Segmentation fault with edit mode operation #70187

New Issue

Rey Leonard M. Amorato · 2019-09-23T19:05:12+02:00

2019-09-23 19:05:12 +02:00

System Information
Operating system: Linux-5.0.0-29-generic-x86_64-with-Ubuntu-19.04-disco 64 Bits
Graphics card: Radeon RX 580 Series (POLARIS10, DRM 3.33.0, 5.0.0-29-generic, LLVM 8.0.0) X.Org 4.5 (Core Profile) Mesa 19.0.8

Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 15:03, hash: 2713921e8a
Worked: 2.81 (sub 8), branch: master (modified), commit date: 2019-09-08 16:45, hash: 7ab936c5b9

Short description of error
Segmentation fault

Exact steps for others to reproduce the error
With the default cube, enter edit mode and try to merge vertices with Alt+M
Options At Center; At Cursorand Collapse crashes Blender

blender.crash.txt

**System Information** Operating system: Linux-5.0.0-29-generic-x86_64-with-Ubuntu-19.04-disco 64 Bits Graphics card: Radeon RX 580 Series (POLARIS10, DRM 3.33.0, 5.0.0-29-generic, LLVM 8.0.0) X.Org 4.5 (Core Profile) Mesa 19.0.8 **Blender Version** Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 15:03, hash: `2713921e8a` Worked: 2.81 (sub 8), branch: master (modified), commit date: 2019-09-08 16:45, hash: `7ab936c5b9` **Short description of error** Segmentation fault **Exact steps for others to reproduce the error** With the default cube, enter edit mode and try to merge vertices with Alt+M Options *At Center*; *At Cursor*and *Collapse* crashes Blender [blender.crash.txt](https://archive.blender.org/developer/F7772355/blender.crash.txt)

Rey Leonard M. Amorato commented

2019-09-23 19:05:12 +02:00

Added subscriber: @RL

Philipp Oeser commented

2019-09-24 13:10:32 +02:00

Added subscribers: @fclem, @Jeroen-Bakker, @lichtwerk

Philipp Oeser commented

2019-09-24 13:10:32 +02:00

Looks like a crash in the GPU driver.

@RL : I assume you tested this with File → Defaults → Load Factory Settings?
@Jeroen-Bakker, @fclem: does this ring a bell?

Looks like a crash in the GPU driver. @RL : I assume you tested this with File → Defaults → Load Factory Settings? @Jeroen-Bakker, @fclem: does this ring a bell?

Jeroen Bakker commented

2019-09-24 13:50:52 +02:00

Mesa 19.0.8 is really flaky. @RL Can you update to the latest drivers of your distribution?
I am able to reproduce this on a machine here. Will investigate in more depth what the actual issue in the driver is.

Mesa 19.0.8 is really flaky. @RL Can you update to the latest drivers of your distribution? I am able to reproduce this on a machine here. Will investigate in more depth what the actual issue in the driver is.

Jeroen Bakker commented

2019-09-24 14:33:42 +02:00

With the --debug-gpu-force-workarounds it does not crash for me.
I will see what workaround is needed and enable this one for this specific configuration.

With the `--debug-gpu-force-workarounds` it does not crash for me. I will see what workaround is needed and enable this one for this specific configuration.

Rey Leonard M. Amorato commented

2019-09-24 17:56:55 +02:00

@lichtwerk Yes, this is with Factory Settings.
@Jeroen-Bakker I believe 19.0.8 is the latest for Ubuntu 19.04... Trying 19.3 using a PPA caused my Desktop to fall into a login loop.
No crash with --debug-gpu-force-workarounds too.

Upon further testing, it seems it crashes when the mesh does not have enough vertices to sustain a face.

@lichtwerk Yes, this is with Factory Settings. @Jeroen-Bakker I believe 19.0.8 is the latest for Ubuntu 19.04... Trying 19.3 using a PPA caused my Desktop to fall into a login loop. No crash with `--debug-gpu-force-workarounds` too. Upon further testing, it seems it crashes when the mesh does not have enough vertices to sustain a face.

noki paike commented

2019-09-25 05:52:45 +02:00

Added subscriber: @nokipaike

noki paike commented

2019-09-25 05:52:45 +02:00

^___^
guys, I've been trying for weeks to tell you that AMD GPUs work better on linux with workarounds

https://developer.blender.org/rBd0c772f68b84267e15630064fc21cc54fc7209f0#246612

I await debugging those fluorescent and inverted lights (on my gpu)
otherwise I am forced to use blender with half the performance on linux

^___^ guys, I've been trying for weeks to tell you that AMD GPUs work better on linux with workarounds https://developer.blender.org/rBd0c772f68b84267e15630064fc21cc54fc7209f0#246612 I await debugging those fluorescent and inverted lights (on my gpu) otherwise I am forced to use blender with half the performance on linux

blender-admin commented

2019-09-25 15:54:55 +02:00

This issue was referenced by f8da7218be

This issue was referenced by f8da7218be130b26eccc33df2ba78004509e4b82

Jeroen Bakker commented

2019-09-25 15:58:32 +02:00

Changed status from 'Open' to: 'Resolved'

Jeroen Bakker closed this issue

2019-09-25 15:58:32 +02:00

Jeroen Bakker self-assigned this 2019-09-25 15:58:32 +02:00

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Segmentation fault with edit mode operation #70187