libze_intel_gpu.so didn't load when executing sycl-ls

[wdkwyf]

Hi, I'm using LNL and want to use level-zero iGPU. However, when I install NEO, only opencl environment is good.

KMD:
ubuntu 24.10

uname -r
6.11.0-1006-intel
UMD:
25.04 release
lsgpu
card1 Intel Lunarlake (Gen20) drm:/dev/dri/card1
└─renderD128 drm:/dev/dri/renderD128

ZE_ENABLE_LOADER_DEBUG_TRACE=1 sycl-ls

ZE_LOADER_DEBUG_TRACE:Using Loader Library Path:
ZE_LOADER_DEBUG_TRACE:Load Library of libze_intel_vpu.so failed with libze_intel_vpu.so: cannot open shared object file: No such file or directory
ZE_LOADER_DEBUG_TRACE:0 Drivers Discovered
ZE_LOADER_DEBUG_TRACE:Using Loader Library Path:
ZE_LOADER_DEBUG_TRACE:Load Library of libze_intel_vpu.so failed with libze_intel_vpu.so: cannot open shared object file: No such file or directory
ZE_LOADER_DEBUG_TRACE:0 Drivers Discovered
[opencl:cpu][opencl:0] Intel(R) OpenCL, Intel(R) Core(TM) Ultra 7 268V OpenCL 3.0 (Build 0) [2025.19.1.0.22_160000]
[opencl:gpu][opencl:1] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Graphics OpenCL 3.0 NEO  [25.04.32460]

sudo dpkg -l|grep libze
ii libze-intel-gpu-dev 25.04.32460-0 amd64 Intel(R) Graphics Compute Runtime for oneAPI Level Zero - development headers
ii libze-intel-gpu1 25.04.32460-0 amd64 Intel(R) Graphics Compute Runtime for oneAPI Level Zero.
sudo dpkg -l|grep libze
ii libze-intel-gpu-dev 25.04.32460-0 amd64 Intel(R) Graphics Compute Runtime
for oneAPI Level Zero - development headers
ii libze-intel-gpu1 25.04.32460-0 amd64 Intel(R) Graphics Compute Runtime for > oneAPI Level Zero.

sudo dpkg -l|grep level-zero
ii intel-level-zero-gpu-raytracing 1.0.0-80~u24.04 amd64 oneAPI Level Zero Ray Tracing Support
rc intel-level-zero-npu 1.13.0.20250131-13074932693 amd64 Intel(R) Level Zero Driver for NPU hardware
ii level-zero 1.20.2 amd64 oneAPI Level Zero
ii level-zero-devel 1.20.2 amd64 oneAPI Level Zero

libze_intel_gpu.so exist in /lib/x86_64-linux-gnu/, but the level zero only find vpu and didn't load any gpu so file.
If any suggestion, would be appreciate!

[nrspruit]

Hello @wdkwyf

So, please check your LD_LIBRARY_PATH, if the loader is only showing the libze_intel_vpu.so, then the libze_intel_gpu.so is missing from the path.

If the gpu driver library was in the path you would have seen:
ZE_LOADER_DEBUG_TRACE:Using Loader Library Path:
ZE_LOADER_DEBUG_TRACE:Load Library of libze_intel_gpu.so

In fact it should always print that unless the loader you are using is missing the lines:
static const char *knownDriverNames[] = {
MAKE_LIBRARY_NAME("ze_intel_gpu", "1"),
..

In the linux driver discovery.

Can you provide the logs from:

strace sycl-ls

and

SYCL_UR_TRACE=-1 sycl-ls

Thank you for your time!