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https://github.com/Nexoniarz/nexoniarz-config-nixos.git
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721f1d509c
The Radeon Vega 8 iGPU now drives the desktop; the RTX 3060 Ti is used through PRIME offload for games (everything launched by Steam) and for LLMs (CUDA). Firefox video decoding moves to the iGPU's radeonsi VA-API, so the nvidia-vaapi env vars are gone and Firefox's RDD sandbox is back on. Requires the iGPU enabled as primary display in BIOS. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
94 lines
2.9 KiB
Nix
94 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
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{
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hardware.graphics = {
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enable = true;
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enable32Bit = true;
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};
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# PRIME offload: the 5700G's Radeon Vega 8 iGPU runs the desktop (monitors
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# plugged into the motherboard), the RTX 3060 Ti only wakes up for games
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# and LLMs. Needs in the BIOS: Integrated Graphics = Forced/Enabled and
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# primary display = IGD/iGPU. KWin then picks the iGPU as the boot VGA.
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# amdgpu loads by itself; hardware.graphics provides Mesa (RADV, radeonsi).
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services.xserver.videoDrivers = [ "nvidia" ];
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hardware.nvidia = {
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modesetting.enable = true;
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open = true;
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nvidiaSettings = true;
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package = config.boot.kernelPackages.nvidiaPackages.stable;
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prime = {
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offload.enable = true;
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offload.enableOffloadCmd = true; # `nvidia-offload <app>` runs it on the RTX
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amdgpuBusId = "PCI:7:0:0";
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nvidiaBusId = "PCI:1:0:0";
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};
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};
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# Everything Steam launches (games, Proton/DXVK) renders on the RTX. Same
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# variables nvidia-offload sets; CUDA apps (LM Studio) don't need them.
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programs.steam.package = pkgs.steam.override {
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extraEnv = {
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__NV_PRIME_RENDER_OFFLOAD = "1";
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__NV_PRIME_RENDER_OFFLOAD_PROVIDER = "NVIDIA-G0";
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__GLX_VENDOR_LIBRARY_NAME = "nvidia";
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__VK_LAYER_NV_optimus = "NVIDIA_only";
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};
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};
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environment.systemPackages = with pkgs; [
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vulkan-tools # vulkaninfo --summary: check both GPUs are visible
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amdgpu_top # usage monitor for the iGPU
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];
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# Firefox video decoding runs on the iGPU through Mesa's radeonsi VA-API
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# driver, which libva finds on its own: no env vars, and Firefox's decoder
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# (RDD) sandbox stays on. Vega 8 decodes H.264, HEVC and VP9; AV1 falls
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# back to the CPU.
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hardware.opentabletdriver.enable = true;
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hardware.uinput.enable = true;
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boot.kernelModules = [ "uinput" ];
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hardware.bluetooth = {
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enable = true;
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powerOnBoot = true;
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settings = {
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General = {
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Experimental = true; # Battery level of connected devices
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FastConnectable = true; # Faster reconnects, more power draw
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};
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Policy = {
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AutoEnable = true;
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};
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};
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};
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# Plasma ships its own Bluetooth UI (Bluedevil); blueman just duplicated it.
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boot.extraModprobeConfig = ''
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# DualSense/PS4 pads pair over Bluetooth then drop instantly; broken
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# ERTM in many adapters. Disabling it is the standard fix.
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options bluetooth disable_ertm=1
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'';
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# Blog V4 needs the rtlsdrblog fork of librtlsdr, which is what
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# pkgs.rtl-sdr already is here. Also blacklists the DVB-T drivers.
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hardware.rtl-sdr.enable = true;
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# For ddcutil — no laptop backlight here, only external DisplayPort.
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hardware.i2c.enable = true;
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services.hardware.openrgb = {
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enable = true;
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motherboard = "amd";
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};
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services.udev.extraRules = ''
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# OpenRGB
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SUBSYSTEM=="i2c-dev", GROUP="i2c", MODE="0660"
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'';
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services.printing.enable = true;
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}
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