Help running AMD iGPU and NVIDIA dGPU on 2 monitors
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SYSTEM INFO: - endeavourOS 6.10.3-1-cachyos - Kernel parameters: - nvidia_uvm nvidia_drm.modeset=1 nvidia_drm.fbdev=1 nvidia.NVreg_PreserveVideoMemoryAllocations=1 - KDE Plasma 6.1.4 on Wayland - AMD Ryzen 7 7800X3D with iGPU enabled on BIOS - NVIDIA RTX 3080 with nvidia-beta-dkms 560.31.02-1 - Main display plugged on NVIDIA GPU (display port) - Secondary display plugged on motherboard (display port)
I want to be able to make use of my iGPU (AMD Raphael on a Ryzen 7 7800X3D) to render everything, and run my games on my NVIDIA RTX 3080. It's a desktop PC, I have 2 monitors, my main one is plugged to my 3080 and the secondary is plugged to the motherboard, and by doing so, VRR/Gsync works on my main display (the only workaround to get VRR working with a NVIDIA card and multiple monitors). The second thing I would like to do is for Firefox on my second screen to render/decode with my iGPU, so I can watch videos and streams there without sacrificing my frames on my games (losing about 20 frames playing Helldivers 2 if a video is playing on the background because it uses my dGPU to decode).
I've installed
nvidia-prime
from AUR and added the udev rules as written on arch wiki, however it seems that my iGPU isn't being used at all❯ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation GA102 [GeForce RTX 3080 Lite Hash Rate] (rev a1) 11:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raphael (rev cb)
❯ glxinfo | grep "OpenGL renderer" OpenGL renderer string: NVIDIA GeForce RTX 3080/PCIe/SSE2
I've noticed that moving my cursor and windows on my desktop is now slower/laggier (check notes below), and my turing smart monitor can't detect my NVIDIA GPU, but that's the extent of the changes. When I open Firefox directly on my second screen and play a video, with
nvtop
I can see that my NVIDIA GPU is the one doing the work with my iGPU not being utilised at all: https://i.imgur.com/CPPICUk.png (notice how there is no usage at all on my iGPU)I've got a screenshot while I was playing Helldivers 2 and playing a video at the same time, and if I paused the video I'd get my frames back. Using
prime-run
to run my games has no difference since everything is being handled by the dGPU anyways.Is there anything I'm missing here? I'm happy to provide more info but I'm a bit clueless on how to troubleshoot this more so any help is much appreciated.
NOTE: Regarding the choppy cursor, it is not because of GSP firmware. I've tested the proprietary drivers with and without GSP firmware, and the open drivers since 550 and I haven't noticed a single difference in my setup, they all perform exactly the same. Besides, I'm using the beta 560 drivers which are open modules only, which needs GSP firmware enabled.
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SYSTEM INFO: - endeavourOS 6.10.3-1-cachyos - Kernel parameters: - nvidia_uvm nvidia_drm.modeset=1 nvidia_drm.fbdev=1 nvidia.NVreg_PreserveVideoMemoryAllocations=1 - KDE Plasma 6.1.4 on Wayland - AMD Ryzen 7 7800X3D with iGPU enabled on BIOS - NVIDIA RTX 3080 with nvidia-beta-dkms 560.31.02-1 - Main display plugged on NVIDIA GPU (display port) - Secondary display plugged on motherboard (display port)
I want to be able to make use of my iGPU (AMD Raphael on a Ryzen 7 7800X3D) to render everything, and run my games on my NVIDIA RTX 3080. It's a desktop PC, I have 2 monitors, my main one is plugged to my 3080 and the secondary is plugged to the motherboard, and by doing so, VRR/Gsync works on my main display (the only workaround to get VRR working with a NVIDIA card and multiple monitors). The second thing I would like to do is for Firefox on my second screen to render/decode with my iGPU, so I can watch videos and streams there without sacrificing my frames on my games (losing about 20 frames playing Helldivers 2 if a video is playing on the background because it uses my dGPU to decode).
I've installed
nvidia-prime
from AUR and added the udev rules as written on arch wiki, however it seems that my iGPU isn't being used at all❯ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation GA102 [GeForce RTX 3080 Lite Hash Rate] (rev a1) 11:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raphael (rev cb)
❯ glxinfo | grep "OpenGL renderer" OpenGL renderer string: NVIDIA GeForce RTX 3080/PCIe/SSE2
I've noticed that moving my cursor and windows on my desktop is now slower/laggier (check notes below), and my turing smart monitor can't detect my NVIDIA GPU, but that's the extent of the changes. When I open Firefox directly on my second screen and play a video, with
nvtop
I can see that my NVIDIA GPU is the one doing the work with my iGPU not being utilised at all: https://i.imgur.com/CPPICUk.png (notice how there is no usage at all on my iGPU)I've got a screenshot while I was playing Helldivers 2 and playing a video at the same time, and if I paused the video I'd get my frames back. Using
prime-run
to run my games has no difference since everything is being handled by the dGPU anyways.Is there anything I'm missing here? I'm happy to provide more info but I'm a bit clueless on how to troubleshoot this more so any help is much appreciated.
NOTE: Regarding the choppy cursor, it is not because of GSP firmware. I've tested the proprietary drivers with and without GSP firmware, and the open drivers since 550 and I haven't noticed a single difference in my setup, they all perform exactly the same. Besides, I'm using the beta 560 drivers which are open modules only, which needs GSP firmware enabled.
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