meant in my first post. Also flicker in my case is only visible on 90hz refresh rate.
I have galaxy s7e as a second phone and that effect doesn't happen there.
vishal3967 said:
You might want to try the DC dimming option in Settings->Utilities->OnePlus Laboratory.
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Thanks but i tried this option and it didn't do the job well.

[REQUEST] Black List for Force 90 HZ

Hello guys,
As you know we are able to force 90hz for all apps. Not always it's a good idea because of :
- battery reason
- Google maps issues
- games which are not "high end" to avoid high battery usage (games like poker and so on does not need 90hz)
I wanted to ask some developers if they can create an application which can be configured themselve (black list for all apps which should not run in 90hz for example)
Thanks so.much (this would.be a reason to root if it requires root).

Put it on auto and let it manage itself or install gravitybox and you can change refresh rate from the quick-settings tile.

trapcoder666 said:
Put it on auto and let it manage itself or install gravitybox and you can change refresh rate from the quick-settings tile.
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Really ?
If I root and use gravity box I can change it for every app?

manutoxic said:
Really ?
If I root and use gravity box I can change it for every app?
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Well, you need to swipe down your quick settings and click the refresh rate tile. So, it's not automated but at least it makes things easier.

trapcoder666 said:
Well, you need to swipe down your quick settings and click the refresh rate tile. So, it's not automated but at least it makes things easier.
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I Wish there would be an application to configure it app by apl

manutoxic said:
I Wish there would be an application to configure it app by apl
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No but JOnePlus Tool lets you just turn it on and off with a single button on the fly. Just open the app and it's on the main screen there.
https://play.google.com/store/apps/details?id=net.jroot3d.joneplustools&hl=en_US

https://forum.xda-developers.com/showpost.php?p=79813631&postcount=78

I also use the forced 90hz all apps and the battery drain from this is seriously overblown. People scream about what they know nothing about. People need to educate themselves before making claims. They just say it kills battery without even trying it. I did nothing different, changed nothing and used my phone the same way I normally do and it made a difference of an increase of .7% battery drain with the screen on compared to 90hz on auto. It went from 6.3% drain pet hour to 7.0% per hour of screen on time. And since I've gotten days with 6.1% with it on forced 90hz all apps. So the difference isn't of and significance. Just try it and if you don't like it, switch it back. You'll find it makes no real difference when using it.
So there really should not be a need to blacklist 90hz all apps for just certain apps imo

Im sure someone could setup a tasker profile for this reason.

equlizer said:
Im sure someone could setup a tasker profile for this reason.
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I did in 2 posts above that was linked, also its in the guides section.

I wish we could have possibility to decide to run some apps in 90hz and another in 60 hz.
For instance I wish KODI could run in 60hz.

netgar said:
I wish we could have possibility to decide to run some apps in 90hz and another in 60 hz.
For instance I wish KODI could run in 60hz.
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here is my guide
If you need some help setting it up let me know. This will let u choose which apps use 60Hz and others will force 90Hz

Any possibility without buying tasker?

I switch to maps, display switched to 60, I turned off maps and display still remains 60. Didn't switch to 90.
Thats the way that should work? I need to manually switch to 90?

netgar said:
I switch to maps, display switched to 60, I turned off maps and display still remains 60. Didn't switch to 90.
Thats the way that should work? I need to manually switch to 90?
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Not sure what your setup is exactly but if you're running the forced 90hz for all apps it is a bug that it shows as 60hz in the OOS setting under display. So if the tasker profile you are using switches from 90hz all apps and back to 60hz then your display setting will basically always show 60hz.
You can use this to test what your refresh rate is currently, either 60 or 90hz
https://www.testufo.com/

manutoxic said:
Any possibility without buying tasker?
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we cannot provide you that info on here... google may be ur friend on how to go about doing that.

Eric214 said:
Not sure what your setup is exactly but if you're running the forced 90hz for all apps it is a bug that it shows as 60hz in the OOS setting under display. So if the tasker profile you are using switches from 90hz all apps and back to 60hz then your display setting will basically always show 60hz.
You can use this to test what your refresh rate is currently, either 60 or 90hz
https://www.testufo.com/
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Click to collapse
I don't use forsed 90hz all apps.
Ones I shut off maps I need to manually switch display back to 90hz.

no issues with maps at 90hz here. Strange as some do.

manutoxic said:
Any possibility without buying tasker?
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Click to collapse
So you want somebody to develop an app for your needs but won't pay for it?

I just found an app called Auto90. You can select which app you want to be auto/60 or 90hz. It's wonderful!

Refresh Rate lag

Hi all, wondered if you could shed some light on this situation, I'm not sure if it's my device UK or a software issue. So when I select 120hz some apps are not silky smooth when scrolling like YouTube for example, it's not true 120hz it's as though it's on auto adjust, but it isn't, home screen and some apps are 120hz but some apps aren't is this a app issue or a phone issue? Has anyone else experienced this?

Not all applications support 120hz, Google Maps comes to mind, pretty sure that's capped at 60hz, I remember reading a article about YouTube not supporting 90hz on OnePlus devices, maybe the YouTube application is also called out at 60hz, I'd confidently say it's probably the app rather than the phone

Mat2k2020 said:
Hi all, wondered if you could shed some light on this situation, I'm not sure if it's my device UK or a software issue. So when I select 120hz some apps are not silky smooth when scrolling like YouTube for example, it's not true 120hz it's as though it's on auto adjust, but it isn't, home screen and some apps are 120hz but some apps aren't is this a app issue or a phone issue? Has anyone else experienced this?
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Its app specific, some apps have no caps some do

I have this issue too.
It seems like whenever a video is playing in whatever app, it will switch to 60Hz.
In Reddit for example, scrolling is very laggy.

If your refresh rate mode is set to auto, ColorOS decides what refresh rate to run on based on a list found at /system/etc/refresh_rate_config.xml
If you set the refresh rate mode to 120Hz, though, it should run at that refresh rate in most apps.

Jordytjes said:
I have this issue too.
It seems like whenever a video is playing in whatever app, it will switch to 60Hz.
In Reddit for example, scrolling is very laggy.
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Click to collapse
Same here, is pretty annoying because takes away all the smoothness feeling, although sometimes it doesn't happen and keeps working at 120hz, so random... Just wondering did you find anyway to avoid this to happen?

Touch lag issue when using Adaptive smooothness

I got my Note 20 Ultra back on November and encountered an annoying issue when Adaptive refresh rate is turned on and watching YouTube videos. When YouTube first starts the display will run at 120hz, but after a few seconds it will drop to 60hz. When the refresh rate drops, the first touch of the screen is interpreted as a touch and hold instead of a single press. The display will then jump back to 120hz, but the display still thinks I'm pressing and holding the screen when I've already let go. If I then touch the screen again while in 120hz the phone thinks I've done a double tap (presumable completing the first tap and then immediately registering the second tap), which causes the video to seek forward or backward, depending on where I pressed on the screen the second time. If I tap the screen the one time but allow the screen to drop back to 60hz after it jumps to 120hz from the first tap, then the first tap seems to be ignored as my second tap acts like a tap and hold again.
What's interesting is that as long as the display stays at 120hz, all taps after the scenario above work fine. A single tap will open the playback overlay (pause/play button, seek arrows, etc) like it's supposed to, but once I leave the display alone and it drops to 60hz this whole problem starts all over again. Since adaptive refresh is tied to the brightness sensor, this problem does not present itself in a dark room since the display stays at 120hz in a dark room. Also, if I turn off adaptive refresh rate and have the display stay at 60hz all the time then the problem is not present either. I also will occasionally get non responsiveness on Brave Browser but I can't say for sure if they are related.
This has frustrated me so much I did a factory reset and interestingly the issue did not re-appear at first with a fully updated YouTube. Once I updated/installed other apps (including Galaxy store apps) the problem returned. I don't have display overlay apps installed, so I suspect it's a Galaxy store app but I can't pinpoint which one. I don't believe this is a hardware issue, so I'm curious if anyone on the thread has had a similar issue. I'd like to report this to Samsung but I have no idea where to even report this.

Sounds like you've figured it's a software program. You should update one at a time and see if you can pinpoint the issue. Try to not to install 3rd party software until all you need to update gets updated and phone is working fine.
Or
I would say try using a package disabler and try disabling the apps you suspect to see if any improvements. It might not be a Samsung app as others would be facing the same issue you're having.
As always don't restore settings/app data from backup etc other than media, messages, logs.
I'm using adaptive and everything is working fine on my end. Snapdragon variant here. Albeit I keep a number of Samsung apps disabled as i don't use or need them running in background for no reason.

lennie said:
Sounds like you've figured it's a software program. You should update one at a time and see if you can pinpoint the issue. Try to not to install 3rd party software until all you need to update gets updated and phone is working fine.
Or
I would say try using a package disabler and try disabling the apps you suspect to see if any improvements. It might not be a Samsung app as others would be facing the same issue you're having.
As always don't restore settings/app data from backup etc other than media, messages, logs.
I'm using adaptive and everything is working fine on my end. Snapdragon variant here. Albeit I keep a number of Samsung apps disabled as i don't use or need them running in background for no reason.
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Can you provide a list of apps which you have disabled through adb?

have you tried diff version of youtube that can help

RISHI RAJ said:
Can you provide a list of apps which you have disabled through adb?
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I use package disabler pro bought from their website. It gives me a great on demand enable/disable option.
My use case might be a bit different from yours as I have about 160 packages disabled at a given time. I guess I can provide a list and you chose what you want from it.

I'll try uninstalling apps again to see if the problem can be resolved that way. On the latest version of Youtube it worked fine before I started installing more apps. I kind of don't want to do a full factory reset but if I have to so I can narrow that my be my only option. I'm wondering if there is another software I can run on my phone to see if any apps are interfering with the display or adaptive refresh rate?

I ended up doing a factory reset on my phone. The issue went away for the most of the day but returned again by night time. Same issue - when at 120hz and drops to 60hz the issue is present. It's not just Youtube, it's on any app, including the home screen. The first tap is always interpreted as a tap and hold, so single tapping an app icon brings up the tap and hold menu, and single tapping on the home screen brings up the home screen customization screen. Another test I did was turn off auto brightness, then turn my brightness down to the lowest setting. After that the display stayed at 120hz and the issue did not return until I either set the brightness up manually or turn auto brightness back on. I also tried in safe mode, and the issue was not present there either, but I can't tell if the device every went into 120hz or not since all 3rd party apps are disabled. At this point I have no idea what it is. The app setup was fine during the day, no new apps were installed, but the issue returned. Seems like I have no choice to but turn adaptive smoothness off and leave it at 60hz.

Just to add a little more interesting information here. I had someone else use the refresh rate monitor app on their Note 20 ultra (Tmobile variant), and their display operates differently than my Verizon variant. On the Tmo variant, when the screen drops to 60hz and the screen is tapped, the refresh rate drops to below 60 (12, 34, 48, etc) but then goes back up to 120hz after the app opens. Mine just goes immediately to 120hz and then gets that tap-and-hold behavior. So clearly the screens software or firmware is behaving differently here. I'm wondering if we have any other Verizon variant Note 20 Ultra users on this forum that could also test?

Screen dimming when in and out of apps!!

Hi, I'm new to the x2 pro coming from a op6t!!! Really like the phone, I'm having an issue were when I go from one app to another, the screen brightness varies from app to app!! Say I go into the Google app then I go into facebook app the brightness of the screen goes significancly dimmer upon entering the app!! The two apps I've noticed it happening in most is facebook app and chrome browser! When going from Google app to Google app the brightness stays the same! Any help on the issue would be much appreciated, the phone is set to adaptive refresh and resolution rate and high performance mode is not switched on, eye care or auto brightness are also not switched on, I've toggled the refresh rate settings and Res settings and it's still does the same! thanks again for any help