Cycles render hangs on Linux and AMD Radeon RX 5700 XT #74262

New Issue

Rey Leonard M. Amorato · 2020-02-27T17:19:57+01:00

2020-02-27 17:19:57 +01:00

System Information
Operating system: Linux-5.3.0-40-generic-x86_64-with-Ubuntu-19.10-eoan 64 Bits
Graphics card: AMD Radeon RX 5700 XT (NAVI10, DRM 3.33.0, 5.3.0-40-generic, LLVM 9.0.0) X.Org 4.5 (Core Profile) Mesa 19.2.8

Blender Version
Broken: version: 2.83 (sub 5), branch: master, commit date: 2020-02-27 09:54, hash: 830a45a18a
Worked: 2.81

Short description of error
Blender fails to render using GPU

Exact steps for others to reproduce the error
blender --factory-startup > set render engine to Cycles > Set Device to GPU > Preferences - System - OpenCL > Render

Render fails with an error:

Split kernel error: failed to load kernel_path_init

blender-debug-gpu.txt

**System Information** Operating system: Linux-5.3.0-40-generic-x86_64-with-Ubuntu-19.10-eoan 64 Bits Graphics card: AMD Radeon RX 5700 XT (NAVI10, DRM 3.33.0, 5.3.0-40-generic, LLVM 9.0.0) X.Org 4.5 (Core Profile) Mesa 19.2.8 **Blender Version** Broken: version: 2.83 (sub 5), branch: master, commit date: 2020-02-27 09:54, hash: `830a45a18a` Worked: 2.81 **Short description of error** Blender fails to render using GPU **Exact steps for others to reproduce the error** blender --factory-startup > set render engine to Cycles > Set Device to GPU > Preferences - System - OpenCL > Render Render fails with an error: ``` Split kernel error: failed to load kernel_path_init ``` [blender-debug-gpu.txt](https://archive.blender.org/developer/F8375901/blender-debug-gpu.txt)

Rey Leonard M. Amorato commented

2020-02-27 17:19:57 +01:00

Added subscriber: @RL

blender-admin commented

2020-02-27 17:19:57 +01:00

#74275 was marked as duplicate of this issue

blender-admin commented

2020-02-27 17:34:43 +01:00

This issue was referenced by blender/cycles@210ac033e8

This issue was referenced by blender/cycles@210ac033e8d9d621b8a7cea667e30e5ca97a2e87

blender-admin commented

2020-02-27 17:34:43 +01:00

This issue was referenced by f48ad37ef0

This issue was referenced by f48ad37ef08f4b0767807f4e285e365368250157

Brecht Van Lommel commented

2020-02-27 17:38:48 +01:00

Changed status from 'Needs Triage' to: 'Resolved'

Brecht Van Lommel closed this issue

2020-02-27 17:38:48 +01:00

Brecht Van Lommel self-assigned this 2020-02-27 17:38:48 +01:00

Charlie Jolly commented

2020-02-27 20:16:32 +01:00

Added subscriber: @CharlieJolly

Charlie Jolly commented

2020-02-27 20:16:32 +01:00

@brecht Thanks for fixing this. How do I test for these errors in future?

Brecht Van Lommel commented

2020-02-27 20:30:03 +01:00

Rendering with OpenCL would help find them, if you have an AMD card. Normally we'd catch this quite quickly since I have an AMD card that I test with often, but I still didn't get this error (probably due to different driver version).

Charlie Jolly commented

2020-02-27 20:34:55 +01:00

In that case do you recommend to always test explicitly?

Rey Leonard M. Amorato commented

2020-02-27 21:26:40 +01:00

This fixed the error. Thanks for the quick fix Brecht! However now the render hangs indefinitely, without the black info bar at the top (the one that says how many samples are done, etc.) The render simply does not start, I don't know what to give you because there's no error out of the terminal or anything.

Brecht Van Lommel changed title from ~~Split kernel error: failed to load kernel_path_init~~ to Cycles render hangs on Linux and AMD Radeon RX 5700 XT

2020-02-28 14:28:00 +01:00

Brecht Van Lommel removed their assignment 2020-02-28 14:28:00 +01:00

Brecht Van Lommel commented

2020-02-28 14:28:00 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2020-02-28 14:28:00 +01:00

Changed status from 'Resolved' to: 'Confirmed'

Brecht Van Lommel reopened this issue

2020-02-28 14:28:00 +01:00

Brecht Van Lommel commented

2020-02-28 14:28:39 +01:00

Added subscriber: @mano-wii

Brecht Van Lommel commented

2020-02-28 14:29:20 +01:00

@CharlieJolly, whenever making changes to the Cycles kernel, we should always test Cycles GPU rendering.

Rey Leonard M. Amorato commented

2020-03-02 18:33:34 +01:00

Is there anything I could do to help?

Brecht Van Lommel commented

2020-03-02 19:13:22 +01:00

If you build Blender yourself, you could try to git bisect to find the specific commit that caused the issue. That can be quite time consuming of course.

Otherwise we will look at it before the 2.83 release.

If you build Blender yourself, you could try to git bisect to find the specific commit that caused the issue. That can be quite time consuming of course. Otherwise we will look at it before the 2.83 release.

Rey Leonard M. Amorato commented

2020-03-02 20:36:05 +01:00

should I mark commits that fail with Split kernel error: failed to load kernel_path_init bad or just the ones that hangs? The last time I tried to bisect, I marked those as good, git wasn't able to find the right commit.

should I mark commits that fail with `Split kernel error: failed to load kernel_path_init` bad or just the ones that hangs? The last time I tried to bisect, I marked those as good, git wasn't able to find the right commit.

Brecht Van Lommel commented

2020-03-02 20:45:30 +01:00

You can use git bisect skip for those.

You can use `git bisect skip` for those.

Rey Leonard M. Amorato commented

2020-03-03 12:14:07 +01:00

According to git bisect: ec62413f803ee506633f0e52d1e52b0980c0ed0d is the first bad commit.

Hope this helps.

According to git bisect: `ec62413f803ee506633f0e52d1e52b0980c0ed0d` is the first bad commit. Hope this helps.

Brecht Van Lommel commented

2020-03-09 17:34:17 +01:00

Thanks. Unfortunately, that's not the specific commit that would have caused it, but maybe with skipping it wasn't able to find something closer.

Rey Leonard M. Amorato commented

2020-03-10 08:55:00 +01:00

I agree it's a bit weird since there are no cycles-specific files edited in that commit, but I don't get the error when building with the commit before that. Or earlier. I'm only having problems after that specific commit. So maybe git bisect was on to something and this is something that could be looked at.

Rey Leonard M. Amorato commented

2020-03-28 06:45:56 +01:00

Hi Brecht, is there anything else I could do to help at this point?

Evan Wilson commented

2020-04-05 12:22:44 +02:00

Added subscriber: @EAW

Evan Wilson commented

2020-04-05 12:22:44 +02:00

Isn’t that the commit that broke the NVIDIA symbol from Blender being recognized on certain Windows laptops because USD exports around 2000 symbols?

@RL have you tried building Blender without USD?

Isn’t that the commit that broke the NVIDIA symbol from Blender being recognized on certain Windows laptops because USD exports around 2000 symbols? @RL have you tried building Blender without USD?

Rey Leonard M. Amorato commented

2020-04-05 16:30:44 +02:00

@EAW @brecht I did try to build without USD (WITH_USD:BOOL=OFF) and GPU render works without issues. I'm convinced that USD is indeed the culprit.

@EAW @brecht I did try to build without USD (`WITH_USD:BOOL=OFF`) and GPU render works without issues. I'm convinced that USD is indeed the culprit.

Brecht Van Lommel commented

2020-04-05 21:17:27 +02:00

@EAW, is there a report about this NVIDIA symbol issue? I was not aware of this, also seems surprising.

@RL), I committed some changes in bae1c24, they may help but I'm not particularly hopeful about that.

These are now the symbols added by enabled WITH_USD: P1327.

I'm not sure if the solution is to be found in there. I guess either the AMD OpenCL driver actually contains USD code (or loads another library that does), or there are symbols with names that happen to match.

@EAW, is there a report about this NVIDIA symbol issue? I was not aware of this, also seems surprising. @RL), I committed some changes in bae1c24, they may help but I'm not particularly hopeful about that. These are now the symbols added by enabled `WITH_USD`: [P1327](https://archive.blender.org/developer/P1327.txt). I'm not sure if the solution is to be found in there. I guess either the AMD OpenCL driver actually contains USD code (or loads another library that does), or there are symbols with names that happen to match.

Ray molenkamp commented

2020-04-05 21:46:06 +02:00

Added subscribers: @evan-4, @LazyDodo

Ray molenkamp commented

2020-04-05 21:46:06 +02:00

@evan-4 Wilson (EAW), is there a report about this NVIDIA symbol issue? I was not aware of this, also seems surprising.

#72841 was a ticket but there are more from around the same time.

Problem was remedied in D6563 D6645 D6646 D6647

I never took apart the nvidia driver to validate, but if the NvOptimusEnablement has a too high ordinal (gut feeling says > 1024, but it's hard to test) it stops working.

> @evan-4 Wilson (EAW), is there a report about this NVIDIA symbol issue? I was not aware of this, also seems surprising. #72841 was a ticket but there are more from around the same time. Problem was remedied in [D6563](https://archive.blender.org/developer/D6563) [D6645](https://archive.blender.org/developer/D6645) [D6646](https://archive.blender.org/developer/D6646) [D6647](https://archive.blender.org/developer/D6647) I never took apart the nvidia driver to validate, but if the `NvOptimusEnablement` has a too high ordinal (gut feeling says > 1024, but it's hard to test) it stops working.

Evan Wilson commented

2020-04-05 21:53:12 +02:00

@brecht what @LazyDodo said.

Rey Leonard M. Amorato commented

2020-04-06 02:41:46 +02:00

Tried out latest master, issue still persists when building with USD.

Brecht Van Lommel commented

2020-04-07 03:48:27 +02:00

Which OpenCL driver version is this? Can you attach the output of Help > Save System Info?

I'm using amdgpu-pro-19.50-990351-ubuntu-18.04.

Which OpenCL driver version is this? Can you attach the output of Help > Save System Info? I'm using `amdgpu-pro-19.50-990351-ubuntu-18.04`.

Rey Leonard M. Amorato commented

2020-04-07 10:20:17 +02:00

I'm using amdgpu-pro-19.50-967956-ubuntu-18.04

system-info.txt

I'm using `amdgpu-pro-19.50-967956-ubuntu-18.04` [system-info.txt](https://archive.blender.org/developer/F8454289/system-info.txt)

Maros commented

2020-04-14 13:19:16 +02:00

Added subscriber: @Wor3d

Rey Leonard M. Amorato commented

2020-04-21 17:15:37 +02:00

With the 2.90 builds (5cc7e2ae16) and an upgraded driver (amdgpu-pro-20.10-1048554-ubuntu-18.04) the render does not hang anymore for me, instead this happens now: #75895

With the 2.90 builds (`5cc7e2ae16`) and an upgraded driver (`amdgpu-pro-20.10-1048554-ubuntu-18.04`) the render does not hang anymore for me, instead this happens now: #75895

Jeroen Bakker commented

2020-04-22 16:09:25 +02:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2020-04-30 10:11:46 +02:00

Unable to reproduce using ubuntu 18.04.4 HWE + amdgpu-pro-20.10

system-info.txt

Unable to reproduce using ubuntu 18.04.4 HWE + amdgpu-pro-20.10 [system-info.txt](https://archive.blender.org/developer/F8502557/system-info.txt)

Aaron commented

2020-04-30 15:01:50 +02:00

Added subscriber: @pixlpusher

Aaron commented

2020-04-30 15:01:50 +02:00

Just downloaded 2.82a and I still get this error. Blender freezes at the pie menu when attempting to switch to render preview. I was able to build 2.83 and it works, the usd flag was already switched when I checked for it.

Host: a2L Kernel: 5.6.7-050607-generic x86_64 bits: 64 compiler: gcc v: 9.3.0

         Desktop: Cinnamon 4.2.4 wm: muffin dm: LightDM Distro: Linux Mint 19.2 Tina 
         base: Ubuntu 18.04 bionic

Machine: Type: Desktop Mobo: ASRock model: X570M Pro4 serial:

         UEFI [Legacy]: American Megatrends v: P1.90 date: 09/10/2019

CPU: Topology: 8-Core model: AMD Ryzen 7 2700X bits: 64 type: MT MCP arch: Zen+ rev: 2

         L2 cache: 4096 KiB 
         flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 118384 
         Speed: 1888 MHz min/max: 2200/3700 MHz Core speeds (MHz): 1: 1892 2: 1982 3: 2074

       4: 2200 5: 2199 6: 2198 7: 2199 8: 2199 9: 1891 10: 2197 11: 2198 12: 2200 13: 2199 
       14: 2199 15: 2196 16: 2194

Graphics: Device-1: AMD Vega 10 XT [Radeon RX Vega 64] driver: amdgpu v: kernel bus ID: 0a:00.0

         chip ID: 1002:687f 
         Display: x11 server: X.Org 1.19.6 driver: amdgpu,ati 
         unloaded: fbdev,modesetting,radeon,vesa resolution: 2560x1080~60Hz 
         OpenGL: renderer: Radeon RX Vega v: 4.6.13572 Core Profile Context compat-v: 4.6.13572 
         direct render: Yes

amdgpu-pro-19.30-934563-ubuntu-18.04

Just downloaded 2.82a and I still get this error. Blender freezes at the pie menu when attempting to switch to render preview. I was able to build 2.83 and it works, the usd flag was already switched when I checked for it. ![blender_2.82a_dl04.30.20.png](https://archive.blender.org/developer/F8503146/blender_2.82a_dl04.30.20.png) Host: a2L Kernel: 5.6.7-050607-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 ``` Desktop: Cinnamon 4.2.4 wm: muffin dm: LightDM Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic ``` Machine: Type: Desktop Mobo: ASRock model: X570M Pro4 serial: <filter> ``` UEFI [Legacy]: American Megatrends v: P1.90 date: 09/10/2019 ``` CPU: Topology: 8-Core model: AMD Ryzen 7 2700X bits: 64 type: MT MCP arch: Zen+ rev: 2 ``` L2 cache: 4096 KiB flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 118384 Speed: 1888 MHz min/max: 2200/3700 MHz Core speeds (MHz): 1: 1892 2: 1982 3: 2074 ``` 4: 2200 5: 2199 6: 2198 7: 2199 8: 2199 9: 1891 10: 2197 11: 2198 12: 2200 13: 2199 14: 2199 15: 2196 16: 2194 Graphics: Device-1: AMD Vega 10 XT [Radeon RX Vega 64] driver: amdgpu v: kernel bus ID: 0a:00.0 ``` chip ID: 1002:687f Display: x11 server: X.Org 1.19.6 driver: amdgpu,ati unloaded: fbdev,modesetting,radeon,vesa resolution: 2560x1080~60Hz OpenGL: renderer: Radeon RX Vega v: 4.6.13572 Core Profile Context compat-v: 4.6.13572 direct render: Yes ``` amdgpu-pro-19.30-934563-ubuntu-18.04

Rey Leonard M. Amorato commented

2020-04-30 17:01:35 +02:00

This comment was removed by @RL

*This comment was removed by @RL*

Rey Leonard M. Amorato commented

2020-04-30 17:13:22 +02:00

With the D7574 fix, I no longer have this issue.

With the [D7574](https://archive.blender.org/developer/D7574) fix, I no longer have this issue.

Brecht Van Lommel commented

2020-05-01 19:50:08 +02:00

@pixlpusher, do you have the issue with the latest 2.83 Beta build?
https://builder.blender.org/download/

We could advise users to upgrade to the amdgpu-pro-20.x driver, but it would be interesting to know if amdgpu-pro-19.x still has the issue.

@pixlpusher, do you have the issue with the latest 2.83 Beta build? https://builder.blender.org/download/ We could advise users to upgrade to the amdgpu-pro-20.x driver, but it would be interesting to know if amdgpu-pro-19.x still has the issue.

Aaron commented

2020-05-01 21:31:54 +02:00

bstop.m4v Yes, I just downloaded blender-2.83-7a809a7504de-linux64 and it does freeze.

[bstop.m4v](https://archive.blender.org/developer/F8506429/bstop.m4v) Yes, I just downloaded blender-2.83-7a809a7504de-linux64 and it does freeze.

Aaron commented

2020-05-01 21:35:03 +02:00

blocal.m4v However, 2.83 I build locally works? I just followed the directions on the website to build.

[blocal.m4v](https://archive.blender.org/developer/F8506438/blocal.m4v) However, 2.83 I build locally works? I just followed the directions on the website to build.

Aaron commented

2020-05-02 00:24:12 +02:00

This comment was removed by @pixlpusher

*This comment was removed by @pixlpusher*

Maros commented

2020-05-02 11:35:11 +02:00

Removed subscriber: @Wor3d