Broken OpenCL Runtime on 25.18.33578.6

[vparres]

Hello,

I'm using the Intel OpenCL Mod for LinuxServer's Jellyfin Docker image, and i found that OpenCL is broken since 25.18.33578.6 and it looked like an upstream issue.
I tested on both a A40 and a A380 GPU with 2 different machines. The Docker image is based on Ubuntu 24.04 noble, and uses Intel packages.

Downgrading to 25.13.33276.16 workaround the issue.

Using clinfo shows no OpenCL platform available even if the GPU is detected and VA-API is working properly:

root@vm-infra-jelly:/# clinfo
WARNING: Small BAR detected for device 0000:01:00.0
Number of platforms                               0

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.3.2
  ICD loader Profile                              OpenCL 3.0

More details on the original OpenCL Mod issue is available here : linuxserver/docker-mods#1034

Thank you for your help !

[need4swede]

Running Jellyfin on TrueNAS Scale with an Intel GPU, using Hotio's image: https://hotio.dev/containers/jellyfin/

This is what I did to get it working.

1. Access the Jellyfin Container

sudo docker exec -it jellyfin bash

2. Install Required OpenCL Tools

# Update package list
apt update
apt install -y clinfo ocl-icd-opencl-dev

3. Check Current OpenCL Status

# This will likely show "Number of platforms: 0" (broken) or command not found before installing clinfo
clinfo

4. Check Available Driver Versions

apt list -a intel-opencl-icd

5. Install Working Driver Version

# Install the older, working version
# This will install multiple dependencies including:
# - libclang-cpp14t64, libigc1, libigdfcl1
# - libllvm14t64, libllvmspirvlib14, libopencl-clang14
apt install intel-opencl-icd=23.43.27642.40-1ubuntu3

# When prompted, type 'y' to continue
# The installation will download ~50MB and use ~243MB of disk space

6. Verify OpenCL is Working

# This should now show your Intel Arc GPU properly
clinfo

7. Prevent Driver Updates

# Hold the package to prevent automatic updates
apt-mark hold intel-opencl-icd

8. Exit Container and Restart Jellyfin

exit
sudo docker restart jellyfin

[mkottman]

Not using Jellyfin, but I can confirm that upgrading intel-compute-runtime to 25.18.33578.6 breaks access to my GPU (Arc A750):

$ sycl-ls
WARNING: Small BAR detected for device 0000:03:00.0
WARNING: Small BAR detected for device 0000:03:00.0
[opencl:fpga][opencl:0] Intel(R) FPGA Emulation Platform for OpenCL(TM), Intel(R) FPGA Emulation Device OpenCL 1.2  [2024.18.12.0.05_160000]
[opencl:cpu][opencl:1] Intel(R) OpenCL, Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz OpenCL 3.0 (Build 0) [2024.18.12.0.05_160000]

Yes, I have an older system with no resizeable BAR (maybe some day), but the GPU still worked fine for my use-cases.

After downgrade back to 25.13.33276.16:

$ sycl-ls
[level_zero:gpu][level_zero:0] Intel(R) oneAPI Unified Runtime over Level-Zero, Intel(R) Arc(TM) A750 Graphics 12.55.8 [1.6.33276]
[opencl:fpga][opencl:0] Intel(R) FPGA Emulation Platform for OpenCL(TM), Intel(R) FPGA Emulation Device OpenCL 1.2  [2024.18.12.0.05_160000]
[opencl:cpu][opencl:1] Intel(R) OpenCL, Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz OpenCL 3.0 (Build 0) [2024.18.12.0.05_160000]
[opencl:gpu][opencl:2] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) A750 Graphics OpenCL 3.0 NEO  [25.13.33276]