On Sat, 2020-05-02 at 17:48 -0300, George N. White III wrote:On Sat, 2
May 2020 at 15:08, William Oliver <vendor(a)billoblog.com> wrote:
> I am running Fedora 31 on an HP Envy 17t laptop with a NVIDIA
MX250
> gpu. I have installed the NVIDIA driver downloaded from NVIDA,
> and it seems to have installed just fine. I have installed CUDA,
> as far as I can tell.
>
>
> I am trying to use the GPU rendering capabilities of Blender, a 3D
> modeling package. However, the package does not believe there is a
> CUDA compatible GPU installed.
>
> I *think* it's because I'm actually running the Intel VGA
> controller.
Are you using an Intel driver?
https://wiki.archlinux.org/index.php/Intel_graphics discusses pros
and cons of various drivers with Intel graphics.
There are firmware options that may affect "Optimus". Blender forums
and the Nvidia Developer (registration required) sites are more
likely to be helpful, but you will need to translate Debian/Ubuntu to
Fedora.
Well, Fedora installs the Intel driver as a matter of course. I
suppose I could try keeping the intel modules from loading into the
kernel, though I don't know exactly which ones those are. But I can
look it up. Maybe that will force things to the NVIDIA driver if it
doesn't crash graphics altogether. But I'm going to have to image the
disk before I start doing that kind of stuff.
Thanks.
> So, if I'm right, my question is, how do I disable the Intel
VGA
> controller (or not make it the default) so it uses the NVIDIA
> controller.
>
>
Even experts find this stuff painful:
https://www.pugetsystems.com/labs/hpc/NVIDIA-CUDA-GPU-computing-on-a-mode...
("modern" as of 2015, with Optimus technology).
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