Blender freezes with Cycles viewport rendering and Metal Blender backend #106090

New Issue

Alaska · 2023-03-24T09:20:55+01:00

Alaska commented

2023-03-24 09:20:55 +01:00

System Information
Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Pro 1.2

Blender Version
Broken version: 3.6.0 Alpha, branch: main, commit date: 2023-03-24 04:00, hash: c971adfeefb8
3.5.0
Worked: 3.4

Short description of error
Blender will freeze after using the Cycles rendered viewport for a bit on a mac with the Metal Blender backend.

Domonstration of Blender freezing with Metal backend.mp4

Exact steps for others to reproduce the error

Get a Mac.
Open Blender.
Open User Preferences, ensure Metal is selected as your GPU backend. (Note: This is the GPU backend for Blender. NOT the Cycles render device)
Restart Blender if you had to change the GPU backend setting.
Change the render engine to Cycles.
Enter the Cycles rendered viewport, start moving the camera around, duplicating objects, moving objects, etc.
After a short while, Blender should freeze. this is the bug I am reporting.

This issue does not occur if the OpenGL GPU backend is used. At least from my testing.

**System Information** Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Pro 1.2 **Blender Version** Broken version: 3.6.0 Alpha, branch: main, commit date: 2023-03-24 04:00, hash: `c971adfeefb8` 3.5.0 Worked: 3.4 **Short description of error** Blender will freeze after using the Cycles rendered viewport for a bit on a mac with the Metal Blender backend. [Domonstration of Blender freezing with Metal backend.mp4](/attachments/1a1396b7-45a4-4e27-8be9-7475f635fca4) **Exact steps for others to reproduce the error** 1. Get a Mac. 2. Open Blender. 3. Open `User Preferences`, ensure Metal is selected as your GPU backend. (Note: This is the GPU backend for Blender. NOT the Cycles render device) 4. Restart Blender if you had to change the GPU backend setting. 5. Change the render engine to Cycles. 6. Enter the Cycles rendered viewport, start moving the camera around, duplicating objects, moving objects, etc. 7. After a short while, Blender should freeze. this is the bug I am reporting. This issue does not occur if the OpenGL GPU backend is used. At least from my testing.

Domonstration of Blender freezing with Metal backend.mp4

3.1 MiB

Alaska added the

labels 2023-03-24 09:20:55 +01:00

Pratik Borhade commented

2023-03-27 07:43:38 +02:00

@mano-wii , can you check?

Germano Cavalcante commented

2023-03-28 04:19:13 +02:00

How long more or less does it take for it to crash while you rotate the view, move and duplicate the Cubes?

Does it make any difference to use CPU or GPU in Cycles?

Please try the latest daily build: https://builder.blender.org/download/

Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue.

System Information
Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 1.2

Blender Version
Broken: version: 3.5.0 Release Candidate, branch: blender-v3.5-release, commit date: 2023-03-27 18:51, hash: ba4442ef41cb

How long more or less does it take for it to crash while you rotate the view, move and duplicate the Cubes? Does it make any difference to use CPU or GPU in Cycles? Please try the latest daily build: https://builder.blender.org/download/ Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue. --- **System Information** Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 1.2 **Blender Version** Broken: version: 3.5.0 Release Candidate, branch: blender-v3.5-release, commit date: 2023-03-27 18:51, hash: `ba4442ef41cb`

Captura de Tela 2023-03-27 às 22.19.08.png

725 KiB

Germano Cavalcante added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2023-03-28 04:19:23 +02:00

Alaska commented

2023-03-28 12:32:20 +02:00

The issue has kind of gone away for me. I will explain what I mean by "kind of gone away" down below.

Should we close this report? Or should we leave it open just in case I get more information?

How long more or less does it take for it to crash while you rotate the view, move and duplicate the Cubes?
Does it make any difference to use CPU or GPU in Cycles?

Blender usually freezes after 10-30 seconds of using the Cycles viewport. And it didn't matter if I was using the CPU or GPU for rendering in Cycles. All that mattered was I was using the Metal backend for the Blender interface.

Please try the latest daily build: https://builder.blender.org/download/

Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue.

I did try downloading the latest version of Blender from the Blender website (3.6.0, commit date: 2023-03-27 23:56, hash: 16576beb222a), and loading factory defaults, this did not fix the issue.

I then rebooted my Mac and tested again. The issue was gone.

Extra information

This issue first started a few weeks ago, but other issues were occurring on my Mac unrelated to Blender, and I hadn't seen anyone else report this issue, so I factory reset the Mac in hope that this issue and the other ones go away.

After the factory reset, the freezing issue continued and I made this bug report.

I have rebooted my Mac a few times between first making the report and now, and it hasn't resolved the issue before.

Based on my testing, it seems the issue might be with the Metal GPU drivers or something? I don't know if there's much that can be done on the Blender side.

The issue has kind of gone away for me. I will explain what I mean by "kind of gone away" down below. Should we close this report? Or should we leave it open just in case I get more information? --- > How long more or less does it take for it to crash while you rotate the view, move and duplicate the Cubes? > Does it make any difference to use CPU or GPU in Cycles? Blender usually freezes after 10-30 seconds of using the Cycles viewport. And it didn't matter if I was using the CPU or GPU for rendering in Cycles. All that mattered was I was using the Metal backend for the Blender interface. > Please try the latest daily build: https://builder.blender.org/download/ > > Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue. I did try downloading the latest version of Blender from the Blender website (3.6.0, commit date: 2023-03-27 23:56, hash: `16576beb222a`), and loading factory defaults, this did not fix the issue. I then rebooted my Mac and tested again. The issue was gone. --- Extra information This issue first started a few weeks ago, but other issues were occurring on my Mac unrelated to Blender, and I hadn't seen anyone else report this issue, so I factory reset the Mac in hope that this issue and the other ones go away. After the factory reset, the freezing issue continued and I made this bug report. I have rebooted my Mac a few times between first making the report and now, and it hasn't resolved the issue before. Based on my testing, it seems the issue might be with the Metal GPU drivers or something? I don't know if there's much that can be done on the Blender side.

Germano Cavalcante commented

2023-03-28 14:32:30 +02:00

There was a recent fix that caused Mac to freeze.
I'm not sure if the 2023-03-24 build already had the fixes, but it's a possibility.

Should we close this report? Or should we leave it open just in case I get more information?

If it has no activity for more than 1 week, it will be closed.

There was a recent fix that caused Mac to freeze. I'm not sure if the 2023-03-24 build already had the fixes, but it's a possibility. > Should we close this report? Or should we leave it open just in case I get more information? If it has no activity for more than 1 week, it will be closed.

Alaska commented

2023-03-28 22:10:18 +02:00

I've kind of found out what's causing the issue. There's a intense GPU app that I've been running in the background. The issue with Blender freezing only occurs while that app is also running. (This issue may occur with other apps as well, but I don't have many intense GPU apps on my Mac)

I have decided to build a debug version of Blender and run it through Xcode to see if I could get more useful information out of it when it freezes.

Once Blender freezes, this error message appears in Xcode and keeps repeating.

2023-03-29 07:48:46.938856+1300 Blender[12065:196200] Execution of the command buffer was aborted due to an error during execution. Caused GPU Timeout Error (00000002:kIOGPUCommandBufferCallbackErrorTimeout)

Blender version: 3.6.0 Alpha, branch: main, commit date: 2023-03-28 14:33, hash: 8d16e8f7261b

This could be a driver bug, or it could be a issue with Blender that's exposed by the strain put on the system by the other app, I'm not sure which.

If there's anything else I could help out with in trying to pin point this issue, please let me know.

Note: I'm not a confident developer or proficient debugging. If you would like me to get more information for you, please provide step by step instructions.

I've kind of found out what's causing the issue. There's a intense GPU app that I've been running in the background. The issue with Blender freezing only occurs while that app is also running. (This issue may occur with other apps as well, but I don't have many intense GPU apps on my Mac) I have decided to build a debug version of Blender and run it through Xcode to see if I could get more useful information out of it when it freezes. Once Blender freezes, this error message appears in Xcode and keeps repeating. > 2023-03-29 07:48:46.938856+1300 Blender[12065:196200] Execution of the command buffer was aborted due to an error during execution. Caused GPU Timeout Error (00000002:kIOGPUCommandBufferCallbackErrorTimeout) Blender version: 3.6.0 Alpha, branch: main, commit date: 2023-03-28 14:33, hash: `8d16e8f7261b` This could be a driver bug, or it could be a issue with Blender that's exposed by the strain put on the system by the other app, I'm not sure which. If there's anything else I could help out with in trying to pin point this issue, please let me know. Note: I'm not a confident developer or proficient debugging. If you would like me to get more information for you, please provide step by step instructions.

Alaska referenced this issue

2023-04-03 03:21:14 +02:00

Application freezes and needs force quitting when moving with cycles viewport render active. #106474

Alaska commented

2023-04-06 03:30:23 +02:00

I will close the report as #106401 is a similar report, and was fixed, and I couldn't reproduce the issue with my limited testing.

Alaska closed this issue

2023-04-06 03:30:24 +02:00

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