NVIDIA: Difference between revisions
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'''Mostly useful for laptops'''. There are currently two solutions available under NixOS: | '''Mostly useful for laptops'''. There are currently two solutions available under NixOS: | ||
=== Nvidia PRIME === | === Nvidia PRIME === | ||
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} | } | ||
</nowiki>}} | </nowiki>}} | ||
=== Bumblebee === | |||
Deprecated solution. | |||
Use option <syntaxHighlight lang="nix">hardware.bumblebee.enable = true;</syntaxHighlight> | |||
== non-NixOS case == | == non-NixOS case == | ||
Revision as of 00:45, 9 March 2020
Card type
- MXM / output-providing card (shows as VGA Controller in lspci), i.e. graphics card in desktop computer or in some laptops
- muxless/non-MXM Optimus cards have no display outputs and show as 3D Controller in lspci output, seen in most modern consumer laptops
Non-optimus mode
You need MXM card. Follow NVIDIA Graphics Cards section in official manual.
In case of laptop you may also need to use a BIOS option to select which card to use for the internal display.
Optimus
Mostly useful for laptops. There are currently two solutions available under NixOS:
Nvidia PRIME
Official solution by nvidia.
sync mode
Old solution by nvidia. In this mode nvidia card is turned on constantly, having impact on laptop battery and health.
Possible issues:
- Hangs of applications after resume from suspend
- Wrong DPI calculation (in this case provide dpi manually )
services.xserver.dpi = 96;
- Black screen after system upgrade
Firstly you need to enable the proprietary nvidia driver
/etc/nixos/configuration.nix
{
services.xserver.videoDrivers = [ "nvidia" ];
...
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.
/etc/nixos/configuration.nix
{
services.xserver.videoDrivers = [ "intel" "nvidia" ];
...
Then you need to setup the Bus ID's of the cards as seen below.
Note: Bus ID is important and needs to be formatted properly
The Nvidia driver expects the bus ID to be in decimal format; However, lspci shows the bus IDs in hexadecimal format.
You can convert the value by
- Stripping any leading zeros from the bus numbers or if the number is above 09, convert it to decimal and use that value.
- Replacing any full stops with colons.
- Prefix the final value with "PCI".
For example:
Output from lspci
09:1f.0 VGA compatible controller: NVIDIA Corporation Device 1f91 (rev a1)
Converted and correct format
PCI:9:31:0
An example of a final configuration is below
/etc/nixos/configuration.nix
{
services.xserver.videoDrivers = [ "intel" "nvidia" ];
hardware.nvidia.prime.sync.enable = true;
# Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
hardware.nvidia.prime.nvidiaBusId = "PCI:1:0:0";
# Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA
hardware.nvidia.prime.intelBusId = "PCI:0:2:0";
}
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
__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME="nvidia" __VK_LAYER_NV_optimus="NVIDIA_only"
An example of a final configuration is below
/etc/nixos/configuration.nix
{
services.xserver.videoDrivers = [ "intel" "nvidia" ];
hardware.nvidia.prime.offload.enable = true;
# Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
hardware.nvidia.prime.nvidiaBusId = "PCI:1:0:0";
# Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA
hardware.nvidia.prime.intelBusId = "PCI:0:2:0";
}
Bumblebee
Deprecated solution.
Use option
hardware.bumblebee.enable = true;
non-NixOS case
- The nixGL project provides wrapper to use GL drivers outside of NixOS. You need to have nvidia drivers installed on your distro (for kernel modules). Then supply nvidia driver version you use on host system to nixGL.
CUDA
There some possible ways to setup a development environment using CUDA on NixOS. This can accomplished in the following ways:
- By making a FHS user env
cuda-fsh.nix
{ pkgs ? import <nixpkgs> {} }:
let fhs = pkgs.buildFHSUserEnv {
name = "cuda-env";
targetPkgs = pkgs: with pkgs;
[ git
gitRepo
gnupg
autoconf
curl
procps
gnumake
utillinux
m4
gperf
unzip
cudatoolkit
linuxPackages.nvidia_x11
libGLU_combined
xorg.libXi xorg.libXmu freeglut
xorg.libXext xorg.libX11 xorg.libXv xorg.libXrandr zlib
ncurses5
stdenv.cc
binutils
];
multiPkgs = pkgs: with pkgs; [ zlib ];
runScript = "bash";
profile = ''
export CUDA_PATH=${pkgs.cudatoolkit}
# export LD_LIBRARY_PATH=${pkgs.linuxPackages.nvidia_x11}/lib
export EXTRA_LDFLAGS="-L/lib -L${pkgs.linuxPackages.nvidia_x11}/lib"
export EXTRA_CCFLAGS="-I/usr/include"
'';
};
in pkgs.stdenv.mkDerivation {
name = "cuda-env-shell";
nativeBuildInputs = [ fhs ];
shellHook = "exec cuda-env";
}
- By making a nix-shell
cuda-shell.nix
{ pkgs ? import <nixpkgs> {} }:
pkgs.stdenv.mkDerivation {
name = "cuda-env-shell";
buildInputs = with pkgs;
[ git gitRepo gnupg autoconf curl
procps gnumake utillinux m4 gperf unzip
cudatoolkit linuxPackages.nvidia_x11
libGLU_combined
xorg.libXi xorg.libXmu freeglut
xorg.libXext xorg.libX11 xorg.libXv xorg.libXrandr zlib
ncurses5 stdenv.cc binutils
];
shellHook = ''
export CUDA_PATH=${pkgs.cudatoolkit}
# export LD_LIBRARY_PATH=${pkgs.linuxPackages.nvidia_x11}/lib:${pkgs.ncurses5}/lib
export EXTRA_LDFLAGS="-L/lib -L${pkgs.linuxPackages.nvidia_x11}/lib"
export EXTRA_CCFLAGS="-I/usr/include"
'';
}