Problem: Screen Horizontal Lines When Dim in 120hz and low light

[saidgta]

Hi,
My Note 20 ultra has some Display problems.
When my phone is on a lower brightness and Adaptive(120Hz) refresh rate setting on a grey background, I can see all sorts of funky horizontal lines across it.
(except gallery - i think the refresh rate reduce to 60hz in gallery automatically so in gallery you can't see the problem).
I see them big time on settings screens or Apps where there is a gradient of gray.
see the attached Picture. Two pics with 120Hz(Adaptive) Display Refresh Rate and others with 60hz!
Note: the problem seems to be more than real in these pictures because of camera, with eyes you can't see such this bad!
Any one here with this problem?

 

[saidgta]

Is this something wrong with the phone? Or is that normal?

 

[omarkhamas]

60

Is this something wrong with the phone? Or is that normal?

normal for amoled screen

 

[hoss_n2]

Is this something wrong with the phone? Or is that normal?

You have a defective display get it replaced ,& no this isn't normal with oled screens

 

[blackhawk]

You can see the lines with your eyes or just with the cam?
Normal for a cam image... try decreasing shutter speed, a lot.

 

[saidgta]

You can see the lines with your eyes or just with the cam?
Normal for a cam image... try decreasing shutter speed, a lot.

I can see with eyes but very rare, just when the screen is on 120 Hz and lowest brightness. On 60Hz everything's ok!

 

[blackhawk]

I can see with eyes but very rare, just when the screen is on 120 Hz and lowest brightness. On 60Hz everything's ok!

Is that in a completely dark room?
If you're not using a incandescent light source for room lighting that may cause it.
Otherwise regardless of screen brightness or display frequency it should be not be showing anything except what's being displayed.
At that price it better be spot on.

 

[saidgta]

Yes, that's in a completely dark room.
The horizontal lines is static, not moving. And you can see just in Gray Backgrounds with lowest brightness and 120hz.

 

[Guitar Lover]

screen lines

Hi. I just got my Note 20 Ultra and I have the same problem. I see streaks in my photos. If I switch between 60 and 120Hz, sometimes the lines disappear, but not always.

 

[blackhawk]

Yes, that's in a completely dark room.
The horizontal lines is static, not moving. And you can see just in Gray Backgrounds with lowest brightness and 120hz.

Not good. Was thinking maybe background LED lighting might be "strobing" it.
Probably a firmware issue but could hardware is my guess.
Maybe software... try clearing the system cache on boot menu, a hard reboot and clearing graphic driver data even if it reads zero. If you have PD MDM use that to clear instead of in Settings.

 

[coilbio]

Mine does the same. I think they all do it some people just don't notice it.

 

[saidgta]

Mine does the same. I think they all do it some people just don't notice it.

Yes, I know someone that replaced the phone, but new phone has the issue too.

 

[blackhawk]

Mine does the same. I think they all do it some people just don't notice it.

Do you normally use that low a level at night?
I have excellent center vision; my 10+ goes dimmer than I will ever use. No flicker or color anomalies though.
It may be the physical hardware limits of the device or they may eventually patch a firmware flaw.
They also may have inadvertently set the lower limit of the brightness too low...
If it doesn't effect night usage I might ignore it.

Samsung can be notoriously slow at fixing firmware/software glitches in their products.
Amazingly even after almost 2 years they are still patching both firmware and software on the original Buds. They now perform much better then a year ago. Crazy.

 

[coilbio]

Do you normally use that low a level at night?
I have excellent center vision; my 10+ goes dimmer than I will ever use. No flicker or color anomalies though.
It may be the physical hardware limits of the device or they may eventually patch a firmware flaw.
They also may have inadvertently set the lower limit of the brightness too low...
If it doesn't effect night usage I might ignore it.

Samsung can be notoriously slow at fixing firmware/software glitches in their products.
Amazingly even after almost 2 years they are still patching both firmware and software on the original Buds. They now perform much better then a year ago. Crazy.

Frankly it's always visible since I know what to look for. when I'm not looking for the it, it's when it's really annoying to see.
I have a note 9 and a 10+ which I still daily drive both on their own sims. The difference in screens is very noticeable. The 120 hz mode is the problem. Put the phone in full resolution and it's way better.
The screen on the n20u is less vibrant than my other notes, but it's more color accurate so I like that.

 

[blackhawk]

Mine does the same. I think they all do it some people just don't notice it.

Frankly it's always visible since I know what to look for. when I'm not looking for the it, it's when it's really annoying to see.
I have a note 9 and a 10+ which I still daily drive both on their own sims. The difference in screens is very noticeable. The 120 hz mode is the problem. Put the phone in full resolution and it's way better.
The screen on the n20u is less vibrant than my other notes, but it's more color accurate so I like that.

That's seems annoying. Guess using a lower frequency at night be the easiest solution. Sammy throws out a lot of betaware that needs more work...

On the 10+ Pie the display settings are goofy for screen mode. If you set it to "vivid" it's way oversaturated. Natural is the best setting but you have little ability to dail it in much more than that.

I'm curious about these controls on the 20U and Q.
Any improvement?

 

[coilbio]

That's seems annoying. Guess using a lower frequency at night be the easiest solution. Sammy throws out a lot of betaware that needs more work...

On the 10+ Pie the display settings are goofy for screen mode. If you set it to "vivid" it's way oversaturated. Natural is the best setting but you have little ability to dail it in much more than that.

I'm curious about these controls on the 20U and Q.
Any improvement?

Honestly don't notice a difference switching between the two in n20u, on note 10+ yes big difference.

So I tried the green slider mod setting where you dial it all the way down under advanced display setting.
Its not much of a difference, it does reduce it a little. The screen becomes purple dominant obviously but the green fringes still show.

 

[blackhawk]

Mine does the same. I think they all do it some people just don't notice it.

Frankly it's always visible since I know what to look for. when I'm not looking for the it, it's when it's really annoying to see.
I have a note 9 and a 10+ which I still daily drive both on their own sims. The difference in screens is very noticeable. The 120 hz mode is the problem. Put the phone in full resolution and it's way better.
The screen on the n20u is less vibrant than my other notes, but it's more color accurate so I like that.

Honestly don't notice a difference switching between the two in n20u, on note 10+ yes big difference.

So I tried the green slider mod setting where you dial it all the way down under advanced display setting.
Its not much of a difference, it does reduce it a little. The screen becomes purple dominant obviously but the green fringes still show.

On the 10+ the color sliders are weak too.
A 3rd party overlay app works but is a pain.
Overlay apps won't work with Q though I believe.
Rather sloppy of Goggle and Samsung... this is an ongoing issue with Androids; no color calibration

Fortunately the 10+'s aren't too bad but it the color blind coders need to get up to speed...
Androids need color calibration.

 

[doggydog2]

OLEDS are horrible sceens, but similarly to screen-to-body ratio we have brightness race now, a useless but review-happy attribute which does help your eyes only in very rare situations. Otherwise it makes your eyes tired with pulsing. For use in dark these screens are bad. You will also got ugly backbleeding as a bonus. Horror movies are unwatchable.

I have this with each phone nowadays, and there's no escape from it. I can see the lines on Note20U too, of course. It even blinks when you're tired. The backbleeding is rather uniform tho and not so intensive.

Funny as I use mobile 90% in dark, i prefer dark mode, and i like dark movies Killer trio.

 

[blackhawk]

OLEDS are horrible sceens, but similarly to screen-to-body ratio we have brightness race now, a useless but review-happy attribute which does help your eyes only in very rare situations. Otherwise it makes your eyes tired with pulsing. For use in dark these screens are bad. You will also got ugly backbleeding as a bonus. Horror movies are unwatchable.

I have this with each phone nowadays, and there's no escape from it. I can see the lines on Note20U too, of course. It even blinks when you're tired. The backbleeding is rather uniform tho and not so intensive.

Funny as I use mobile 90% in dark, i prefer dark mode, and i like dark movies Killer trio.

It's not the OLEDs that are the issue as the display on my 10+ is the best display I ever used.
It's the firmware/drivers and perhaps the >60 hz hardware. It's very disconcerting that it's not sorted out yet.
Well that's Samsung. It may be fixed. Samsung just pushed out yet another Buds+ firmware update today. Wow. They keep trying, I'll give them that... the best the Buds+ ever sounded.
So there's hope. The bad news is it will most likely need to be a firmware update if it is fixable.
Flashing the Buds is a lot easier (and less risky) than patching the bloody phone firmware.

Based on issues like this and the abomination that Q and above are, I may simply buy another backup 10+ 512gb phone running on Pie and call it good for the next 3 years.
Both Samsung and Goggle/Android have been practicing drop the ball like drooling kindergarten ftards lately

 

[Dr Rebel]

Hi,
My Note 20 ultra has some Display problems.
When my phone is on a lower brightness and Adaptive(120Hz) refresh rate setting on a grey background, I can see all sorts of funky horizontal lines across it.
(except gallery - i think the refresh rate reduce to 60hz in gallery automatically so in gallery you can't see the problem).
I see them big time on settings screens or Apps where there is a gradient of gray.
see the attached Picture. Two pics with 120Hz(Adaptive) Display Refresh Rate and others with 60hz!
Note: the problem seems to be more than real in these pictures because of camera, with eyes you can't see such this bad!
Any one here with this problem?

I have same issue..! Have you sorted out this issue!?