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j_ratinsky

Member

Registered: 2024-02-05

Posts: 3

PRIME with Nvidia GTX 1650 Ti and AMD Radeon RX Vega 6

Hello,

I'm having issues with configuring my dual gpu setup. I want to be able to send output from the AMD card to the GTX 1650 Ti, which has HDMI connected.

lspci -k | grep -A 2 VGA

01:00.0 VGA compatible controller: NVIDIA Corporation TU117M [GeForce GTX 1650 Mobile / Max-Q] (rev a1)
        Subsystem: Lenovo Device 3a43
        Kernel driver in use: nvidia
--
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [Radeon RX Vega 6 (Ryzen 4000/5000 Mobile Series)] (rev c6)
        Subsystem: Lenovo Device 3a3f
        Kernel driver in use: amdgpu

If I understand it correctly, I should use reverse-PRIME for that.

This is my xrog.conf: https://text.is/RMJ2

 xrandr --setprovideroutputsource 1 0 

runs without issues. The integrated gpu is being used as the primary gpu:

 glxinfo | grep Device
    Device: AMD Radeon Graphics (radeonsi, renoir, LLVM 17.0.6, DRM 3.57, 6.8.7-arch1-2) (0x1636)

Xrandr sees both gpus:

 xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x53 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 4 outputs: 1 associated providers: 1 name:AMD Radeon Graphics @ pci:0000:05:00.0
Provider 1: id: 0x1f4 cap: 0x2, Sink Output crtcs: 4 outputs: 4 associated providers: 1 name:NVIDIA-G0

Xrandr sees the HDMI output as connected: https://text.is/X2JL .
However, the external screen is still off. When I try to turn it on, I get configure crtc 4 failed error.

xrandr --output HDMI-1-0 --auto
xrandr: Configure crtc 4 failed

The funny thing is, I managed to get the HDMI output working with PRIME offloading ( xrandr --setprovideroffloadsink ) using nouveau. BUT I unfortunately need the proprietary drivers for CUDA support.

Any insight is greatly appreciated, I've been scratching my head over this for way too long.

j_ratinsky

Member

Registered: 2024-02-05

Posts: 3

Re: PRIME with Nvidia GTX 1650 Ti and AMD Radeon RX Vega 6

Finally solved with adding the correct kernel module: /etc/modprobe.d

 cat /etc/modprobe.d/nvidia-params.conf 
options nvidia_drm modeset=1 fbdev=1 

Last edited by j_ratinsky (2024-06-08 12:05:54)