NVIDIA: Difference between revisions

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==== offload mode ====

~~Recent solution by nvidia~~. In this mode nvidia card is only activated on demand when you run program with ~~following~~ environment variables ~~set <syntaxHighlight lang="nix">__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME="nvidia" __VK_LAYER_NV_optimus="NVIDIA_only"</syntaxHighlight>~~

Currently only in unstable, to be included in 20.09. In this mode nvidia card is only activated on demand when you run program(s) with specific environment variables, i.e., here's a sample script

Firstly you need to enable the proprietary nvidia driver

{{file|nvidia-offload|bash|<nowiki>

export __NV_PRIME_RENDER_OFFLOAD=1

export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0

export __GLX_VENDOR_LIBRARY_NAME=nvidia

export __VK_LAYER_NV_optimus=NVIDIA_only

exec -a "$0" "$@"

</nowiki>}}

Firstly you need to enable the proprietary nvidia driver (or

{{file|/etc/nixos/configuration.nix|nix|<nowiki>

{

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</nowiki>}}

Note that on certain laptops and/or if you are using a custom kernel version, you may have issues with your NixOS system finding the primary display. In this case you should also specify ~~intel~~ in videoDrivers as well, i.e.

Note that on certain laptops and/or if you are using a custom kernel version, you may have issues with your NixOS system finding the primary display. In this case you should also specify modesetting in videoDrivers as well, i.e.

{{file|/etc/nixos/configuration.nix|nix|<nowiki>

{

services.xserver.videoDrivers = [ "~~intel~~" "nvidia" ];

services.xserver.videoDrivers = [ "modesetting" "nvidia" ];

...

</nowiki>}}

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An ~~example of a final~~ configuration is below

An possible configuration is shown below

{{file|/etc/nixos/configuration.nix|nix|<nowiki>

{ pkgs, ... }:

let

nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''

export __NV_PRIME_RENDER_OFFLOAD=1

export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0

export __GLX_VENDOR_LIBRARY_NAME=nvidia

export __VK_LAYER_NV_optimus=NVIDIA_only

exec -a "$0" "$@"

'';

in

{

~~services~~.~~xserver.videoDrivers~~ = [ ~~"intel" "~~nvidia" ];

environment.systemPackages = [ nvidia-offload ];

hardware.nvidia.~~optimus_prime~~.enable = true;

# Bus ID of the ~~NVIDIA~~ GPU. You can find it using lspci, either under 3D or VGA

hardware.nvidia.prime.offload.enable = true;

~~hardware.nvidia.optimus_prime.nvidiaBusId~~ = "PCI:1:0:0";

hardware.nvidia.prime = {

# Bus ID of the ~~Intel~~ GPU. You can find it using lspci, either under 3D or VGA

# Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA

~~hardware.nvidia.optimus_prime.intelBusId~~ = "PCI:0:2:0";

intelBusId = "PCI:0:2:0";

# Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA

nvidiaBusId = "PCI:1:0:0";

};

}

</nowiki>}}

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==== sync mode ====

~~Old solution by nvidia.~~ In this mode nvidia card is turned on constantly, having impact on laptop battery and health.

In this mode nvidia card is turned on constantly, having impact on laptop battery and health.

Possible issues:

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{{file|/etc/nixos/configuration.nix|nix|<nowiki>

{

services.xserver.videoDrivers = [ "~~intel~~" "nvidia" ];

services.xserver.videoDrivers = [ "modesetting" "nvidia" ];

hardware.nvidia.prime.sync.enable = true;

# Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA

@@ Line 19: / Line 19: @@
 ==== offload mode ====
-Recent solution by nvidia. In this mode nvidia card is only activated on demand when you run program with following environment variables set <syntaxHighlight lang="nix">__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME="nvidia" __VK_LAYER_NV_optimus="NVIDIA_only"</syntaxHighlight>
+Currently only in unstable, to be included in 20.09. In this mode nvidia card is only activated on demand when you run program(s) with specific environment variables, i.e., here's a sample script
-Firstly you need to enable the proprietary nvidia driver
+{{file|nvidia-offload|bash|<nowiki>
+export __NV_PRIME_RENDER_OFFLOAD=1
+export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+export __GLX_VENDOR_LIBRARY_NAME=nvidia
+export __VK_LAYER_NV_optimus=NVIDIA_only
+exec -a "$0" "$@"
+</nowiki>}}
+Firstly you need to enable the proprietary nvidia driver (or
 {{file|/etc/nixos/configuration.nix|nix|<nowiki>
 {
@@ Line 28: / Line 36: @@
 </nowiki>}}
-Note that on certain laptops and/or if you are using a custom kernel version, you may have issues with your NixOS system finding the primary display. In this case you should also specify intel in videoDrivers as well, i.e.
+Note that on certain laptops and/or if you are using a custom kernel version, you may have issues with your NixOS system finding the primary display. In this case you should also specify modesetting in videoDrivers as well, i.e.
 {{file|/etc/nixos/configuration.nix|nix|<nowiki>
 {
-   services.xserver.videoDrivers = [ "intel" "nvidia" ];
+   services.xserver.videoDrivers = [ "modesetting" "nvidia" ];
    ...
 </nowiki>}}
@@ Line 58: / Line 66: @@
 <nowiki>PCI:9:31:0</nowiki>
-An example of a final configuration is below
+An possible configuration is shown below
 {{file|/etc/nixos/configuration.nix|nix|<nowiki>
+{ pkgs, ... }:
+let
+  nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''
+    export __NV_PRIME_RENDER_OFFLOAD=1
+    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    export __VK_LAYER_NV_optimus=NVIDIA_only
+    exec -a "$0" "$@"
+  '';
+in
 {
-   services.xserver.videoDrivers = [ "intel" "nvidia" ];
+   environment.systemPackages = [ nvidia-offload ];
-   hardware.nvidia.optimus_prime.enable = true;
-   # Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
+   hardware.nvidia.prime.offload.enable = true;
-  hardware.nvidia.optimus_prime.nvidiaBusId = "PCI:1:0:0";
+   hardware.nvidia.prime = {
-  # Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA
+    # Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA
-  hardware.nvidia.optimus_prime.intelBusId = "PCI:0:2:0";
+    intelBusId = "PCI:0:2:0";
+    # Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
+    nvidiaBusId = "PCI:1:0:0";
+  };
 }
 </nowiki>}}
@@ Line 73: / Line 95: @@
 ==== sync mode ====
-Old solution by nvidia. In this mode nvidia card is turned on constantly, having impact on laptop battery and health.
+In this mode nvidia card is turned on constantly, having impact on laptop battery and health.
 Possible issues:
@@ Line 85: / Line 107: @@
 {{file|/etc/nixos/configuration.nix|nix|<nowiki>
 {
-   services.xserver.videoDrivers = [ "intel" "nvidia" ];
+   services.xserver.videoDrivers = [ "modesetting" "nvidia" ];
    hardware.nvidia.prime.sync.enable = true;
    # Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA