Blender freezing in the Viewport edit mode for couple of seconds when selecting faces / edges / vertices or entering edit mode #80632

New Issue

Ondrej Martinek · 2020-09-09T14:34:09+02:00

Ondrej Martinek commented

2020-09-09 14:34:09 +02:00

System Information
Operating system: Windows 10 (Bootcamp on MacBook Pro 15 - 2015)
Graphics card: AMD Radeon R9 M370X with latest drivers
Using external display with non-hdpi resolution

Blender Version
Broken: v2.83.5

Short description of error
When modeling in a viewport, Blender freezes for couple of seconds before it starts running smoothly again. This happens very often when trying to select vertices / edges / face or when switching between edit and object mode.

Exact steps for others to reproduce the error

Switching from object mode to edit mode
Selecting edge, face or vertices
There doesn't seem to be any spikes in graphic performance or CPU usage. Actually when the freeze happen the graphic performance graph goes to zero.
It happen on any mesh no matter how complex it is.

I recorded a video showing the issue. In order to avoid any interference on the computer I used my phone. It is not loud enough but at 0:01 I left-lick to select the face. Between 0:01 and 0:04 the viewport view is completely frozen and only at 0:04 it unfreezes again. However all inputs are registered during that freeze time so if I click again or use some shortcut, the changes will also appear after the view unfreezes.

viewportfreeze.m4v

**System Information** Operating system: Windows 10 (Bootcamp on MacBook Pro 15 - 2015) Graphics card: AMD Radeon R9 M370X with latest drivers Using external display with non-hdpi resolution **Blender Version** Broken: v2.83.5 **Short description of error** When modeling in a viewport, Blender freezes for couple of seconds before it starts running smoothly again. This happens very often when trying to select vertices / edges / face or when switching between edit and object mode. **Exact steps for others to reproduce the error** - Switching from object mode to edit mode - Selecting edge, face or vertices - There doesn't seem to be any spikes in graphic performance or CPU usage. Actually when the freeze happen the graphic performance graph goes to zero. - It happen on any mesh no matter how complex it is. I recorded a video showing the issue. In order to avoid any interference on the computer I used my phone. It is not loud enough but at 0:01 I left-lick to select the face. Between 0:01 and 0:04 the viewport view is completely frozen and only at 0:04 it unfreezes again. However all inputs are registered during that freeze time so if I click again or use some shortcut, the changes will also appear after the view unfreezes. [viewportfreeze.m4v](https://archive.blender.org/developer/F8857871/viewportfreeze.m4v)

Ondrej Martinek commented

2020-09-09 14:34:10 +02:00

Added subscriber: @MirekDusin

Ondrej Martinek changed title from ~~Blander freezing in Viewport edit mode for couple of seconds when selecting faces / edges / vertices or entering edit mode~~ to Blender freezing in the Viewport edit mode for couple of seconds when selecting faces / edges / vertices or entering edit mode

2020-09-09 14:34:36 +02:00

Richard Antalik commented

2020-09-15 13:08:06 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-09-15 13:08:06 +02:00

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

Richard Antalik commented

2020-09-15 13:08:06 +02:00

Please download latest build from https://builder.blender.org/download/ and check if this is still an issue.

If I understand this correctly, there is no crash, only UI stops responding for few seconds?

Please download latest build from https://builder.blender.org/download/ and check if this is still an issue. If I understand this correctly, there is no crash, only UI stops responding for few seconds?

Ondrej Martinek commented

2020-09-15 15:05:02 +02:00

Hello, seems like the latest version have the same problem.
And yes, only the UI freezes, otherwise the Blender is stable, does not crash.

Hello, seems like the latest version have the same problem. And yes, only the UI freezes, otherwise the Blender is stable, does not crash.

Richard Antalik commented

2020-09-15 15:10:23 +02:00

Does this happen if you click on File > Defaults > Load Factory Settings, load file and perform test?

Ondrej Martinek commented

2020-09-16 10:17:08 +02:00

Ok, so it seems there might be some problem in the file I´m working with. With the default settings there was no UI freeze. I'm trying to figure out what would cause it. The file however was started around the time when 2.8 Blender was launched, so I wonder if that alone can be the cause.

Richard Antalik commented

2020-09-16 11:08:42 +02:00

Can you upload startup file so we can have a look?

Factory settings also disables all non-default addons, I would suspect issue would be there.

Can you upload startup file so we can have a look? Factory settings also disables all non-default addons, I would suspect issue would be there.

Ondrej Martinek commented

2020-09-17 09:42:50 +02:00

Oh, sorry if I explained it wrong. I meant that the startup file worked without any UI freezing, but the original file I was working on had that freezing happening. Here is the original file.
FurnitureWorkshop_v28.blend

Oh, sorry if I explained it wrong. I meant that the startup file worked without any UI freezing, but the original file I was working on had that freezing happening. Here is the original file. [FurnitureWorkshop_v28.blend](https://archive.blender.org/developer/F8891580/FurnitureWorkshop_v28.blend)

Richard Antalik commented

2020-09-17 15:08:28 +02:00

I don't have any problems with that file.

I still need to know answer to: Does this happen if you click on File > Defaults > Load Factory Settings, load file and perform test?
So there will be no addons running, also don't run any scripts when checking this.

I don't have any problems with that file. I still need to know answer to: Does this happen if you click on File > Defaults > Load Factory Settings, load file and perform test? So there will be no addons running, also don't run any scripts when checking this.

Ondrej Martinek commented

2020-09-18 14:17:21 +02:00

I loaded the Factory Setting and seems like it did not change anything. The UI still freezes in the file.

Richard Antalik commented

2020-09-28 07:43:49 +02:00

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

Richard Antalik commented

2020-09-28 07:43:49 +02:00

Not sure what could cause such lag. I guess this would be reproducible on similar setup to yours, but it would probably help to simplify example file by removing objects and all other elements (even custom workspaces and similar data) that does not cause the bug.

Ankit Meel commented

2021-04-18 15:35:52 +02:00

Added subscriber: @ankitm

Ankit Meel commented

2021-04-18 15:35:52 +02:00

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

Ankit Meel commented

2021-04-18 15:35:52 +02:00

Please try to narrow down the cause by removing items as long as you keep getting the lag.

Philipp Oeser commented

2021-05-07 12:52:49 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-05-07 12:52:49 +02:00

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

Philipp Oeser closed this issue

2021-05-07 12:52:49 +02:00

Philipp Oeser commented

2021-05-07 12:52:49 +02:00

No activity for more than a week. 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.

No activity for more than a week. 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.

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Blender freezing in the Viewport edit mode for couple of seconds when selecting faces / edges / vertices or entering edit mode #80632