Background flickers and UI redraws #92884

New Issue

Daniel Calderón · 2021-11-06T17:39:45+01:00

Daniel Calderón commented

2021-11-06 17:39:45 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1650/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.55

Blender Version
Broken: version: 3.0.0 Beta, branch: master, commit date: 2021-10-27 22:07, hash: b838eaf2b9
Worked: Probably broken since pre-2.8 era

Short description of error
Background flickers, specially noticeable with gradient backgrounds
When moving around and moving the cursor the background changes very slightly,

Exact steps for others to reproduce the error
Problem seems related to nvidia card
https://twitter.com/XdanielArt/status/1457016311012380678

But might also explain or be related with the UI flicker with the m1 chip
https://twitter.com/YanSculpts/status/1457012189257207811

A workaround (at least for the background flicker) is using full screen mode (Window > Full Screen)

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1650/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.55 **Blender Version** Broken: version: 3.0.0 Beta, branch: master, commit date: 2021-10-27 22:07, hash: `b838eaf2b9` Worked: Probably broken since pre-2.8 era **Short description of error** Background flickers, specially noticeable with gradient backgrounds When moving around and moving the cursor the background changes very slightly, **Exact steps for others to reproduce the error** Problem seems related to nvidia card https://twitter.com/XdanielArt/status/1457016311012380678 But might also explain or be related with the UI flicker with the m1 chip https://twitter.com/YanSculpts/status/1457012189257207811 A workaround (at least for the background flicker) is using full screen mode (Window > Full Screen)

Daniel Calderón commented

2021-11-06 17:39:45 +01:00

Added subscriber: @xdanic

blender-admin commented

2021-11-06 17:39:45 +01:00

#93694 was marked as duplicate of this issue

Alaska commented

2021-11-07 02:13:19 +01:00

Added subscriber: @Alaska

Alaska commented

2021-11-07 02:13:19 +01:00

In your tweet you say

Oddly enough, the screen recorder doesn't capture it, so here's the recorded directly with my phone

This suggests a display issue, not an issue with Blender. A possible cause for this is Freesync or G-Sync. When you move the viewport in Blender the frame rate can change a lot. If you have a low quality Freesync or G-Sync display with the setting enabled, this fluctuating frame rate can appear as a noticeable flicker. However with higher quality displays with Freesync or G-Sync enabled, the flicker becomes more subtle to a point where it may not be noticeable.

I'm not sure if you're using one of these displays, but if you are try turning off Freesync or G-Sync and see if that does anything.

Notes:

The issue reported by YanSculpts is probably very different to your issue and should be reported as separate bugs.
I could not notice any flicker in the video you posted that definitively looked like the display flickering. There was some "flickering" in the video, but it came from the pixel grid of the display causing aliasing/Moiré that was not temporally consistent on the video.

In your tweet you say > Oddly enough, the screen recorder doesn't capture it, so here's the recorded directly with my phone This suggests a display issue, not an issue with Blender. A possible cause for this is Freesync or G-Sync. When you move the viewport in Blender the frame rate can change a lot. If you have a low quality Freesync or G-Sync display with the setting enabled, this fluctuating frame rate can appear as a noticeable flicker. However with higher quality displays with Freesync or G-Sync enabled, the flicker becomes more subtle to a point where it may not be noticeable. I'm not sure if you're using one of these displays, but if you are try turning off Freesync or G-Sync and see if that does anything. Notes: 1. The issue reported by YanSculpts is probably very different to your issue and should be reported as separate bugs. 2. I could not notice any flicker in the video you posted that definitively looked like the display flickering. There was some "flickering" in the video, but it came from the pixel grid of the display causing aliasing/Moiré that was not temporally consistent on the video.

Daniel Calderón commented

2021-11-08 21:32:34 +01:00

I use the laptop screen so there's nothing to configure, There's no freesync or gsync setting in the nVidia graphics panel either.
I can set it to use the integrated graphics in the windows settings and the flicker is not there anymore.

Here's another recording, hopefully a bit more clear this time, notice how the banding "contracts/expands".

flicker.mp4

I use the laptop screen so there's nothing to configure, There's no freesync or gsync setting in the nVidia graphics panel either. I can set it to use the integrated graphics in the windows settings and the flicker is not there anymore. Here's another recording, hopefully a bit more clear this time, notice how the banding "contracts/expands". [flicker.mp4](https://archive.blender.org/developer/F11770226/flicker.mp4)

Alaska commented

2021-11-08 23:22:18 +01:00

I can see it better in the new video, however I can not reproduce this issue on my system with my monitor. So I believe someone else should triage this report and see if they can reproduce it. See if it's a software issue or a hardware anomaly.

System Information
Operating system: Linux-5.14.0-4-amd64-x86_64-with-glibc2.32 64 Bits
Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.44

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-11-06 18:29, hash: eddf5ad581

I can see it better in the new video, however I can not reproduce this issue on my system with my monitor. So I believe someone else should triage this report and see if they can reproduce it. See if it's a software issue or a hardware anomaly. **System Information** Operating system: Linux-5.14.0-4-amd64-x86_64-with-glibc2.32 64 Bits Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.44 **Blender Version** Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-11-06 18:29, hash: `eddf5ad581`

melissa de looze commented

2021-12-05 13:32:55 +01:00

Added subscriber: @melissa.delooze

melissa de looze commented

2021-12-05 13:32:55 +01:00

In #92884#1249848, @Alaska wrote:
In your tweet you say

Oddly enough, the screen recorder doesn't capture it, so here's the recorded directly with my phone

This suggests a display issue, not an issue with Blender. A possible cause for this is Freesync or G-Sync. When you move the viewport in Blender the frame rate can change a lot. If you have a low quality Freesync or G-Sync display with the setting enabled, this fluctuating frame rate can appear as a noticeable flicker. However with higher quality displays with Freesync or G-Sync enabled, the flicker becomes more subtle to a point where it may not be noticeable.

I'm not sure if you're using one of these displays, but if you are try turning off Freesync or G-Sync and see if that does anything.

Notes:

The issue reported by YanSculpts is probably very different to your issue and should be reported as separate bugs.

I could not notice any flicker in the video you posted that definitively looked like the display flickering. There was some "flickering" in the video, but it came from the pixel grid of the display causing aliasing/Moiré that was not temporally consistent on the video.

so i am having the same issue. but it is only in blender 3.0. in earlier blender versions i do not have this

> In #92884#1249848, @Alaska wrote: > In your tweet you say > >> Oddly enough, the screen recorder doesn't capture it, so here's the recorded directly with my phone > > This suggests a display issue, not an issue with Blender. A possible cause for this is Freesync or G-Sync. When you move the viewport in Blender the frame rate can change a lot. If you have a low quality Freesync or G-Sync display with the setting enabled, this fluctuating frame rate can appear as a noticeable flicker. However with higher quality displays with Freesync or G-Sync enabled, the flicker becomes more subtle to a point where it may not be noticeable. > > I'm not sure if you're using one of these displays, but if you are try turning off Freesync or G-Sync and see if that does anything. > > Notes: > 1. The issue reported by YanSculpts is probably very different to your issue and should be reported as separate bugs. > 2. I could not notice any flicker in the video you posted that definitively looked like the display flickering. There was some "flickering" in the video, but it came from the pixel grid of the display causing aliasing/Moiré that was not temporally consistent on the video. so i am having the same issue. but it is only in blender 3.0. in earlier blender versions i do not have this

Pratik Borhade commented

2021-12-05 13:34:46 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-12-06 06:35:32 +01:00

Hi, could you please try the following:

{nav Edit > Preferences > Themes > 3D Viewport > Theme Space (way at the bottom) > Gradient Colors > Background Type > set to Single Color}

Jesse suggested this in #93696.

Hi, could you please try the following: {nav Edit > Preferences > Themes > 3D Viewport > Theme Space (way at the bottom) > Gradient Colors > Background Type > set to Single Color} Jesse suggested this in #93696.

Pratik Borhade commented

2021-12-06 06:35:42 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

melissa de looze commented

2021-12-06 08:29:39 +01:00

In #92884#1265891, @PratikPB2123 wrote:
Hi, could you please try the following:

{nav Edit > Preferences > Themes > 3D Viewport > Theme Space (way at the bottom) > Gradient Colors > Background Type > set to Single Color}

Jesse suggested this in #93696.

yes i saw the topic yesterday and it worked to me

> In #92884#1265891, @PratikPB2123 wrote: > Hi, could you please try the following: > > {nav Edit > Preferences > Themes > 3D Viewport > Theme Space (way at the bottom) > Gradient Colors > Background Type > set to Single Color} > > Jesse suggested this in #93696. yes i saw the topic yesterday and it worked to me

Pratik Borhade commented

2021-12-23 08:13:40 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Pratik Borhade closed this issue

2021-12-23 08:13:40 +01:00

Pratik Borhade commented

2021-12-23 08:13:40 +01:00

yes i saw the topic yesterday and it worked to me

Thanks for checking. Good to know that fixed your problem.

No activity for more than a week (from ticket author). As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

> yes i saw the topic yesterday and it worked to me Thanks for checking. Good to know that fixed your problem. No activity for more than a week (from ticket author). As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

Daniel Calderón referenced this issue

2024-01-25 15:39:40 +01:00

Regression: Passepartout Flickers when using Solid Viewport Shading and Background > Viewport #104128

Daniel Calderón commented

2024-01-25 15:43:08 +01:00

Damm, issue is not gone, but has been there for years and getting reported again and again, and changing to single color does not solve the issue here's a more recent report btw #104128

Daniel Calderón reopened this issue

2024-01-25 15:43:11 +01:00

Blender Bot added

and removed

labels 2024-01-25 15:43:14 +01:00

Pratik Borhade commented

2024-02-02 10:34:59 +01:00

Hi, this can be closed if #104128 is identical. Changing background color from viewport shading tab fixed the problem for you?