Flickering in Blender UI (Graphics driver issue) #94665

New Issue

Arun Sojan Parolikkal · 2022-01-05T19:42:58+01:00

2022-01-05 19:42:58 +01:00

System Information
Operating system: Arch Linux
Graphics card: Intel UHD Graphics 620
Driver info:

  OpenGL: renderer: Mesa Intel UHD Graphics 620 (KBL GT2)
  v: 4.6 Mesa 21.3.3

Blender Version
Broken: all tested versions (3.0 stable, 2.93, daily builds)
Worked: (none)

Short description of error
I've got an issue where the Blender GUI keeps flickering. The whole 3D viewport sometimes blacks out, and generally, movements like panning the 3D view come with a whole second of lag. This is almost definitely a GPU driver issue because I was able to run the exact same versions of Blender without the slightest graphical hitch when using PopOS off a test USB. I have also been using Blender on my Arch installation without any problems. Some random update seems to have broken things.

This is relevant to the Blender bug tracker because I have not been able to find such a glitch on any other application I use (Minecraft, GIMP, Kdenlive, etc)

Short video of the issue: Issue GIF (Issue becomes much worse when more geometry is in view)

An observation that is perhaps relevant is that the problem becomes less intense (and at a point, disappears) when I reduce the window size of the application.

Exact steps for others to reproduce the error
Simply starting up Blender using the most recent updates on Arch with the above mentioned GPU, as shown in the GIF attached above featuring the default cube, results in this problem.

Excuse me, if bug reports for problems caused by drivers isn't accepted

**System Information** Operating system: Arch Linux Graphics card: Intel UHD Graphics 620 Driver info: ``` OpenGL: renderer: Mesa Intel UHD Graphics 620 (KBL GT2) v: 4.6 Mesa 21.3.3 ``` **Blender Version** Broken: all tested versions (3.0 stable, 2.93, daily builds) Worked: (none) **Short description of error** I've got an issue where the Blender GUI keeps flickering. The whole 3D viewport sometimes blacks out, and generally, movements like panning the 3D view come with a whole second of lag. This is almost definitely a GPU driver issue because I was able to run the exact same versions of Blender without the slightest graphical hitch when using PopOS off a test USB. I have also been using Blender on my Arch installation without any problems. Some random update seems to have broken things. This is relevant to the Blender bug tracker because I have not been able to find such a glitch on any other application I use (Minecraft, GIMP, Kdenlive, etc) Short video of the issue: [Issue GIF](https://imgur.com/a/q9aacsv) (Issue becomes much worse when more geometry is in view) An observation that is perhaps relevant is that the problem becomes less intense (and at a point, disappears) when I reduce the window size of the application. **Exact steps for others to reproduce the error** Simply starting up Blender using the most recent updates on Arch with the above mentioned GPU, as shown in the GIF attached above featuring the default cube, results in this problem. **Excuse me, if bug reports for problems caused by drivers isn't accepted**

Arun Sojan Parolikkal commented

2022-01-05 19:42:58 +01:00

Added subscriber: @actuday

Garek commented

2022-01-05 20:05:31 +01:00

Added subscriber: @Garek

Garek commented

2022-01-05 20:05:31 +01:00

Thanks for the report. You're right, it's driver issue, see #94209. If you downgrade to 21.2.5 it should work fine. I'll merge reports.
Reporting driver bugs in up-to-date drivers is fine. We can't be sure if it's driver bug or not until we have report and some evidence, so if you're not sure if it's Blender bug or not -> report anyway. Once we have that, we can redirect users with same problem to that report with possible workaround.

Thanks for the report. You're right, it's driver issue, see #94209. If you downgrade to 21.2.5 it should work fine. I'll merge reports. Reporting driver bugs in up-to-date drivers is fine. We can't be sure if it's driver bug or not until we have report and some evidence, so if you're not sure if it's Blender bug or not -> report anyway. Once we have that, we can redirect users with same problem to that report with possible workaround.

Garek commented

2022-01-05 20:05:53 +01:00

Closed as duplicate of #94209

Garek closed this issue

2022-01-05 20:05:53 +01:00

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Flickering in Blender UI (Graphics driver issue) #94665