Control: tag -1 moreinfo On 2018-01-31 15:45, Pascal Obry wrote: > I don't understand why clinfo as root seems to "unblock" something. Any idea?
it loads the kernel module, which *should* also work if clinfo is run as regular user > I have reproduced this 2 times, so I'm pretty sure about the above > report even if it seems strange. > > Let me know if you want me to do some more testing. I cannot reproduce the problem here. (Tried the 384.111 driver from stretch-backports, using both ocl-icl-libopencl1 and nvidia-libopencl1. Only possible difference is that I'm running a rather old non-distro kernel for unrelated reasons.) But it should be easy for you to test the module loading mechanism, assuming you don't have X running using the nvidia driver: $ sudo modprobe -r nvidia # unload all nvidia modules $ lsmod | grep nvidia # expect no output $ nvidia-modprobe -u # NVIDIA's setuid root helper $ lsmod | grep nvidia # expect nvidia and nvidia-uvm If that doesn't work for you, the setuid helper nvidia-modprobe is not working properly on your system $ ls -la /usr/bin/nvidia-modprobe should print -rwsr-xr-x 1 root root ... ^ ^^^^ Andreas
