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I have hopefully a quick question that I haven't been able to resolve:

I installed Ubuntu 20.04, (great distro by the way). I'm running the NVIDIA driver with the "on demand" profile on the prime settings.

All I have to do is right click on the Icon of the program and choose "Launch using dedicated Graphics Card", and all is well. It runs smoothly. If I Don't do it this way, the performance is "choppy" because it uses the Intel graphics card instead of the NVIDIA.

(BTW, if I put the driver on "performance" mode on the PRIME profiles. The programs get the Intel card no matter what, I don't know why that is, but I'm working fine with the "on demand" mode.

However.... this is my question:

I have a couple programs like Meshroom that do not use and installer or package, and runs directly with a binary in the terminal.

But when I execute it, it always get the Intel graphics card".

Do you know what line (Or lines in a little script) do I need to put on the command line to execute the command with Dedicated graphics support?

I've been looking around and the methods for Ubuntu 16 and 18 like putting "DRI_PRIME=1" in front of the command don't seem to work with this new release.

Thanks a lot. I would really appreciate your answers, insight or suggestions. :)

Have a great day. Stay safe.

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2 Answers 2

Reset to default
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__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia <app to execute>

As far as I know, it was usefull on 19.10 for me.

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This answer is also for others to know, that the proposal of @"Noctis" https://askubuntu.com/users/817301/noctis works perfectly in Ubuntu 22.04 Gnome Desktop with Wayland, too.

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