Ubuntu
nvidia-settings package

  1. Bug #1895327
  2. Comment #5

Comment 5 for bug 1895327

Revision history for this message
Olivier V (forum-viennet) wrote : Re: PRIME Render Offload "On-Demand" not supported

meloli@Asus-A17:~$ prime-select query
on-demand

meloli@Asus-A17:~$ nvidia-smi
| 0 GeForce GTX 166... Off | 00000000:01:00.0 Off | N/A |
| N/A 37C P8 1W / N/A

But the nvidia GPU is never used used automatic : I always have only 1W consumption.

I only have nvidia GPU working (and consumption about 10W) when using the prefix : __NV_PRIME_RENDER_OFFLOAD=1 __VK_LAYER_NV_optimus=NVIDIA_only __GLX_VENDOR_LIBRARY_NAME=nvidia

So nothing "on demand" but only manual switching.
It seems that eamless/automatic switching was available in 435 driver.

In nvidia-settings I don't have a PRIME Profiles as you can see on this doc : https://doc.ubuntu-fr.org/_media/nvidia-prime-profiles.jpg
Here you can see another example with 435 driver and "On Demand" mode : https://www.reddit.com/r/Ubuntu/comments/deh01n/nvidia_on_demand/
You can see the three mode. For me "On Demand" should be automatic... as in windows and in 435 version.

Nothing like this in the 450 driver.