Bug#889097: nvidia-libopencl1: Missing NVidia OpenCL platform

[Krzysztof Marczak]

Module loading mechanism seem to be working properly.
I have tested it as you described:

$ sudo modprobe -r nvidia
$ lsmod | grep nvidia           # there was no output
$ sudo nvidia-modprobe -u
$ lsmod | grep nvidia  #returned folowing:

nvidia_uvm            765952  0
nvidia              13168640  1 nvidia_uvm

It loaded nvidia_uvm as it should be.
After that I started sddm and tested OpenCL. It worked properly (like after
sudo clinfo).
So the problem is somewhere else.


2018-02-05 6:01 GMT+01:00 Andreas Beckmann <anbe at debian.org>:

> Control: tag -1 moreinfo
>
> On 2018-02-02 17:19, Krzysztof Marczak wrote:
> > Thank you for quick reply.
> > You were right. It's look like it's the same problem as reported in
> #888952
> > When after reboot I don't run clinfo as a root, the NVidia OpenCL
> platform
> > is not visible. After running 'sudo clinfo' it starts to work properly.
> > It's reproducible all the time.
> 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
>
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