Hey guys.
I use Debian 12. I just installed Houdini but whenever I try to launch Houdini, it gives this message

No OpenCL platform has the specified device type (HOUDINI_OCL_DEVICETYPE): GPU.
Falling back to built-in CPU OpenCL driver (see HOUDINI_USE_HFS_OCL)
No OpenCL platform has the specified device type (HOUDINI_OCL_DEVICETYPE): GPU.
Falling back to built-in CPU OpenCL driver (see HOUDINI_USE_HFS_OCL)
4440: Fatal error: Segmentation fault (sent by pid 0)

I have a GTX 1080.

I saw this fix online

"However, SideFX devs got a solution for me, so if that issue occurs to anyone, try to add this environment variable to your 'houdini.env' file:
HOUDINI_USE_HFS_OCL=0

This will prevent Houdini's built-in driver (also from CPU) from conflicting with GPU drivers."

but then I can't use my GPU for AXIOM for instance. Any ideas for this?

Thanks.

Hi guy, maybe i know how to fix it. I have a debian 12 system with houdini 19.5, everytime the crush happen with houdini start. error message is the same as yours, it's maybe a opencl problem, as i know, my system installed a nvidia driver v525.125.06, and NOT INSTALL CUDA TOOLKIT!so i did this:

apt install nvidia-cuda-dev nvidia-cuda-toolkit(you can find document https://wiki.debian.org/NvidiaGraphicsDrivers#Debian_12_.22Bookworm.22-1)

Restart computer, start houdini, everything working!!! i don't know why it working, maybe this action install the right OpenCL file.
Of cause, disable HOUDINI_USE_HFS_OCL=0 in houdini.env, after install cuda toolkit, don't forget this.

At last ,if you need Optix work, install it by apt install libnvoptix1

Hope this is helpful for you.