On Sat, 2020-05-02 at 16:54 -0400, William Oliver wrote:
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@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.

I don't have any setups with an Nvidia gpu at the moment but the last time
I had anything to do with it (about a year ago) I had installed Ubuntu on
somebody else's laptop with hybrid graphics and Ubuntu standard offers to
install the Nvidia driver (Deb/Ubuntu package). Everything worked perfectly
and there was an Nvidia tool with a gui installed so that you could tune
the settings AND "disable" the Intel gpu (presumably to save power).
(I do not know what this means exactly given the possibly complicated
nature of the hardware connections).
Does the RPMfusion Nvidia driver not come with such a tool.
If it does you might be able to tune the Nvidia to do the things (CUDA) you want.

AV









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