KDE Plasma(wayland) not using nvidia GPU

[cedar spoke]

when using plasma wayland it doesn't seem to work with my nvidia gpu (glxinfo shows Mesa Intel), with plasma(X11) it correctly shows the nvidia gpu
tried using both nvidia and nvidia-open drivers
gpu : nvdia 1650ti mobile

[blazing gust]

Did you enable the kernel parameter?

[cedar spoke]

Yes (nvidia-drm.modeset=1)

[blazing gust]

Are you using a laptop with dual GPU

[cedar spoke]

integrated graphics(intel) + nvidia 1650ti (see-> neofetch)

[blazing gust]

Laptop, yes?

Then it's using your iGPU by default

You need to set an env var to use NVIDIA

Otherwise it runs stuff on iGPU

[cedar spoke]

Ok so it'll never use the nvidia gpu I assume even under heavy load? I' so, how do i set an env var that does that

Also : should I use the nvidia-open drivers or nvidia proprietary?

[blazing gust]

Try both

See which one is better

[blazing gust]

Uh lemme find that

@cedar spoke DRI_PRIME=pci-0000_01_00_0 __VK_LAYER_NV_optimus=NVIDIA_only __GLX_VENDOR_LIBRARY_NAME=nvidia glxinfo try this

[cedar spoke]

where do I input this?

[blazing gust]

That's a command

It has glxinfo at the end

Run it and see if it gives you Nvidia

[cedar spoke]

will do, just a sec

Yup, working. "OpenGL renderer string: NVIDIA GEFORCE GTX 1650 Ti/PCIe/SSE2"

kde systeminfo still shows Mesa Intel though

[blazing gust]

Because it's the default

I recommend only using dedicated GPU for games

You don't need it for anything else

[cedar spoke]

Ok, so now it'll use the gpu for heavy loads etc.? And is this change permanent right now or do I need to make the env var run every time I reboot?

[blazing gust]

No it won't

And no

You launched one app with the env var

And that one app used Nvidia

Anything else you run now will use Intel

[cedar spoke]

So is it possible to achieve an endstate as described in this https://community.kde.org/Plasma/Wayland/Nvidia where wayland uses nvidia gpu

[blazing gust]

Wayland doesn't use any GPU

Well, Wayland always uses the GPU the display is connected to

You can't change the GPU your display is connected to

[cedar spoke]

Ok. So my gpu was working as intended from the very beginning? I was confused because https://community.kde.org/Plasma/Wayland/Nvidia describes running wayland with proprietary nvidia drivers.

[blazing gust]

Yes

But if you wanna run apps on your discrete GPU, you have to set the env vars

[cedar spoke]

"Select "Plasma (wayland)" from your login manager
Enjoy your beautiful super-fast accelerated wayland desktop!"

[blazing gust]

Just set it for the steam process

[cedar spoke]

So I paste this into launch options? DRI_PRIME=pci-0000_01_00_0 __VK_LAYER_NV_optimus=NVIDIA_only __GLX_VENDOR_LIBRARY_NAME=nvidia

[blazing gust]

Well no because that would set them ad parameters and not as env vars

ENV=stuff %command% like this

[cedar spoke]

What about https://wiki.archlinux.org/title/NVIDIA_Optimus#Use_NVIDIA_graphics_only ? The reason I'm asking is I assume if it's possible to use the dedicated gpu wherever possible then everything would run smoother/better

[blazing gust]

You will not notice a difference running a web browser on the dedicated GPU

Only run games there

The benefit of this is 10x more battery

[cedar spoke]

I see, is there a reason why plasma(x11) didn't display mesa from the beginning with glxinfo?

[blazing gust]

Because it's Xorg