LuxCore didt see OpenCL devices on Linux

[Floke]

Prompt in what there can be a problem, LuxCore with openCL does not see OpenCL devices. Installed the latest driver for NVidia Cuda and OpenCL installed with it.

[Dade]

Prompt in what there can be a problem, LuxCore with openCL does not see OpenCL devices. Installed the latest driver for NVidia Cuda and OpenCL installed with it.

Are you sure the installation is correct and works ? Try to run LuxMark and check if it sees the devices.

[Floke]

can u say plz how to run it?

[Sharlybg]

can u say plz how to run it?

Download here: http://wiki.luxcorerender.org/LuxMark#Binaries the lastest veersion and follow website instruction.

[Floke]

Thanks! Here output when I try to run it
[floke@floke-PC luxmark-v3.1]$ ./luxmark --mode=BENCHMARK_OCL_GPU
X server found. dri2 connection failed!
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
terminate called after throwing an instance of 'cl::Error'
what(): clGetDeviceIDs
./luxmark: line 12: 14884 Aborted (core dumped) ./luxmark.bin "$@"

[Dade]

Thanks! Here output when I try to run it
[floke@floke-PC luxmark-v3.1]$ ./luxmark --mode=BENCHMARK_OCL_GPU
X server found. dri2 connection failed!
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
terminate called after throwing an instance of 'cl::Error'
what(): clGetDeviceIDs
./luxmark: line 12: 14884 Aborted (core dumped) ./luxmark.bin "$@"

You don't have a working OpenCL installation. Something may have gone wrong when you installed your GPU driver or you may have some kind of conflict between different installed packages. You can try to look for some information about you vendor driver and your Linux distribution combo. GPU vendors usually support only a very small number of specific Linux distributions.
Linux is quite a mess under this point of view.

[zukazuka]

It's working for me... Nvidia 1060 Linux Mint.

[ajm]

I had a random issue like this recently where my OpenCL device couldn't be found by Blender/Cycles or LuxCore. Just randomly stopped, and the only way to fix it was to reboot. Everything shows that it is installed, and the appropriate stuff is blacklisted, so I don't know what happened, but did notice it was happening after a system suspend, however, it hasn't happened since. Maybe a recent update threw something off. I'm on Mint 18.3.

[mib2berlin]

Hi, have the same problem with HD 4000 series on Kubuntu, GTX 760.
Luxmark 3.1 show both devices, LuxCore beta 3 does not.
HD 4400 is not bad, in earlier tests it was on par with GTX 750Ti in Luxmark

Cheers, mib.

[Dade]

Hi, have the same problem with HD 4000 series on Kubuntu, GTX 760.
Luxmark 3.1 show both devices, LuxCore beta 3 does not.
HD 4400 is not bad, in earlier tests it was on par with GTX 750Ti in Luxmark

For the same problem, do you mean you don't see any device in LuxCore or are you missing only the HD4000 ?

You have installed both Intel GPU and NVIDIA OpenCL drivers and they both work with LuxMark ? It is not easy, I know because I have both AMD and NVIDIA OpenCL on my Linux and sometime one tries to delete the other