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simplify levi video config

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Sean Buckley 2024-05-05 23:45:03 -04:00
parent 4bb0b8777d
commit 913896ec30
1 changed files with 69 additions and 85 deletions
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154
hosts/levi/optimus.nix
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@ -1,92 +1,76 @@
{ lib, pkgs, ... }:
let
current-mode = "nvidia-mux";
{
hardware.nvidia.prime.intelBusId = "PCI:0:2:0";
hardware.nvidia.prime.nvidiaBusId = "PCI:1:0:0";
constants = {
hardware.nvidia.prime.intelBusId = "PCI:0:2:0";
hardware.nvidia.prime.nvidiaBusId = "PCI:1:0:0";
};
### NVIDIA-only using MUX switch in BIOS.
#
# good:
# simple, always works.
# max performance everywhere.
#
# bad:
# requires BIOS setting changes, which is annoying.
#
boot.kernelParams = [ "module_blacklist=i915" ];
services.xserver.displayManager.gdm.wayland = false;
services.xserver.videoDrivers = [ "nvidia" ];
services.xserver.screenSection = ''
Option "metamodes" "DP-2: 2560x1440_165 +0+0 {AllowGSYNCCompatible=On}"
'';
}
available-modes = {
################################################################################
nvidia = {
### "sync mode"
#
# good:
# max performance on external displays
# no BIOS settings change needed
#
# bad:
# graphics performance overhead on internal display
# internal display capped at 60hz
#
hardware.nvidia.prime.sync.enable = true;
hardware.nvidia.modesetting.enable = true;
services.xserver.displayManager.gdm.wayland = false;
services.xserver.videoDrivers = [ "nvidia" ];
# xrandr workaround for laptop panel not showing up with GDM. Reference:
# https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/hardware/video/nvidia.nix
services.xserver.displayManager.sessionCommands = ''
${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource modesetting NVIDIA-0
'';
};
### "sync mode"
#
# good:
# max performance on external displays
# no BIOS settings change needed
#
# bad:
# graphics performance overhead on internal display
# internal display capped at 60hz
#
# hardware.nvidia.prime.sync.enable = true;
# hardware.nvidia.modesetting.enable = true;
# services.xserver.displayManager.gdm.wayland = false;
# services.xserver.videoDrivers = [ "nvidia" ];
# # xrandr workaround for laptop panel not showing up with GDM. Reference:
# # https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/hardware/video/nvidia.nix
# services.xserver.displayManager.sessionCommands = ''
# ${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource modesetting NVIDIA-0
# '';
nvidia-mux = {
### optimus disabled in BIOS with MUX switch.
#
# good:
# simple, always works.
# max performance everywhere.
#
# bad:
# requires BIOS setting changes, which is annoying.
#
boot.kernelParams = [ "module_blacklist=i915" ];
services.xserver.displayManager.gdm.wayland = false;
services.xserver.videoDrivers = [ "nvidia" ];
services.xserver.screenSection = ''
Option "metamodes" "DP-2: 2560x1440_165 +0+0 {AllowGSYNCCompatible=On}"
'';
};
################################################################################
intel = {
### nvidia drivers disabled
#
# Not well tested. Possibly Incomplete.
# Won't allow external displays connected to nvidia GPU.
#
# Shutting off Nvidia GPU would theoretically save power.
# I do not think this actually powers down the Nvidia GPU, just stops using it.
#
boot.kernelParams = [ "module_blacklist=nouveau" ];
};
### nvidia drivers disabled
#
# Not well tested. Possibly Incomplete.
# Won't allow external displays connected to nvidia GPU.
#
# Shutting off Nvidia GPU would theoretically save power.
# I do not think this actually powers down the Nvidia GPU, just stops using it.
#
# boot.kernelParams = [ "module_blacklist=nouveau" ];
hybrid = {
### hybrid graphics
#
# Not well tested. Possibly Incomplete.
# Won't allow external displays connected to nvidia GPU.
#
# Everything would use intel by default,
# but specific apps would run on the nvidia GPU under the script.
#
hardware.nvidia.prime.offload.enable = true;
services.xserver.videoDrivers = [ "nvidia" ];
environment.systemPackages = [
(pkgs.writeShellScriptBin "nv" ''
export __NV_PRIME_RENDER_OFFLOAD=1
export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
export __GLX_VENDOR_LIBRARY_NAME=nvidia
export __VK_LAYER_NV_optimus=NVIDIA_only
exec "$@"
'')
];
};
################################################################################
};
in
lib.mkMerge [
(constants)
(available-modes.${current-mode})
]
### hybrid graphics
#
# Not well tested. Possibly Incomplete.
# Won't allow external displays connected to nvidia GPU.
#
# Everything would use intel by default,
# but specific apps would run on the nvidia GPU under the script.
#
# hardware.nvidia.prime.offload.enable = true;
# services.xserver.videoDrivers = [ "nvidia" ];
# environment.systemPackages = [
# (pkgs.writeShellScriptBin "nv" ''
# export __NV_PRIME_RENDER_OFFLOAD=1
# export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
# export __GLX_VENDOR_LIBRARY_NAME=nvidia
# export __VK_LAYER_NV_optimus=NVIDIA_only
# exec "$@"
# '')
# ];