never mind. It does work on Sid afterall. Just forgot to type “optirun” before “darktable-cltest”
I think I need to test this on a properly installed system…
Btw, I find optimus works well with bumblebee, but on the live systems I created there is no bumblebee yet so it should work without optirun
Anyway, maybe it’s worth to mention that the other systems I only tested live so far, but why should Nvidia opencl not work on live systems?
Edit: problem solved. It’s not possible to make Nvidia opencl work on a live system. It’s functional on a normal installation of a Testing/Sid system though.