Viewport freezes navigation and keyboard #119882

New Issue

Thomas-Brissot · 2024-03-25T17:00:05+01:00

Thomas-Brissot commented

2024-03-25 17:00:05 +01:00

System Information
Operating system: Windows-10-10.0.22631-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 4080 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 551.61

Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: 9be62e85b727
Worked: (newest version of Blender that worked as expected)

Short description of error
After a couple of objects (even very low poly) have been created I get "freezes" of the viewport. It is more noticeable if I have hit viewport shading and went back to the material view but it happens even if I don't do that.
The more geometry I have the more it happens. When the viewport is "locked" I can't rotate around objects, sometimes I can't even select objects, sometimes all the keys of my keyboard are just inactive, sometimes it just the Alt key (that I use to rotate). In that case hitting ctrl + alt +spacebar to go into full screen mode then hitting ctrl+alt+spacebar again back to the viewport seems to unlock the viewport and I can rotate around my scene again.
Another maybe less relevant detail (but...) : when the keyboard is locked, it is locked for all applications, so if I go on chrome or windows search I can't type anything.
Any help welcome :)

Exact steps for others to reproduce the error
To reproduce the issue on the file I sent, just click on "viewport shading" on the camera view, then either try to grab and transform elements and rotate around them in the viewport (with the camera being or not in viewport shading mode, it is the same for me).

**System Information** Operating system: Windows-10-10.0.22631-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 4080 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 551.61 **Blender Version** Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: `9be62e85b727` Worked: (newest version of Blender that worked as expected) **Short description of error** After a couple of objects (even very low poly) have been created I get "freezes" of the viewport. It is more noticeable if I have hit viewport shading and went back to the material view but it happens even if I don't do that. The more geometry I have the more it happens. When the viewport is "locked" I can't rotate around objects, sometimes I can't even select objects, sometimes all the keys of my keyboard are just inactive, sometimes it just the Alt key (that I use to rotate). In that case hitting ctrl + alt +spacebar to go into full screen mode then hitting ctrl+alt+spacebar again back to the viewport seems to unlock the viewport and I can rotate around my scene again. Another maybe less relevant detail (but...) : when the keyboard is locked, it is locked for all applications, so if I go on chrome or windows search I can't type anything. Any help welcome :) **Exact steps for others to reproduce the error** To reproduce the issue on the file I sent, just click on "viewport shading" on the camera view, then either try to grab and transform elements and rotate around them in the viewport (with the camera being or not in viewport shading mode, it is the same for me).

LittleScenePractice.blend

2.2 MiB

Thomas-Brissot added the

labels 2024-03-25 17:00:06 +01:00

Richard Antalik commented

2024-03-25 20:01:23 +01:00

@Thomas-Brissot I assume you mean rendered viewport shading. I can't reproduce this issue. Can you make a video recording?
On the surface this looks like stuck Ctrl key or something like that. Blender can not influence working of other programs like browsers. Could be OS issue as well.

@Thomas-Brissot I assume you mean rendered viewport shading. I can't reproduce this issue. Can you make a video recording? On the surface this looks like stuck Ctrl key or something like that. Blender can not influence working of other programs like browsers. Could be OS issue as well.

Richard Antalik added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2024-03-25 20:01:32 +01:00

Thomas-Brissot commented

2024-03-27 16:30:07 +01:00

@Thomas-Brissot I assume you mean rendered viewport shading. I can't reproduce this issue. Can you make a video recording?
On the surface this looks like stuck Ctrl key or something like that. Blender can not influence working of other programs like browsers. Could be OS issue as well.

Hi richard, sorry for the late reply. I tried again with the fille/scene I sent you, again switching from the rendered view to material view, I notice the same problem :
I can't use my pointer (in my case a pen & tablet) with alt to rotate, the letters of the keyboard are still available but no numbers or ctrl, alt, shift (very strange, I looked into windows keyboard settings but everything seems alright) . I still work around hitting ctrl + alt + spacebar to a full screen then back to the layout view with ctrl + alt + spacebar and it seems to unlock it. It hinders the workflow quite importantly as it happens every minute or so...

> @Thomas-Brissot I assume you mean rendered viewport shading. I can't reproduce this issue. Can you make a video recording? > On the surface this looks like stuck Ctrl key or something like that. Blender can not influence working of other programs like browsers. Could be OS issue as well. Hi richard, sorry for the late reply. I tried again with the fille/scene I sent you, again switching from the rendered view to material view, I notice the same problem : I can't use my pointer (in my case a pen & tablet) with alt to rotate, the letters of the keyboard are still available but no numbers or ctrl, alt, shift (very strange, I looked into windows keyboard settings but everything seems alright) . I still work around hitting ctrl + alt + spacebar to a full screen then back to the layout view with ctrl + alt + spacebar and it seems to unlock it. It hinders the workflow quite importantly as it happens every minute or so...

Richard Antalik commented

2024-03-27 19:39:48 +01:00

Does this happen when you don't use tablet, but use mouse instead?

👍 1

Thomas-Brissot commented

2024-03-28 08:43:53 +01:00

I tried to work with the mouse only and in a 10/15min test I did not encouter the problem.
(I forgot to mention I am on a laptop, in case this is useful information)

I tried to work with the mouse only and in a 10/15min test I did not encouter the problem. (I forgot to mention I am on a laptop, in case this is useful information)

Thomas-Brissot commented

2024-03-28 09:00:30 +01:00

So I looked a bit on a discussion about tablet problems in Blender and checked that my preferences are set to Tablet API : Automatic.
I also have Emulate 3 button mouse, continous grab and release confirms enabled.
The problem seems to be indeed related to the tablet as when the viewport navigation is "locked" I sometimes can't select meshes or I have a continuous (as it doesn't end when I take the pen out of the tablet) lasso selection as if I was maintaining pressure.

So I looked a bit on a discussion about tablet problems in Blender and checked that my preferences are set to Tablet API : Automatic. I also have Emulate 3 button mouse, continous grab and release confirms enabled. The problem seems to be indeed related to the tablet as when the viewport navigation is "locked" I sometimes can't select meshes or I have a continuous (as it doesn't end when I take the pen out of the tablet) lasso selection as if I was maintaining pressure.

Richard Antalik commented

2024-03-28 19:43:50 +01:00

Did this work in previous version of Blender? Can you check if changing tablet API does resolve this? I would try to update tablet drivers, and finally check if alpha build from https://builder.blender.org/download/daily/ does have this issue.

Unfortunately I don't have hardware to check, that said, please specify what tablet you use as these bugs are quite specific to exact models.

Did this work in previous version of Blender? Can you check if changing tablet API does resolve this? I would try to update tablet drivers, and finally check if alpha build from https://builder.blender.org/download/daily/ does have this issue. Unfortunately I don't have hardware to check, that said, please specify what tablet you use as these bugs are quite specific to exact models.

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Viewport freezes navigation and keyboard #119882