diff --git a/nixos/modules/hardware/video/nvidia.nix b/nixos/modules/hardware/video/nvidia.nix index d1cf7d05c1b..f8efced5364 100644 --- a/nixos/modules/hardware/video/nvidia.nix +++ b/nixos/modules/hardware/video/nvidia.nix @@ -96,6 +96,16 @@ in ''; }; + hardware.nvidia.prime.amdgpuBusId = mkOption { + type = types.str; + default = ""; + example = "PCI:4:0:0"; + description = '' + Bus ID of the AMD APU. You can find it using lspci; for example if lspci + shows the AMD APU at "04:00.0", set this option to "PCI:4:0:0". + ''; + }; + hardware.nvidia.prime.sync.enable = mkOption { type = types.bool; default = false; @@ -153,7 +163,10 @@ in }; }; - config = mkIf enabled { + config = let + igpuDriver = if pCfg.intelBusId != "" then "modesetting" else "amdgpu"; + igpuBusId = if pCfg.intelBusId != "" then pCfg.intelBusId else pCfg.amdgpuBusId; + in mkIf enabled { assertions = [ { assertion = with config.services.xserver.displayManager; gdm.nvidiaWayland -> cfg.modesetting.enable; @@ -161,7 +174,13 @@ in } { - assertion = primeEnabled -> pCfg.nvidiaBusId != "" && pCfg.intelBusId != ""; + assertion = primeEnabled -> pCfg.intelBusId == "" || pCfg.amdgpuBusId == ""; + message = '' + You cannot configure both an Intel iGPU and an AMD APU. Pick the one corresponding to your processor. + ''; + } + { + assertion = primeEnabled -> pCfg.nvidiaBusId != "" && (pCfg.intelBusId != "" || pCfg.amdgpuBusId != ""); message = '' When NVIDIA PRIME is enabled, the GPU bus IDs must configured. ''; @@ -183,18 +202,22 @@ in # "nvidia" driver, in order to allow the X server to start without any outputs. # - Add a separate Device section for the Intel GPU, using the "modesetting" # driver and with the configured BusID. + # - OR add a separate Device section for the AMD APU, using the "amdgpu" + # driver and with the configures BusID. # - Reference that Device section from the ServerLayout section as an inactive # device. # - Configure the display manager to run specific `xrandr` commands which will - # configure/enable displays connected to the Intel GPU. + # configure/enable displays connected to the Intel iGPU / AMD APU. services.xserver.useGlamor = mkDefault offloadCfg.enable; - services.xserver.drivers = optional primeEnabled { - name = "modesetting"; + services.xserver.drivers = let + in optional primeEnabled { + name = igpuDriver; display = offloadCfg.enable; + modules = optional (igpuDriver == "amdgpu") [ pkgs.xorg.xf86videoamdgpu ]; deviceSection = '' - BusID "${pCfg.intelBusId}" + BusID "${igpuBusId}" ${optionalString syncCfg.enable ''Option "AccelMethod" "none"''} ''; } ++ singleton { @@ -214,14 +237,14 @@ in }; services.xserver.serverLayoutSection = optionalString syncCfg.enable '' - Inactive "Device-modesetting[0]" + Inactive "Device-${igpuDriver}[0]" '' + optionalString offloadCfg.enable '' Option "AllowNVIDIAGPUScreens" ''; services.xserver.displayManager.setupCommands = optionalString syncCfg.enable '' # Added by nvidia configuration module for Optimus/PRIME. - ${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource modesetting NVIDIA-0 + ${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource ${igpuDriver} NVIDIA-0 ${pkgs.xorg.xrandr}/bin/xrandr --auto '';