Subdivision Surface Crash #96478

New Issue

Alaska · 2022-03-15T04:46:37+01:00

(Deleted) commented

2022-03-15 04:46:37 +01:00

(Migrated from localhost:3001)

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: Intel(R) HD Graphics 4600 Intel 4.3.0 - Build 20.19.15.5171

Blender Version
Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-03-14 00:08, hash: b959f603da
Worked: (newest version of Blender that worked as expected)

Short description of error
Blender crashes when I set the Subdivision Surface Levels Viewport to 6.

Exact steps for others to reproduce the error

Add an object (for example, Suzanne)
Add a Subdivision Surface modifier and the Levels Viewport to 6 or above.

surface_subdivision_crash.blend

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: Intel(R) HD Graphics 4600 Intel 4.3.0 - Build 20.19.15.5171 **Blender Version** Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-03-14 00:08, hash: `b959f603da` Worked: (newest version of Blender that worked as expected) **Short description of error** Blender crashes when I set the Subdivision Surface Levels Viewport to 6. **Exact steps for others to reproduce the error** 1. Add an object (for example, Suzanne) 2. Add a *Subdivision Surface* modifier and the Levels Viewport to 6 or above. [surface_subdivision_crash.blend](https://archive.blender.org/developer/F12928261/surface_subdivision_crash.blend)

(Deleted) commented

2022-03-15 04:46:37 +01:00

(Migrated from localhost:3001)

Added subscriber: @(Deleted)

Alaska commented

2022-03-15 05:23:35 +01:00

Added subscriber: @Alaska

Alaska commented

2022-03-15 05:23:35 +01:00

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

Alaska commented

2022-03-15 05:23:35 +01:00

This is most likely caused by the GPU subdivision surface modifier introduced in Blender 3.1. Something you can do to try fix this is see if updating your GPU drivers resolves the issue.
If that doesn't help, then are you able to upload the crash log. This can be done by following these steps:

Open Blender.
Do the things you do to get it to crash.
Find the file C:/tmp/blender.crash.txt and upload it to this site.

Are you also able to upload your system information. This can be done by following these steps:

Select from the top of Blender {nav Help -> Save System Info}
Upload the file saved from that to this site.

If updating your GPU drivers doesn't help then you can try disabling GPU subdivision and see if that helps. This can be done by following these steps:

Select from the top of Blender {nav Edit > Preferences} and a new window will open
In the preferences window, navigate to the Viewport tab.
Scroll to the bottom of the Viewport tab, and in the Subdivision section disable GPU subdivision.
Test again and see if Blender crashes.

This is most likely caused by the GPU subdivision surface modifier introduced in Blender 3.1. Something you can do to try fix this is see if updating your GPU drivers resolves the issue. If that doesn't help, then are you able to upload the crash log. This can be done by following these steps: 1. Open Blender. 2. Do the things you do to get it to crash. 3. Find the file `C:/tmp/blender.crash.txt` and upload it to this site. Are you also able to upload your system information. This can be done by following these steps: 1. Select from the top of Blender {nav Help -> Save System Info} 2. Upload the file saved from that to this site. --- If updating your GPU drivers doesn't help then you can try disabling GPU subdivision and see if that helps. This can be done by following these steps: 1. Select from the top of Blender {nav Edit > Preferences} and a new window will open 2. In the preferences window, navigate to the `Viewport` tab. 3. Scroll to the bottom of the `Viewport` tab, and in the `Subdivision` section disable `GPU subdivision`. 4. Test again and see if Blender crashes.

(Deleted) commented

2022-03-16 00:48:51 +01:00

(Migrated from localhost:3001)

I tried going to Edit >Preferences and, the GPU Subdivision is off. So I tried to enable it and, surprisingly, Subdivision Surface seemed to work much better when I enabled GPU Subdivision. Anyways, I'll still provide the files that you want to me upload.

I tried going to **Edit** >**Preferences** and, the GPU Subdivision is off. So I tried to enable it and, surprisingly, Subdivision Surface seemed to work much better when I enabled GPU Subdivision. Anyways, I'll still provide the files that you want to me upload.

(Deleted) commented

2022-03-16 01:43:12 +01:00

(Migrated from localhost:3001)

Ah, I can't find blender.crash.txt on C:/tmp/blender.crash.txt but this is the system info file.

system-info.txt

Ah, I can't find **blender.crash.txt** on **C:/tmp/blender.crash.txt** but this is the system info file. [system-info.txt](https://archive.blender.org/developer/F12929295/system-info.txt)

Alaska commented

2022-03-16 03:43:47 +01:00

In #96478#1323783, @SammuelProductions wrote:
Ah, I can't find blender.crash.txt on C:/tmp/blender.crash.txt but this is the system info file.

The file should be there if you follow these steps:

Open Blender.
Follow the steps to recreate a crash. (In your case, add an object, give it a subdivision surface modifier, set it to level 6)
If Blender crashes from following the steps above, that file should be there.

If you open a file. For example cats.blend then follow the steps to get Blender to crash, then the file will be C:/tmp/cats.crash.txt

If you reboot your computer, the file will disappear.

> In #96478#1323783, @SammuelProductions wrote: > Ah, I can't find **blender.crash.txt** on **C:/tmp/blender.crash.txt** but this is the system info file. The file should be there if you follow these steps: 1. Open Blender. 2. Follow the steps to recreate a crash. (In your case, add an object, give it a subdivision surface modifier, set it to level 6) 3. If Blender crashes from following the steps above, that file should be there. If you open a file. For example `cats.blend` then follow the steps to get Blender to crash, then the file will be `C:/tmp/cats.crash.txt` If you reboot your computer, the file will disappear.

Jesse Yurkovich commented

2022-03-16 04:29:22 +01:00

Added subscriber: @deadpin

Jesse Yurkovich commented

2022-03-16 04:29:22 +01:00

Windows works differently than other platforms and the crash file is written to the following per-user location:
For example with a crash here: Writing: C:\Users\jesse\AppData\Local\Temp\CrashAllObjects.crash.txt

It's also not cleared on reboot typically. You can try checking there to see if you have a crash file after you attempt things again.

Windows works differently than other platforms and the crash file is written to the following per-user location: For example with a crash here: `Writing: C:\Users\jesse\AppData\Local\Temp\CrashAllObjects.crash.txt` It's also not cleared on reboot typically. You can try checking there to see if you have a crash file after you attempt things again.

(Deleted) commented

2022-03-17 05:28:34 +01:00

(Migrated from localhost:3001)

Ah, I checked on the Temp folder but I can't see subdivision_surface_crash.crash.txt. Please check the image below:

Ah, I checked on the Temp folder but I can't see **subdivision_surface_crash.crash.txt**. Please check the image below:![Screenshot 2022-03-17 121740.png](https://archive.blender.org/developer/F12931135/Screenshot_2022-03-17_121740.png)

Pratik Borhade commented

2022-03-25 11:39:41 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-03-25 11:39:41 +01:00

Run blender_debug_log.cmd or blender_debug_gpu.cmd (in same directory where blender.exe is located)
Reproduce crash on the open
Windows explorer will open with two files : upload blender_debug_output.txt file here
Upgrade your GPU driver to the most recent one: https://docs.blender.org/manual/en/3.2/troubleshooting/gpu/windows/intel.html

- Run `blender_debug_log.cmd` or `blender_debug_gpu.cmd` (in same directory where blender.exe is located) - Reproduce crash on the open - Windows explorer will open with two files : upload `blender_debug_output.txt` file here Upgrade your GPU driver to the most recent one: https://docs.blender.org/manual/en/3.2/troubleshooting/gpu/windows/intel.html

Pratik Borhade commented

2022-03-29 07:31:57 +02:00

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

Pratik Borhade closed this issue

2022-03-29 07:31:57 +02:00

Pratik Borhade commented

2022-03-29 07:31:57 +02:00

Reporter's account does not exist anymore. So closing this report straightaway :)

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Subdivision Surface Crash #96478