Can't load system using nvidia driver

Support Graphics & Display
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sudo dmesg

Not sure, but it looks like that it tries to load the intel gpu with the nvidia driver and failed :smile:

I assume Device0 is Intel and Device1 is Nvidia?

Check the /etc/X11/xorg.conf file. Maybe there is the wrong BusID?

EDIT: I tested it myself with:

$ inxi -Gazy
Graphics:
  Device-1: AMD Trinity [Radeon HD 7560D] vendor: ASUSTeK driver: radeon 
  v: kernel bus-ID: 00:01.0 chip-ID: 1002:9904 class-ID: 0300 
  Device-2: NVIDIA GP107 [GeForce GTX 1050 Ti] vendor: ZOTAC driver: nvidia 
  v: 470.63.01 alternate: nouveau,nvidia_drm bus-ID: 01:00.0 
  chip-ID: 10de:1c82 class-ID: 0300 
  Display: x11 server: X.Org 1.20.13 compositor: gnome-shell v: 40.4 driver: 
  loaded: modesetting,nvidia display-ID: :0 screens: 1 
  Screen-1: 0 s-res: 1920x1200 s-dpi: 96 s-size: 508x318mm (20.0x12.5") 
  s-diag: 599mm (23.6") 
  Monitor-1: VGA-1-1 res: 1920x1200 hz: 60 dpi: 94 
  size: 518x324mm (20.4x12.8") diag: 611mm (24.1") 
  OpenGL: renderer: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 
  v: 4.6.0 NVIDIA 470.63.01 direct render: Yes

Just to be sure, I set KMS:
file: /etc/modprobe.d/enable-kms.conf

options radeon modeset=1
options nvdia-drm modeset=1

and added/replaced this:
file: /etc/mkinitcpio.conf

MODULES=(radeon nvidia nvidia_modeset nvidia_uvm nvidia_drm)

I configured it like this (reverse-prime):
file: /etc/X11/xorg.conf.d/20-nvidia.conf

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "radeon"
    Inactive "nvidia"
    Option "AllowNVIDIAGPUScreens"
EndSection

Section "Device"
    Identifier "radeon"
    Driver "modesetting"
    BusID "PCI:0:1:0"
EndSection

Section "Screen"
    Identifier "radeon"
    Device "radeon"
EndSection

Section "Device"
    Identifier "nvidia"
    Driver "nvidia"
    BusID "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
EndSection

Now i have this:

$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x1b8 cap: 0x1, Source Output crtcs: 4 outputs: 4 associated providers: 1 name:NVIDIA-0
Provider 1: id: 0x1fb cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 4 outputs: 2 associated providers: 1 name:modesetting

If I use the prime-setup (radeon first), it looks like that:
file: /etc/X11/xorg.conf.d/21-radeon.conf

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "nvidia"
    Inactive "radeon"
EndSection

Section "Device"
	Identifier	"nvidia"
	driver		"nvidia"
	BusID		"PCI:1:0:0"
EndSection

Section "Screen"
    Identifier     "nvidia"
    Device         "nvidia"
    Option "AllowEmptyInitialConfiguration"
EndSection

Section "Device"
	Identifier	"radeon"
	driver		"modesetting"
	BusID		"PCI:0:1:0"
EndSection

Section "Screen"
    Identifier     "radeon"
    Device         "radeon"
EndSection

$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x45 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 4 outputs: 2 associated providers: 1 name:modesetting
Provider 1: id: 0x23e cap: 0x2, Sink Output crtcs: 4 outputs: 4 associated providers: 1 name:NVIDIA-G0

Nvidia is running as main and radeon over modesetting and can be used as Sink Output, Source Offload, which means: both GPUs can be used for screens at the same time, but I cannot switch the provider on the fly because the radeon card does not support it, but intel should.

To switch it now, I do this:

sudo mv /etc/X11/xorg.conf.d/20-radeon.conf /etc/X11/xorg.conf.d/19-radeon.conf
sudo systemctl restart display-manager

Now Radeon is active.
Switch back:

sudo mv /etc/X11/xorg.conf.d/19-radeon.conf /etc/X11/xorg.conf.d/21-radeon.conf
sudo systemctl restart display-manager

Now Nvidia is active again.

lower number ā†’ higher prioritization
higher number ā†’ lower prioritization

That is done without any tools, just to understand how it works and pretty simple.

Enjoy the simplicity :wink:

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