How to force Xorg/Firefox to use iGPU instead of discrete nvidia card on a Clevo laptop?

[Dan]

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, March 24, 2021 2:03 PM, Aaron Plattner <aplattner at nvidia.com> wrote:

> Mesa lumps all of its drivers together under one vendor named "mesa" so
> you are supposed to be able to do something like this:
>
> DRI_PRIME=1 __GLX_VENDOR_LIBRARY_NAME=mesa glxinfo | grep vendor
>
> Unfortunately, Mesa doesn't like something about the GLX fbconfigs the
> NVIDIA driver provides, so it doesn't actually work:
>
> libGL error: No matching fbConfigs or visuals found

Here it doesn't return an error, but is stuck with nvidia:

$ DRI_PRIME=1 __GLX_VENDOR_LIBRARY_NAME=mesa glxinfo | grep vendor
server glx vendor string: NVIDIA Corporation
client glx vendor string: NVIDIA Corporation
OpenGL vendor string: NVIDIA Corporation

I'll try to ask in the Mesa forum. If I have any success, I'll post here.

Thanks!